Merge pull request #1068 from fatedier/dev

bump version to v0.23.3

.github/ISSUE_TEMPLATE

@@ -0,0 +1,30 @@
+Issue is only used for submiting bug report and documents typo. If there are same issues or answers can be found in documents, we will close it directly.
+(为了节约时间，提高处理问题的效率，不按照格式填写的 issue 将会直接关闭。)
+
+Use the commands below to provide key information from your environment:
+You do NOT have to include this information if this is a FEATURE REQUEST
+
+**What version of frp are you using (./frpc -v or ./frps -v)?**
+
+
+**What operating system and processor architecture are you using (`go env`)?**
+
+
+**Configures you used:**
+
+
+**Steps to reproduce the issue:**
+1.
+2.
+3.
+
+**Describe the results you received:**
+
+
+**Describe the results you expected:**
+
+
+**Additional information you deem important (e.g. issue happens only occasionally):**
+
+
+**Can you point out what caused this issue (optional)**

.travis.yml

@@ -2,9 +2,8 @@ sudo: false
 language: go
 
 go:
-    - 1.5.4
-    - 1.6.3
-    - 1.7rc6
+    - 1.10.x
+    - 1.11.x
 
 install:
     - make

Godeps/Godeps.json

@@ -1,29 +0,0 @@
-{
-	"ImportPath": "github.com/fatedier/frp",
-	"GoVersion": "go1.6",
-	"GodepVersion": "v74",
-	"Packages": [
-		"./src/..."
-	],
-	"Deps": [
-		{
-			"ImportPath": "github.com/astaxie/beego/logs",
-			"Comment": "v1.6.1-5-g88c5dfa",
-			"Rev": "88c5dfa6ead42e624c2e7d9e04eab6cb2d07412a"
-		},
-		{
-			"ImportPath": "github.com/docopt/docopt-go",
-			"Comment": "0.6.2",
-			"Rev": "784ddc588536785e7299f7272f39101f7faccc3f"
-		},
-		{
-			"ImportPath": "github.com/rakyll/statik/fs",
-			"Comment": "v0.1.0",
-			"Rev": "274df120e9065bdd08eb1120e0375e3dc1ae8465"
-		},
-		{
-			"ImportPath": "github.com/vaughan0/go-ini",
-			"Rev": "a98ad7ee00ec53921f08832bc06ecf7fd600e6a1"
-		}
-	]
-}

Godeps/Readme

@@ -1,5 +0,0 @@
-This directory tree is generated automatically by godep.
-
-Please do not edit.
-
-See https://github.com/tools/godep for more information.

Makefile

@@ -1,55 +1,43 @@
 export PATH := $(GOPATH)/bin:$(PATH)
-export GO15VENDOREXPERIMENT := 1
 
 all: fmt build
 
-build: frps frpc build_test
-
-build_test: echo_server http_server
+build: frps frpc
 
 # compile assets into binary file
-assets:
+file:
+	rm -rf ./assets/static/*
+	cp -rf ./web/frps/dist/* ./assets/static
 	go get -d github.com/rakyll/statik
-	@go install github.com/rakyll/statik
-	@rm -rf ./src/assets/statik
-	go generate ./src/...
+	go install github.com/rakyll/statik
+	rm -rf ./assets/statik
+	go generate ./assets/...
 
 fmt:
-	go fmt ./src/...
-	@go fmt ./test/echo_server.go
-	@go fmt ./test/http_server.go
-	@go fmt ./test/func_test.go
-
+	go fmt ./...
+	
 frps:
-	go build -o bin/frps ./src/cmd/frps
-	@cp -rf ./src/assets/static ./bin
+	go build -o bin/frps ./cmd/frps
+	@cp -rf ./assets/static ./bin
 
 frpc:
-	go build -o bin/frpc ./src/cmd/frpc
-
-echo_server:
-	go build -o test/bin/echo_server ./test/echo_server.go
-
-http_server:
-	go build -o test/bin/http_server ./test/http_server.go
+	go build -o bin/frpc ./cmd/frpc
 
 test: gotest
 
 gotest:
-	go test -v ./src/...
+	go test -v --cover ./assets/...
+	go test -v --cover ./client/...
+	go test -v --cover ./cmd/...
+	go test -v --cover ./models/...
+	go test -v --cover ./server/...
+	go test -v --cover ./utils/...
 
-alltest:
-	cd ./test && ./run_test.sh && cd -
-	go test -v ./src/...
-	go test -v ./test/func_test.go
-	cd ./test && ./clean_test.sh && cd -
+ci:
+	go test -count=1 -p=1 -v ./tests/...
 
+alltest: gotest ci
+	
 clean:
 	rm -f ./bin/frpc
 	rm -f ./bin/frps
-	rm -f ./test/bin/echo_server
-	rm -f ./test/bin/http_server
-	cd ./test && ./clean_test.sh && cd -
-
-save:
-	godep save ./src/...

Makefile.cross-compiles

@@ -1,12 +1,37 @@
 export PATH := $(GOPATH)/bin:$(PATH)
-export GO15VENDOREXPERIMENT := 1
+LDFLAGS := -s -w
 
 all: build
 
-build: gox app 
-
-gox:
-	go get github.com/mitchellh/gox
+build: app
 
 app:
-	gox -osarch "darwin/386 darwin/amd64 linux/386 linux/amd64 linux/arm windows/386 windows/amd64" ./src/...
+	env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frpc_darwin_amd64 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frps_darwin_amd64 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=freebsd GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frpc_freebsd_386 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=freebsd GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frps_freebsd_386 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frpc_freebsd_amd64 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frps_freebsd_amd64 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_386 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frps_linux_386 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_amd64 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frps_linux_amd64 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_arm ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -ldflags "$(LDFLAGS)" -o ./frps_linux_arm ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_arm64 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags "$(LDFLAGS)" -o ./frps_linux_arm64 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=windows GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frpc_windows_386.exe ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=windows GOARCH=386 go build -ldflags "$(LDFLAGS)" -o ./frps_windows_386.exe ./cmd/frps
+	env CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frpc_windows_amd64.exe ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frps_windows_amd64.exe ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips64 go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_mips64 ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips64 go build -ldflags "$(LDFLAGS)" -o ./frps_linux_mips64 ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips64le go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_mips64le ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips64le go build -ldflags "$(LDFLAGS)" -o ./frps_linux_mips64le ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips GOMIPS=softfloat go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_mips ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mips GOMIPS=softfloat go build -ldflags "$(LDFLAGS)" -o ./frps_linux_mips ./cmd/frps
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -ldflags "$(LDFLAGS)" -o ./frpc_linux_mipsle ./cmd/frpc
+	env CGO_ENABLED=0 GOOS=linux GOARCH=mipsle GOMIPS=softfloat go build -ldflags "$(LDFLAGS)" -o ./frps_linux_mipsle ./cmd/frps
+
+temp:
+	env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o ./frps_linux_amd64 ./cmd/frps

README.md

@@ -1,45 +1,67 @@
 # frp
 
-[![Build Status](https://travis-ci.org/fatedier/frp.svg)](https://travis-ci.org/fatedier/frp)
+[![Build Status](https://travis-ci.org/fatedier/frp.svg?branch=master)](https://travis-ci.org/fatedier/frp)
 
 [README](README.md) | [中文文档](README_zh.md)
 
 ## What is frp?
 
-frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.Now, it supports tcp, http and https protocol when requests can be forwarded by domains to backward web services.
+frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet. As of now, it supports tcp & udp, as well as http and https protocols, where requests can be forwarded to internal services by domain name.
 
-## Catalog
+Now it also try to support p2p connect.
+
+## Table of Contents
+
+<!-- vim-markdown-toc GFM -->
 
-* [What can I do with frp?](#what-can-i-do-with-frp)
 * [Status](#status)
 * [Architecture](#architecture)
-* [Example Usage](#example-usage) 
-  * [Communicate with your computer in LAN by SSH](#communicate-with-your-computer-in-lan-by-ssh)
-  * [Visit your web service in LAN by custom domains](#visit-your-web-service-in-lan-by-custom-domains)
+* [Example Usage](#example-usage)
+    * [Access your computer in LAN by SSH](#access-your-computer-in-lan-by-ssh)
+    * [Visit your web service in LAN by custom domains](#visit-your-web-service-in-lan-by-custom-domains)
+    * [Forward DNS query request](#forward-dns-query-request)
+    * [Forward unix domain socket](#forward-unix-domain-socket)
+    * [Expose a simple http file server](#expose-a-simple-http-file-server)
+    * [Expose your service in security](#expose-your-service-in-security)
+    * [P2P Mode](#p2p-mode)
 * [Features](#features)
-  * [Dashboard](#dashboard)
-  * [Authentication](#authentication)
-  * [Encryption and Compression](#encryption-and-compression)
-  * [Reload configures without frps stopped](#reload-configures-without-frps-stopped)
-  * [Privilege Mode](#privilege-mode)
+    * [Configuration File](#configuration-file)
+    * [Configuration file template](#configuration-file-template)
+    * [Dashboard](#dashboard)
+    * [Authentication](#authentication)
+    * [Encryption and Compression](#encryption-and-compression)
+    * [Hot-Reload frpc configuration](#hot-reload-frpc-configuration)
+    * [Get proxy status from client](#get-proxy-status-from-client)
     * [Port White List](#port-white-list)
-  * [Connection Pool](#connection-pool)
-  * [Rewriting the Host Header](#rewriting-the-host-header)
+    * [Port Reuse](#port-reuse)
+    * [TCP Stream Multiplexing](#tcp-stream-multiplexing)
+    * [Support KCP Protocol](#support-kcp-protocol)
+    * [Connection Pool](#connection-pool)
+    * [Load balancing](#load-balancing)
+    * [Health Check](#health-check)
+    * [Rewriting the Host Header](#rewriting-the-host-header)
+    * [Set Headers In HTTP Request](#set-headers-in-http-request)
+    * [Get Real IP](#get-real-ip)
+    * [Password protecting your web service](#password-protecting-your-web-service)
+    * [Custom subdomain names](#custom-subdomain-names)
+    * [URL routing](#url-routing)
+    * [Connect frps by HTTP PROXY](#connect-frps-by-http-proxy)
+    * [Range ports mapping](#range-ports-mapping)
+    * [Plugin](#plugin)
 * [Development Plan](#development-plan)
 * [Contributing](#contributing)
-* [Contributors](#contributors)
+* [Donation](#donation)
+    * [AliPay](#alipay)
+    * [Wechat Pay](#wechat-pay)
+    * [Paypal](#paypal)
 
-## What can I do with frp?
-
-* Expose any http and https service behind a NAT or firewall to the internet by a server with public IP address(Name-based Virtual Host Support).
-* Expose any tcp service behind a NAT or firewall to the internet by a server with public IP address.
-* Inspect all http requests/responses that are transmitted over the tunnel(future).
+<!-- vim-markdown-toc -->
 
 ## Status
 
-frp is under development and you can try it with latest release version.Master branch for releasing stable version when dev branch for developing.
+frp is under development and you can try it with latest release version. Master branch for releasing stable version when dev branch for developing.
 
-**We may change any protocol and can't promise backward compatible.Please check the release log when upgrading.**
+**We may change any protocol and can't promise backward compatible. Please check the release log when upgrading.**
 
 ## Architecture
 
@@ -53,35 +75,33 @@ Put **frps** and **frps.ini** to your server with public IP.
 
 Put **frpc** and **frpc.ini** to your server in LAN.
 
-### Communicate with your computer in LAN by SSH
+### Access your computer in LAN by SSH
 
-1. Modify frps.ini, configure a reverse proxy named [ssh]:
+1. Modify frps.ini:
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
-
-  [ssh]
-  listen_port = 6000
-  auth_token = 123
   ```
 
 2. Start frps:
 
   `./frps -c ./frps.ini`
 
-3. Modify frpc.ini, set remote frps's server IP as x.x.x.x:
+3. Modify frpc.ini, `server_addr` is your frps's server IP:
 
   ```ini
   # frpc.ini
   [common]
   server_addr = x.x.x.x
   server_port = 7000
-  auth_token = 123
 
   [ssh]
+  type = tcp
+  local_ip = 127.0.0.1
   local_port = 22
+  remote_port = 6000
   ```
 
 4. Start frpc:
@@ -96,20 +116,15 @@ Put **frpc** and **frpc.ini** to your server in LAN.
 
 Sometimes we want to expose a local web service behind a NAT network to others for testing with your own domain name and unfortunately we can't resolve a domain name to a local ip.
 
-Howerver, we can expose a http or https service using frp.
+However, we can expose a http or https service using frp.
 
-1. Modify frps.ini, configure a http reverse proxy named [web] and set http port as 8080, custom domain as `www.yourdomain.com`:
+1. Modify frps.ini, configure http port 8080:
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
   vhost_http_port = 8080
-
-  [web]
-  type = http
-  custom_domains = www.yourdomain.com
-  auth_token = 123
   ```
 
 2. Start frps:
@@ -123,11 +138,11 @@ Howerver, we can expose a http or https service using frp.
   [common]
   server_addr = x.x.x.x
   server_port = 7000
-  auth_token = 123
 
   [web]
   type = http
   local_port = 80
+  custom_domains = www.yourdomain.com
   ```
 
 4. Start frpc:
@@ -138,8 +153,224 @@ Howerver, we can expose a http or https service using frp.
 
 6. Now visit your local web service using url `http://www.yourdomain.com:8080`.
 
+### Forward DNS query request
+
+1. Modify frps.ini:
+
+  ```ini
+  # frps.ini
+  [common]
+  bind_port = 7000
+  ```
+
+2. Start frps:
+
+  `./frps -c ./frps.ini`
+
+3. Modify frpc.ini, set remote frps's server IP as x.x.x.x, forward dns query request to google dns server `8.8.8.8:53`:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [dns]
+  type = udp
+  local_ip = 8.8.8.8
+  local_port = 53
+  remote_port = 6000
+  ```
+
+4. Start frpc:
+
+  `./frpc -c ./frpc.ini`
+
+5. Send dns query request by dig:
+
+  `dig @x.x.x.x -p 6000 www.google.com`
+
+### Forward unix domain socket
+
+Using tcp port to connect unix domain socket like docker daemon.
+
+Configure frps same as above.
+
+1. Start frpc with configurations:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [unix_domain_socket]
+  type = tcp
+  remote_port = 6000
+  plugin = unix_domain_socket
+  plugin_unix_path = /var/run/docker.sock
+  ```
+
+2. Get docker version by curl command:
+
+  `curl http://x.x.x.x:6000/version`
+
+### Expose a simple http file server
+
+A simple way to visit files in the LAN.
+
+Configure frps same as above.
+
+1. Start frpc with configurations:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [test_static_file]
+  type = tcp
+  remote_port = 6000
+  plugin = static_file
+  plugin_local_path = /tmp/file
+  plugin_strip_prefix = static
+  plugin_http_user = abc
+  plugin_http_passwd = abc
+  ```
+
+2. Visit `http://x.x.x.x:6000/static/` by your browser, set correct user and password, so you can see files in `/tmp/file`.
+
+### Expose your service in security
+
+For some services, if expose them to the public network directly will be a security risk.
+
+**stcp(secret tcp)** help you create a proxy avoiding any one can access it.
+
+Configure frps same as above.
+
+1. Start frpc, forward ssh port and `remote_port` is useless:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [secret_ssh]
+  type = stcp
+  sk = abcdefg
+  local_ip = 127.0.0.1
+  local_port = 22
+  ```
+
+2. Start another frpc in which you want to connect this ssh server:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [secret_ssh_visitor]
+  type = stcp
+  role = visitor
+  server_name = secret_ssh
+  sk = abcdefg
+  bind_addr = 127.0.0.1
+  bind_port = 6000
+  ```
+
+3. Connect to server in LAN by ssh assuming that username is test:
+
+  `ssh -oPort=6000 test@127.0.0.1`
+
+### P2P Mode
+
+**xtcp** is designed for transmitting a large amount of data directly between two client.
+
+Now it can't penetrate all types of NAT devices. You can try **stcp** if **xtcp** doesn't work.
+
+1. Configure a udp port for xtcp:
+
+  ```ini
+  bind_udp_port = 7001
+  ```
+
+2. Start frpc, forward ssh port and `remote_port` is useless:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [p2p_ssh]
+  type = xtcp
+  sk = abcdefg
+  local_ip = 127.0.0.1
+  local_port = 22
+  ```
+
+3. Start another frpc in which you want to connect this ssh server:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [p2p_ssh_visitor]
+  type = xtcp
+  role = visitor
+  server_name = p2p_ssh
+  sk = abcdefg
+  bind_addr = 127.0.0.1
+  bind_port = 6000
+  ```
+
+4. Connect to server in LAN by ssh assuming that username is test:
+
+  `ssh -oPort=6000 test@127.0.0.1`
+
 ## Features
 
+### Configuration File
+
+You can find features which this document not metioned from full example configuration files.
+
+[frps full configuration file](./conf/frps_full.ini)
+
+[frpc full configuration file](./conf/frpc_full.ini)
+
+### Configuration file template
+
+Configuration file tempalte can be rendered using os environments. Template uses Go's standard format.
+
+```ini
+# frpc.ini
+[common]
+server_addr = {{ .Envs.FRP_SERVER_ADDR }}
+server_port = 7000
+
+[ssh]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+remote_port = {{ .Envs.FRP_SSH_REMOTE_PORT }}
+```
+
+Start frpc program:
+
+```
+export FRP_SERVER_ADDR="x.x.x.x"
+export FRP_SSH_REMOTE_PORT="6000"
+./frpc -c ./frpc.ini
+```
+
+frpc will auto render configuration file template using os environments.
+All environments has prefix `.Envs`.
+
 ### Dashboard
 
 Check frp's status and proxies's statistics information by Dashboard.
@@ -149,127 +380,111 @@ Configure a port for dashboard to enable this feature:
 ```ini
 [common]
 dashboard_port = 7500
+# dashboard's username and password are both optional，if not set, default is admin.
+dashboard_user = admin
+dashboard_pwd = admin
 ```
 
-Then visit `http://[server_addr]:7500` to see dashboard.
+Then visit `http://[server_addr]:7500` to see dashboard, default username and password are both `admin`.
 
 ![dashboard](/doc/pic/dashboard.png)
 
 ### Authentication
 
-`auth_token` in frps.ini is configured for each proxy and check for authentication when frpc login in.
-
-Client that want's to register must set a global `auth_token` equals to frps.ini.
-
-Note that time duration bewtween frpc and frps mustn't exceed 15 minutes because timestamp is used for authentication.
+`token` in frps.ini and frpc.ini should be same.
 
 ### Encryption and Compression
 
-Defalut value is false, you could decide if the proxy will use encryption or compression whether the type is:
+Defalut value is false, you could decide if the proxy will use encryption or compression:
 
 ```ini
 # frpc.ini
 [ssh]
 type = tcp
-listen_port = 6000
-auth_token = 123
+local_port = 22
+remote_port = 6000
 use_encryption = true
-use_gzip = true
+use_compression = true
 ```
 
-### Reload configures without frps stopped
+### Hot-Reload frpc configuration
 
-If your want to add a new reverse proxy and avoid restarting frps, you can use this function:
+First you need to set admin port in frpc's configure file to let it provide HTTP API for more features.
 
-1. `dashboard_port` should be set in frps.ini:
+```ini
+# frpc.ini
+[common]
+admin_addr = 127.0.0.1
+admin_port = 7400
+```
+
+Then run command `frpc reload -c ./frpc.ini` and wait for about 10 seconds to let frpc create or update or delete proxies.
+
+**Note that parameters in [common] section won't be modified except 'start' now.**
+
+### Get proxy status from client
+
+Use `frpc status -c ./frpc.ini` to get status of all proxies. You need to set admin port in frpc's configure file.
+
+### Port White List
+
+`allow_ports` in frps.ini is used for preventing abuse of ports:
+
+```ini
+# frps.ini
+[common]
+allow_ports = 2000-3000,3001,3003,4000-50000
+```
+
+`allow_ports` consists of a specific port or a range of ports divided by `,`.
+
+### Port Reuse
+
+Now `vhost_http_port` and `vhost_https_port` in frps can use same port with `bind_port`. frps will detect connection's protocol and handle it correspondingly.
+
+We would like to try to allow multiple proxies bind a same remote port with different protocols in the future.
+
+### TCP Stream Multiplexing
+
+frp support tcp stream multiplexing since v0.10.0 like HTTP2 Multiplexing. All user requests to same frpc can use only one tcp connection.
+
+You can disable this feature by modify frps.ini and frpc.ini:
+
+```ini
+# frps.ini and frpc.ini, must be same
+[common]
+tcp_mux = false
+```
+
+### Support KCP Protocol
+
+frp support kcp protocol since v0.12.0.
+
+KCP is a fast and reliable protocol that can achieve the transmission effect of a reduction of the average latency by 30% to 40% and reduction of the maximum delay by a factor of three, at the cost of 10% to 20% more bandwidth wasted than TCP.
+
+Using kcp in frp:
+
+1. Enable kcp protocol in frps:
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
-  dashboard_port = 7500
+  # kcp needs to bind a udp port, it can be same with 'bind_port'
+  kcp_bind_port = 7000
   ```
 
-2. Start frps:
-
-  `./frps -c ./frps.ini`
-
-3. Modify frps.ini to add a new proxy [new_ssh]:
-
-  ```ini
-  # frps.ini
-  [common]
-  bind_port = 7000
-  dashboard_port = 7500
-
-  [new_ssh]
-  listen_port = 6001
-  auth_token = 123
-  ```
-
-4. Execute `reload` command:
-
-  `./frps -c ./frps.ini --reload`
-
-5. Start frpc and [new_ssh] is available now.
-
-### Privilege Mode
-
-Privilege mode is used for who don't want to do operations in frps everytime adding a new proxy.
-
-All proxies's configurations are set in frpc.ini when privilege mode is enabled.
-
-1. Enable privilege mode and set `privilege_token`.Client with the same `privilege_token` can create proxy automaticly:
-
-  ```ini
-  # frps.ini
-  [common]
-  bind_port = 7000
-  privilege_mode = true
-  privilege_token = 1234
-  ```
-
-2. Start frps:
-
-  `./frps -c ./frps.ini`
-
-3. Enable privilege mode for proxy [ssh]:
+2. Configure the protocol used in frpc to connect frps:
 
   ```ini
   # frpc.ini
   [common]
   server_addr = x.x.x.x
+  # specify the 'kcp_bind_port' in frps
   server_port = 7000
-  privilege_token = 1234
-
-  [ssh]
-  privilege_mode = true
-  local_port = 22
-  remote_port = 6000
+  protocol = kcp
   ```
 
-4. Start frpc:
-
-  `./frpc -c ./frpc.ini`
-
-5. Connect to server in LAN by ssh assuming username is test:
-
-  `ssh -oPort=6000 test@x.x.x.x`
-
-#### Port White List
-
-`privilege_allow_ports` in frps.ini is used for preventing abuse of ports in privilege mode:
-
-```ini
-# frps.ini
-[common]
-privilege_mode = true
-privilege_token = 1234
-privilege_allow_ports = 2000-3000,3001,3003,4000-50000
-```
-
-`privilege_allow_ports` consists of a specific port or a range of ports divided by `,`.
-
 ### Connection Pool
 
 By default, frps send message to frpc for create a new connection to backward service when getting an user request.If a proxy's connection pool is enabled, there will be a specified number of connections pre-established.
@@ -278,62 +493,277 @@ This feature is fit for a large number of short connections.
 
 1. Configure the limit of pool count each proxy can use in frps.ini:
 
-  ```ini         
+  ```ini
   # frps.ini
   [common]
-  max_pool_count = 50
+  max_pool_count = 5
   ```
 
 2. Enable and specify the number of connection pool:
 
-  ```ini 
+  ```ini
   # frpc.ini
-  [ssh] 
-  type = tcp
-  local_port = 22
-  pool_count = 10
+  [common]
+  pool_count = 1
   ```
 
+### Load balancing
+
+Load balancing is supported by `group`.
+This feature is available only for type `tcp` now.
+
+```ini
+# frpc.ini
+[test1]
+type = tcp
+local_port = 8080
+remote_port = 80
+group = web
+group_key = 123
+
+[test2]
+type = tcp
+local_port = 8081
+remote_port = 80
+group = web
+group_key = 123
+```
+
+`group_key` is used for authentication.
+
+Proxies in same group will accept connections from port 80 randomly.
+
+### Health Check
+
+Health check feature can help you achieve high availability with load balancing.
+
+Add `health_check_type = {type}` to enable health check.
+
+**type** can be tcp or http.
+
+Type tcp will dial the service port and type http will send a http rquest to service and require a 200 response.
+
+Type tcp configuration:
+
+```ini
+# frpc.ini
+[test1]
+type = tcp
+local_port = 22
+remote_port = 6000
+# enable tcp health check
+health_check_type = tcp
+# dial timeout seconds
+health_check_timeout_s = 3
+# if continuous failed in 3 times, the proxy will be removed from frps
+health_check_max_failed = 3
+# every 10 seconds will do a health check
+health_check_interval_s = 10
+```
+
+Type http configuration:
+```ini
+# frpc.ini
+[web]
+type = http
+local_ip = 127.0.0.1
+local_port = 80
+custom_domains = test.yourdomain.com
+# enable http health check
+health_check_type = http
+# frpc will send a GET http request '/status' to local http service
+# http service is alive when it return 2xx http response code
+health_check_url = /status
+health_check_interval_s = 10
+health_check_max_failed = 3
+health_check_timeout_s = 3
+```
+
 ### Rewriting the Host Header
 
-When forwarding to a local port, frp does not modify the tunneled HTTP requests at all, they are copied to your server byte-for-byte as they are received. Some application servers use the Host header for determining which development site to display. For this reason, frp can rewrite your requests with a modified Host header. Use the `host_header_rewrite` switch to rewrite incoming HTTP requests.
+When forwarding to a local port, frp does not modify the tunneled HTTP requests at all, they are copied to your server byte-for-byte as they are received. Some application servers use the Host header for determining which development site to display. For this reason, frp can rewrite your requests with a modified host header. Use the `host_header_rewrite` switch to rewrite incoming HTTP requests.
 
-```ini                                                             
-# frpc.ini                                                         
-[web] 
-privilege_mode = true
+```ini
+# frpc.ini
+[web]
 type = http
 local_port = 80
 custom_domains = test.yourdomain.com
 host_header_rewrite = dev.yourdomain.com
 ```
 
-If `host_header_rewrite` is specified, the Host header will be rewritten to match the hostname portion of the forwarding address.
+If `host_header_rewrite` is specified, the host header will be rewritten to match the hostname portion of the forwarding address.
+
+### Set Headers In HTTP Request
+
+You can set headers for proxy which type is `http`.
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+custom_domains = test.yourdomain.com
+host_header_rewrite = dev.yourdomain.com
+header_X-From-Where = frp
+```
+
+Note that params which have prefix `header_` will be added to http request headers.
+In this example, it will set header `X-From-Where: frp` to http request.
+
+### Get Real IP
+
+Features for http proxy only.
+
+You can get user's real IP from http request header `X-Forwarded-For` and `X-Real-IP`.
+
+### Password protecting your web service
+
+Anyone who can guess your tunnel URL can access your local web server unless you protect it with a password.
+
+This enforces HTTP Basic Auth on all requests with the username and password you specify in frpc's configure file.
+
+It can only be enabled when proxy type is http.
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+custom_domains = test.yourdomain.com
+http_user = abc
+http_pwd = abc
+```
+
+Visit `http://test.yourdomain.com` and now you need to input username and password.
+
+### Custom subdomain names
+
+It is convenient to use `subdomain` configure for http、https type when many people use one frps server together.
+
+```ini
+# frps.ini
+subdomain_host = frps.com
+```
+
+Resolve `*.frps.com` to the frps server's IP.
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+subdomain = test
+```
+
+Now you can visit your web service by host `test.frps.com`.
+
+Note that if `subdomain_host` is not empty, `custom_domains` should not be the subdomain of `subdomain_host`.
+
+### URL routing
+
+frp support forward http requests to different backward web services by url routing.
+
+`locations` specify the prefix of URL used for routing. frps first searches for the most specific prefix location given by literal strings regardless of the listed order.
+
+```ini
+# frpc.ini
+[web01]
+type = http
+local_port = 80
+custom_domains = web.yourdomain.com
+locations = /
+
+[web02]
+type = http
+local_port = 81
+custom_domains = web.yourdomain.com
+locations = /news,/about
+```
+Http requests with url prefix `/news` and `/about` will be forwarded to **web02** and others to **web01**.
+
+### Connect frps by HTTP PROXY
+
+frpc can connect frps using HTTP PROXY if you set os environment `HTTP_PROXY` or configure `http_proxy` param in frpc.ini file.
+
+It only works when protocol is tcp.
+
+```ini
+# frpc.ini
+[common]
+server_addr = x.x.x.x
+server_port = 7000
+http_proxy = http://user:pwd@192.168.1.128:8080
+```
+
+### Range ports mapping
+
+Proxy name has prefix `range:` will support mapping range ports.
+
+```ini
+# frpc.ini
+[range:test_tcp]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 6000-6006,6007
+remote_port = 6000-6006,6007
+```
+
+frpc will generate 8 proxies like `test_tcp_0, test_tcp_1 ... test_tcp_7`.
+
+### Plugin
+
+frpc only forward request to local tcp or udp port by default.
+
+Plugin is used for providing rich features. There are built-in plugins such as `unix_domain_socket`, `http_proxy`, `socks5`, `static_file` and you can see [example usage](#example-usage).
+
+Specify which plugin to use by `plugin` parameter. Configuration parameters of plugin should be started with `plugin_`. `local_ip` and `local_port` is useless for plugin.
+
+Using plugin **http_proxy**:
+
+```ini
+# frpc.ini
+[http_proxy]
+type = tcp
+remote_port = 6000
+plugin = http_proxy
+plugin_http_user = abc
+plugin_http_passwd = abc
+```
+
+`plugin_http_user` and `plugin_http_passwd` are configuration parameters used in `http_proxy` plugin.
 
 ## Development Plan
 
-* Support udp protocol.
-* Support wildcard domain name.
-* Url router.
-* Load balance to different service in frpc.
-* Debug mode for frpc, prestent proxy status in terminal.
-* Inspect all http requests/responses that are transmitted over the tunnel.
-* Frpc can directly be a webserver for static files.
-* Full control mode, dynamically modify frpc's configure with dashboard in frps.
-* P2p communicate by make udp hole to penetrate NAT.
+* Log http request information in frps.
+* Direct reverse proxy, like haproxy.
+* kubernetes ingress support.
 
 ## Contributing
 
 Interested in getting involved? We would like to help you!
 
-* Take a look at our [issues list](https://github.com/fatedier/frp/issues) and consider submitting a patch
-* If you have some wanderful ideas, send email to fatedier@gmail.com.
+* Take a look at our [issues list](https://github.com/fatedier/frp/issues) and consider sending a Pull Request to **dev branch**.
+* If you want to add a new feature, please create an issue first to describe the new feature, as well as the implementation approach. Once a proposal is accepted, create an implementation of the new features and submit it as a pull request.
+* Sorry for my poor english and improvement for this document is welcome even some typo fix.
+* If you have some wonderful ideas, send email to fatedier@gmail.com.
 
 **Note: We prefer you to give your advise in [issues](https://github.com/fatedier/frp/issues), so others with a same question can search it quickly and we don't need to answer them repeatly.**
 
-## Contributors
+## Donation
 
-* [fatedier](https://github.com/fatedier)
-* [Hurricanezwf](https://github.com/Hurricanezwf)
-* [vashstorm](https://github.com/vashstorm)
-* [maodanp](https://github.com/maodanp)
+If frp help you a lot, you can support us by:
+
+frp QQ group: 606194980
+
+### AliPay
+
+![donation-alipay](/doc/pic/donate-alipay.png)
+
+### Wechat Pay
+
+![donation-wechatpay](/doc/pic/donate-wechatpay.png)
+
+### Paypal
+
+Donate money by [paypal](https://www.paypal.me/fatedier) to my account **fatedier@gmail.com**.

README_zh.md

@@ -1,44 +1,65 @@
 # frp
 
-[![Build Status](https://travis-ci.org/fatedier/frp.svg)](https://travis-ci.org/fatedier/frp)
+[![Build Status](https://travis-ci.org/fatedier/frp.svg?branch=master)](https://travis-ci.org/fatedier/frp)
 
 [README](README.md) | [中文文档](README_zh.md)
 
-frp 是一个高性能的反向代理应用，可以帮助您轻松地进行内网穿透，对外网提供服务，支持 tcp, http, https 等协议类型，并且 web 服务支持根据域名进行路由转发。
+frp 是一个可用于内网穿透的高性能的反向代理应用，支持 tcp, udp 协议，为 http 和 https 应用协议提供了额外的能力，且尝试性支持了点对点穿透。
 
 ## 目录
 
-* [frp 的作用](#frp-的作用)
+<!-- vim-markdown-toc GFM -->
+
 * [开发状态](#开发状态)
 * [架构](#架构)
 * [使用示例](#使用示例)
-  * [通过 ssh 访问公司内网机器](#通过-ssh-访问公司内网机器)
-  * [通过自定义域名访问部署于内网的 web 服务](#通过自定义域名访问部署于内网的-web-服务) 
+    * [通过 ssh 访问公司内网机器](#通过-ssh-访问公司内网机器)
+    * [通过自定义域名访问部署于内网的 web 服务](#通过自定义域名访问部署于内网的-web-服务)
+    * [转发 DNS 查询请求](#转发-dns-查询请求)
+    * [转发 Unix域套接字](#转发-unix域套接字)
+    * [对外提供简单的文件访问服务](#对外提供简单的文件访问服务)
+    * [安全地暴露内网服务](#安全地暴露内网服务)
+    * [点对点内网穿透](#点对点内网穿透)
 * [功能说明](#功能说明)
-  * [Dashboard](#dashboard)
-  * [身份验证](#身份验证)
-  * [加密与压缩](#加密与压缩)
-  * [服务器端热加载配置文件](#服务器端热加载配置文件)
-  * [特权模式](#特权模式)
+    * [配置文件](#配置文件)
+    * [配置文件模版渲染](#配置文件模版渲染)
+    * [Dashboard](#dashboard)
+    * [身份验证](#身份验证)
+    * [加密与压缩](#加密与压缩)
+    * [客户端热加载配置文件](#客户端热加载配置文件)
+    * [客户端查看代理状态](#客户端查看代理状态)
     * [端口白名单](#端口白名单)
-  * [连接池](#连接池)
-  * [修改 Host Header](#修改-host-header)
+    * [端口复用](#端口复用)
+    * [TCP 多路复用](#tcp-多路复用)
+    * [底层通信可选 kcp 协议](#底层通信可选-kcp-协议)
+    * [连接池](#连接池)
+    * [负载均衡](#负载均衡)
+    * [健康检查](#健康检查)
+    * [修改 Host Header](#修改-host-header)
+    * [设置 HTTP 请求的 header](#设置-http-请求的-header)
+    * [获取用户真实 IP](#获取用户真实-ip)
+    * [通过密码保护你的 web 服务](#通过密码保护你的-web-服务)
+    * [自定义二级域名](#自定义二级域名)
+    * [URL 路由](#url-路由)
+    * [通过代理连接 frps](#通过代理连接-frps)
+    * [范围端口映射](#范围端口映射)
+    * [插件](#插件)
 * [开发计划](#开发计划)
-* [贡献代码](#贡献代码)
-* [贡献者](#贡献者)
+* [为 frp 做贡献](#为-frp-做贡献)
+* [捐助](#捐助)
+    * [支付宝扫码捐赠](#支付宝扫码捐赠)
+    * [微信支付捐赠](#微信支付捐赠)
+    * [Paypal 捐赠](#paypal-捐赠)
 
-## frp 的作用
-
-* 利用处于内网或防火墙后的机器，对外网环境提供 http 或 https 服务。
-* 对于 http 服务支持基于域名的虚拟主机，支持自定义域名绑定，使多个域名可以共用一个80端口。
-* 利用处于内网或防火墙后的机器，对外网环境提供 tcp 服务，例如在家里通过 ssh 访问处于公司内网环境内的主机。
-* 可查看通过代理的所有 http 请求和响应的详细信息。（待开发）
+<!-- vim-markdown-toc -->
 
 ## 开发状态
 
-frp 目前正在前期开发阶段，master 分支用于发布稳定版本，dev 分支用于开发，您可以尝试下载最新的 release 版本进行测试。
+frp 仍然处于开发阶段，未经充分测试与验证，不推荐用于生产环境。
 
-**目前的交互协议可能随时改变，不能保证向后兼容，升级新版本时需要注意公告说明。**
+master 分支用于发布稳定版本，dev 分支用于开发，您可以尝试下载最新的 release 版本进行测试。
+
+**目前的交互协议可能随时改变，不保证向后兼容，升级新版本时需要注意公告说明同时升级服务端和客户端。**
 
 ## 架构
 
@@ -48,39 +69,37 @@ frp 目前正在前期开发阶段，master 分支用于发布稳定版本，dev
 
 根据对应的操作系统及架构，从 [Release](https://github.com/fatedier/frp/releases) 页面下载最新版本的程序。
 
-将 **frps** 及 **frps.ini** 放到有公网 IP 的机器上。
+将 **frps** 及 **frps.ini** 放到具有公网 IP 的机器上。
 
 将 **frpc** 及 **frpc.ini** 放到处于内网环境的机器上。
 
 ### 通过 ssh 访问公司内网机器
 
-1. 修改 frps.ini 文件，配置一个名为 ssh 的反向代理：
+1. 修改 frps.ini 文件，这里使用了最简化的配置：
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
-  
-  [ssh]
-  listen_port = 6000
-  auth_token = 123
   ```
 
 2. 启动 frps：
 
   `./frps -c ./frps.ini`
 
-3. 修改 frpc.ini 文件，设置 frps 所在服务器的 IP 为 x.x.x.x；
+3. 修改 frpc.ini 文件，假设 frps 所在服务器的公网 IP 为 x.x.x.x；
 
   ```ini
   # frpc.ini
   [common]
   server_addr = x.x.x.x
   server_port = 7000
-  auth_token = 123
   
   [ssh]
+  type = tcp
+  local_ip = 127.0.0.1
   local_port = 22
+  remote_port = 6000
   ```
 
 4. 启动 frpc：
@@ -95,36 +114,31 @@ frp 目前正在前期开发阶段，master 分支用于发布稳定版本，dev
 
 有时想要让其他人通过域名访问或者测试我们在本地搭建的 web 服务，但是由于本地机器没有公网 IP，无法将域名解析到本地的机器，通过 frp 就可以实现这一功能，以下示例为 http 服务，https 服务配置方法相同， vhost_http_port 替换为 vhost_https_port， type 设置为 https 即可。
 
-1. 修改 frps.ini 文件，配置一个名为 web 的 http 反向代理，设置 http 访问端口为 8080，绑定自定义域名 `www.yourdomain.com`：
+1. 修改 frps.ini 文件，设置 http 访问端口为 8080：
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
   vhost_http_port = 8080
-
-  [web]
-  type = http
-  custom_domains = www.yourdomain.com
-  auth_token = 123
   ```
 
 2. 启动 frps；
 
   `./frps -c ./frps.ini`
 
-3. 修改 frpc.ini 文件，设置 frps 所在的服务器的 IP 为 x.x.x.x，local_port 为本地机器上 web 服务对应的端口：
+3. 修改 frpc.ini 文件，假设 frps 所在的服务器的 IP 为 x.x.x.x，local_port 为本地机器上 web 服务对应的端口, 绑定自定义域名 `www.yourdomain.com`:
 
   ```ini
   # frpc.ini
   [common]
   server_addr = x.x.x.x
   server_port = 7000
-  auth_token = 123
 
   [web]
   type = http
   local_port = 80
+  custom_domains = www.yourdomain.com
   ```
 
 4. 启动 frpc：
@@ -135,145 +149,368 @@ frp 目前正在前期开发阶段，master 分支用于发布稳定版本，dev
 
 6. 通过浏览器访问 `http://www.yourdomain.com:8080` 即可访问到处于内网机器上的 web 服务。
 
-## 功能说明
+### 转发 DNS 查询请求
 
-### Dashboard
+DNS 查询请求通常使用 UDP 协议，frp 支持对内网 UDP 服务的穿透，配置方式和 TCP 基本一致。
 
-通过浏览器查看 frp 的状态以及代理统计信息展示。
-
-需要在 frps.ini 中指定 dashboard 服务使用的端口，即可开启此功能：
-
-```ini
-[common]
-dashboard_port = 7500
-```
-
-打开浏览器通过 `http://[server_addr]:7500` 访问 dashboard 界面。
-
-![dashboard](/doc/pic/dashboard.png)
-
-### 身份验证
-
-出于安全性的考虑，服务器端可以在 frps.ini 中为每一个代理设置一个 auth_token 用于对客户端连接进行身份验证，例如上文中的 [ssh] 和 [web] 两个代理的 auth_token 都为 123。
-
-客户端需要在 frpc.ini 中配置自己的 auth_token，与服务器中的配置一致才能正常运行。
-
-需要注意的是 frpc 所在机器和 frps 所在机器的时间相差不能超过 15 分钟，因为时间戳会被用于加密验证中，防止报文被劫持后被其他人利用。
-
-### 加密与压缩
-
-这两个功能默认是不开启的，需要在 frpc.ini 中通过配置来为指定的代理启用加密与压缩的功能，无论类型是 tcp, http 还是 https：
-
-```ini
-# frpc.ini
-[ssh]
-type = tcp
-listen_port = 6000
-auth_token = 123
-use_encryption = true
-use_gzip = true
-```
-
-如果公司内网防火墙对外网访问进行了流量识别与屏蔽，例如禁止了 ssh 协议等，通过设置 `use_encryption = true`，将 frpc 与 frps 之间的通信内容加密传输，将会有效防止流量被拦截。
-
-如果传输的报文长度较长，通过设置 `use_gzip = true` 对传输内容进行压缩，可以有效减小 frpc 与 frps 之间的网络流量，加快流量转发速度，但是会额外消耗一些 cpu 资源。
-
-### 服务器端热加载配置文件
-
-当需要新增一个 frpc 客户端时，为了避免将 frps 重启，可以使用 reload 命令重新加载配置文件。
-
-reload 命令仅能用于修改代理的配置内容，[common] 内的公共配置信息无法修改。
-
-1. 首先需要在 frps.ini 中指定 dashboard_port：
+1. 修改 frps.ini 文件：
 
   ```ini
   # frps.ini
   [common]
   bind_port = 7000
-  dashboard_port = 7500
   ```
 
 2. 启动 frps：
 
   `./frps -c ./frps.ini`
 
-3. 修改 frps.ini 增加一个新的代理 [new_ssh]:
-
-  ```ini
-  # frps.ini
-  [common]
-  bind_port = 7000
-  dashboard_port = 7500
-
-  [new_ssh]
-  listen_port = 6001
-  auth_token = 123
-  ```
-
-4. 执行 reload 命令，使 frps 重新加载配置文件，实际上是通过 7500 端口发送了一个 http 请求
-
-  `./frps -c ./frps.ini --reload`
-
-5. 之后启动 frpc，[new_ssh] 代理已经可以使用。
-
-### 特权模式
-
-如果想要避免每次增加代理都需要操作服务器端，可以启用特权模式。
-
-特权模式被启用后，代理的所有配置信息都可以在 frpc.ini 中配置，无需在服务器端做任何操作。
-
-1. 在 frps.ini 中设置启用特权模式并设置 privilege_token，客户端需要配置同样的 privilege_token 才能使用特权模式创建代理：
-
-  ```ini
-  # frps.ini
-  [common]
-  bind_port = 7000
-  privilege_mode = true
-  privilege_token = 1234
-  ```
-
-2. 启动 frps：
-
-  `./frps -c ./frps.ini`
-
-3. 在 frpc.ini 配置代理 [ssh]，使用特权模式创建，无需事先在服务器端配置：
+3. 修改 frpc.ini 文件，设置 frps 所在服务器的 IP 为 x.x.x.x，转发到 Google 的 DNS 查询服务器 `8.8.8.8` 的 udp 53 端口：
 
   ```ini
   # frpc.ini
   [common]
   server_addr = x.x.x.x
   server_port = 7000
-  privilege_token = 1234
-
-  [ssh]
-  privilege_mode = true
-  local_port = 22
+  
+  [dns]
+  type = udp
+  local_ip = 8.8.8.8
+  local_port = 53
   remote_port = 6000
   ```
 
-  remote_port 即为原先在 frps.ini 的代理中配置的 listen_port 参数，使用特权模式后需要在 frpc 的配置文件中指定。
-
 4. 启动 frpc：
 
   `./frpc -c ./frpc.ini`
 
-5. 通过 ssh 访问内网机器，假设用户名为 test：
+5. 通过 dig 测试 UDP 包转发是否成功，预期会返回 `www.google.com` 域名的解析结果：
 
-  `ssh -oPort=6000 test@x.x.x.x`
+  `dig @x.x.x.x -p 6000 www.google.com`
 
-#### 端口白名单
+### 转发 Unix域套接字
 
-启用特权模式后为了防止端口被滥用，可以手动指定允许哪些端口被使用，在 frps.ini 中通过 privilege_allow_ports 来指定：
+通过 tcp 端口访问内网的 unix域套接字(例如和 docker daemon 通信)。
+
+frps 的部署步骤同上。
+
+1. 启动 frpc，启用 `unix_domain_socket` 插件，配置如下：
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+  
+  [unix_domain_socket]
+  type = tcp
+  remote_port = 6000
+  plugin = unix_domain_socket
+  plugin_unix_path = /var/run/docker.sock
+  ```
+
+2. 通过 curl 命令查看 docker 版本信息
+
+  `curl http://x.x.x.x:6000/version`
+
+### 对外提供简单的文件访问服务
+
+通过 `static_file` 插件可以对外提供一个简单的基于 HTTP 的文件访问服务。
+
+frps 的部署步骤同上。
+
+1. 启动 frpc，启用 `static_file` 插件，配置如下：
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [test_static_file]
+  type = tcp
+  remote_port = 6000
+  plugin = static_file
+  # 要对外暴露的文件目录
+  plugin_local_path = /tmp/file
+  # 访问 url 中会被去除的前缀，保留的内容即为要访问的文件路径
+  plugin_strip_prefix = static
+  plugin_http_user = abc
+  plugin_http_passwd = abc
+  ```
+
+2. 通过浏览器访问 `http://x.x.x.x:6000/static/` 来查看位于 `/tmp/file` 目录下的文件，会要求输入已设置好的用户名和密码。
+
+### 安全地暴露内网服务
+
+对于某些服务来说如果直接暴露于公网上将会存在安全隐患。
+
+使用 **stcp(secret tcp)** 类型的代理可以避免让任何人都能访问到要穿透的服务，但是访问者也需要运行另外一个 frpc。
+
+以下示例将会创建一个只有自己能访问到的 ssh 服务代理。
+
+frps 的部署步骤同上。
+
+1. 启动 frpc，转发内网的 ssh 服务，配置如下，不需要指定远程端口：
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [secret_ssh]
+  type = stcp
+  # 只有 sk 一致的用户才能访问到此服务
+  sk = abcdefg
+  local_ip = 127.0.0.1
+  local_port = 22
+  ```
+
+2. 在要访问这个服务的机器上启动另外一个 frpc，配置如下：
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [secret_ssh_visitor]
+  type = stcp
+  # stcp 的访问者
+  role = visitor
+  # 要访问的 stcp 代理的名字
+  server_name = secret_ssh
+  sk = abcdefg
+  # 绑定本地端口用于访问 ssh 服务
+  bind_addr = 127.0.0.1
+  bind_port = 6000
+  ```
+
+3. 通过 ssh 访问内网机器，假设用户名为 test：
+
+  `ssh -oPort=6000 test@127.0.0.1`
+
+### 点对点内网穿透
+
+frp 提供了一种新的代理类型 **xtcp** 用于应对在希望传输大量数据且流量不经过服务器的场景。
+
+使用方式同 **stcp** 类似，需要在两边都部署上 frpc 用于建立直接的连接。
+
+目前处于开发的初级阶段，并不能穿透所有类型的 NAT 设备，所以穿透成功率较低。穿透失败时可以尝试 **stcp** 的方式。
+
+1. frps 除正常配置外需要额外配置一个 udp 端口用于支持该类型的客户端:
+
+  ```ini
+  bind_udp_port = 7001
+  ```
+
+2. 启动 frpc，转发内网的 ssh 服务，配置如下，不需要指定远程端口:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [p2p_ssh]
+  type = xtcp
+  # 只有 sk 一致的用户才能访问到此服务
+  sk = abcdefg
+  local_ip = 127.0.0.1
+  local_port = 22
+  ```
+
+3. 在要访问这个服务的机器上启动另外一个 frpc，配置如下:
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  server_port = 7000
+
+  [p2p_ssh_visitor]
+  type = xtcp
+  # xtcp 的访问者
+  role = visitor
+  # 要访问的 xtcp 代理的名字
+  server_name = p2p_ssh
+  sk = abcdefg
+  # 绑定本地端口用于访问 ssh 服务
+  bind_addr = 127.0.0.1
+  bind_port = 6000
+  ```
+
+4. 通过 ssh 访问内网机器，假设用户名为 test:
+
+  `ssh -oPort=6000 test@127.0.0.1`
+
+## 功能说明
+
+### 配置文件
+
+由于 frp 目前支持的功能和配置项较多，未在文档中列出的功能可以从完整的示例配置文件中发现。
+
+[frps 完整配置文件](./conf/frps_full.ini)
+
+[frpc 完整配置文件](./conf/frpc_full.ini)
+
+### 配置文件模版渲染
+
+配置文件支持使用系统环境变量进行模版渲染，模版格式采用 Go 的标准格式。
+
+示例配置如下:
+
+```ini
+# frpc.ini
+[common]
+server_addr = {{ .Envs.FRP_SERVER_ADDR }}
+server_port = 7000
+
+[ssh]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+remote_port = {{ .Envs.FRP_SSH_REMOTE_PORT }}
+```
+
+启动 frpc 程序:
+
+```
+export FRP_SERVER_ADDR="x.x.x.x"
+export FRP_SSH_REMOTE_PORT="6000"
+./frpc -c ./frpc.ini
+```
+
+frpc 会自动使用环境变量渲染配置文件模版，所有环境变量需要以 `.Envs` 为前缀。
+
+### Dashboard
+
+通过浏览器查看 frp 的状态以及代理统计信息展示。
+
+**注：Dashboard 尚未针对大量的 proxy 数据展示做优化，如果出现 Dashboard 访问较慢的情况，请不要启用此功能。**
+
+需要在 frps.ini 中指定 dashboard 服务使用的端口，即可开启此功能：
+
+```ini
+[common]
+dashboard_port = 7500
+# dashboard 用户名密码，默认都为 admin
+dashboard_user = admin
+dashboard_pwd = admin
+```
+
+打开浏览器通过 `http://[server_addr]:7500` 访问 dashboard 界面，用户名密码默认为 `admin`。
+
+![dashboard](/doc/pic/dashboard.png)
+
+### 身份验证
+
+服务端和客户端的 common 配置中的 `token` 参数一致则身份验证通过。
+
+### 加密与压缩
+
+这两个功能默认是不开启的，需要在 frpc.ini 中通过配置来为指定的代理启用加密与压缩的功能，压缩算法使用 snappy：
+
+```ini
+# frpc.ini
+[ssh]
+type = tcp
+local_port = 22
+remote_port = 6000
+use_encryption = true
+use_compression = true
+```
+
+如果公司内网防火墙对外网访问进行了流量识别与屏蔽，例如禁止了 ssh 协议等，通过设置 `use_encryption = true`，将 frpc 与 frps 之间的通信内容加密传输，将会有效防止流量被拦截。
+
+如果传输的报文长度较长，通过设置 `use_compression = true` 对传输内容进行压缩，可以有效减小 frpc 与 frps 之间的网络流量，加快流量转发速度，但是会额外消耗一些 cpu 资源。
+
+### 客户端热加载配置文件
+
+当修改了 frpc 中的代理配置，可以通过 `frpc reload` 命令来动态加载配置文件，通常会在 10 秒内完成代理的更新。
+
+启用此功能需要在 frpc 中启用 admin 端口，用于提供 API 服务。配置如下：
+
+```ini
+# frpc.ini
+[common]
+admin_addr = 127.0.0.1
+admin_port = 7400
+```
+
+之后执行重启命令：
+
+`frpc reload -c ./frpc.ini`
+
+等待一段时间后客户端会根据新的配置文件创建、更新、删除代理。
+
+**需要注意的是，[common] 中的参数除了 start 外目前无法被修改。**
+
+### 客户端查看代理状态
+
+frpc 支持通过 `frpc status -c ./frpc.ini` 命令查看代理的状态信息，此功能需要在 frpc 中配置 admin 端口。
+
+### 端口白名单
+
+为了防止端口被滥用，可以手动指定允许哪些端口被使用，在 frps.ini 中通过 `allow_ports` 来指定：
 
 ```ini
 # frps.ini
 [common]
-privilege_mode = true
-privilege_token = 1234
-privilege_allow_ports = 2000-3000,3001,3003,4000-50000
+allow_ports = 2000-3000,3001,3003,4000-50000
 ```
 
-privilege_allow_ports 可以配置允许使用的某个指定端口或者是一个范围内的所有端口，以 `,` 分隔，指定的范围以 `-` 分隔。
+`allow_ports` 可以配置允许使用的某个指定端口或者是一个范围内的所有端口，以 `,` 分隔，指定的范围以 `-` 分隔。
+
+### 端口复用
+
+目前 frps 中的 `vhost_http_port` 和 `vhost_https_port` 支持配置成和 `bind_port` 为同一个端口，frps 会对连接的协议进行分析，之后进行不同的处理。
+
+例如在某些限制较严格的网络环境中，可以将 `bind_port` 和 `vhost_https_port` 都设置为 443。
+
+后续会尝试允许多个 proxy 绑定同一个远端端口的不同协议。
+
+### TCP 多路复用
+
+从 v0.10.0 版本开始，客户端和服务器端之间的连接支持多路复用，不再需要为每一个用户请求创建一个连接，使连接建立的延迟降低，并且避免了大量文件描述符的占用，使 frp 可以承载更高的并发数。
+
+该功能默认启用，如需关闭，可以在 frps.ini 和 frpc.ini 中配置，该配置项在服务端和客户端必须一致：
+
+```ini
+# frps.ini 和 frpc.ini 中
+[common]
+tcp_mux = false
+```
+
+### 底层通信可选 kcp 协议
+
+从 v0.12.0 版本开始，底层通信协议支持选择 kcp 协议，在弱网环境下传输效率提升明显，但是会有一些额外的流量消耗。
+
+开启 kcp 协议支持：
+
+1. 在 frps.ini 中启用 kcp 协议支持，指定一个 udp 端口用于接收客户端请求：
+
+  ```ini
+  # frps.ini
+  [common]
+  bind_port = 7000
+  # kcp 绑定的是 udp 端口，可以和 bind_port 一样
+  kcp_bind_port = 7000
+  ```
+
+2. 在 frpc.ini 指定需要使用的协议类型，目前只支持 tcp 和 kcp。其他代理配置不需要变更：
+
+  ```ini
+  # frpc.ini
+  [common]
+  server_addr = x.x.x.x
+  # server_port 指定为 frps 的 kcp_bind_port
+  server_port = 7000
+  protocol = kcp
+  ```
+
+3. 像之前一样使用 frp，需要注意开放相关机器上的 udp 的端口的访问权限。
 
 ### 连接池
 
@@ -281,24 +518,94 @@ privilege_allow_ports 可以配置允许使用的某个指定端口或者是一
 
 这一功能比较适合有大量短连接请求时开启。
 
-1. 首先可以在 frps.ini 中设置每个代理可以创建的连接池上限，避免大量资源占用，默认为 100，客户端设置超过此配置后会被调整到当前值：
+1. 首先可以在 frps.ini 中设置每个代理可以创建的连接池上限，避免大量资源占用，客户端设置超过此配置后会被调整到当前值：
 
   ```ini
   # frps.ini
   [common]
-  max_pool_count = 50
+  max_pool_count = 5
   ```
 
-2. 在 frpc.ini 中为指定代理启用连接池，指定预创建连接的数量：
+2. 在 frpc.ini 中为客户端启用连接池，指定预创建连接的数量：
 
   ```ini
   # frpc.ini
-  [ssh]
-  type = tcp
-  local_port = 22
-  pool_count = 10
+  [common]
+  pool_count = 1
   ```
 
+### 负载均衡
+
+可以将多个相同类型的 proxy 加入到同一个 group 中，从而实现负载均衡的功能。
+目前只支持 tcp 类型的 proxy。
+
+```ini
+# frpc.ini
+[test1]
+type = tcp
+local_port = 8080
+remote_port = 80
+group = web
+group_key = 123
+
+[test2]
+type = tcp
+local_port = 8081
+remote_port = 80
+group = web
+group_key = 123
+```
+
+用户连接 frps 服务器的 80 端口，frps 会将接收到的用户连接随机分发给其中一个存活的 proxy。这样可以在一台 frpc 机器挂掉后仍然有其他节点能够提供服务。
+
+要求 `group_key` 相同，做权限验证，且 `remote_port` 相同。
+
+### 健康检查
+
+通过给 proxy 加上健康检查的功能，可以在要反向代理的服务出现故障时，将这个服务从 frps 中摘除，搭配负载均衡的功能，可以用来实现高可用的架构，避免服务单点故障。
+
+在每一个 proxy 的配置下加上 `health_check_type = {type}` 来启用健康检查功能。
+
+**type** 目前可选 tcp 和 http。
+
+tcp 只要能够建立连接则认为服务正常，http 会发送一个 http 请求，服务需要返回 2xx 的状态码才会被认为正常。
+
+tcp 示例配置如下：
+
+```ini
+# frpc.ini
+[test1]
+type = tcp
+local_port = 22
+remote_port = 6000
+# 启用健康检查，类型为 tcp
+health_check_type = tcp
+# 建立连接超时时间为 3 秒
+health_check_timeout_s = 3
+# 连续 3 次检查失败，此 proxy 会被摘除
+health_check_max_failed = 3
+# 每隔 10 秒进行一次健康检查
+health_check_interval_s = 10
+```
+
+http 示例配置如下：
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_ip = 127.0.0.1
+local_port = 80
+custom_domains = test.yourdomain.com
+# 启用健康检查，类型为 http
+health_check_type = http
+# 健康检查发送 http 请求的 url，后端服务需要返回 2xx 的 http 状态码
+health_check_url = /status
+health_check_interval_s = 10
+health_check_max_failed = 3
+health_check_timeout_s = 3
+```
+
 ### 修改 Host Header
 
 通常情况下 frp 不会修改转发的任何数据。但有一些后端服务会根据 http 请求 header 中的 host 字段来展现不同的网站，例如 nginx 的虚拟主机服务，启用 host-header 的修改功能可以动态修改 http 请求中的 host 字段。该功能仅限于 http 类型的代理。
@@ -306,7 +613,6 @@ privilege_allow_ports 可以配置允许使用的某个指定端口或者是一
 ```ini
 # frpc.ini
 [web]
-privilege_mode = true
 type = http
 local_port = 80
 custom_domains = test.yourdomain.com
@@ -315,32 +621,195 @@ host_header_rewrite = dev.yourdomain.com
 
 原来 http 请求中的 host 字段 `test.yourdomain.com` 转发到后端服务时会被替换为 `dev.yourdomain.com`。
 
+### 设置 HTTP 请求的 header
+
+对于 `type = http` 的代理，可以设置在转发中动态添加的 header 参数。
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+custom_domains = test.yourdomain.com
+host_header_rewrite = dev.yourdomain.com
+header_X-From-Where = frp
+```
+
+对于参数配置中所有以 `header_` 开头的参数(支持同时配置多个)，都会被添加到 http 请求的 header 中，根据如上的配置，会在请求的 header 中加上 `X-From-Where: frp`。
+
+### 获取用户真实 IP
+
+目前只有 **http** 类型的代理支持这一功能，可以通过用户请求的 header 中的 `X-Forwarded-For` 和 `X-Real-IP` 来获取用户真实 IP。
+
+### 通过密码保护你的 web 服务
+
+由于所有客户端共用一个 frps 的 http 服务端口，任何知道你的域名和 url 的人都能访问到你部署在内网的 web 服务，但是在某些场景下需要确保只有限定的用户才能访问。
+
+frp 支持通过 HTTP Basic Auth 来保护你的 web 服务，使用户需要通过用户名和密码才能访问到你的服务。
+
+该功能目前仅限于 http 类型的代理，需要在 frpc 的代理配置中添加用户名和密码的设置。
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+custom_domains = test.yourdomain.com
+http_user = abc
+http_pwd = abc
+```
+
+通过浏览器访问 `http://test.yourdomain.com`，需要输入配置的用户名和密码才能访问。
+
+### 自定义二级域名
+
+在多人同时使用一个 frps 时，通过自定义二级域名的方式来使用会更加方便。
+
+通过在 frps 的配置文件中配置 `subdomain_host`，就可以启用该特性。之后在 frpc 的 http、https 类型的代理中可以不配置 `custom_domains`，而是配置一个 `subdomain` 参数。
+
+只需要将 `*.{subdomain_host}` 解析到 frps 所在服务器。之后用户可以通过 `subdomain` 自行指定自己的 web 服务所需要使用的二级域名，通过 `{subdomain}.{subdomain_host}` 来访问自己的 web 服务。
+
+```ini
+# frps.ini
+[common]
+subdomain_host = frps.com
+```
+
+将泛域名 `*.frps.com` 解析到 frps 所在服务器的 IP 地址。
+
+```ini
+# frpc.ini
+[web]
+type = http
+local_port = 80
+subdomain = test
+```
+
+frps 和 frpc 都启动成功后，通过 `test.frps.com` 就可以访问到内网的 web 服务。
+
+**注：如果 frps 配置了 `subdomain_host`，则 `custom_domains` 中不能是属于 `subdomain_host` 的子域名或者泛域名。**
+
+同一个 http 或 https 类型的代理中 `custom_domains`  和 `subdomain` 可以同时配置。
+
+### URL 路由
+
+frp 支持根据请求的 URL 路径路由转发到不同的后端服务。
+
+通过配置文件中的 `locations` 字段指定一个或多个 proxy 能够匹配的 URL 前缀(目前仅支持最大前缀匹配，之后会考虑正则匹配)。例如指定 `locations = /news`，则所有 URL 以 `/news` 开头的请求都会被转发到这个服务。
+
+```ini
+# frpc.ini
+[web01]
+type = http
+local_port = 80
+custom_domains = web.yourdomain.com
+locations = /
+
+[web02]
+type = http
+local_port = 81
+custom_domains = web.yourdomain.com
+locations = /news,/about
+```
+
+按照上述的示例配置后，`web.yourdomain.com` 这个域名下所有以 `/news` 以及 `/about` 作为前缀的 URL 请求都会被转发到 web02，其余的请求会被转发到 web01。
+
+### 通过代理连接 frps
+
+在只能通过代理访问外网的环境内，frpc 支持通过 HTTP PROXY 和 frps 进行通信。
+
+可以通过设置 `HTTP_PROXY` 系统环境变量或者通过在 frpc 的配置文件中设置 `http_proxy` 参数来使用此功能。
+
+仅在 `protocol = tcp` 时生效。
+
+```ini
+# frpc.ini
+[common]
+server_addr = x.x.x.x
+server_port = 7000
+http_proxy = http://user:pwd@192.168.1.128:8080
+```
+
+### 范围端口映射
+
+在 frpc 的配置文件中可以指定映射多个端口，目前只支持 tcp 和 udp 的类型。
+
+这一功能通过 `range:` 段落标记来实现，客户端会解析这个标记中的配置，将其拆分成多个 proxy，每一个 proxy 以数字为后缀命名。
+
+例如要映射本地 6000-6005, 6007 这6个端口，主要配置如下：
+
+```ini
+# frpc.ini
+[range:test_tcp]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 6000-6006,6007
+remote_port = 6000-6006,6007
+```
+
+实际连接成功后会创建 8 个 proxy，命名为 `test_tcp_0, test_tcp_1 ... test_tcp_7`。
+
+### 插件
+
+默认情况下，frpc 只会转发请求到本地 tcp 或 udp 端口。
+
+插件模式是为了在客户端提供更加丰富的功能，目前内置的插件有 `unix_domain_socket`、`http_proxy`、`socks5`、`static_file`。具体使用方式请查看[使用示例](#使用示例)。
+
+通过 `plugin` 指定需要使用的插件，插件的配置参数都以 `plugin_` 开头。使用插件后 `local_ip` 和 `local_port` 不再需要配置。
+
+使用 **http_proxy** 插件的示例:
+
+```ini
+# frpc.ini
+[http_proxy]
+type = tcp
+remote_port = 6000
+plugin = http_proxy
+plugin_http_user = abc
+plugin_http_passwd = abc
+```
+
+`plugin_http_user` 和 `plugin_http_passwd` 即为 `http_proxy` 插件可选的配置参数。
+
 ## 开发计划
 
 计划在后续版本中加入的功能与优化，排名不分先后，如果有其他功能建议欢迎在 [issues](https://github.com/fatedier/frp/issues) 中反馈。
 
-* 支持 udp 协议。
-* 支持泛域名。
-* 支持 url 路由转发。
-* frpc 支持负载均衡到后端不同服务。
-* frpc debug 模式，控制台显示代理状态，类似 ngrok 启动后的界面。
-* frpc http 请求及响应信息展示。
-* frpc 支持直接作为 webserver 访问指定静态页面。
-* frpc 完全控制模式，通过 dashboard 对 frpc 进行在线操作。
-* 支持 udp 打洞的方式，提供两边内网机器直接通信，流量不经过服务器转发。
+* frps 记录 http 请求日志。
 
-## 贡献代码
+## 为 frp 做贡献
 
-如果您对这个项目感兴趣，我们非常欢迎您参与其中！
+frp 是一个免费且开源的项目，我们欢迎任何人为其开发和进步贡献力量。
 
-* 如果您需要提交问题，可以通过 [issues](https://github.com/fatedier/frp/issues) 来完成。
-* 如果您有新的功能需求，可以反馈至 fatedier@gmail.com 共同讨论。
+* 在使用过程中出现任何问题，可以通过 [issues](https://github.com/fatedier/frp/issues) 来反馈。
+* Bug 的修复可以直接提交 Pull Request 到 dev 分支。
+* 如果是增加新的功能特性，请先创建一个 issue 并做简单描述以及大致的实现方法，提议被采纳后，就可以创建一个实现新特性的 Pull Request。
+* 欢迎对说明文档做出改善，帮助更多的人使用 frp，特别是英文文档。
+* 贡献代码请提交 PR 至 dev 分支，master 分支仅用于发布稳定可用版本。
+* 如果你有任何其他方面的问题，欢迎反馈至 fatedier@gmail.com 共同交流。
 
 **提醒：和项目相关的问题最好在 [issues](https://github.com/fatedier/frp/issues) 中反馈，这样方便其他有类似问题的人可以快速查找解决方法，并且也避免了我们重复回答一些问题。**
 
-## 贡献者
+## 捐助
 
-* [fatedier](https://github.com/fatedier)
-* [Hurricanezwf](https://github.com/Hurricanezwf)
-* [vashstorm](https://github.com/vashstorm)
-* [maodanp](https://github.com/maodanp)
+如果您觉得 frp 对你有帮助，欢迎给予我们一定的捐助来维持项目的长期发展。
+
+frp 交流群：606194980 (QQ 群号)
+
+### 知识星球
+
+如果您想学习 frp 相关的知识和技术，或者寻求任何帮助，都可以通过微信扫描下方的二维码付费加入知识星球的官方社群：
+
+![zsxq](/doc/pic/zsxq.jpg)
+
+### 支付宝扫码捐赠
+
+![donate-alipay](/doc/pic/donate-alipay.png)
+
+### 微信支付捐赠
+
+![donate-wechatpay](/doc/pic/donate-wechatpay.png)
+
+### Paypal 捐赠
+
+海外用户推荐通过 [Paypal](https://www.paypal.me/fatedier) 向我的账户 **fatedier@gmail.com** 进行捐赠。

assets/assets.go

@@ -25,7 +25,7 @@ import (
 
 	"github.com/rakyll/statik/fs"
 
-	_ "github.com/fatedier/frp/src/assets/statik"
+	_ "github.com/fatedier/frp/assets/statik"
 )
 
 var (

assets/static/index.html

@@ -0,0 +1 @@
+<!DOCTYPE html> <html lang=en> <head> <meta charset=utf-8> <title>frps dashboard</title> <link rel="shortcut icon" href="favicon.ico"></head> <body> <div id=app></div> <script type="text/javascript" src="manifest.js?14bea8276eef86cc7c61"></script><script type="text/javascript" src="vendor.js?51925ec1a77936b64d61"></script></body> </html> 

assets/static/manifest.js

@@ -0,0 +1 @@
+!function(e){function n(r){if(t[r])return t[r].exports;var o=t[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}var r=window.webpackJsonp;window.webpackJsonp=function(t,c,u){for(var i,a,f,l=0,s=[];l<t.length;l++)a=t[l],o[a]&&s.push(o[a][0]),o[a]=0;for(i in c)Object.prototype.hasOwnProperty.call(c,i)&&(e[i]=c[i]);for(r&&r(t,c,u);s.length;)s.shift()();if(u)for(l=0;l<u.length;l++)f=n(n.s=u[l]);return f};var t={},o={1:0};n.e=function(e){function r(){i.onerror=i.onload=null,clearTimeout(a);var n=o[e];0!==n&&(n&&n[1](new Error("Loading chunk "+e+" failed.")),o[e]=void 0)}var t=o[e];if(0===t)return new Promise(function(e){e()});if(t)return t[2];var c=new Promise(function(n,r){t=o[e]=[n,r]});t[2]=c;var u=document.getElementsByTagName("head")[0],i=document.createElement("script");i.type="text/javascript",i.charset="utf-8",i.async=!0,i.timeout=12e4,n.nc&&i.setAttribute("nonce",n.nc),i.src=n.p+""+e+".js?"+{0:"51925ec1a77936b64d61"}[e];var a=setTimeout(r,12e4);return i.onerror=i.onload=r,u.appendChild(i),c},n.m=e,n.c=t,n.i=function(e){return e},n.d=function(e,r,t){n.o(e,r)||Object.defineProperty(e,r,{configurable:!1,enumerable:!0,get:t})},n.n=function(e){var r=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(r,"a",r),r},n.o=function(e,n){return Object.prototype.hasOwnProperty.call(e,n)},n.p="",n.oe=function(e){throw console.error(e),e}}([]);

client/admin.go

@@ -1,4 +1,4 @@
-// Copyright 2016 fatedier, fatedier@gmail.com
+// Copyright 2017 fatedier, fatedier@gmail.com
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package server
+package client
 
 import (
 	"fmt"
@@ -20,7 +20,10 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/fatedier/frp/src/assets"
+	"github.com/fatedier/frp/g"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/gorilla/mux"
 )
 
 var (
@@ -28,22 +31,21 @@ var (
 	httpServerWriteTimeout = 10 * time.Second
 )
 
-func RunDashboardServer(addr string, port int64) (err error) {
+func (svr *Service) RunAdminServer(addr string, port int) (err error) {
 	// url router
-	mux := http.NewServeMux()
-	// api, see dashboard_api.go
-	mux.HandleFunc("/api/reload", apiReload)
-	mux.HandleFunc("/api/proxies", apiProxies)
+	router := mux.NewRouter()
 
-	// view, see dashboard_view.go
-	mux.Handle("/favicon.ico", http.FileServer(assets.FileSystem))
-	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(assets.FileSystem)))
-	mux.HandleFunc("/", viewDashboard)
+	user, passwd := g.GlbClientCfg.AdminUser, g.GlbClientCfg.AdminPwd
+	router.Use(frpNet.NewHttpAuthMiddleware(user, passwd).Middleware)
+
+	// api, see dashboard_api.go
+	router.HandleFunc("/api/reload", svr.apiReload).Methods("GET")
+	router.HandleFunc("/api/status", svr.apiStatus).Methods("GET")
 
 	address := fmt.Sprintf("%s:%d", addr, port)
 	server := &http.Server{
 		Addr:         address,
-		Handler:      mux,
+		Handler:      router,
 		ReadTimeout:  httpServerReadTimeout,
 		WriteTimeout: httpServerWriteTimeout,
 	}

client/admin_api.go

@@ -0,0 +1,210 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sort"
+	"strings"
+
+	"github.com/fatedier/frp/client/proxy"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/utils/log"
+)
+
+type GeneralResponse struct {
+	Code int64  `json:"code"`
+	Msg  string `json:"msg"`
+}
+
+// api/reload
+type ReloadResp struct {
+	GeneralResponse
+}
+
+func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res ReloadResp
+	)
+	defer func() {
+		log.Info("Http response [/api/reload]: code [%d]", res.Code)
+		buf, _ = json.Marshal(&res)
+		w.Write(buf)
+	}()
+
+	log.Info("Http request: [/api/reload]")
+
+	content, err := config.GetRenderedConfFromFile(g.GlbClientCfg.CfgFile)
+	if err != nil {
+		res.Code = 1
+		res.Msg = err.Error()
+		log.Error("reload frpc config file error: %v", err)
+		return
+	}
+
+	newCommonCfg, err := config.UnmarshalClientConfFromIni(nil, content)
+	if err != nil {
+		res.Code = 2
+		res.Msg = err.Error()
+		log.Error("reload frpc common section error: %v", err)
+		return
+	}
+
+	pxyCfgs, visitorCfgs, err := config.LoadAllConfFromIni(g.GlbClientCfg.User, content, newCommonCfg.Start)
+	if err != nil {
+		res.Code = 3
+		res.Msg = err.Error()
+		log.Error("reload frpc proxy config error: %v", err)
+		return
+	}
+
+	err = svr.ReloadConf(pxyCfgs, visitorCfgs)
+	if err != nil {
+		res.Code = 4
+		res.Msg = err.Error()
+		log.Error("reload frpc proxy config error: %v", err)
+		return
+	}
+	log.Info("success reload conf")
+	return
+}
+
+type StatusResp struct {
+	Tcp   []ProxyStatusResp `json:"tcp"`
+	Udp   []ProxyStatusResp `json:"udp"`
+	Http  []ProxyStatusResp `json:"http"`
+	Https []ProxyStatusResp `json:"https"`
+	Stcp  []ProxyStatusResp `json:"stcp"`
+	Xtcp  []ProxyStatusResp `json:"xtcp"`
+}
+
+type ProxyStatusResp struct {
+	Name       string `json:"name"`
+	Type       string `json:"type"`
+	Status     string `json:"status"`
+	Err        string `json:"err"`
+	LocalAddr  string `json:"local_addr"`
+	Plugin     string `json:"plugin"`
+	RemoteAddr string `json:"remote_addr"`
+}
+
+type ByProxyStatusResp []ProxyStatusResp
+
+func (a ByProxyStatusResp) Len() int           { return len(a) }
+func (a ByProxyStatusResp) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ByProxyStatusResp) Less(i, j int) bool { return strings.Compare(a[i].Name, a[j].Name) < 0 }
+
+func NewProxyStatusResp(status *proxy.ProxyStatus) ProxyStatusResp {
+	psr := ProxyStatusResp{
+		Name:   status.Name,
+		Type:   status.Type,
+		Status: status.Status,
+		Err:    status.Err,
+	}
+	switch cfg := status.Cfg.(type) {
+	case *config.TcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+		if status.Err != "" {
+			psr.RemoteAddr = fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, cfg.RemotePort)
+		} else {
+			psr.RemoteAddr = g.GlbClientCfg.ServerAddr + status.RemoteAddr
+		}
+	case *config.UdpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		if status.Err != "" {
+			psr.RemoteAddr = fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, cfg.RemotePort)
+		} else {
+			psr.RemoteAddr = g.GlbClientCfg.ServerAddr + status.RemoteAddr
+		}
+	case *config.HttpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+		psr.RemoteAddr = status.RemoteAddr
+	case *config.HttpsProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+		psr.RemoteAddr = status.RemoteAddr
+	case *config.StcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	case *config.XtcpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
+	}
+	return psr
+}
+
+// api/status
+func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res StatusResp
+	)
+	res.Tcp = make([]ProxyStatusResp, 0)
+	res.Udp = make([]ProxyStatusResp, 0)
+	res.Http = make([]ProxyStatusResp, 0)
+	res.Https = make([]ProxyStatusResp, 0)
+	res.Stcp = make([]ProxyStatusResp, 0)
+	res.Xtcp = make([]ProxyStatusResp, 0)
+	defer func() {
+		log.Info("Http response [/api/status]")
+		buf, _ = json.Marshal(&res)
+		w.Write(buf)
+	}()
+
+	log.Info("Http request: [/api/status]")
+
+	ps := svr.ctl.pm.GetAllProxyStatus()
+	for _, status := range ps {
+		switch status.Type {
+		case "tcp":
+			res.Tcp = append(res.Tcp, NewProxyStatusResp(status))
+		case "udp":
+			res.Udp = append(res.Udp, NewProxyStatusResp(status))
+		case "http":
+			res.Http = append(res.Http, NewProxyStatusResp(status))
+		case "https":
+			res.Https = append(res.Https, NewProxyStatusResp(status))
+		case "stcp":
+			res.Stcp = append(res.Stcp, NewProxyStatusResp(status))
+		case "xtcp":
+			res.Xtcp = append(res.Xtcp, NewProxyStatusResp(status))
+		}
+	}
+	sort.Sort(ByProxyStatusResp(res.Tcp))
+	sort.Sort(ByProxyStatusResp(res.Udp))
+	sort.Sort(ByProxyStatusResp(res.Http))
+	sort.Sort(ByProxyStatusResp(res.Https))
+	sort.Sort(ByProxyStatusResp(res.Stcp))
+	sort.Sort(ByProxyStatusResp(res.Xtcp))
+	return
+}

client/control.go

@@ -0,0 +1,304 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"fmt"
+	"io"
+	"runtime/debug"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/client/proxy"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/fatedier/golib/control/shutdown"
+	"github.com/fatedier/golib/crypto"
+	fmux "github.com/hashicorp/yamux"
+)
+
+type Control struct {
+	// uniq id got from frps, attach it in loginMsg
+	runId string
+
+	// manage all proxies
+	pxyCfgs map[string]config.ProxyConf
+	pm      *proxy.ProxyManager
+
+	// manage all visitors
+	vm *VisitorManager
+
+	// control connection
+	conn frpNet.Conn
+
+	// tcp stream multiplexing, if enabled
+	session *fmux.Session
+
+	// put a message in this channel to send it over control connection to server
+	sendCh chan (msg.Message)
+
+	// read from this channel to get the next message sent by server
+	readCh chan (msg.Message)
+
+	// goroutines can block by reading from this channel, it will be closed only in reader() when control connection is closed
+	closedCh chan struct{}
+
+	closedDoneCh chan struct{}
+
+	// last time got the Pong message
+	lastPong time.Time
+
+	readerShutdown     *shutdown.Shutdown
+	writerShutdown     *shutdown.Shutdown
+	msgHandlerShutdown *shutdown.Shutdown
+
+	mu sync.RWMutex
+
+	log.Logger
+}
+
+func NewControl(runId string, conn frpNet.Conn, session *fmux.Session, pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) *Control {
+	ctl := &Control{
+		runId:              runId,
+		conn:               conn,
+		session:            session,
+		pxyCfgs:            pxyCfgs,
+		sendCh:             make(chan msg.Message, 100),
+		readCh:             make(chan msg.Message, 100),
+		closedCh:           make(chan struct{}),
+		closedDoneCh:       make(chan struct{}),
+		readerShutdown:     shutdown.New(),
+		writerShutdown:     shutdown.New(),
+		msgHandlerShutdown: shutdown.New(),
+		Logger:             log.NewPrefixLogger(""),
+	}
+	ctl.pm = proxy.NewProxyManager(ctl.sendCh, runId)
+
+	ctl.vm = NewVisitorManager(ctl)
+	ctl.vm.Reload(visitorCfgs)
+	return ctl
+}
+
+func (ctl *Control) Run() {
+	go ctl.worker()
+
+	// start all proxies
+	ctl.pm.Reload(ctl.pxyCfgs)
+
+	// start all visitors
+	go ctl.vm.Run()
+	return
+}
+
+func (ctl *Control) HandleReqWorkConn(inMsg *msg.ReqWorkConn) {
+	workConn, err := ctl.connectServer()
+	if err != nil {
+		return
+	}
+
+	m := &msg.NewWorkConn{
+		RunId: ctl.runId,
+	}
+	if err = msg.WriteMsg(workConn, m); err != nil {
+		ctl.Warn("work connection write to server error: %v", err)
+		workConn.Close()
+		return
+	}
+
+	var startMsg msg.StartWorkConn
+	if err = msg.ReadMsgInto(workConn, &startMsg); err != nil {
+		ctl.Error("work connection closed, %v", err)
+		workConn.Close()
+		return
+	}
+	workConn.AddLogPrefix(startMsg.ProxyName)
+
+	// dispatch this work connection to related proxy
+	ctl.pm.HandleWorkConn(startMsg.ProxyName, workConn)
+}
+
+func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
+	// Server will return NewProxyResp message to each NewProxy message.
+	// Start a new proxy handler if no error got
+	err := ctl.pm.StartProxy(inMsg.ProxyName, inMsg.RemoteAddr, inMsg.Error)
+	if err != nil {
+		ctl.Warn("[%s] start error: %v", inMsg.ProxyName, err)
+	} else {
+		ctl.Info("[%s] start proxy success", inMsg.ProxyName)
+	}
+}
+
+func (ctl *Control) Close() error {
+	ctl.pm.Close()
+	ctl.conn.Close()
+	return nil
+}
+
+// ClosedDoneCh returns a channel which will be closed after all resources are released
+func (ctl *Control) ClosedDoneCh() <-chan struct{} {
+	return ctl.closedDoneCh
+}
+
+// connectServer return a new connection to frps
+func (ctl *Control) connectServer() (conn frpNet.Conn, err error) {
+	if g.GlbClientCfg.TcpMux {
+		stream, errRet := ctl.session.OpenStream()
+		if errRet != nil {
+			err = errRet
+			ctl.Warn("start new connection to server error: %v", err)
+			return
+		}
+		conn = frpNet.WrapConn(stream)
+	} else {
+		conn, err = frpNet.ConnectServerByProxy(g.GlbClientCfg.HttpProxy, g.GlbClientCfg.Protocol,
+			fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, g.GlbClientCfg.ServerPort))
+		if err != nil {
+			ctl.Warn("start new connection to server error: %v", err)
+			return
+		}
+	}
+	return
+}
+
+// reader read all messages from frps and send to readCh
+func (ctl *Control) reader() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.Error("panic error: %v", err)
+			ctl.Error(string(debug.Stack()))
+		}
+	}()
+	defer ctl.readerShutdown.Done()
+	defer close(ctl.closedCh)
+
+	encReader := crypto.NewReader(ctl.conn, []byte(g.GlbClientCfg.Token))
+	for {
+		if m, err := msg.ReadMsg(encReader); err != nil {
+			if err == io.EOF {
+				ctl.Debug("read from control connection EOF")
+				return
+			} else {
+				ctl.Warn("read error: %v", err)
+				return
+			}
+		} else {
+			ctl.readCh <- m
+		}
+	}
+}
+
+// writer writes messages got from sendCh to frps
+func (ctl *Control) writer() {
+	defer ctl.writerShutdown.Done()
+	encWriter, err := crypto.NewWriter(ctl.conn, []byte(g.GlbClientCfg.Token))
+	if err != nil {
+		ctl.conn.Error("crypto new writer error: %v", err)
+		ctl.conn.Close()
+		return
+	}
+	for {
+		if m, ok := <-ctl.sendCh; !ok {
+			ctl.Info("control writer is closing")
+			return
+		} else {
+			if err := msg.WriteMsg(encWriter, m); err != nil {
+				ctl.Warn("write message to control connection error: %v", err)
+				return
+			}
+		}
+	}
+}
+
+// msgHandler handles all channel events and do corresponding operations.
+func (ctl *Control) msgHandler() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.Error("panic error: %v", err)
+			ctl.Error(string(debug.Stack()))
+		}
+	}()
+	defer ctl.msgHandlerShutdown.Done()
+
+	hbSend := time.NewTicker(time.Duration(g.GlbClientCfg.HeartBeatInterval) * time.Second)
+	defer hbSend.Stop()
+	hbCheck := time.NewTicker(time.Second)
+	defer hbCheck.Stop()
+
+	ctl.lastPong = time.Now()
+
+	for {
+		select {
+		case <-hbSend.C:
+			// send heartbeat to server
+			ctl.Debug("send heartbeat to server")
+			ctl.sendCh <- &msg.Ping{}
+		case <-hbCheck.C:
+			if time.Since(ctl.lastPong) > time.Duration(g.GlbClientCfg.HeartBeatTimeout)*time.Second {
+				ctl.Warn("heartbeat timeout")
+				// let reader() stop
+				ctl.conn.Close()
+				return
+			}
+		case rawMsg, ok := <-ctl.readCh:
+			if !ok {
+				return
+			}
+
+			switch m := rawMsg.(type) {
+			case *msg.ReqWorkConn:
+				go ctl.HandleReqWorkConn(m)
+			case *msg.NewProxyResp:
+				ctl.HandleNewProxyResp(m)
+			case *msg.Pong:
+				ctl.lastPong = time.Now()
+				ctl.Debug("receive heartbeat from server")
+			}
+		}
+	}
+}
+
+// If controler is notified by closedCh, reader and writer and handler will exit
+func (ctl *Control) worker() {
+	go ctl.msgHandler()
+	go ctl.reader()
+	go ctl.writer()
+
+	select {
+	case <-ctl.closedCh:
+		// close related channels and wait until other goroutines done
+		close(ctl.readCh)
+		ctl.readerShutdown.WaitDone()
+		ctl.msgHandlerShutdown.WaitDone()
+
+		close(ctl.sendCh)
+		ctl.writerShutdown.WaitDone()
+
+		ctl.pm.Close()
+		ctl.vm.Close()
+
+		close(ctl.closedDoneCh)
+		return
+	}
+}
+
+func (ctl *Control) ReloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) error {
+	ctl.vm.Reload(visitorCfgs)
+	ctl.pm.Reload(pxyCfgs)
+	return nil
+}

client/event/event.go

@@ -0,0 +1,28 @@
+package event
+
+import (
+	"errors"
+
+	"github.com/fatedier/frp/models/msg"
+)
+
+type EventType int
+
+const (
+	EvStartProxy EventType = iota
+	EvCloseProxy
+)
+
+var (
+	ErrPayloadType = errors.New("error payload type")
+)
+
+type EventHandler func(evType EventType, payload interface{}) error
+
+type StartProxyPayload struct {
+	NewProxyMsg *msg.NewProxy
+}
+
+type CloseProxyPayload struct {
+	CloseProxyMsg *msg.CloseProxy
+}

client/health/health.go

@@ -0,0 +1,178 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package health
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/fatedier/frp/utils/log"
+)
+
+var (
+	ErrHealthCheckType = errors.New("error health check type")
+)
+
+type HealthCheckMonitor struct {
+	checkType      string
+	interval       time.Duration
+	timeout        time.Duration
+	maxFailedTimes int
+
+	// For tcp
+	addr string
+
+	// For http
+	url string
+
+	failedTimes    uint64
+	statusOK       bool
+	statusNormalFn func()
+	statusFailedFn func()
+
+	ctx    context.Context
+	cancel context.CancelFunc
+
+	l log.Logger
+}
+
+func NewHealthCheckMonitor(checkType string, intervalS int, timeoutS int, maxFailedTimes int, addr string, url string,
+	statusNormalFn func(), statusFailedFn func()) *HealthCheckMonitor {
+
+	if intervalS <= 0 {
+		intervalS = 10
+	}
+	if timeoutS <= 0 {
+		timeoutS = 3
+	}
+	if maxFailedTimes <= 0 {
+		maxFailedTimes = 1
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	return &HealthCheckMonitor{
+		checkType:      checkType,
+		interval:       time.Duration(intervalS) * time.Second,
+		timeout:        time.Duration(timeoutS) * time.Second,
+		maxFailedTimes: maxFailedTimes,
+		addr:           addr,
+		url:            url,
+		statusOK:       false,
+		statusNormalFn: statusNormalFn,
+		statusFailedFn: statusFailedFn,
+		ctx:            ctx,
+		cancel:         cancel,
+	}
+}
+
+func (monitor *HealthCheckMonitor) SetLogger(l log.Logger) {
+	monitor.l = l
+}
+
+func (monitor *HealthCheckMonitor) Start() {
+	go monitor.checkWorker()
+}
+
+func (monitor *HealthCheckMonitor) Stop() {
+	monitor.cancel()
+}
+
+func (monitor *HealthCheckMonitor) checkWorker() {
+	for {
+		ctx, cancel := context.WithDeadline(monitor.ctx, time.Now().Add(monitor.timeout))
+		err := monitor.doCheck(ctx)
+
+		// check if this monitor has been closed
+		select {
+		case <-ctx.Done():
+			cancel()
+			return
+		default:
+			cancel()
+		}
+
+		if err == nil {
+			if monitor.l != nil {
+				monitor.l.Trace("do one health check success")
+			}
+			if !monitor.statusOK && monitor.statusNormalFn != nil {
+				if monitor.l != nil {
+					monitor.l.Info("health check status change to success")
+				}
+				monitor.statusOK = true
+				monitor.statusNormalFn()
+			}
+		} else {
+			if monitor.l != nil {
+				monitor.l.Warn("do one health check failed: %v", err)
+			}
+			monitor.failedTimes++
+			if monitor.statusOK && int(monitor.failedTimes) >= monitor.maxFailedTimes && monitor.statusFailedFn != nil {
+				if monitor.l != nil {
+					monitor.l.Warn("health check status change to failed")
+				}
+				monitor.statusOK = false
+				monitor.statusFailedFn()
+			}
+		}
+
+		time.Sleep(monitor.interval)
+	}
+}
+
+func (monitor *HealthCheckMonitor) doCheck(ctx context.Context) error {
+	switch monitor.checkType {
+	case "tcp":
+		return monitor.doTcpCheck(ctx)
+	case "http":
+		return monitor.doHttpCheck(ctx)
+	default:
+		return ErrHealthCheckType
+	}
+}
+
+func (monitor *HealthCheckMonitor) doTcpCheck(ctx context.Context) error {
+	// if tcp address is not specified, always return nil
+	if monitor.addr == "" {
+		return nil
+	}
+
+	var d net.Dialer
+	conn, err := d.DialContext(ctx, "tcp", monitor.addr)
+	if err != nil {
+		return err
+	}
+	conn.Close()
+	return nil
+}
+
+func (monitor *HealthCheckMonitor) doHttpCheck(ctx context.Context) error {
+	req, err := http.NewRequest("GET", monitor.url, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode/100 != 2 {
+		return fmt.Errorf("do http health check, StatusCode is [%d] not 2xx", resp.StatusCode)
+	}
+	return nil
+}

client/proxy/proxy.go

@@ -0,0 +1,455 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/models/plugin"
+	"github.com/fatedier/frp/models/proto/udp"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/fatedier/golib/errors"
+	frpIo "github.com/fatedier/golib/io"
+	"github.com/fatedier/golib/pool"
+)
+
+// Proxy defines how to handle work connections for different proxy type.
+type Proxy interface {
+	Run() error
+
+	// InWorkConn accept work connections registered to server.
+	InWorkConn(conn frpNet.Conn)
+
+	Close()
+	log.Logger
+}
+
+func NewProxy(pxyConf config.ProxyConf) (pxy Proxy) {
+	baseProxy := BaseProxy{
+		Logger: log.NewPrefixLogger(pxyConf.GetBaseInfo().ProxyName),
+	}
+	switch cfg := pxyConf.(type) {
+	case *config.TcpProxyConf:
+		pxy = &TcpProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	case *config.UdpProxyConf:
+		pxy = &UdpProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	case *config.HttpProxyConf:
+		pxy = &HttpProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	case *config.HttpsProxyConf:
+		pxy = &HttpsProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	case *config.StcpProxyConf:
+		pxy = &StcpProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	case *config.XtcpProxyConf:
+		pxy = &XtcpProxy{
+			BaseProxy: baseProxy,
+			cfg:       cfg,
+		}
+	}
+	return
+}
+
+type BaseProxy struct {
+	closed bool
+	mu     sync.RWMutex
+	log.Logger
+}
+
+// TCP
+type TcpProxy struct {
+	BaseProxy
+
+	cfg         *config.TcpProxyConf
+	proxyPlugin plugin.Plugin
+}
+
+func (pxy *TcpProxy) Run() (err error) {
+	if pxy.cfg.Plugin != "" {
+		pxy.proxyPlugin, err = plugin.Create(pxy.cfg.Plugin, pxy.cfg.PluginParams)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func (pxy *TcpProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *TcpProxy) InWorkConn(conn frpNet.Conn) {
+	HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
+		[]byte(g.GlbClientCfg.Token))
+}
+
+// HTTP
+type HttpProxy struct {
+	BaseProxy
+
+	cfg         *config.HttpProxyConf
+	proxyPlugin plugin.Plugin
+}
+
+func (pxy *HttpProxy) Run() (err error) {
+	if pxy.cfg.Plugin != "" {
+		pxy.proxyPlugin, err = plugin.Create(pxy.cfg.Plugin, pxy.cfg.PluginParams)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func (pxy *HttpProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *HttpProxy) InWorkConn(conn frpNet.Conn) {
+	HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
+		[]byte(g.GlbClientCfg.Token))
+}
+
+// HTTPS
+type HttpsProxy struct {
+	BaseProxy
+
+	cfg         *config.HttpsProxyConf
+	proxyPlugin plugin.Plugin
+}
+
+func (pxy *HttpsProxy) Run() (err error) {
+	if pxy.cfg.Plugin != "" {
+		pxy.proxyPlugin, err = plugin.Create(pxy.cfg.Plugin, pxy.cfg.PluginParams)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func (pxy *HttpsProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *HttpsProxy) InWorkConn(conn frpNet.Conn) {
+	HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
+		[]byte(g.GlbClientCfg.Token))
+}
+
+// STCP
+type StcpProxy struct {
+	BaseProxy
+
+	cfg         *config.StcpProxyConf
+	proxyPlugin plugin.Plugin
+}
+
+func (pxy *StcpProxy) Run() (err error) {
+	if pxy.cfg.Plugin != "" {
+		pxy.proxyPlugin, err = plugin.Create(pxy.cfg.Plugin, pxy.cfg.PluginParams)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func (pxy *StcpProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *StcpProxy) InWorkConn(conn frpNet.Conn) {
+	HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf, conn,
+		[]byte(g.GlbClientCfg.Token))
+}
+
+// XTCP
+type XtcpProxy struct {
+	BaseProxy
+
+	cfg         *config.XtcpProxyConf
+	proxyPlugin plugin.Plugin
+}
+
+func (pxy *XtcpProxy) Run() (err error) {
+	if pxy.cfg.Plugin != "" {
+		pxy.proxyPlugin, err = plugin.Create(pxy.cfg.Plugin, pxy.cfg.PluginParams)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+func (pxy *XtcpProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *XtcpProxy) InWorkConn(conn frpNet.Conn) {
+	defer conn.Close()
+	var natHoleSidMsg msg.NatHoleSid
+	err := msg.ReadMsgInto(conn, &natHoleSidMsg)
+	if err != nil {
+		pxy.Error("xtcp read from workConn error: %v", err)
+		return
+	}
+
+	natHoleClientMsg := &msg.NatHoleClient{
+		ProxyName: pxy.cfg.ProxyName,
+		Sid:       natHoleSidMsg.Sid,
+	}
+	raddr, _ := net.ResolveUDPAddr("udp",
+		fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, g.GlbClientCfg.ServerUdpPort))
+	clientConn, err := net.DialUDP("udp", nil, raddr)
+	defer clientConn.Close()
+
+	err = msg.WriteMsg(clientConn, natHoleClientMsg)
+	if err != nil {
+		pxy.Error("send natHoleClientMsg to server error: %v", err)
+		return
+	}
+
+	// Wait for client address at most 5 seconds.
+	var natHoleRespMsg msg.NatHoleResp
+	clientConn.SetReadDeadline(time.Now().Add(5 * time.Second))
+
+	buf := pool.GetBuf(1024)
+	n, err := clientConn.Read(buf)
+	if err != nil {
+		pxy.Error("get natHoleRespMsg error: %v", err)
+		return
+	}
+	err = msg.ReadMsgInto(bytes.NewReader(buf[:n]), &natHoleRespMsg)
+	if err != nil {
+		pxy.Error("get natHoleRespMsg error: %v", err)
+		return
+	}
+	clientConn.SetReadDeadline(time.Time{})
+	clientConn.Close()
+
+	if natHoleRespMsg.Error != "" {
+		pxy.Error("natHoleRespMsg get error info: %s", natHoleRespMsg.Error)
+		return
+	}
+
+	pxy.Trace("get natHoleRespMsg, sid [%s], client address [%s]", natHoleRespMsg.Sid, natHoleRespMsg.ClientAddr)
+
+	// Send sid to visitor udp address.
+	time.Sleep(time.Second)
+	laddr, _ := net.ResolveUDPAddr("udp", clientConn.LocalAddr().String())
+	daddr, err := net.ResolveUDPAddr("udp", natHoleRespMsg.VisitorAddr)
+	if err != nil {
+		pxy.Error("resolve visitor udp address error: %v", err)
+		return
+	}
+
+	lConn, err := net.DialUDP("udp", laddr, daddr)
+	if err != nil {
+		pxy.Error("dial visitor udp address error: %v", err)
+		return
+	}
+	lConn.Write([]byte(natHoleRespMsg.Sid))
+
+	kcpConn, err := frpNet.NewKcpConnFromUdp(lConn, true, natHoleRespMsg.VisitorAddr)
+	if err != nil {
+		pxy.Error("create kcp connection from udp connection error: %v", err)
+		return
+	}
+
+	HandleTcpWorkConnection(&pxy.cfg.LocalSvrConf, pxy.proxyPlugin, &pxy.cfg.BaseProxyConf,
+		frpNet.WrapConn(kcpConn), []byte(pxy.cfg.Sk))
+}
+
+// UDP
+type UdpProxy struct {
+	BaseProxy
+
+	cfg *config.UdpProxyConf
+
+	localAddr *net.UDPAddr
+	readCh    chan *msg.UdpPacket
+
+	// include msg.UdpPacket and msg.Ping
+	sendCh   chan msg.Message
+	workConn frpNet.Conn
+}
+
+func (pxy *UdpProxy) Run() (err error) {
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", pxy.cfg.LocalIp, pxy.cfg.LocalPort))
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (pxy *UdpProxy) Close() {
+	pxy.mu.Lock()
+	defer pxy.mu.Unlock()
+
+	if !pxy.closed {
+		pxy.closed = true
+		if pxy.workConn != nil {
+			pxy.workConn.Close()
+		}
+		if pxy.readCh != nil {
+			close(pxy.readCh)
+		}
+		if pxy.sendCh != nil {
+			close(pxy.sendCh)
+		}
+	}
+}
+
+func (pxy *UdpProxy) InWorkConn(conn frpNet.Conn) {
+	pxy.Info("incoming a new work connection for udp proxy, %s", conn.RemoteAddr().String())
+	// close resources releated with old workConn
+	pxy.Close()
+
+	pxy.mu.Lock()
+	pxy.workConn = conn
+	pxy.readCh = make(chan *msg.UdpPacket, 1024)
+	pxy.sendCh = make(chan msg.Message, 1024)
+	pxy.closed = false
+	pxy.mu.Unlock()
+
+	workConnReaderFn := func(conn net.Conn, readCh chan *msg.UdpPacket) {
+		for {
+			var udpMsg msg.UdpPacket
+			if errRet := msg.ReadMsgInto(conn, &udpMsg); errRet != nil {
+				pxy.Warn("read from workConn for udp error: %v", errRet)
+				return
+			}
+			if errRet := errors.PanicToError(func() {
+				pxy.Trace("get udp package from workConn: %s", udpMsg.Content)
+				readCh <- &udpMsg
+			}); errRet != nil {
+				pxy.Info("reader goroutine for udp work connection closed: %v", errRet)
+				return
+			}
+		}
+	}
+	workConnSenderFn := func(conn net.Conn, sendCh chan msg.Message) {
+		defer func() {
+			pxy.Info("writer goroutine for udp work connection closed")
+		}()
+		var errRet error
+		for rawMsg := range sendCh {
+			switch m := rawMsg.(type) {
+			case *msg.UdpPacket:
+				pxy.Trace("send udp package to workConn: %s", m.Content)
+			case *msg.Ping:
+				pxy.Trace("send ping message to udp workConn")
+			}
+			if errRet = msg.WriteMsg(conn, rawMsg); errRet != nil {
+				pxy.Error("udp work write error: %v", errRet)
+				return
+			}
+		}
+	}
+	heartbeatFn := func(conn net.Conn, sendCh chan msg.Message) {
+		var errRet error
+		for {
+			time.Sleep(time.Duration(30) * time.Second)
+			if errRet = errors.PanicToError(func() {
+				sendCh <- &msg.Ping{}
+			}); errRet != nil {
+				pxy.Trace("heartbeat goroutine for udp work connection closed")
+				break
+			}
+		}
+	}
+
+	go workConnSenderFn(pxy.workConn, pxy.sendCh)
+	go workConnReaderFn(pxy.workConn, pxy.readCh)
+	go heartbeatFn(pxy.workConn, pxy.sendCh)
+	udp.Forwarder(pxy.localAddr, pxy.readCh, pxy.sendCh)
+}
+
+// Common handler for tcp work connections.
+func HandleTcpWorkConnection(localInfo *config.LocalSvrConf, proxyPlugin plugin.Plugin,
+	baseInfo *config.BaseProxyConf, workConn frpNet.Conn, encKey []byte) {
+
+	var (
+		remote io.ReadWriteCloser
+		err    error
+	)
+	remote = workConn
+
+	if baseInfo.UseEncryption {
+		remote, err = frpIo.WithEncryption(remote, encKey)
+		if err != nil {
+			workConn.Close()
+			workConn.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if baseInfo.UseCompression {
+		remote = frpIo.WithCompression(remote)
+	}
+
+	if proxyPlugin != nil {
+		// if plugin is set, let plugin handle connections first
+		workConn.Debug("handle by plugin: %s", proxyPlugin.Name())
+		proxyPlugin.Handle(remote, workConn)
+		workConn.Debug("handle by plugin finished")
+		return
+	} else {
+		localConn, err := frpNet.ConnectServer("tcp", fmt.Sprintf("%s:%d", localInfo.LocalIp, localInfo.LocalPort))
+		if err != nil {
+			workConn.Close()
+			workConn.Error("connect to local service [%s:%d] error: %v", localInfo.LocalIp, localInfo.LocalPort, err)
+			return
+		}
+
+		workConn.Debug("join connections, localConn(l[%s] r[%s]) workConn(l[%s] r[%s])", localConn.LocalAddr().String(),
+			localConn.RemoteAddr().String(), workConn.LocalAddr().String(), workConn.RemoteAddr().String())
+		frpIo.Join(localConn, remote)
+		workConn.Debug("join connections closed")
+	}
+}

client/proxy/proxy_manager.go

@@ -0,0 +1,139 @@
+package proxy
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/fatedier/frp/client/event"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/fatedier/golib/errors"
+)
+
+type ProxyManager struct {
+	sendCh  chan (msg.Message)
+	proxies map[string]*ProxyWrapper
+
+	closed bool
+	mu     sync.RWMutex
+
+	logPrefix string
+	log.Logger
+}
+
+func NewProxyManager(msgSendCh chan (msg.Message), logPrefix string) *ProxyManager {
+	return &ProxyManager{
+		proxies:   make(map[string]*ProxyWrapper),
+		sendCh:    msgSendCh,
+		closed:    false,
+		logPrefix: logPrefix,
+		Logger:    log.NewPrefixLogger(logPrefix),
+	}
+}
+
+func (pm *ProxyManager) StartProxy(name string, remoteAddr string, serverRespErr string) error {
+	pm.mu.RLock()
+	pxy, ok := pm.proxies[name]
+	pm.mu.RUnlock()
+	if !ok {
+		return fmt.Errorf("proxy [%s] not found", name)
+	}
+
+	err := pxy.SetRunningStatus(remoteAddr, serverRespErr)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (pm *ProxyManager) Close() {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	for _, pxy := range pm.proxies {
+		pxy.Stop()
+	}
+	pm.proxies = make(map[string]*ProxyWrapper)
+}
+
+func (pm *ProxyManager) HandleWorkConn(name string, workConn frpNet.Conn) {
+	pm.mu.RLock()
+	pw, ok := pm.proxies[name]
+	pm.mu.RUnlock()
+	if ok {
+		pw.InWorkConn(workConn)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pm *ProxyManager) HandleEvent(evType event.EventType, payload interface{}) error {
+	var m msg.Message
+	switch e := payload.(type) {
+	case *event.StartProxyPayload:
+		m = e.NewProxyMsg
+	case *event.CloseProxyPayload:
+		m = e.CloseProxyMsg
+	default:
+		return event.ErrPayloadType
+	}
+
+	err := errors.PanicToError(func() {
+		pm.sendCh <- m
+	})
+	return err
+}
+
+func (pm *ProxyManager) GetAllProxyStatus() []*ProxyStatus {
+	ps := make([]*ProxyStatus, 0)
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	for _, pxy := range pm.proxies {
+		ps = append(ps, pxy.GetStatus())
+	}
+	return ps
+}
+
+func (pm *ProxyManager) Reload(pxyCfgs map[string]config.ProxyConf) {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+
+	delPxyNames := make([]string, 0)
+	for name, pxy := range pm.proxies {
+		del := false
+		cfg, ok := pxyCfgs[name]
+		if !ok {
+			del = true
+		} else {
+			if !pxy.Cfg.Compare(cfg) {
+				del = true
+			}
+		}
+
+		if del {
+			delPxyNames = append(delPxyNames, name)
+			delete(pm.proxies, name)
+
+			pxy.Stop()
+		}
+	}
+	if len(delPxyNames) > 0 {
+		pm.Info("proxy removed: %v", delPxyNames)
+	}
+
+	addPxyNames := make([]string, 0)
+	for name, cfg := range pxyCfgs {
+		if _, ok := pm.proxies[name]; !ok {
+			pxy := NewProxyWrapper(cfg, pm.HandleEvent, pm.logPrefix)
+			pm.proxies[name] = pxy
+			addPxyNames = append(addPxyNames, name)
+
+			pxy.Start()
+		}
+	}
+	if len(addPxyNames) > 0 {
+		pm.Info("proxy added: %v", addPxyNames)
+	}
+}

client/proxy/proxy_wrapper.go

@@ -0,0 +1,244 @@
+package proxy
+
+import (
+	"fmt"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/fatedier/frp/client/event"
+	"github.com/fatedier/frp/client/health"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/fatedier/golib/errors"
+)
+
+const (
+	ProxyStatusNew         = "new"
+	ProxyStatusWaitStart   = "wait start"
+	ProxyStatusStartErr    = "start error"
+	ProxyStatusRunning     = "running"
+	ProxyStatusCheckFailed = "check failed"
+	ProxyStatusClosed      = "closed"
+)
+
+var (
+	statusCheckInterval time.Duration = 3 * time.Second
+	waitResponseTimeout               = 20 * time.Second
+	startErrTimeout                   = 30 * time.Second
+)
+
+type ProxyStatus struct {
+	Name   string           `json:"name"`
+	Type   string           `json:"type"`
+	Status string           `json:"status"`
+	Err    string           `json:"err"`
+	Cfg    config.ProxyConf `json:"cfg"`
+
+	// Got from server.
+	RemoteAddr string `json:"remote_addr"`
+}
+
+type ProxyWrapper struct {
+	ProxyStatus
+
+	// underlying proxy
+	pxy Proxy
+
+	// if ProxyConf has healcheck config
+	// monitor will watch if it is alive
+	monitor *health.HealthCheckMonitor
+
+	// event handler
+	handler event.EventHandler
+
+	health           uint32
+	lastSendStartMsg time.Time
+	lastStartErr     time.Time
+	closeCh          chan struct{}
+	healthNotifyCh   chan struct{}
+	mu               sync.RWMutex
+
+	log.Logger
+}
+
+func NewProxyWrapper(cfg config.ProxyConf, eventHandler event.EventHandler, logPrefix string) *ProxyWrapper {
+	baseInfo := cfg.GetBaseInfo()
+	pw := &ProxyWrapper{
+		ProxyStatus: ProxyStatus{
+			Name:   baseInfo.ProxyName,
+			Type:   baseInfo.ProxyType,
+			Status: ProxyStatusNew,
+			Cfg:    cfg,
+		},
+		closeCh:        make(chan struct{}),
+		healthNotifyCh: make(chan struct{}),
+		handler:        eventHandler,
+		Logger:         log.NewPrefixLogger(logPrefix),
+	}
+	pw.AddLogPrefix(pw.Name)
+
+	if baseInfo.HealthCheckType != "" {
+		pw.health = 1 // means failed
+		pw.monitor = health.NewHealthCheckMonitor(baseInfo.HealthCheckType, baseInfo.HealthCheckIntervalS,
+			baseInfo.HealthCheckTimeoutS, baseInfo.HealthCheckMaxFailed, baseInfo.HealthCheckAddr,
+			baseInfo.HealthCheckUrl, pw.statusNormalCallback, pw.statusFailedCallback)
+		pw.monitor.SetLogger(pw.Logger)
+		pw.Trace("enable health check monitor")
+	}
+
+	pw.pxy = NewProxy(pw.Cfg)
+	return pw
+}
+
+func (pw *ProxyWrapper) SetRunningStatus(remoteAddr string, respErr string) error {
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	if pw.Status != ProxyStatusWaitStart {
+		return fmt.Errorf("status not wait start, ignore start message")
+	}
+
+	pw.RemoteAddr = remoteAddr
+	if respErr != "" {
+		pw.Status = ProxyStatusStartErr
+		pw.Err = respErr
+		pw.lastStartErr = time.Now()
+		return fmt.Errorf(pw.Err)
+	}
+
+	if err := pw.pxy.Run(); err != nil {
+		pw.Status = ProxyStatusStartErr
+		pw.Err = err.Error()
+		pw.lastStartErr = time.Now()
+		return err
+	}
+
+	pw.Status = ProxyStatusRunning
+	pw.Err = ""
+	return nil
+}
+
+func (pw *ProxyWrapper) Start() {
+	go pw.checkWorker()
+	if pw.monitor != nil {
+		go pw.monitor.Start()
+	}
+}
+
+func (pw *ProxyWrapper) Stop() {
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	close(pw.closeCh)
+	close(pw.healthNotifyCh)
+	pw.pxy.Close()
+	if pw.monitor != nil {
+		pw.monitor.Stop()
+	}
+	pw.Status = ProxyStatusClosed
+
+	pw.handler(event.EvCloseProxy, &event.CloseProxyPayload{
+		CloseProxyMsg: &msg.CloseProxy{
+			ProxyName: pw.Name,
+		},
+	})
+}
+
+func (pw *ProxyWrapper) checkWorker() {
+	if pw.monitor != nil {
+		// let monitor do check request first
+		time.Sleep(500 * time.Millisecond)
+	}
+	for {
+		// check proxy status
+		now := time.Now()
+		if atomic.LoadUint32(&pw.health) == 0 {
+			pw.mu.Lock()
+			if pw.Status == ProxyStatusNew ||
+				pw.Status == ProxyStatusCheckFailed ||
+				(pw.Status == ProxyStatusWaitStart && now.After(pw.lastSendStartMsg.Add(waitResponseTimeout))) ||
+				(pw.Status == ProxyStatusStartErr && now.After(pw.lastStartErr.Add(startErrTimeout))) {
+
+				pw.Trace("change status from [%s] to [%s]", pw.Status, ProxyStatusWaitStart)
+				pw.Status = ProxyStatusWaitStart
+
+				var newProxyMsg msg.NewProxy
+				pw.Cfg.MarshalToMsg(&newProxyMsg)
+				pw.lastSendStartMsg = now
+				pw.handler(event.EvStartProxy, &event.StartProxyPayload{
+					NewProxyMsg: &newProxyMsg,
+				})
+			}
+			pw.mu.Unlock()
+		} else {
+			pw.mu.Lock()
+			if pw.Status == ProxyStatusRunning || pw.Status == ProxyStatusWaitStart {
+				pw.handler(event.EvCloseProxy, &event.CloseProxyPayload{
+					CloseProxyMsg: &msg.CloseProxy{
+						ProxyName: pw.Name,
+					},
+				})
+				pw.Trace("change status from [%s] to [%s]", pw.Status, ProxyStatusCheckFailed)
+				pw.Status = ProxyStatusCheckFailed
+			}
+			pw.mu.Unlock()
+		}
+
+		select {
+		case <-pw.closeCh:
+			return
+		case <-time.After(statusCheckInterval):
+		case <-pw.healthNotifyCh:
+		}
+	}
+}
+
+func (pw *ProxyWrapper) statusNormalCallback() {
+	atomic.StoreUint32(&pw.health, 0)
+	errors.PanicToError(func() {
+		select {
+		case pw.healthNotifyCh <- struct{}{}:
+		default:
+		}
+	})
+	pw.Info("health check success")
+}
+
+func (pw *ProxyWrapper) statusFailedCallback() {
+	atomic.StoreUint32(&pw.health, 1)
+	errors.PanicToError(func() {
+		select {
+		case pw.healthNotifyCh <- struct{}{}:
+		default:
+		}
+	})
+	pw.Info("health check failed")
+}
+
+func (pw *ProxyWrapper) InWorkConn(workConn frpNet.Conn) {
+	pw.mu.RLock()
+	pxy := pw.pxy
+	pw.mu.RUnlock()
+	if pxy != nil {
+		workConn.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
+		go pxy.InWorkConn(workConn)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pw *ProxyWrapper) GetStatus() *ProxyStatus {
+	pw.mu.RLock()
+	defer pw.mu.RUnlock()
+	ps := &ProxyStatus{
+		Name:       pw.Name,
+		Type:       pw.Type,
+		Status:     pw.Status,
+		Err:        pw.Err,
+		Cfg:        pw.Cfg,
+		RemoteAddr: pw.RemoteAddr,
+	}
+	return ps
+}

client/service.go

@@ -0,0 +1,223 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"fmt"
+	"io/ioutil"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/util"
+	"github.com/fatedier/frp/utils/version"
+
+	fmux "github.com/hashicorp/yamux"
+)
+
+type Service struct {
+	// uniq id got from frps, attach it in loginMsg
+	runId string
+
+	// manager control connection with server
+	ctl   *Control
+	ctlMu sync.RWMutex
+
+	pxyCfgs     map[string]config.ProxyConf
+	visitorCfgs map[string]config.VisitorConf
+	cfgMu       sync.RWMutex
+
+	exit     uint32 // 0 means not exit
+	closedCh chan int
+}
+
+func NewService(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) (svr *Service) {
+	svr = &Service{
+		pxyCfgs:     pxyCfgs,
+		visitorCfgs: visitorCfgs,
+		exit:        0,
+		closedCh:    make(chan int),
+	}
+	return
+}
+
+func (svr *Service) GetController() *Control {
+	svr.ctlMu.RLock()
+	defer svr.ctlMu.RUnlock()
+	return svr.ctl
+}
+
+func (svr *Service) Run() error {
+	// first login
+	for {
+		conn, session, err := svr.login()
+		if err != nil {
+			log.Warn("login to server failed: %v", err)
+
+			// if login_fail_exit is true, just exit this program
+			// otherwise sleep a while and try again to connect to server
+			if g.GlbClientCfg.LoginFailExit {
+				return err
+			} else {
+				time.Sleep(10 * time.Second)
+			}
+		} else {
+			// login success
+			ctl := NewControl(svr.runId, conn, session, svr.pxyCfgs, svr.visitorCfgs)
+			ctl.Run()
+			svr.ctlMu.Lock()
+			svr.ctl = ctl
+			svr.ctlMu.Unlock()
+			break
+		}
+	}
+
+	go svr.keepControllerWorking()
+
+	if g.GlbClientCfg.AdminPort != 0 {
+		err := svr.RunAdminServer(g.GlbClientCfg.AdminAddr, g.GlbClientCfg.AdminPort)
+		if err != nil {
+			log.Warn("run admin server error: %v", err)
+		}
+		log.Info("admin server listen on %s:%d", g.GlbClientCfg.AdminAddr, g.GlbClientCfg.AdminPort)
+	}
+
+	<-svr.closedCh
+	return nil
+}
+
+func (svr *Service) keepControllerWorking() {
+	maxDelayTime := 20 * time.Second
+	delayTime := time.Second
+
+	for {
+		<-svr.ctl.ClosedDoneCh()
+		if atomic.LoadUint32(&svr.exit) != 0 {
+			return
+		}
+
+		for {
+			log.Info("try to reconnect to server...")
+			conn, session, err := svr.login()
+			if err != nil {
+				log.Warn("reconnect to server error: %v", err)
+				time.Sleep(delayTime)
+				delayTime = delayTime * 2
+				if delayTime > maxDelayTime {
+					delayTime = maxDelayTime
+				}
+				continue
+			}
+			// reconnect success, init delayTime
+			delayTime = time.Second
+
+			ctl := NewControl(svr.runId, conn, session, svr.pxyCfgs, svr.visitorCfgs)
+			ctl.Run()
+			svr.ctlMu.Lock()
+			svr.ctl = ctl
+			svr.ctlMu.Unlock()
+			break
+		}
+	}
+}
+
+// login creates a connection to frps and registers it self as a client
+// conn: control connection
+// session: if it's not nil, using tcp mux
+func (svr *Service) login() (conn frpNet.Conn, session *fmux.Session, err error) {
+	conn, err = frpNet.ConnectServerByProxy(g.GlbClientCfg.HttpProxy, g.GlbClientCfg.Protocol,
+		fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, g.GlbClientCfg.ServerPort))
+	if err != nil {
+		return
+	}
+
+	defer func() {
+		if err != nil {
+			conn.Close()
+		}
+	}()
+
+	if g.GlbClientCfg.TcpMux {
+		fmuxCfg := fmux.DefaultConfig()
+		fmuxCfg.KeepAliveInterval = 20 * time.Second
+		fmuxCfg.LogOutput = ioutil.Discard
+		session, err = fmux.Client(conn, fmuxCfg)
+		if err != nil {
+			return
+		}
+		stream, errRet := session.OpenStream()
+		if errRet != nil {
+			session.Close()
+			err = errRet
+			return
+		}
+		conn = frpNet.WrapConn(stream)
+	}
+
+	now := time.Now().Unix()
+	loginMsg := &msg.Login{
+		Arch:         runtime.GOARCH,
+		Os:           runtime.GOOS,
+		PoolCount:    g.GlbClientCfg.PoolCount,
+		User:         g.GlbClientCfg.User,
+		Version:      version.Full(),
+		PrivilegeKey: util.GetAuthKey(g.GlbClientCfg.Token, now),
+		Timestamp:    now,
+		RunId:        svr.runId,
+	}
+
+	if err = msg.WriteMsg(conn, loginMsg); err != nil {
+		return
+	}
+
+	var loginRespMsg msg.LoginResp
+	conn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	if err = msg.ReadMsgInto(conn, &loginRespMsg); err != nil {
+		return
+	}
+	conn.SetReadDeadline(time.Time{})
+
+	if loginRespMsg.Error != "" {
+		err = fmt.Errorf("%s", loginRespMsg.Error)
+		log.Error("%s", loginRespMsg.Error)
+		return
+	}
+
+	svr.runId = loginRespMsg.RunId
+	g.GlbClientCfg.ServerUdpPort = loginRespMsg.ServerUdpPort
+	log.Info("login to server success, get run id [%s], server udp port [%d]", loginRespMsg.RunId, loginRespMsg.ServerUdpPort)
+	return
+}
+
+func (svr *Service) ReloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) error {
+	svr.cfgMu.Lock()
+	svr.pxyCfgs = pxyCfgs
+	svr.visitorCfgs = visitorCfgs
+	svr.cfgMu.Unlock()
+
+	return svr.ctl.ReloadConf(pxyCfgs, visitorCfgs)
+}
+
+func (svr *Service) Close() {
+	atomic.StoreUint32(&svr.exit, 1)
+	svr.ctl.Close()
+	close(svr.closedCh)
+}

client/visitor.go

@@ -0,0 +1,338 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/net/ipv4"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/util"
+
+	frpIo "github.com/fatedier/golib/io"
+	"github.com/fatedier/golib/pool"
+)
+
+// Visitor is used for forward traffics from local port tot remote service.
+type Visitor interface {
+	Run() error
+	Close()
+	log.Logger
+}
+
+func NewVisitor(ctl *Control, cfg config.VisitorConf) (visitor Visitor) {
+	baseVisitor := BaseVisitor{
+		ctl:    ctl,
+		Logger: log.NewPrefixLogger(cfg.GetBaseInfo().ProxyName),
+	}
+	switch cfg := cfg.(type) {
+	case *config.StcpVisitorConf:
+		visitor = &StcpVisitor{
+			BaseVisitor: baseVisitor,
+			cfg:         cfg,
+		}
+	case *config.XtcpVisitorConf:
+		visitor = &XtcpVisitor{
+			BaseVisitor: baseVisitor,
+			cfg:         cfg,
+		}
+	}
+	return
+}
+
+type BaseVisitor struct {
+	ctl    *Control
+	l      frpNet.Listener
+	closed bool
+	mu     sync.RWMutex
+	log.Logger
+}
+
+type StcpVisitor struct {
+	BaseVisitor
+
+	cfg *config.StcpVisitorConf
+}
+
+func (sv *StcpVisitor) Run() (err error) {
+	sv.l, err = frpNet.ListenTcp(sv.cfg.BindAddr, sv.cfg.BindPort)
+	if err != nil {
+		return
+	}
+
+	go sv.worker()
+	return
+}
+
+func (sv *StcpVisitor) Close() {
+	sv.l.Close()
+}
+
+func (sv *StcpVisitor) worker() {
+	for {
+		conn, err := sv.l.Accept()
+		if err != nil {
+			sv.Warn("stcp local listener closed")
+			return
+		}
+
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *StcpVisitor) handleConn(userConn frpNet.Conn) {
+	defer userConn.Close()
+
+	sv.Debug("get a new stcp user connection")
+	visitorConn, err := sv.ctl.connectServer()
+	if err != nil {
+		return
+	}
+	defer visitorConn.Close()
+
+	now := time.Now().Unix()
+	newVisitorConnMsg := &msg.NewVisitorConn{
+		ProxyName:      sv.cfg.ServerName,
+		SignKey:        util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp:      now,
+		UseEncryption:  sv.cfg.UseEncryption,
+		UseCompression: sv.cfg.UseCompression,
+	}
+	err = msg.WriteMsg(visitorConn, newVisitorConnMsg)
+	if err != nil {
+		sv.Warn("send newVisitorConnMsg to server error: %v", err)
+		return
+	}
+
+	var newVisitorConnRespMsg msg.NewVisitorConnResp
+	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
+	if err != nil {
+		sv.Warn("get newVisitorConnRespMsg error: %v", err)
+		return
+	}
+	visitorConn.SetReadDeadline(time.Time{})
+
+	if newVisitorConnRespMsg.Error != "" {
+		sv.Warn("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
+		return
+	}
+
+	var remote io.ReadWriteCloser
+	remote = visitorConn
+	if sv.cfg.UseEncryption {
+		remote, err = frpIo.WithEncryption(remote, []byte(sv.cfg.Sk))
+		if err != nil {
+			sv.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+
+	if sv.cfg.UseCompression {
+		remote = frpIo.WithCompression(remote)
+	}
+
+	frpIo.Join(userConn, remote)
+}
+
+type XtcpVisitor struct {
+	BaseVisitor
+
+	cfg *config.XtcpVisitorConf
+}
+
+func (sv *XtcpVisitor) Run() (err error) {
+	sv.l, err = frpNet.ListenTcp(sv.cfg.BindAddr, sv.cfg.BindPort)
+	if err != nil {
+		return
+	}
+
+	go sv.worker()
+	return
+}
+
+func (sv *XtcpVisitor) Close() {
+	sv.l.Close()
+}
+
+func (sv *XtcpVisitor) worker() {
+	for {
+		conn, err := sv.l.Accept()
+		if err != nil {
+			sv.Warn("xtcp local listener closed")
+			return
+		}
+
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *XtcpVisitor) handleConn(userConn frpNet.Conn) {
+	defer userConn.Close()
+
+	sv.Debug("get a new xtcp user connection")
+	if g.GlbClientCfg.ServerUdpPort == 0 {
+		sv.Error("xtcp is not supported by server")
+		return
+	}
+
+	raddr, err := net.ResolveUDPAddr("udp",
+		fmt.Sprintf("%s:%d", g.GlbClientCfg.ServerAddr, g.GlbClientCfg.ServerUdpPort))
+	if err != nil {
+		sv.Error("resolve server UDP addr error")
+		return
+	}
+
+	visitorConn, err := net.DialUDP("udp", nil, raddr)
+	if err != nil {
+		sv.Warn("dial server udp addr error: %v", err)
+		return
+	}
+	defer visitorConn.Close()
+
+	now := time.Now().Unix()
+	natHoleVisitorMsg := &msg.NatHoleVisitor{
+		ProxyName: sv.cfg.ServerName,
+		SignKey:   util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp: now,
+	}
+	err = msg.WriteMsg(visitorConn, natHoleVisitorMsg)
+	if err != nil {
+		sv.Warn("send natHoleVisitorMsg to server error: %v", err)
+		return
+	}
+
+	// Wait for client address at most 10 seconds.
+	var natHoleRespMsg msg.NatHoleResp
+	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	buf := pool.GetBuf(1024)
+	n, err := visitorConn.Read(buf)
+	if err != nil {
+		sv.Warn("get natHoleRespMsg error: %v", err)
+		return
+	}
+
+	err = msg.ReadMsgInto(bytes.NewReader(buf[:n]), &natHoleRespMsg)
+	if err != nil {
+		sv.Warn("get natHoleRespMsg error: %v", err)
+		return
+	}
+	visitorConn.SetReadDeadline(time.Time{})
+	pool.PutBuf(buf)
+
+	if natHoleRespMsg.Error != "" {
+		sv.Error("natHoleRespMsg get error info: %s", natHoleRespMsg.Error)
+		return
+	}
+
+	sv.Trace("get natHoleRespMsg, sid [%s], client address [%s]", natHoleRespMsg.Sid, natHoleRespMsg.ClientAddr)
+
+	// Close visitorConn, so we can use it's local address.
+	visitorConn.Close()
+
+	// Send detect message.
+	array := strings.Split(natHoleRespMsg.ClientAddr, ":")
+	if len(array) <= 1 {
+		sv.Error("get natHoleResp client address error: %s", natHoleRespMsg.ClientAddr)
+		return
+	}
+	laddr, _ := net.ResolveUDPAddr("udp", visitorConn.LocalAddr().String())
+	/*
+		for i := 1000; i < 65000; i++ {
+			sv.sendDetectMsg(array[0], int64(i), laddr, "a")
+		}
+	*/
+	port, err := strconv.ParseInt(array[1], 10, 64)
+	if err != nil {
+		sv.Error("get natHoleResp client address error: %s", natHoleRespMsg.ClientAddr)
+		return
+	}
+	sv.sendDetectMsg(array[0], int(port), laddr, []byte(natHoleRespMsg.Sid))
+	sv.Trace("send all detect msg done")
+
+	// Listen for visitorConn's address and wait for client connection.
+	lConn, err := net.ListenUDP("udp", laddr)
+	if err != nil {
+		sv.Error("listen on visitorConn's local adress error: %v", err)
+		return
+	}
+	lConn.SetReadDeadline(time.Now().Add(5 * time.Second))
+	sidBuf := pool.GetBuf(1024)
+	n, _, err = lConn.ReadFromUDP(sidBuf)
+	if err != nil {
+		sv.Warn("get sid from client error: %v", err)
+		return
+	}
+	lConn.SetReadDeadline(time.Time{})
+	if string(sidBuf[:n]) != natHoleRespMsg.Sid {
+		sv.Warn("incorrect sid from client")
+		return
+	}
+	sv.Info("nat hole connection make success, sid [%s]", string(sidBuf[:n]))
+	pool.PutBuf(sidBuf)
+
+	var remote io.ReadWriteCloser
+	remote, err = frpNet.NewKcpConnFromUdp(lConn, false, natHoleRespMsg.ClientAddr)
+	if err != nil {
+		sv.Error("create kcp connection from udp connection error: %v", err)
+		return
+	}
+
+	if sv.cfg.UseEncryption {
+		remote, err = frpIo.WithEncryption(remote, []byte(sv.cfg.Sk))
+		if err != nil {
+			sv.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+
+	if sv.cfg.UseCompression {
+		remote = frpIo.WithCompression(remote)
+	}
+
+	frpIo.Join(userConn, remote)
+	sv.Debug("join connections closed")
+}
+
+func (sv *XtcpVisitor) sendDetectMsg(addr string, port int, laddr *net.UDPAddr, content []byte) (err error) {
+	daddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", addr, port))
+	if err != nil {
+		return err
+	}
+
+	tConn, err := net.DialUDP("udp", laddr, daddr)
+	if err != nil {
+		return err
+	}
+
+	uConn := ipv4.NewConn(tConn)
+	uConn.SetTTL(3)
+
+	tConn.Write(content)
+	tConn.Close()
+	return nil
+}

client/visitor_manager.go

@@ -0,0 +1,123 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/utils/log"
+)
+
+type VisitorManager struct {
+	ctl *Control
+
+	cfgs     map[string]config.VisitorConf
+	visitors map[string]Visitor
+
+	checkInterval time.Duration
+
+	mu sync.Mutex
+}
+
+func NewVisitorManager(ctl *Control) *VisitorManager {
+	return &VisitorManager{
+		ctl:           ctl,
+		cfgs:          make(map[string]config.VisitorConf),
+		visitors:      make(map[string]Visitor),
+		checkInterval: 10 * time.Second,
+	}
+}
+
+func (vm *VisitorManager) Run() {
+	for {
+		time.Sleep(vm.checkInterval)
+		vm.mu.Lock()
+		for _, cfg := range vm.cfgs {
+			name := cfg.GetBaseInfo().ProxyName
+			if _, exist := vm.visitors[name]; !exist {
+				log.Info("try to start visitor [%s]", name)
+				vm.startVisitor(cfg)
+			}
+		}
+		vm.mu.Unlock()
+	}
+}
+
+// Hold lock before calling this function.
+func (vm *VisitorManager) startVisitor(cfg config.VisitorConf) (err error) {
+	name := cfg.GetBaseInfo().ProxyName
+	visitor := NewVisitor(vm.ctl, cfg)
+	err = visitor.Run()
+	if err != nil {
+		visitor.Warn("start error: %v", err)
+	} else {
+		vm.visitors[name] = visitor
+		visitor.Info("start visitor success")
+	}
+	return
+}
+
+func (vm *VisitorManager) Reload(cfgs map[string]config.VisitorConf) {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+
+	delNames := make([]string, 0)
+	for name, oldCfg := range vm.cfgs {
+		del := false
+		cfg, ok := cfgs[name]
+		if !ok {
+			del = true
+		} else {
+			if !oldCfg.Compare(cfg) {
+				del = true
+			}
+		}
+
+		if del {
+			delNames = append(delNames, name)
+			delete(vm.cfgs, name)
+			if visitor, ok := vm.visitors[name]; ok {
+				visitor.Close()
+			}
+			delete(vm.visitors, name)
+		}
+	}
+	if len(delNames) > 0 {
+		log.Info("visitor removed: %v", delNames)
+	}
+
+	addNames := make([]string, 0)
+	for name, cfg := range cfgs {
+		if _, ok := vm.cfgs[name]; !ok {
+			vm.cfgs[name] = cfg
+			addNames = append(addNames, name)
+			vm.startVisitor(cfg)
+		}
+	}
+	if len(addNames) > 0 {
+		log.Info("visitor added: %v", addNames)
+	}
+	return
+}
+
+func (vm *VisitorManager) Close() {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+	for _, v := range vm.visitors {
+		v.Close()
+	}
+}

cmd/frpc/main.go

@@ -12,16 +12,16 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package config
+package main // "github.com/fatedier/frp/cmd/frpc"
 
-type BaseConf struct {
-	Name              string
-	AuthToken         string
-	Type              string
-	UseEncryption     bool
-	UseGzip           bool
-	PrivilegeMode     bool
-	PrivilegeToken    string
-	PoolCount         int64
-	HostHeaderRewrite string
+import (
+	"github.com/fatedier/frp/cmd/frpc/sub"
+
+	"github.com/fatedier/golib/crypto"
+)
+
+func main() {
+	crypto.DefaultSalt = "frp"
+
+	sub.Execute()
 }

cmd/frpc/sub/http.go

@@ -0,0 +1,96 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	httpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	httpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	httpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	httpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	httpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	httpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	httpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	httpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	httpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	httpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	httpCmd.PersistentFlags().StringVarP(&customDomains, "custom_domain", "d", "", "custom domain")
+	httpCmd.PersistentFlags().StringVarP(&subDomain, "sd", "", "", "sub domain")
+	httpCmd.PersistentFlags().StringVarP(&locations, "locations", "", "", "locations")
+	httpCmd.PersistentFlags().StringVarP(&httpUser, "http_user", "", "", "http auth user")
+	httpCmd.PersistentFlags().StringVarP(&httpPwd, "http_pwd", "", "", "http auth password")
+	httpCmd.PersistentFlags().StringVarP(&hostHeaderRewrite, "host_header_rewrite", "", "", "host header rewrite")
+	httpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	httpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(httpCmd)
+}
+
+var httpCmd = &cobra.Command{
+	Use:   "http",
+	Short: "Run frpc with a single http proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.HttpProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.HttpProxy
+		cfg.LocalIp = localIp
+		cfg.LocalPort = localPort
+		cfg.CustomDomains = strings.Split(customDomains, ",")
+		cfg.SubDomain = subDomain
+		cfg.Locations = strings.Split(locations, ",")
+		cfg.HttpUser = httpUser
+		cfg.HttpPwd = httpPwd
+		cfg.HostHeaderRewrite = hostHeaderRewrite
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+
+		err = cfg.CheckForCli()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(proxyConfs, nil)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/https.go

@@ -0,0 +1,88 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	httpsCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	httpsCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	httpsCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	httpsCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	httpsCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	httpsCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	httpsCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	httpsCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	httpsCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	httpsCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	httpsCmd.PersistentFlags().StringVarP(&customDomains, "custom_domain", "d", "", "custom domain")
+	httpsCmd.PersistentFlags().StringVarP(&subDomain, "sd", "", "", "sub domain")
+	httpsCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	httpsCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(httpsCmd)
+}
+
+var httpsCmd = &cobra.Command{
+	Use:   "https",
+	Short: "Run frpc with a single https proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.HttpsProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.HttpsProxy
+		cfg.LocalIp = localIp
+		cfg.LocalPort = localPort
+		cfg.CustomDomains = strings.Split(customDomains, ",")
+		cfg.SubDomain = subDomain
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+
+		err = cfg.CheckForCli()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(proxyConfs, nil)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/reload.go

@@ -0,0 +1,99 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+)
+
+func init() {
+	rootCmd.AddCommand(reloadCmd)
+}
+
+var reloadCmd = &cobra.Command{
+	Use:   "reload",
+	Short: "Hot-Reload frpc configuration",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		iniContent, err := config.GetRenderedConfFromFile(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = parseClientCommonCfg(CfgFileTypeIni, iniContent)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = reload()
+		if err != nil {
+			fmt.Printf("frpc reload error: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("reload success\n")
+		return nil
+	},
+}
+
+func reload() error {
+	if g.GlbClientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to use reload feature")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		g.GlbClientCfg.AdminAddr+":"+fmt.Sprintf("%d", g.GlbClientCfg.AdminPort)+"/api/reload", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(g.GlbClientCfg.AdminUser+":"+
+		g.GlbClientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	} else {
+		if resp.StatusCode != 200 {
+			return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		res := &client.GeneralResponse{}
+		err = json.Unmarshal(body, &res)
+		if err != nil {
+			return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+		} else if res.Code != 0 {
+			return fmt.Errorf(res.Msg)
+		}
+	}
+	return nil
+}

cmd/frpc/sub/root.go

@@ -0,0 +1,220 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"os"
+	"os/signal"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/utils/log"
+	"github.com/fatedier/frp/utils/version"
+)
+
+const (
+	CfgFileTypeIni = iota
+	CfgFileTypeCmd
+)
+
+var (
+	cfgFile     string
+	showVersion bool
+
+	serverAddr string
+	user       string
+	protocol   string
+	token      string
+	logLevel   string
+	logFile    string
+	logMaxDays int
+
+	proxyName         string
+	localIp           string
+	localPort         int
+	remotePort        int
+	useEncryption     bool
+	useCompression    bool
+	customDomains     string
+	subDomain         string
+	httpUser          string
+	httpPwd           string
+	locations         string
+	hostHeaderRewrite string
+	role              string
+	sk                string
+	serverName        string
+	bindAddr          string
+	bindPort          int
+
+	kcpDoneCh chan struct{}
+)
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&cfgFile, "", "c", "./frpc.ini", "config file of frpc")
+	rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
+
+	kcpDoneCh = make(chan struct{})
+}
+
+var rootCmd = &cobra.Command{
+	Use:   "frpc",
+	Short: "frpc is the client of frp (https://github.com/fatedier/frp)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if showVersion {
+			fmt.Println(version.Full())
+			return nil
+		}
+
+		// Do not show command usage here.
+		err := runClient(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func handleSignal(svr *client.Service) {
+	ch := make(chan os.Signal)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+	<-ch
+	svr.Close()
+	time.Sleep(250 * time.Millisecond)
+	close(kcpDoneCh)
+}
+
+func parseClientCommonCfg(fileType int, content string) (err error) {
+	if fileType == CfgFileTypeIni {
+		err = parseClientCommonCfgFromIni(content)
+	} else if fileType == CfgFileTypeCmd {
+		err = parseClientCommonCfgFromCmd()
+	}
+	if err != nil {
+		return
+	}
+
+	err = g.GlbClientCfg.ClientCommonConf.Check()
+	if err != nil {
+		return
+	}
+	return
+}
+
+func parseClientCommonCfgFromIni(content string) (err error) {
+	cfg, err := config.UnmarshalClientConfFromIni(&g.GlbClientCfg.ClientCommonConf, content)
+	if err != nil {
+		return err
+	}
+	g.GlbClientCfg.ClientCommonConf = *cfg
+	return
+}
+
+func parseClientCommonCfgFromCmd() (err error) {
+	strs := strings.Split(serverAddr, ":")
+	if len(strs) < 2 {
+		err = fmt.Errorf("invalid server_addr")
+		return
+	}
+	if strs[0] != "" {
+		g.GlbClientCfg.ServerAddr = strs[0]
+	}
+	g.GlbClientCfg.ServerPort, err = strconv.Atoi(strs[1])
+	if err != nil {
+		err = fmt.Errorf("invalid server_addr")
+		return
+	}
+
+	g.GlbClientCfg.User = user
+	g.GlbClientCfg.Protocol = protocol
+	g.GlbClientCfg.Token = token
+	g.GlbClientCfg.LogLevel = logLevel
+	g.GlbClientCfg.LogFile = logFile
+	g.GlbClientCfg.LogMaxDays = int64(logMaxDays)
+	if logFile == "console" {
+		g.GlbClientCfg.LogWay = "console"
+	} else {
+		g.GlbClientCfg.LogWay = "file"
+	}
+	return nil
+}
+
+func runClient(cfgFilePath string) (err error) {
+	var content string
+	content, err = config.GetRenderedConfFromFile(cfgFilePath)
+	if err != nil {
+		return
+	}
+	g.GlbClientCfg.CfgFile = cfgFilePath
+
+	err = parseClientCommonCfg(CfgFileTypeIni, content)
+	if err != nil {
+		return
+	}
+
+	pxyCfgs, visitorCfgs, err := config.LoadAllConfFromIni(g.GlbClientCfg.User, content, g.GlbClientCfg.Start)
+	if err != nil {
+		return err
+	}
+
+	err = startService(pxyCfgs, visitorCfgs)
+	return
+}
+
+func startService(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) (err error) {
+	log.InitLog(g.GlbClientCfg.LogWay, g.GlbClientCfg.LogFile, g.GlbClientCfg.LogLevel, g.GlbClientCfg.LogMaxDays)
+	if g.GlbClientCfg.DnsServer != "" {
+		s := g.GlbClientCfg.DnsServer
+		if !strings.Contains(s, ":") {
+			s += ":53"
+		}
+		// Change default dns server for frpc
+		net.DefaultResolver = &net.Resolver{
+			PreferGo: true,
+			Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
+				return net.Dial("udp", s)
+			},
+		}
+	}
+	svr := client.NewService(pxyCfgs, visitorCfgs)
+
+	// Capture the exit signal if we use kcp.
+	if g.GlbClientCfg.Protocol == "kcp" {
+		go handleSignal(svr)
+	}
+
+	err = svr.Run()
+	if g.GlbClientCfg.Protocol == "kcp" {
+		<-kcpDoneCh
+	}
+	return
+}

cmd/frpc/sub/status.go

@@ -0,0 +1,153 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/rodaine/table"
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+)
+
+func init() {
+	rootCmd.AddCommand(statusCmd)
+}
+
+var statusCmd = &cobra.Command{
+	Use:   "status",
+	Short: "Overview of all proxies status",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		iniContent, err := config.GetRenderedConfFromFile(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = parseClientCommonCfg(CfgFileTypeIni, iniContent)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = status()
+		if err != nil {
+			fmt.Printf("frpc get status error: %v\n", err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func status() error {
+	if g.GlbClientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to get proxy status")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		g.GlbClientCfg.AdminAddr+":"+fmt.Sprintf("%d", g.GlbClientCfg.AdminPort)+"/api/status", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(g.GlbClientCfg.AdminUser+":"+
+		g.GlbClientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	} else {
+		if resp.StatusCode != 200 {
+			return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+		}
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		res := &client.StatusResp{}
+		err = json.Unmarshal(body, &res)
+		if err != nil {
+			return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+		}
+
+		fmt.Println("Proxy Status...")
+		if len(res.Tcp) > 0 {
+			fmt.Printf("TCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Tcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Udp) > 0 {
+			fmt.Printf("UDP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Udp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Http) > 0 {
+			fmt.Printf("HTTP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Http {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Https) > 0 {
+			fmt.Printf("HTTPS")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Https {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Stcp) > 0 {
+			fmt.Printf("STCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Stcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+		if len(res.Xtcp) > 0 {
+			fmt.Printf("XTCP")
+			tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+			for _, ps := range res.Xtcp {
+				tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+			}
+			tbl.Print()
+			fmt.Println("")
+		}
+	}
+	return nil
+}

cmd/frpc/sub/stcp.go

@@ -0,0 +1,113 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	stcpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	stcpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	stcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	stcpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	stcpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	stcpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	stcpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	stcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	stcpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	stcpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	stcpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	stcpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	stcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	stcpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	stcpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	stcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	stcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(stcpCmd)
+}
+
+var stcpCmd = &cobra.Command{
+	Use:   "stcp",
+	Short: "Run frpc with a single stcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		if role == "server" {
+			cfg := &config.StcpProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.StcpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIp = localIp
+			cfg.LocalPort = localPort
+			err = cfg.CheckForCli()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		} else if role == "visitor" {
+			cfg := &config.StcpVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.StcpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Check()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		} else {
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(proxyConfs, visitorConfs)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/tcp.go

@@ -0,0 +1,85 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	tcpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	tcpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	tcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	tcpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	tcpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	tcpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	tcpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	tcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	tcpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	tcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	tcpCmd.PersistentFlags().IntVarP(&remotePort, "remote_port", "r", 0, "remote port")
+	tcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	tcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(tcpCmd)
+}
+
+var tcpCmd = &cobra.Command{
+	Use:   "tcp",
+	Short: "Run frpc with a single tcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.TcpProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.TcpProxy
+		cfg.LocalIp = localIp
+		cfg.LocalPort = localPort
+		cfg.RemotePort = remotePort
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+
+		err = cfg.CheckForCli()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(proxyConfs, nil)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/udp.go

@@ -0,0 +1,85 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	udpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	udpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	udpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	udpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	udpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	udpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	udpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	udpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	udpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	udpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	udpCmd.PersistentFlags().IntVarP(&remotePort, "remote_port", "r", 0, "remote port")
+	udpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	udpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(udpCmd)
+}
+
+var udpCmd = &cobra.Command{
+	Use:   "udp",
+	Short: "Run frpc with a single udp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.UdpProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.UdpProxy
+		cfg.LocalIp = localIp
+		cfg.LocalPort = localPort
+		cfg.RemotePort = remotePort
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+
+		err = cfg.CheckForCli()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(proxyConfs, nil)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/xtcp.go

@@ -0,0 +1,113 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	xtcpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	xtcpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	xtcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	xtcpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	xtcpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	xtcpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	xtcpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+
+	xtcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	xtcpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	xtcpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	xtcpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	xtcpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	xtcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	xtcpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	xtcpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	xtcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	xtcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(xtcpCmd)
+}
+
+var xtcpCmd = &cobra.Command{
+	Use:   "xtcp",
+	Short: "Run frpc with a single xtcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		if role == "server" {
+			cfg := &config.XtcpProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.StcpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIp = localIp
+			cfg.LocalPort = localPort
+			err = cfg.CheckForCli()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		} else if role == "visitor" {
+			cfg := &config.XtcpVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.StcpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Check()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		} else {
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(proxyConfs, visitorConfs)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frps/main.go

@@ -0,0 +1,25 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main // "github.com/fatedier/frp/cmd/frps"
+
+import (
+	"github.com/fatedier/golib/crypto"
+)
+
+func main() {
+	crypto.DefaultSalt = "frp"
+
+	Execute()
+}

cmd/frps/root.go

@@ -0,0 +1,208 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/server"
+	"github.com/fatedier/frp/utils/log"
+	"github.com/fatedier/frp/utils/util"
+	"github.com/fatedier/frp/utils/version"
+)
+
+const (
+	CfgFileTypeIni = iota
+	CfgFileTypeCmd
+)
+
+var (
+	cfgFile     string
+	showVersion bool
+
+	bindAddr          string
+	bindPort          int
+	bindUdpPort       int
+	kcpBindPort       int
+	proxyBindAddr     string
+	vhostHttpPort     int
+	vhostHttpsPort    int
+	vhostHttpTimeout  int64
+	dashboardAddr     string
+	dashboardPort     int
+	dashboardUser     string
+	dashboardPwd      string
+	assetsDir         string
+	logFile           string
+	logLevel          string
+	logMaxDays        int64
+	token             string
+	subDomainHost     string
+	tcpMux            bool
+	allowPorts        string
+	maxPoolCount      int64
+	maxPortsPerClient int64
+)
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&cfgFile, "", "c", "", "config file of frps")
+	rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
+
+	rootCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "0.0.0.0", "bind address")
+	rootCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "p", 7000, "bind port")
+	rootCmd.PersistentFlags().IntVarP(&bindUdpPort, "bind_udp_port", "", 0, "bind udp port")
+	rootCmd.PersistentFlags().IntVarP(&kcpBindPort, "kcp_bind_port", "", 0, "kcp bind udp port")
+	rootCmd.PersistentFlags().StringVarP(&proxyBindAddr, "proxy_bind_addr", "", "0.0.0.0", "proxy bind address")
+	rootCmd.PersistentFlags().IntVarP(&vhostHttpPort, "vhost_http_port", "", 0, "vhost http port")
+	rootCmd.PersistentFlags().IntVarP(&vhostHttpsPort, "vhost_https_port", "", 0, "vhost https port")
+	rootCmd.PersistentFlags().Int64VarP(&vhostHttpTimeout, "vhost_http_timeout", "", 60, "vhost http response header timeout")
+	rootCmd.PersistentFlags().StringVarP(&dashboardAddr, "dashboard_addr", "", "0.0.0.0", "dasboard address")
+	rootCmd.PersistentFlags().IntVarP(&dashboardPort, "dashboard_port", "", 0, "dashboard port")
+	rootCmd.PersistentFlags().StringVarP(&dashboardUser, "dashboard_user", "", "admin", "dashboard user")
+	rootCmd.PersistentFlags().StringVarP(&dashboardPwd, "dashboard_pwd", "", "admin", "dashboard password")
+	rootCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "log file")
+	rootCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	rootCmd.PersistentFlags().Int64VarP(&logMaxDays, "log_max_days", "", 3, "log_max_days")
+	rootCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	rootCmd.PersistentFlags().StringVarP(&subDomainHost, "subdomain_host", "", "", "subdomain host")
+	rootCmd.PersistentFlags().StringVarP(&allowPorts, "allow_ports", "", "", "allow ports")
+	rootCmd.PersistentFlags().Int64VarP(&maxPortsPerClient, "max_ports_per_client", "", 0, "max ports per client")
+}
+
+var rootCmd = &cobra.Command{
+	Use:   "frps",
+	Short: "frps is the server of frp (https://github.com/fatedier/frp)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if showVersion {
+			fmt.Println(version.Full())
+			return nil
+		}
+
+		var err error
+		if cfgFile != "" {
+			var content string
+			content, err = config.GetRenderedConfFromFile(cfgFile)
+			if err != nil {
+				return err
+			}
+			g.GlbServerCfg.CfgFile = cfgFile
+			err = parseServerCommonCfg(CfgFileTypeIni, content)
+		} else {
+			err = parseServerCommonCfg(CfgFileTypeCmd, "")
+		}
+		if err != nil {
+			return err
+		}
+
+		err = runServer()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func parseServerCommonCfg(fileType int, content string) (err error) {
+	if fileType == CfgFileTypeIni {
+		err = parseServerCommonCfgFromIni(content)
+	} else if fileType == CfgFileTypeCmd {
+		err = parseServerCommonCfgFromCmd()
+	}
+	if err != nil {
+		return
+	}
+
+	err = g.GlbServerCfg.ServerCommonConf.Check()
+	if err != nil {
+		return
+	}
+
+	config.InitServerCfg(&g.GlbServerCfg.ServerCommonConf)
+	return
+}
+
+func parseServerCommonCfgFromIni(content string) (err error) {
+	cfg, err := config.UnmarshalServerConfFromIni(&g.GlbServerCfg.ServerCommonConf, content)
+	if err != nil {
+		return err
+	}
+	g.GlbServerCfg.ServerCommonConf = *cfg
+	return
+}
+
+func parseServerCommonCfgFromCmd() (err error) {
+	g.GlbServerCfg.BindAddr = bindAddr
+	g.GlbServerCfg.BindPort = bindPort
+	g.GlbServerCfg.BindUdpPort = bindUdpPort
+	g.GlbServerCfg.KcpBindPort = kcpBindPort
+	g.GlbServerCfg.ProxyBindAddr = proxyBindAddr
+	g.GlbServerCfg.VhostHttpPort = vhostHttpPort
+	g.GlbServerCfg.VhostHttpsPort = vhostHttpsPort
+	g.GlbServerCfg.VhostHttpTimeout = vhostHttpTimeout
+	g.GlbServerCfg.DashboardAddr = dashboardAddr
+	g.GlbServerCfg.DashboardPort = dashboardPort
+	g.GlbServerCfg.DashboardUser = dashboardUser
+	g.GlbServerCfg.DashboardPwd = dashboardPwd
+	g.GlbServerCfg.LogFile = logFile
+	g.GlbServerCfg.LogLevel = logLevel
+	g.GlbServerCfg.LogMaxDays = logMaxDays
+	g.GlbServerCfg.Token = token
+	g.GlbServerCfg.SubDomainHost = subDomainHost
+	if len(allowPorts) > 0 {
+		// e.g. 1000-2000,2001,2002,3000-4000
+		ports, errRet := util.ParseRangeNumbers(allowPorts)
+		if errRet != nil {
+			err = fmt.Errorf("Parse conf error: allow_ports: %v", errRet)
+			return
+		}
+
+		for _, port := range ports {
+			g.GlbServerCfg.AllowPorts[int(port)] = struct{}{}
+		}
+	}
+	g.GlbServerCfg.MaxPortsPerClient = maxPortsPerClient
+
+	if logFile == "console" {
+		g.GlbClientCfg.LogWay = "console"
+	} else {
+		g.GlbClientCfg.LogWay = "file"
+	}
+	return
+}
+
+func runServer() (err error) {
+	log.InitLog(g.GlbServerCfg.LogWay, g.GlbServerCfg.LogFile, g.GlbServerCfg.LogLevel,
+		g.GlbServerCfg.LogMaxDays)
+	svr, err := server.NewService()
+	if err != nil {
+		return err
+	}
+	log.Info("Start frps success")
+	server.ServerService = svr
+	svr.Run()
+	return
+}

conf/frpc.ini

@@ -1,60 +1,9 @@
-# [common] is integral section
 [common]
-# A literal address or host name for IPv6 must be enclosed
-# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
-server_addr = 0.0.0.0
+server_addr = 127.0.0.1
 server_port = 7000
-# console or real logFile path like ./frpc.log
-log_file = ./frpc.log
-# debug, info, warn, error
-log_level = info
-log_max_days = 3
-# for authentication
-auth_token = 123
-# for privilege mode
-privilege_token = 12345678
 
-# ssh is the proxy name same as server's configuration
 [ssh]
-# tcp | http, default is tcp
 type = tcp
 local_ip = 127.0.0.1
 local_port = 22
-# true or false, if true, messages between frps and frpc will be encrypted, default is false
-use_encryption = true
-# default is false
-use_gzip = false
-# connections will be established in advance, default value is zero
-pool_count = 10
-
-# Resolve your domain names to [server_addr] so you can use http://web01.yourdomain.com to browse web01 and http://web02.yourdomain.com to browse web02, the domains are set in frps.ini
-[web01]
-type = http
-local_ip = 127.0.0.1
-local_port = 80
-use_gzip = true
-pool_count = 20
-
-[web02]
-type = http
-local_ip = 127.0.0.1
-local_port = 8000
-
-[privilege_ssh]
-# if privilege_mode is enabled, this proxy will be created automatically
-privilege_mode = true
-type = tcp
-local_ip = 127.0.0.1
-local_port = 22
-use_encryption = true
-use_gzip = false
-remote_port = 6001
-
-[privilege_web]
-privilege_mode = true
-type = http
-local_ip = 127.0.0.1
-local_port = 80
-use_gzip = true
-custom_domains = web03.yourdomain.com
-host_header_rewrite = example.com
+remote_port = 6000

conf/frpc_full.ini

@@ -0,0 +1,228 @@
+# [common] is integral section
+[common]
+# A literal address or host name for IPv6 must be enclosed
+# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
+server_addr = 0.0.0.0
+server_port = 7000
+
+# if you want to connect frps by http proxy or socks5 proxy, you can set http_proxy here or in global environment variables
+# it only works when protocol is tcp
+# http_proxy = http://user:passwd@192.168.1.128:8080
+# http_proxy = socks5://user:passwd@192.168.1.128:1080
+
+# console or real logFile path like ./frpc.log
+log_file = ./frpc.log
+
+# trace, debug, info, warn, error
+log_level = info
+
+log_max_days = 3
+
+# for authentication
+token = 12345678
+
+# set admin address for control frpc's action by http api such as reload
+admin_addr = 127.0.0.1
+admin_port = 7400
+admin_user = admin
+admin_pwd = admin
+
+# connections will be established in advance, default value is zero
+pool_count = 5
+
+# if tcp stream multiplexing is used, default is true, it must be same with frps
+tcp_mux = true
+
+# your proxy name will be changed to {user}.{proxy}
+user = your_name
+
+# decide if exit program when first login failed, otherwise continuous relogin to frps
+# default is true
+login_fail_exit = true
+
+# communication protocol used to connect to server
+# now it supports tcp and kcp and websocket, default is tcp
+protocol = tcp
+
+# specify a dns server, so frpc will use this instead of default one
+# dns_server = 8.8.8.8
+
+# proxy names you want to start divided by ','
+# default is empty, means all proxies
+# start = ssh,dns
+
+# heartbeat configure, it's not recommended to modify the default value
+# the default value of heartbeat_interval is 10 and heartbeat_timeout is 90
+# heartbeat_interval = 30
+# heartbeat_timeout = 90
+
+# 'ssh' is the unique proxy name
+# if user in [common] section is not empty, it will be changed to {user}.{proxy} such as 'your_name.ssh'
+[ssh]
+# tcp | udp | http | https | stcp | xtcp, default is tcp
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+# true or false, if true, messages between frps and frpc will be encrypted, default is false
+use_encryption = false
+# if true, message will be compressed
+use_compression = false
+# remote port listen by frps
+remote_port = 6001
+# frps will load balancing connections for proxies in same group
+group = test_group
+# group should have same group key
+group_key = 123456
+# enable health check for the backend service, it support 'tcp' and 'http' now
+# frpc will connect local service's port to detect it's healthy status
+health_check_type = tcp
+# health check connection timeout
+health_check_timeout_s = 3
+# if continuous failed in 3 times, the proxy will be removed from frps
+health_check_max_failed = 3
+# every 10 seconds will do a health check
+health_check_interval_s = 10
+
+[ssh_random]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+# if remote_port is 0, frps will assign a random port for you
+remote_port = 0
+
+# if you want to expose multiple ports, add 'range:' prefix to the section name
+# frpc will generate multiple proxies such as 'tcp_port_6010', 'tcp_port_6011' and so on.
+[range:tcp_port]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 6010-6020,6022,6024-6028
+remote_port = 6010-6020,6022,6024-6028
+use_encryption = false
+use_compression = false
+
+[dns]
+type = udp
+local_ip = 114.114.114.114
+local_port = 53
+remote_port = 6002
+use_encryption = false
+use_compression = false
+
+[range:udp_port]
+type = udp
+local_ip = 127.0.0.1
+local_port = 6010-6020
+remote_port = 6010-6020
+use_encryption = false
+use_compression = false
+
+# Resolve your domain names to [server_addr] so you can use http://web01.yourdomain.com to browse web01 and http://web02.yourdomain.com to browse web02
+[web01]
+type = http
+local_ip = 127.0.0.1
+local_port = 80
+use_encryption = false
+use_compression = true
+# http username and password are safety certification for http protocol
+# if not set, you can access this custom_domains without certification
+http_user = admin
+http_pwd = admin
+# if domain for frps is frps.com, then you can access [web01] proxy by URL http://test.frps.com
+subdomain = web01
+custom_domains = web02.yourdomain.com
+# locations is only available for http type
+locations = /,/pic
+host_header_rewrite = example.com
+# params with prefix "header_" will be used to update http request headers
+header_X-From-Where = frp
+health_check_type = http
+# frpc will send a GET http request '/status' to local http service
+# http service is alive when it return 2xx http response code
+health_check_url = /status
+health_check_interval_s = 10
+health_check_max_failed = 3
+health_check_timeout_s = 3
+
+[web02]
+type = https
+local_ip = 127.0.0.1
+local_port = 8000
+use_encryption = false
+use_compression = false
+subdomain = web01
+custom_domains = web02.yourdomain.com
+
+[plugin_unix_domain_socket]
+type = tcp
+remote_port = 6003
+# if plugin is defined, local_ip and local_port is useless
+# plugin will handle connections got from frps
+plugin = unix_domain_socket
+# params with prefix "plugin_" that plugin needed
+plugin_unix_path = /var/run/docker.sock
+
+[plugin_http_proxy]
+type = tcp
+remote_port = 6004
+plugin = http_proxy
+plugin_http_user = abc
+plugin_http_passwd = abc
+
+[plugin_socks5]
+type = tcp
+remote_port = 6005
+plugin = socks5
+plugin_user = abc
+plugin_passwd = abc
+
+[plugin_static_file]
+type = tcp
+remote_port = 6006
+plugin = static_file
+plugin_local_path = /var/www/blog
+plugin_strip_prefix = static
+plugin_http_user = abc
+plugin_http_passwd = abc
+
+[secret_tcp]
+# If the type is secret tcp, remote_port is useless
+# Who want to connect local port should deploy another frpc with stcp proxy and role is visitor
+type = stcp
+# sk used for authentication for visitors
+sk = abcdefg
+local_ip = 127.0.0.1
+local_port = 22
+use_encryption = false
+use_compression = false
+
+# user of frpc should be same in both stcp server and stcp visitor
+[secret_tcp_visitor]
+# frpc role visitor -> frps -> frpc role server
+role = visitor
+type = stcp
+# the server name you want to visitor
+server_name = secret_tcp
+sk = abcdefg
+# connect this address to visitor stcp server
+bind_addr = 127.0.0.1
+bind_port = 9000
+use_encryption = false
+use_compression = false
+
+[p2p_tcp]
+type = xtcp
+sk = abcdefg
+local_ip = 127.0.0.1
+local_port = 22
+use_encryption = false
+use_compression = false
+
+[p2p_tcp_visitor]
+role = visitor
+type = xtcp
+server_name = p2p_tcp
+sk = abcdefg
+bind_addr = 127.0.0.1
+bind_port = 9001
+use_encryption = false
+use_compression = false

conf/frps.ini

@@ -1,45 +1,2 @@
-# [common] is integral section
 [common]
-# A literal address or host name for IPv6 must be enclosed
-# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
-bind_addr = 0.0.0.0
 bind_port = 7000
-# if you want to support virtual host, you must set the http port for listening (optional)
-vhost_http_port = 80
-vhost_https_port = 443
-# if you want to configure or reload frps by dashboard, dashboard_port must be set
-dashboard_port = 7500
-# dashboard assets directory(only for debug mode)
-# assets_dir = ./static
-# console or real logFile path like ./frps.log
-log_file = ./frps.log
-# debug, info, warn, error
-log_level = info
-log_max_days = 3
-# if you enable privilege mode, frpc can create a proxy without pre-configure in frps when privilege_token is correct
-privilege_mode = true
-privilege_token = 12345678
-# only allow frpc to bind ports you list, if you set nothing, there won't be any limit
-privilege_allow_ports = 2000-3000,3001,3003,4000-50000
-# pool_count in each proxy will change to max_pool_count if they exceed the maximum value
-max_pool_count = 100
-
-# ssh is the proxy name, client will use this name and auth_token to connect to server
-[ssh]
-type = tcp
-auth_token = 123
-bind_addr = 0.0.0.0
-listen_port = 6000
-
-[web01]
-# if type equals http, vhost_http_port must be set
-type = http
-auth_token = 123
-# if proxy type equals http, custom_domains must be set separated by commas
-custom_domains = web01.yourdomain.com,web01.yourdomain2.com
-
-[web02]
-# if type equals https, vhost_https_port must be set
-type = https
-auth_token = 123
-custom_domains = web02.yourdomain.com

conf/frps_full.ini

@@ -0,0 +1,67 @@
+# [common] is integral section
+[common]
+# A literal address or host name for IPv6 must be enclosed
+# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
+bind_addr = 0.0.0.0
+bind_port = 7000
+
+# udp port to help make udp hole to penetrate nat
+bind_udp_port = 7001
+
+# udp port used for kcp protocol, it can be same with 'bind_port'
+# if not set, kcp is disabled in frps
+kcp_bind_port = 7000
+
+# specify which address proxy will listen for, default value is same with bind_addr
+# proxy_bind_addr = 127.0.0.1
+
+# if you want to support virtual host, you must set the http port for listening (optional)
+# Note: http port and https port can be same with bind_port
+vhost_http_port = 80
+vhost_https_port = 443
+
+# response header timeout(seconds) for vhost http server, default is 60s
+# vhost_http_timeout = 60
+
+# set dashboard_addr and dashboard_port to view dashboard of frps
+# dashboard_addr's default value is same with bind_addr
+# dashboard is available only if dashboard_port is set
+dashboard_addr = 0.0.0.0
+dashboard_port = 7500
+
+# dashboard user and passwd for basic auth protect, if not set, both default value is admin
+dashboard_user = admin
+dashboard_pwd = admin
+
+# dashboard assets directory(only for debug mode)
+# assets_dir = ./static
+# console or real logFile path like ./frps.log
+log_file = ./frps.log
+
+# trace, debug, info, warn, error
+log_level = info
+
+log_max_days = 3
+
+# auth token
+token = 12345678
+
+# heartbeat configure, it's not recommended to modify the default value
+# the default value of heartbeat_timeout is 90
+# heartbeat_timeout = 90
+
+# only allow frpc to bind ports you list, if you set nothing, there won't be any limit
+allow_ports = 2000-3000,3001,3003,4000-50000
+
+# pool_count in each proxy will change to max_pool_count if they exceed the maximum value
+max_pool_count = 5
+
+# max ports can be used for each client, default value is 0 means no limit
+max_ports_per_client = 0
+
+# if subdomain_host is not empty, you can set subdomain when type is http or https in frpc's configure file
+# when subdomain is test, the host used by routing is test.frps.com
+subdomain_host = frps.com
+
+# if tcp stream multiplexing is used, default is true
+tcp_mux = true

doc/quick_start_en.md

@@ -1,135 +0,0 @@
-# Quick Start
-
-frp is easier to use compared with other similar projects.
-
-We will use two simple demo to demonstrate how to use frp.
-
-1. How to create a connection to **server A**'s **ssh port** by **server B** with **public IP address** x.x.x.x(replace to the real IP address of your server).
-2. How to visit web service in **server A**'s **8000 port** and **8001 port** by **web01.yourdomain.com** and **web02.yourdomain.com** through **server B** with public ID address.
-
-### Download SourceCode
-
-`go get github.com/fatedier/frp` is recommended, then the code will be copied to the directory `$GOPATH/src/github.com/fatedier/frp`.
-
-Or you can use `git clone https://github.com/fatedier/frp.git $GOPATH/src/github.com/fatedier/frp`.
-
-If you want to try it quickly, download the compiled program and configuration files from [https://github.com/fatedier/frp/releases](https://github.com/fatedier/frp/releases).
-
-### Compile
-
-Enter the root directory and execute `make`, then wait until finished.
-
-**bin** include all executable programs when **conf** include corresponding configuration files.
-
-### Pre-requirement
-
-* Go environment. Version of go >= 1.4.
-* Godep (if not exist, `go get` will be executed to download godep when compiling)
-
-### Deploy
-
-1. Move `./bin/frps` and `./conf/frps.ini` to any directory of **server B**.
-2. Move `./bin/frpc` and `./conf/frpc.ini` to any directory of **server A**.
-3. Modify all configuration files, details in next paragraph.
-4. Execute `nohup ./frps &` or `nohup ./frps -c ./frps.ini &` in **server B**.
-5. Execute `nohup ./frpc &` or `nohup ./frpc -c ./frpc.ini &` in **server A**.
-6. Use `ssh -oPort=6000 {user}@x.x.x.x` to test if frp is work(replace {user} to real username in **server A**), or visit custom domains by browser.
-
-## Tcp port forwarding
-
-### Configuration files
-
-#### frps.ini
-
-```ini
-[common]
-bind_addr = 0.0.0.0
-# for accept connections from frpc
-bind_port = 7000
-log_file = ./frps.log
-log_level = info
-
-# ssh is the custom name of proxy and there can be many proxies with unique name in one configure file
-[ssh]
-auth_token = 123
-bind_addr = 0.0.0.0
-# finally we connect to server A by this port
-listen_port = 6000
-```
-
-#### frpc.ini
-
-```ini
-[common]
-# server address of frps
-server_addr = x.x.x.x
-server_port = 7000
-log_file = ./frpc.log
-log_level = info
-# for authentication
-auth_token = 123
-
-# ssh is proxy name same with configure in frps.ini
-[ssh]
-# local port which need to be transferred
-local_port = 22
-# if use_encryption equals true, messages between frpc and frps will be encrypted, default is false
-use_encryption = true
-```
-
-## Http port forwarding and Custom domains binding
-
-If you only want to forward port one by one, you just need refer to [Tcp port forwarding](/doc/quick_start_en.md#Tcp-port-forwarding).If you want to visit different web pages deployed in different web servers by **server B**'s **80 port**, you should specify the type as **http**.
-
-You also need to resolve your **A record** of your custom domain to [server_addr], or resolve your **CNAME record** to [server_addr] if [server_addr] is a domain.
-
-After that, you can visit your web pages in local server by custom domains.
-
-### Configuration files
-
-#### frps.ini
-
-```ini
-[common]
-bind_addr = 0.0.0.0
-bind_port = 7000
-# if you want to support vhost, specify one port for http services
-vhost_http_port = 80
-log_file = ./frps.log
-log_level = info
-
-[web01]
-type = http
-auth_token = 123
-# # if proxy type equals http, custom_domains must be set separated by commas
-custom_domains = web01.yourdomain.com
-
-[web02]
-type = http
-auth_token = 123
-custom_domains = web02.yourdomain.com
-```
-
-#### frpc.ini
-
-```ini
-[common]
-server_addr = x.x.x.x
-server_port = 7000
-log_file = ./frpc.log
-log_level = info
-auth_token = 123 
-
-# custom domains are set in frps.ini
-[web01]
-type = http
-local_ip = 127.0.0.1
-local_port = 8000
-# encryption is optional, default is false
-use_encryption = true
-
-[web02]
-type = http
-local_ip = 127.0.0.1
-local_port = 8001
-```

doc/quick_start_zh.md

@@ -1,137 +0,0 @@
-# frp 使用文档
-
-相比于其他项目而言 frp 更易于部署和使用，这里我们用两个简单的示例来演示 frp 的使用过程。
-
-1. 如何通过一台拥有公网IP地址的**服务器B**，访问处于公司内部网络环境中的**服务器A**的**ssh**端口，**服务器B**的IP地址为 x.x.x.x（测试时替换为真实的IP地址）。
-2. 如何利用一台拥有公网IP地址的**服务器B**，使通过 **web01.yourdomain.com** 可以访问内网环境中**服务器A**上**8000端口**的web服务，**web02.yourdomain.com** 可以访问**服务器A**上**8001端口**的web服务。
-
-### 下载源码
-
-推荐直接使用 `go get github.com/fatedier/frp` 下载源代码安装，执行命令后代码将会拷贝到 `$GOPATH/src/github.com/fatedier/frp` 目录下。
-
-或者可以使用 `git clone https://github.com/fatedier/frp.git $GOPATH/src/github.com/fatedier/frp` 拷贝到相应目录下。
-
-如果您想快速进行测试，也可以根据您服务器的操作系统及架构直接下载编译好的程序及示例配置文件，[https://github.com/fatedier/frp/releases](https://github.com/fatedier/frp/releases)。
-
-### 编译
-
-进入下载后的源码根目录，执行 `make` 命令，等待编译完成。
-
-编译完成后， **bin** 目录下是编译好的可执行文件，**conf** 目录下是示例配置文件。
-
-### 依赖
-
-* go 1.4 以上版本
-* godep （如果检查不存在，编译时会通过 `go get` 命令安装）
-
-### 部署
-
-1. 将 ./bin/frps 和 ./conf/frps.ini 拷贝至**服务器B**任意目录。
-2. 将 ./bin/frpc 和 ./conf/frpc.ini 拷贝至**服务器A**任意目录。
-3. 根据要实现的功能修改两边的配置文件，详细内容见后续章节说明。
-4. 在服务器B执行 `nohup ./frps &` 或者 `nohup ./frps -c ./frps.ini &`。
-5. 在服务器A执行 `nohup ./frpc &` 或者 `nohup ./frpc -c ./frpc.ini &`。
-6. 通过 `ssh -oPort=6000 {user}@x.x.x.x` 测试是否能够成功连接**服务器A**（{user}替换为**服务器A**上存在的真实用户），或通过浏览器访问自定义域名验证 http 服务是否转发成功。
-
-## tcp 端口转发
-
-转发 tcp 端口需要按照需求修改 frps 和 frpc 的配置文件。
-
-### 配置文件
-
-#### frps.ini
-
-```ini
-[common]
-bind_addr = 0.0.0.0
-# 用于接收 frpc 连接的端口
-bind_port = 7000
-log_file = ./frps.log
-log_level = info
-
-# ssh 为代理的自定义名称，可以有多个，不能重复，和frpc中名称对应
-[ssh]
-auth_token = 123 
-bind_addr = 0.0.0.0
-# 最后将通过此端口访问后端服务
-listen_port = 6000
-```
-
-#### frpc.ini
-
-```ini
-[common]
-# frps 所在服务器绑定的IP地址
-server_addr = x.x.x.x
-server_port = 7000
-log_file = ./frpc.log
-log_level = info
-# 用于身份验证
-auth_token = 123 
-
-# ssh 需要和 frps.ini 中配置一致
-[ssh]
-# 需要转发的本地端口
-local_port = 22
-# 启用加密，frpc与frps之间通信加密，默认为 false
-use_encryption = true
-```
-
-## http 端口转发，自定义域名绑定
-
-如果只需要一对一的转发，例如**服务器B**的**80端口**转发**服务器A**的**8000端口**，则只需要配置 [tcp 端口转发](/doc/quick_start_zh.md#tcp-端口转发) 即可，如果需要使**服务器B**的**80端口**可以转发至**多个**web服务端口，则需要指定代理的类型为 http，并且在 frps 的配置文件中配置用于提供 http 转发服务的端口。
-
-按照如下的内容修改配置文件后，需要将自定义域名的 **A 记录**解析到 [server_addr]，如果 [server_addr] 是域名也可以将自定义域名的 **CNAME 记录**解析到 [server_addr]。
-
-之后就可以通过自定义域名访问到本地的多个 web 服务。
-
-### 配置文件
-
-#### frps.ini
-
-```ini
-[common]
-bind_addr = 0.0.0.0
-bind_port = 7000
-# 如果需要支持http类型的代理则需要指定一个端口
-vhost_http_port = 80
-log_file = ./frps.log
-log_level = info
-
-[web01]
-# type 默认为 tcp，这里需要特别指定为 http
-type = http
-auth_token = 123
-# 自定义域名绑定，如果需要同时绑定多个以英文逗号分隔
-custom_domains = web01.yourdomain.com
-
-[web02]
-type = http
-auth_token = 123
-custom_domains = web02.yourdomain.com
-```
-
-#### frpc.ini
-
-```ini
-[common]
-server_addr = x.x.x.x
-server_port = 7000
-log_file = ./frpc.log
-log_level = info
-auth_token = 123 
-
-
-# 自定义域名在 frps.ini 中配置，方便做统一管理
-[web01]
-type = http
-local_ip = 127.0.0.1
-local_port = 8000
-# 可选是否加密
-use_encryption = true
-
-[web02]
-type = http
-local_ip = 127.0.0.1
-local_port = 8001
-```

g/g.go

@@ -0,0 +1,32 @@
+package g
+
+import (
+	"github.com/fatedier/frp/models/config"
+)
+
+var (
+	GlbClientCfg *ClientCfg
+	GlbServerCfg *ServerCfg
+)
+
+func init() {
+	GlbClientCfg = &ClientCfg{
+		ClientCommonConf: *config.GetDefaultClientConf(),
+	}
+	GlbServerCfg = &ServerCfg{
+		ServerCommonConf: *config.GetDefaultServerConf(),
+	}
+}
+
+type ClientCfg struct {
+	config.ClientCommonConf
+
+	CfgFile       string
+	ServerUdpPort int // this is configured by login response from frps
+}
+
+type ServerCfg struct {
+	config.ServerCommonConf
+
+	CfgFile string
+}

go.mod

@@ -0,0 +1,32 @@
+module github.com/fatedier/frp
+
+go 1.12
+
+require (
+	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
+	github.com/davecgh/go-spew v1.1.0 // indirect
+	github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb
+	github.com/fatedier/golib v0.0.0-20181107124048-ff8cd814b049
+	github.com/fatedier/kcp-go v0.0.0-20171023144637-cd167d2f15f4
+	github.com/golang/snappy v0.0.0-20170215233205-553a64147049 // indirect
+	github.com/gorilla/context v1.1.1 // indirect
+	github.com/gorilla/mux v1.6.2
+	github.com/gorilla/websocket v1.2.0
+	github.com/hashicorp/yamux v0.0.0-20180314200745-2658be15c5f0
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/mattn/go-runewidth v0.0.4 // indirect
+	github.com/pkg/errors v0.8.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rakyll/statik v0.1.1
+	github.com/rodaine/table v1.0.0
+	github.com/spf13/cobra v0.0.3
+	github.com/spf13/pflag v1.0.1 // indirect
+	github.com/stretchr/testify v1.2.1
+	github.com/templexxx/cpufeat v0.0.0-20170927014610-3794dfbfb047 // indirect
+	github.com/templexxx/reedsolomon v0.0.0-20170926020725-5e06b81a1c76 // indirect
+	github.com/templexxx/xor v0.0.0-20170926022130-0af8e873c554 // indirect
+	github.com/tjfoc/gmsm v0.0.0-20171124023159-98aa888b79d8 // indirect
+	github.com/vaughan0/go-ini v0.0.0-20130923145212-a98ad7ee00ec
+	golang.org/x/crypto v0.0.0-20180505025534-4ec37c66abab // indirect
+	golang.org/x/net v0.0.0-20180524181706-dfa909b99c79
+)

go.sum

@@ -0,0 +1,30 @@
+github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb/go.mod h1:wx3gB6dbIfBRcucp94PI9Bt3I0F2c/MyNEWuhzpWiwk=
+github.com/fatedier/golib v0.0.0-20181107124048-ff8cd814b049 h1:teH578mf2ii42NHhIp3PhgvjU5bv+NFMq9fSQR8NaG8=
+github.com/fatedier/golib v0.0.0-20181107124048-ff8cd814b049/go.mod h1:DqIrnl0rp3Zybg9zbJmozTy1n8fYJoX+QoAj9slIkKM=
+github.com/fatedier/kcp-go v0.0.0-20171023144637-cd167d2f15f4/go.mod h1:YpCOaxj7vvMThhIQ9AfTOPW2sfztQR5WDfs7AflSy4s=
+github.com/golang/snappy v0.0.0-20170215233205-553a64147049/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
+github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
+github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
+github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/hashicorp/yamux v0.0.0-20180314200745-2658be15c5f0/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
+github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
+github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rakyll/statik v0.1.1/go.mod h1:OEi9wJV/fMUAGx1eNjq75DKDsJVuEv1U0oYdX6GX8Zs=
+github.com/rodaine/table v1.0.0/go.mod h1:YAUzwPOji0DUJNEvggdxyQcUAl4g3hDRcFlyjnnR51I=
+github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
+github.com/spf13/pflag v1.0.1/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+github.com/stretchr/testify v1.2.1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/templexxx/cpufeat v0.0.0-20170927014610-3794dfbfb047/go.mod h1:wM7WEvslTq+iOEAMDLSzhVuOt5BRZ05WirO+b09GHQU=
+github.com/templexxx/reedsolomon v0.0.0-20170926020725-5e06b81a1c76/go.mod h1:ToWcj2sZ6xHl14JjZiVDktYpFtrFZJXBlsu7TV23lNg=
+github.com/templexxx/xor v0.0.0-20170926022130-0af8e873c554/go.mod h1:5XA7W9S6mni3h5uvOC75dA3m9CCCaS83lltmc0ukdi4=
+github.com/tjfoc/gmsm v0.0.0-20171124023159-98aa888b79d8/go.mod h1:XxO4hdhhrzAd+G4CjDqaOkd0hUzmtPR/d3EiBBMn/wc=
+github.com/vaughan0/go-ini v0.0.0-20130923145212-a98ad7ee00ec/go.mod h1:owBmyHYMLkxyrugmfwE/DLJyW8Ro9mkphwuVErQ0iUw=
+golang.org/x/crypto v0.0.0-20180505025534-4ec37c66abab/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/net v0.0.0-20180524181706-dfa909b99c79/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=

models/config/client_common.go

@@ -0,0 +1,228 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	ini "github.com/vaughan0/go-ini"
+)
+
+// client common config
+type ClientCommonConf struct {
+	ServerAddr        string              `json:"server_addr"`
+	ServerPort        int                 `json:"server_port"`
+	HttpProxy         string              `json:"http_proxy"`
+	LogFile           string              `json:"log_file"`
+	LogWay            string              `json:"log_way"`
+	LogLevel          string              `json:"log_level"`
+	LogMaxDays        int64               `json:"log_max_days"`
+	Token             string              `json:"token"`
+	AdminAddr         string              `json:"admin_addr"`
+	AdminPort         int                 `json:"admin_port"`
+	AdminUser         string              `json:"admin_user"`
+	AdminPwd          string              `json:"admin_pwd"`
+	PoolCount         int                 `json:"pool_count"`
+	TcpMux            bool                `json:"tcp_mux"`
+	User              string              `json:"user"`
+	DnsServer         string              `json:"dns_server"`
+	LoginFailExit     bool                `json:"login_fail_exit"`
+	Start             map[string]struct{} `json:"start"`
+	Protocol          string              `json:"protocol"`
+	HeartBeatInterval int64               `json:"heartbeat_interval"`
+	HeartBeatTimeout  int64               `json:"heartbeat_timeout"`
+}
+
+func GetDefaultClientConf() *ClientCommonConf {
+	return &ClientCommonConf{
+		ServerAddr:        "0.0.0.0",
+		ServerPort:        7000,
+		HttpProxy:         os.Getenv("http_proxy"),
+		LogFile:           "console",
+		LogWay:            "console",
+		LogLevel:          "info",
+		LogMaxDays:        3,
+		Token:             "",
+		AdminAddr:         "127.0.0.1",
+		AdminPort:         0,
+		AdminUser:         "",
+		AdminPwd:          "",
+		PoolCount:         1,
+		TcpMux:            true,
+		User:              "",
+		DnsServer:         "",
+		LoginFailExit:     true,
+		Start:             make(map[string]struct{}),
+		Protocol:          "tcp",
+		HeartBeatInterval: 30,
+		HeartBeatTimeout:  90,
+	}
+}
+
+func UnmarshalClientConfFromIni(defaultCfg *ClientCommonConf, content string) (cfg *ClientCommonConf, err error) {
+	cfg = defaultCfg
+	if cfg == nil {
+		cfg = GetDefaultClientConf()
+	}
+
+	conf, err := ini.Load(strings.NewReader(content))
+	if err != nil {
+		err = fmt.Errorf("parse ini conf file error: %v", err)
+		return nil, err
+	}
+
+	var (
+		tmpStr string
+		ok     bool
+		v      int64
+	)
+	if tmpStr, ok = conf.Get("common", "server_addr"); ok {
+		cfg.ServerAddr = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "server_port"); ok {
+		v, err = strconv.ParseInt(tmpStr, 10, 64)
+		if err != nil {
+			err = fmt.Errorf("Parse conf error: invalid server_port")
+			return
+		}
+		cfg.ServerPort = int(v)
+	}
+
+	if tmpStr, ok = conf.Get("common", "http_proxy"); ok {
+		cfg.HttpProxy = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_file"); ok {
+		cfg.LogFile = tmpStr
+		if cfg.LogFile == "console" {
+			cfg.LogWay = "console"
+		} else {
+			cfg.LogWay = "file"
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_level"); ok {
+		cfg.LogLevel = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_max_days"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err == nil {
+			cfg.LogMaxDays = v
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "token"); ok {
+		cfg.Token = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "admin_addr"); ok {
+		cfg.AdminAddr = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "admin_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err == nil {
+			cfg.AdminPort = int(v)
+		} else {
+			err = fmt.Errorf("Parse conf error: invalid admin_port")
+			return
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "admin_user"); ok {
+		cfg.AdminUser = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "admin_pwd"); ok {
+		cfg.AdminPwd = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "pool_count"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err == nil {
+			cfg.PoolCount = int(v)
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "tcp_mux"); ok && tmpStr == "false" {
+		cfg.TcpMux = false
+	} else {
+		cfg.TcpMux = true
+	}
+
+	if tmpStr, ok = conf.Get("common", "user"); ok {
+		cfg.User = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "dns_server"); ok {
+		cfg.DnsServer = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "start"); ok {
+		proxyNames := strings.Split(tmpStr, ",")
+		for _, name := range proxyNames {
+			cfg.Start[strings.TrimSpace(name)] = struct{}{}
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "login_fail_exit"); ok && tmpStr == "false" {
+		cfg.LoginFailExit = false
+	} else {
+		cfg.LoginFailExit = true
+	}
+
+	if tmpStr, ok = conf.Get("common", "protocol"); ok {
+		// Now it only support tcp and kcp and websocket.
+		if tmpStr != "tcp" && tmpStr != "kcp" && tmpStr != "websocket" {
+			err = fmt.Errorf("Parse conf error: invalid protocol")
+			return
+		}
+		cfg.Protocol = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "heartbeat_timeout"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid heartbeat_timeout")
+			return
+		} else {
+			cfg.HeartBeatTimeout = v
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "heartbeat_interval"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid heartbeat_interval")
+			return
+		} else {
+			cfg.HeartBeatInterval = v
+		}
+	}
+	return
+}
+
+func (cfg *ClientCommonConf) Check() (err error) {
+	if cfg.HeartBeatInterval <= 0 {
+		err = fmt.Errorf("Parse conf error: invalid heartbeat_interval")
+		return
+	}
+
+	if cfg.HeartBeatTimeout < cfg.HeartBeatInterval {
+		err = fmt.Errorf("Parse conf error: invalid heartbeat_timeout, heartbeat_timeout is less than heartbeat_interval")
+		return
+	}
+	return
+}

models/config/proxy.go

@@ -0,0 +1,964 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+
+	"github.com/fatedier/frp/models/consts"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/util"
+
+	ini "github.com/vaughan0/go-ini"
+)
+
+var (
+	proxyConfTypeMap map[string]reflect.Type
+)
+
+func init() {
+	proxyConfTypeMap = make(map[string]reflect.Type)
+	proxyConfTypeMap[consts.TcpProxy] = reflect.TypeOf(TcpProxyConf{})
+	proxyConfTypeMap[consts.UdpProxy] = reflect.TypeOf(UdpProxyConf{})
+	proxyConfTypeMap[consts.HttpProxy] = reflect.TypeOf(HttpProxyConf{})
+	proxyConfTypeMap[consts.HttpsProxy] = reflect.TypeOf(HttpsProxyConf{})
+	proxyConfTypeMap[consts.StcpProxy] = reflect.TypeOf(StcpProxyConf{})
+	proxyConfTypeMap[consts.XtcpProxy] = reflect.TypeOf(XtcpProxyConf{})
+}
+
+// NewConfByType creates a empty ProxyConf object by proxyType.
+// If proxyType isn't exist, return nil.
+func NewConfByType(proxyType string) ProxyConf {
+	v, ok := proxyConfTypeMap[proxyType]
+	if !ok {
+		return nil
+	}
+	cfg := reflect.New(v).Interface().(ProxyConf)
+	return cfg
+}
+
+type ProxyConf interface {
+	GetBaseInfo() *BaseProxyConf
+	UnmarshalFromMsg(pMsg *msg.NewProxy)
+	UnmarshalFromIni(prefix string, name string, conf ini.Section) error
+	MarshalToMsg(pMsg *msg.NewProxy)
+	CheckForCli() error
+	CheckForSvr() error
+	Compare(conf ProxyConf) bool
+}
+
+func NewProxyConfFromMsg(pMsg *msg.NewProxy) (cfg ProxyConf, err error) {
+	if pMsg.ProxyType == "" {
+		pMsg.ProxyType = consts.TcpProxy
+	}
+
+	cfg = NewConfByType(pMsg.ProxyType)
+	if cfg == nil {
+		err = fmt.Errorf("proxy [%s] type [%s] error", pMsg.ProxyName, pMsg.ProxyType)
+		return
+	}
+	cfg.UnmarshalFromMsg(pMsg)
+	err = cfg.CheckForSvr()
+	return
+}
+
+func NewProxyConfFromIni(prefix string, name string, section ini.Section) (cfg ProxyConf, err error) {
+	proxyType := section["type"]
+	if proxyType == "" {
+		proxyType = consts.TcpProxy
+		section["type"] = consts.TcpProxy
+	}
+	cfg = NewConfByType(proxyType)
+	if cfg == nil {
+		err = fmt.Errorf("proxy [%s] type [%s] error", name, proxyType)
+		return
+	}
+	if err = cfg.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.CheckForCli(); err != nil {
+		return
+	}
+	return
+}
+
+// BaseProxy info
+type BaseProxyConf struct {
+	ProxyName string `json:"proxy_name"`
+	ProxyType string `json:"proxy_type"`
+
+	UseEncryption  bool   `json:"use_encryption"`
+	UseCompression bool   `json:"use_compression"`
+	Group          string `json:"group"`
+	GroupKey       string `json:"group_key"`
+
+	LocalSvrConf
+	HealthCheckConf // only used for client
+}
+
+func (cfg *BaseProxyConf) GetBaseInfo() *BaseProxyConf {
+	return cfg
+}
+
+func (cfg *BaseProxyConf) compare(cmp *BaseProxyConf) bool {
+	if cfg.ProxyName != cmp.ProxyName ||
+		cfg.ProxyType != cmp.ProxyType ||
+		cfg.UseEncryption != cmp.UseEncryption ||
+		cfg.UseCompression != cmp.UseCompression ||
+		cfg.Group != cmp.Group ||
+		cfg.GroupKey != cmp.GroupKey {
+		return false
+	}
+	if !cfg.LocalSvrConf.compare(&cmp.LocalSvrConf) {
+		return false
+	}
+	if !cfg.HealthCheckConf.compare(&cmp.HealthCheckConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *BaseProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.ProxyName = pMsg.ProxyName
+	cfg.ProxyType = pMsg.ProxyType
+	cfg.UseEncryption = pMsg.UseEncryption
+	cfg.UseCompression = pMsg.UseCompression
+	cfg.Group = pMsg.Group
+	cfg.GroupKey = pMsg.GroupKey
+}
+
+func (cfg *BaseProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) error {
+	var (
+		tmpStr string
+		ok     bool
+	)
+	cfg.ProxyName = prefix + name
+	cfg.ProxyType = section["type"]
+
+	tmpStr, ok = section["use_encryption"]
+	if ok && tmpStr == "true" {
+		cfg.UseEncryption = true
+	}
+
+	tmpStr, ok = section["use_compression"]
+	if ok && tmpStr == "true" {
+		cfg.UseCompression = true
+	}
+
+	cfg.Group = section["group"]
+	cfg.GroupKey = section["group_key"]
+
+	if err := cfg.LocalSvrConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return err
+	}
+
+	if err := cfg.HealthCheckConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return err
+	}
+
+	if cfg.HealthCheckType == "tcp" && cfg.Plugin == "" {
+		cfg.HealthCheckAddr = cfg.LocalIp + fmt.Sprintf(":%d", cfg.LocalPort)
+	}
+	if cfg.HealthCheckType == "http" && cfg.Plugin == "" && cfg.HealthCheckUrl != "" {
+		s := fmt.Sprintf("http://%s:%d", cfg.LocalIp, cfg.LocalPort)
+		if !strings.HasPrefix(cfg.HealthCheckUrl, "/") {
+			s += "/"
+		}
+		cfg.HealthCheckUrl = s + cfg.HealthCheckUrl
+	}
+	return nil
+}
+
+func (cfg *BaseProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	pMsg.ProxyName = cfg.ProxyName
+	pMsg.ProxyType = cfg.ProxyType
+	pMsg.UseEncryption = cfg.UseEncryption
+	pMsg.UseCompression = cfg.UseCompression
+	pMsg.Group = cfg.Group
+	pMsg.GroupKey = cfg.GroupKey
+}
+
+func (cfg *BaseProxyConf) checkForCli() (err error) {
+	if err = cfg.LocalSvrConf.checkForCli(); err != nil {
+		return
+	}
+	if err = cfg.HealthCheckConf.checkForCli(); err != nil {
+		return
+	}
+	return nil
+}
+
+// Bind info
+type BindInfoConf struct {
+	RemotePort int `json:"remote_port"`
+}
+
+func (cfg *BindInfoConf) compare(cmp *BindInfoConf) bool {
+	if cfg.RemotePort != cmp.RemotePort {
+		return false
+	}
+	return true
+}
+
+func (cfg *BindInfoConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.RemotePort = pMsg.RemotePort
+}
+
+func (cfg *BindInfoConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	var (
+		tmpStr string
+		ok     bool
+		v      int64
+	)
+	if tmpStr, ok = section["remote_port"]; ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			return fmt.Errorf("Parse conf error: proxy [%s] remote_port error", name)
+		} else {
+			cfg.RemotePort = int(v)
+		}
+	} else {
+		return fmt.Errorf("Parse conf error: proxy [%s] remote_port not found", name)
+	}
+	return nil
+}
+
+func (cfg *BindInfoConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	pMsg.RemotePort = cfg.RemotePort
+}
+
+// Domain info
+type DomainConf struct {
+	CustomDomains []string `json:"custom_domains"`
+	SubDomain     string   `json:"sub_domain"`
+}
+
+func (cfg *DomainConf) compare(cmp *DomainConf) bool {
+	if strings.Join(cfg.CustomDomains, " ") != strings.Join(cmp.CustomDomains, " ") ||
+		cfg.SubDomain != cmp.SubDomain {
+		return false
+	}
+	return true
+}
+
+func (cfg *DomainConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.CustomDomains = pMsg.CustomDomains
+	cfg.SubDomain = pMsg.SubDomain
+}
+
+func (cfg *DomainConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	var (
+		tmpStr string
+		ok     bool
+	)
+	if tmpStr, ok = section["custom_domains"]; ok {
+		cfg.CustomDomains = strings.Split(tmpStr, ",")
+		for i, domain := range cfg.CustomDomains {
+			cfg.CustomDomains[i] = strings.ToLower(strings.TrimSpace(domain))
+		}
+	}
+
+	if tmpStr, ok = section["subdomain"]; ok {
+		cfg.SubDomain = tmpStr
+	}
+	return
+}
+
+func (cfg *DomainConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	pMsg.CustomDomains = cfg.CustomDomains
+	pMsg.SubDomain = cfg.SubDomain
+}
+
+func (cfg *DomainConf) check() (err error) {
+	if len(cfg.CustomDomains) == 0 && cfg.SubDomain == "" {
+		err = fmt.Errorf("custom_domains and subdomain should set at least one of them")
+		return
+	}
+	return
+}
+
+func (cfg *DomainConf) checkForCli() (err error) {
+	if err = cfg.check(); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *DomainConf) checkForSvr() (err error) {
+	if err = cfg.check(); err != nil {
+		return
+	}
+
+	for _, domain := range cfg.CustomDomains {
+		if subDomainHost != "" && len(strings.Split(subDomainHost, ".")) < len(strings.Split(domain, ".")) {
+			if strings.Contains(domain, subDomainHost) {
+				return fmt.Errorf("custom domain [%s] should not belong to subdomain_host [%s]", domain, subDomainHost)
+			}
+		}
+	}
+
+	if cfg.SubDomain != "" {
+		if subDomainHost == "" {
+			return fmt.Errorf("subdomain is not supported because this feature is not enabled in remote frps")
+		}
+		if strings.Contains(cfg.SubDomain, ".") || strings.Contains(cfg.SubDomain, "*") {
+			return fmt.Errorf("'.' and '*' is not supported in subdomain")
+		}
+	}
+	return
+}
+
+// Local service info
+type LocalSvrConf struct {
+	LocalIp   string `json:"local_ip"`
+	LocalPort int    `json:"local_port"`
+
+	Plugin       string            `json:"plugin"`
+	PluginParams map[string]string `json:"plugin_params"`
+}
+
+func (cfg *LocalSvrConf) compare(cmp *LocalSvrConf) bool {
+	if cfg.LocalIp != cmp.LocalIp ||
+		cfg.LocalPort != cmp.LocalPort {
+		return false
+	}
+	if cfg.Plugin != cmp.Plugin ||
+		len(cfg.PluginParams) != len(cmp.PluginParams) {
+		return false
+	}
+	for k, v := range cfg.PluginParams {
+		value, ok := cmp.PluginParams[k]
+		if !ok || v != value {
+			return false
+		}
+	}
+	return true
+}
+
+func (cfg *LocalSvrConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	cfg.Plugin = section["plugin"]
+	cfg.PluginParams = make(map[string]string)
+	if cfg.Plugin != "" {
+		// get params begin with "plugin_"
+		for k, v := range section {
+			if strings.HasPrefix(k, "plugin_") {
+				cfg.PluginParams[k] = v
+			}
+		}
+	} else {
+		if cfg.LocalIp = section["local_ip"]; cfg.LocalIp == "" {
+			cfg.LocalIp = "127.0.0.1"
+		}
+
+		if tmpStr, ok := section["local_port"]; ok {
+			if cfg.LocalPort, err = strconv.Atoi(tmpStr); err != nil {
+				return fmt.Errorf("Parse conf error: proxy [%s] local_port error", name)
+			}
+		} else {
+			return fmt.Errorf("Parse conf error: proxy [%s] local_port not found", name)
+		}
+	}
+	return
+}
+
+func (cfg *LocalSvrConf) checkForCli() (err error) {
+	if cfg.Plugin == "" {
+		if cfg.LocalIp == "" {
+			err = fmt.Errorf("local ip or plugin is required")
+			return
+		}
+		if cfg.LocalPort <= 0 {
+			err = fmt.Errorf("error local_port")
+			return
+		}
+	}
+	return
+}
+
+// Health check info
+type HealthCheckConf struct {
+	HealthCheckType      string `json:"health_check_type"` // tcp | http
+	HealthCheckTimeoutS  int    `json:"health_check_timeout_s"`
+	HealthCheckMaxFailed int    `json:"health_check_max_failed"`
+	HealthCheckIntervalS int    `json:"health_check_interval_s"`
+	HealthCheckUrl       string `json:"health_check_url"`
+
+	// local_ip + local_port
+	HealthCheckAddr string `json:"-"`
+}
+
+func (cfg *HealthCheckConf) compare(cmp *HealthCheckConf) bool {
+	if cfg.HealthCheckType != cmp.HealthCheckType ||
+		cfg.HealthCheckTimeoutS != cmp.HealthCheckTimeoutS ||
+		cfg.HealthCheckMaxFailed != cmp.HealthCheckMaxFailed ||
+		cfg.HealthCheckIntervalS != cmp.HealthCheckIntervalS ||
+		cfg.HealthCheckUrl != cmp.HealthCheckUrl {
+		return false
+	}
+	return true
+}
+
+func (cfg *HealthCheckConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	cfg.HealthCheckType = section["health_check_type"]
+	cfg.HealthCheckUrl = section["health_check_url"]
+
+	if tmpStr, ok := section["health_check_timeout_s"]; ok {
+		if cfg.HealthCheckTimeoutS, err = strconv.Atoi(tmpStr); err != nil {
+			return fmt.Errorf("Parse conf error: proxy [%s] health_check_timeout_s error", name)
+		}
+	}
+
+	if tmpStr, ok := section["health_check_max_failed"]; ok {
+		if cfg.HealthCheckMaxFailed, err = strconv.Atoi(tmpStr); err != nil {
+			return fmt.Errorf("Parse conf error: proxy [%s] health_check_max_failed error", name)
+		}
+	}
+
+	if tmpStr, ok := section["health_check_interval_s"]; ok {
+		if cfg.HealthCheckIntervalS, err = strconv.Atoi(tmpStr); err != nil {
+			return fmt.Errorf("Parse conf error: proxy [%s] health_check_interval_s error", name)
+		}
+	}
+	return
+}
+
+func (cfg *HealthCheckConf) checkForCli() error {
+	if cfg.HealthCheckType != "" && cfg.HealthCheckType != "tcp" && cfg.HealthCheckType != "http" {
+		return fmt.Errorf("unsupport health check type")
+	}
+	if cfg.HealthCheckType != "" {
+		if cfg.HealthCheckType == "http" && cfg.HealthCheckUrl == "" {
+			return fmt.Errorf("health_check_url is required for health check type 'http'")
+		}
+	}
+	return nil
+}
+
+// TCP
+type TcpProxyConf struct {
+	BaseProxyConf
+	BindInfoConf
+}
+
+func (cfg *TcpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*TcpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		!cfg.BindInfoConf.compare(&cmpConf.BindInfoConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *TcpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.BindInfoConf.UnmarshalFromMsg(pMsg)
+}
+
+func (cfg *TcpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.BindInfoConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *TcpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	cfg.BindInfoConf.MarshalToMsg(pMsg)
+}
+
+func (cfg *TcpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return err
+	}
+	return
+}
+
+func (cfg *TcpProxyConf) CheckForSvr() error { return nil }
+
+// UDP
+type UdpProxyConf struct {
+	BaseProxyConf
+	BindInfoConf
+}
+
+func (cfg *UdpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*UdpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		!cfg.BindInfoConf.compare(&cmpConf.BindInfoConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *UdpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.BindInfoConf.UnmarshalFromMsg(pMsg)
+}
+
+func (cfg *UdpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.BindInfoConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *UdpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	cfg.BindInfoConf.MarshalToMsg(pMsg)
+}
+
+func (cfg *UdpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *UdpProxyConf) CheckForSvr() error { return nil }
+
+// HTTP
+type HttpProxyConf struct {
+	BaseProxyConf
+	DomainConf
+
+	Locations         []string          `json:"locations"`
+	HttpUser          string            `json:"http_user"`
+	HttpPwd           string            `json:"http_pwd"`
+	HostHeaderRewrite string            `json:"host_header_rewrite"`
+	Headers           map[string]string `json:"headers"`
+}
+
+func (cfg *HttpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*HttpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		!cfg.DomainConf.compare(&cmpConf.DomainConf) ||
+		strings.Join(cfg.Locations, " ") != strings.Join(cmpConf.Locations, " ") ||
+		cfg.HostHeaderRewrite != cmpConf.HostHeaderRewrite ||
+		cfg.HttpUser != cmpConf.HttpUser ||
+		cfg.HttpPwd != cmpConf.HttpPwd ||
+		len(cfg.Headers) != len(cmpConf.Headers) {
+		return false
+	}
+
+	for k, v := range cfg.Headers {
+		if v2, ok := cmpConf.Headers[k]; !ok {
+			return false
+		} else {
+			if v != v2 {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+func (cfg *HttpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.DomainConf.UnmarshalFromMsg(pMsg)
+
+	cfg.Locations = pMsg.Locations
+	cfg.HostHeaderRewrite = pMsg.HostHeaderRewrite
+	cfg.HttpUser = pMsg.HttpUser
+	cfg.HttpPwd = pMsg.HttpPwd
+	cfg.Headers = pMsg.Headers
+}
+
+func (cfg *HttpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.DomainConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+
+	var (
+		tmpStr string
+		ok     bool
+	)
+	if tmpStr, ok = section["locations"]; ok {
+		cfg.Locations = strings.Split(tmpStr, ",")
+	} else {
+		cfg.Locations = []string{""}
+	}
+
+	cfg.HostHeaderRewrite = section["host_header_rewrite"]
+	cfg.HttpUser = section["http_user"]
+	cfg.HttpPwd = section["http_pwd"]
+	cfg.Headers = make(map[string]string)
+
+	for k, v := range section {
+		if strings.HasPrefix(k, "header_") {
+			cfg.Headers[strings.TrimPrefix(k, "header_")] = v
+		}
+	}
+	return
+}
+
+func (cfg *HttpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	cfg.DomainConf.MarshalToMsg(pMsg)
+
+	pMsg.Locations = cfg.Locations
+	pMsg.HostHeaderRewrite = cfg.HostHeaderRewrite
+	pMsg.HttpUser = cfg.HttpUser
+	pMsg.HttpPwd = cfg.HttpPwd
+	pMsg.Headers = cfg.Headers
+}
+
+func (cfg *HttpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	if err = cfg.DomainConf.checkForCli(); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *HttpProxyConf) CheckForSvr() (err error) {
+	if vhostHttpPort == 0 {
+		return fmt.Errorf("type [http] not support when vhost_http_port is not set")
+	}
+	if err = cfg.DomainConf.checkForSvr(); err != nil {
+		err = fmt.Errorf("proxy [%s] domain conf check error: %v", cfg.ProxyName, err)
+		return
+	}
+	return
+}
+
+// HTTPS
+type HttpsProxyConf struct {
+	BaseProxyConf
+	DomainConf
+}
+
+func (cfg *HttpsProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*HttpsProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		!cfg.DomainConf.compare(&cmpConf.DomainConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *HttpsProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.DomainConf.UnmarshalFromMsg(pMsg)
+}
+
+func (cfg *HttpsProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.DomainConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *HttpsProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	cfg.DomainConf.MarshalToMsg(pMsg)
+}
+
+func (cfg *HttpsProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	if err = cfg.DomainConf.checkForCli(); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *HttpsProxyConf) CheckForSvr() (err error) {
+	if vhostHttpsPort == 0 {
+		return fmt.Errorf("type [https] not support when vhost_https_port is not set")
+	}
+	if err = cfg.DomainConf.checkForSvr(); err != nil {
+		err = fmt.Errorf("proxy [%s] domain conf check error: %v", cfg.ProxyName, err)
+		return
+	}
+	return
+}
+
+// STCP
+type StcpProxyConf struct {
+	BaseProxyConf
+
+	Role string `json:"role"`
+	Sk   string `json:"sk"`
+}
+
+func (cfg *StcpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*StcpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		cfg.Role != cmpConf.Role ||
+		cfg.Sk != cmpConf.Sk {
+		return false
+	}
+	return true
+}
+
+// Only for role server.
+func (cfg *StcpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.Sk = pMsg.Sk
+}
+
+func (cfg *StcpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+
+	cfg.Role = section["role"]
+	if cfg.Role != "server" {
+		return fmt.Errorf("Parse conf error: proxy [%s] incorrect role [%s]", name, cfg.Role)
+	}
+
+	cfg.Sk = section["sk"]
+
+	if err = cfg.LocalSvrConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *StcpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	pMsg.Sk = cfg.Sk
+}
+
+func (cfg *StcpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	if cfg.Role != "server" {
+		err = fmt.Errorf("role should be 'server'")
+		return
+	}
+	return
+}
+
+func (cfg *StcpProxyConf) CheckForSvr() (err error) {
+	return
+}
+
+// XTCP
+type XtcpProxyConf struct {
+	BaseProxyConf
+
+	Role string `json:"role"`
+	Sk   string `json:"sk"`
+}
+
+func (cfg *XtcpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*XtcpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		!cfg.LocalSvrConf.compare(&cmpConf.LocalSvrConf) ||
+		cfg.Role != cmpConf.Role ||
+		cfg.Sk != cmpConf.Sk {
+		return false
+	}
+	return true
+}
+
+// Only for role server.
+func (cfg *XtcpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.Sk = pMsg.Sk
+}
+
+func (cfg *XtcpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+
+	cfg.Role = section["role"]
+	if cfg.Role != "server" {
+		return fmt.Errorf("Parse conf error: proxy [%s] incorrect role [%s]", name, cfg.Role)
+	}
+
+	cfg.Sk = section["sk"]
+
+	if err = cfg.LocalSvrConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *XtcpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	pMsg.Sk = cfg.Sk
+}
+
+func (cfg *XtcpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	if cfg.Role != "server" {
+		err = fmt.Errorf("role should be 'server'")
+		return
+	}
+	return
+}
+
+func (cfg *XtcpProxyConf) CheckForSvr() (err error) {
+	return
+}
+
+func ParseRangeSection(name string, section ini.Section) (sections map[string]ini.Section, err error) {
+	localPorts, errRet := util.ParseRangeNumbers(section["local_port"])
+	if errRet != nil {
+		err = fmt.Errorf("Parse conf error: range section [%s] local_port invalid, %v", name, errRet)
+		return
+	}
+
+	remotePorts, errRet := util.ParseRangeNumbers(section["remote_port"])
+	if errRet != nil {
+		err = fmt.Errorf("Parse conf error: range section [%s] remote_port invalid, %v", name, errRet)
+		return
+	}
+	if len(localPorts) != len(remotePorts) {
+		err = fmt.Errorf("Parse conf error: range section [%s] local ports number should be same with remote ports number", name)
+		return
+	}
+	if len(localPorts) == 0 {
+		err = fmt.Errorf("Parse conf error: range section [%s] local_port and remote_port is necessary", name)
+		return
+	}
+
+	sections = make(map[string]ini.Section)
+	for i, port := range localPorts {
+		subName := fmt.Sprintf("%s_%d", name, i)
+		subSection := copySection(section)
+		subSection["local_port"] = fmt.Sprintf("%d", port)
+		subSection["remote_port"] = fmt.Sprintf("%d", remotePorts[i])
+		sections[subName] = subSection
+	}
+	return
+}
+
+// if len(startProxy) is 0, start all
+// otherwise just start proxies in startProxy map
+func LoadAllConfFromIni(prefix string, content string, startProxy map[string]struct{}) (
+	proxyConfs map[string]ProxyConf, visitorConfs map[string]VisitorConf, err error) {
+
+	conf, errRet := ini.Load(strings.NewReader(content))
+	if errRet != nil {
+		err = errRet
+		return
+	}
+
+	if prefix != "" {
+		prefix += "."
+	}
+
+	startAll := true
+	if len(startProxy) > 0 {
+		startAll = false
+	}
+	proxyConfs = make(map[string]ProxyConf)
+	visitorConfs = make(map[string]VisitorConf)
+	for name, section := range conf {
+		if name == "common" {
+			continue
+		}
+
+		_, shouldStart := startProxy[name]
+		if !startAll && !shouldStart {
+			continue
+		}
+
+		subSections := make(map[string]ini.Section)
+
+		if strings.HasPrefix(name, "range:") {
+			// range section
+			rangePrefix := strings.TrimSpace(strings.TrimPrefix(name, "range:"))
+			subSections, err = ParseRangeSection(rangePrefix, section)
+			if err != nil {
+				return
+			}
+		} else {
+			subSections[name] = section
+		}
+
+		for subName, subSection := range subSections {
+			if subSection["role"] == "" {
+				subSection["role"] = "server"
+			}
+			role := subSection["role"]
+			if role == "server" {
+				cfg, errRet := NewProxyConfFromIni(prefix, subName, subSection)
+				if errRet != nil {
+					err = errRet
+					return
+				}
+				proxyConfs[prefix+subName] = cfg
+			} else if role == "visitor" {
+				cfg, errRet := NewVisitorConfFromIni(prefix, subName, subSection)
+				if errRet != nil {
+					err = errRet
+					return
+				}
+				visitorConfs[prefix+subName] = cfg
+			} else {
+				err = fmt.Errorf("role should be 'server' or 'visitor'")
+				return
+			}
+		}
+	}
+	return
+}
+
+func copySection(section ini.Section) (out ini.Section) {
+	out = make(ini.Section)
+	for k, v := range section {
+		out[k] = v
+	}
+	return
+}

models/config/server_common.go

@@ -0,0 +1,310 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	ini "github.com/vaughan0/go-ini"
+
+	"github.com/fatedier/frp/utils/util"
+)
+
+var (
+	// server global configure used for generate proxy conf used in frps
+	proxyBindAddr  string
+	subDomainHost  string
+	vhostHttpPort  int
+	vhostHttpsPort int
+)
+
+func InitServerCfg(cfg *ServerCommonConf) {
+	proxyBindAddr = cfg.ProxyBindAddr
+	subDomainHost = cfg.SubDomainHost
+	vhostHttpPort = cfg.VhostHttpPort
+	vhostHttpsPort = cfg.VhostHttpsPort
+}
+
+// common config
+type ServerCommonConf struct {
+	BindAddr      string `json:"bind_addr"`
+	BindPort      int    `json:"bind_port"`
+	BindUdpPort   int    `json:"bind_udp_port"`
+	KcpBindPort   int    `json:"kcp_bind_port"`
+	ProxyBindAddr string `json:"proxy_bind_addr"`
+
+	// If VhostHttpPort equals 0, don't listen a public port for http protocol.
+	VhostHttpPort int `json:"vhost_http_port"`
+
+	// if VhostHttpsPort equals 0, don't listen a public port for https protocol
+	VhostHttpsPort int `json:"vhost_http_port"`
+
+	VhostHttpTimeout int64 `json:"vhost_http_timeout"`
+
+	DashboardAddr string `json:"dashboard_addr"`
+
+	// if DashboardPort equals 0, dashboard is not available
+	DashboardPort int    `json:"dashboard_port"`
+	DashboardUser string `json:"dashboard_user"`
+	DashboardPwd  string `json:"dashboard_pwd"`
+	AssetsDir     string `json:"asserts_dir"`
+	LogFile       string `json:"log_file"`
+	LogWay        string `json:"log_way"` // console or file
+	LogLevel      string `json:"log_level"`
+	LogMaxDays    int64  `json:"log_max_days"`
+	Token         string `json:"token"`
+	SubDomainHost string `json:"subdomain_host"`
+	TcpMux        bool   `json:"tcp_mux"`
+
+	AllowPorts        map[int]struct{}
+	MaxPoolCount      int64 `json:"max_pool_count"`
+	MaxPortsPerClient int64 `json:"max_ports_per_client"`
+	HeartBeatTimeout  int64 `json:"heart_beat_timeout"`
+	UserConnTimeout   int64 `json:"user_conn_timeout"`
+}
+
+func GetDefaultServerConf() *ServerCommonConf {
+	return &ServerCommonConf{
+		BindAddr:          "0.0.0.0",
+		BindPort:          7000,
+		BindUdpPort:       0,
+		KcpBindPort:       0,
+		ProxyBindAddr:     "0.0.0.0",
+		VhostHttpPort:     0,
+		VhostHttpsPort:    0,
+		VhostHttpTimeout:  60,
+		DashboardAddr:     "0.0.0.0",
+		DashboardPort:     0,
+		DashboardUser:     "admin",
+		DashboardPwd:      "admin",
+		AssetsDir:         "",
+		LogFile:           "console",
+		LogWay:            "console",
+		LogLevel:          "info",
+		LogMaxDays:        3,
+		Token:             "",
+		SubDomainHost:     "",
+		TcpMux:            true,
+		AllowPorts:        make(map[int]struct{}),
+		MaxPoolCount:      5,
+		MaxPortsPerClient: 0,
+		HeartBeatTimeout:  90,
+		UserConnTimeout:   10,
+	}
+}
+
+func UnmarshalServerConfFromIni(defaultCfg *ServerCommonConf, content string) (cfg *ServerCommonConf, err error) {
+	cfg = defaultCfg
+	if cfg == nil {
+		cfg = GetDefaultServerConf()
+	}
+
+	conf, err := ini.Load(strings.NewReader(content))
+	if err != nil {
+		err = fmt.Errorf("parse ini conf file error: %v", err)
+		return nil, err
+	}
+
+	var (
+		tmpStr string
+		ok     bool
+		v      int64
+	)
+	if tmpStr, ok = conf.Get("common", "bind_addr"); ok {
+		cfg.BindAddr = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "bind_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid bind_port")
+			return
+		} else {
+			cfg.BindPort = int(v)
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "bind_udp_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid bind_udp_port")
+			return
+		} else {
+			cfg.BindUdpPort = int(v)
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "kcp_bind_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid kcp_bind_port")
+			return
+		} else {
+			cfg.KcpBindPort = int(v)
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "proxy_bind_addr"); ok {
+		cfg.ProxyBindAddr = tmpStr
+	} else {
+		cfg.ProxyBindAddr = cfg.BindAddr
+	}
+
+	if tmpStr, ok = conf.Get("common", "vhost_http_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid vhost_http_port")
+			return
+		} else {
+			cfg.VhostHttpPort = int(v)
+		}
+	} else {
+		cfg.VhostHttpPort = 0
+	}
+
+	if tmpStr, ok = conf.Get("common", "vhost_https_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid vhost_https_port")
+			return
+		} else {
+			cfg.VhostHttpsPort = int(v)
+		}
+	} else {
+		cfg.VhostHttpsPort = 0
+	}
+
+	if tmpStr, ok = conf.Get("common", "vhost_http_timeout"); ok {
+		v, errRet := strconv.ParseInt(tmpStr, 10, 64)
+		if errRet != nil || v < 0 {
+			err = fmt.Errorf("Parse conf error: invalid vhost_http_timeout")
+			return
+		} else {
+			cfg.VhostHttpTimeout = v
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "dashboard_addr"); ok {
+		cfg.DashboardAddr = tmpStr
+	} else {
+		cfg.DashboardAddr = cfg.BindAddr
+	}
+
+	if tmpStr, ok = conf.Get("common", "dashboard_port"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid dashboard_port")
+			return
+		} else {
+			cfg.DashboardPort = int(v)
+		}
+	} else {
+		cfg.DashboardPort = 0
+	}
+
+	if tmpStr, ok = conf.Get("common", "dashboard_user"); ok {
+		cfg.DashboardUser = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "dashboard_pwd"); ok {
+		cfg.DashboardPwd = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "assets_dir"); ok {
+		cfg.AssetsDir = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_file"); ok {
+		cfg.LogFile = tmpStr
+		if cfg.LogFile == "console" {
+			cfg.LogWay = "console"
+		} else {
+			cfg.LogWay = "file"
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_level"); ok {
+		cfg.LogLevel = tmpStr
+	}
+
+	if tmpStr, ok = conf.Get("common", "log_max_days"); ok {
+		v, err = strconv.ParseInt(tmpStr, 10, 64)
+		if err == nil {
+			cfg.LogMaxDays = v
+		}
+	}
+
+	cfg.Token, _ = conf.Get("common", "token")
+
+	if allowPortsStr, ok := conf.Get("common", "allow_ports"); ok {
+		// e.g. 1000-2000,2001,2002,3000-4000
+		ports, errRet := util.ParseRangeNumbers(allowPortsStr)
+		if errRet != nil {
+			err = fmt.Errorf("Parse conf error: allow_ports: %v", errRet)
+			return
+		}
+
+		for _, port := range ports {
+			cfg.AllowPorts[int(port)] = struct{}{}
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "max_pool_count"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid max_pool_count")
+			return
+		} else {
+			if v < 0 {
+				err = fmt.Errorf("Parse conf error: invalid max_pool_count")
+				return
+			}
+			cfg.MaxPoolCount = v
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "max_ports_per_client"); ok {
+		if v, err = strconv.ParseInt(tmpStr, 10, 64); err != nil {
+			err = fmt.Errorf("Parse conf error: invalid max_ports_per_client")
+			return
+		} else {
+			if v < 0 {
+				err = fmt.Errorf("Parse conf error: invalid max_ports_per_client")
+				return
+			}
+			cfg.MaxPortsPerClient = v
+		}
+	}
+
+	if tmpStr, ok = conf.Get("common", "subdomain_host"); ok {
+		cfg.SubDomainHost = strings.ToLower(strings.TrimSpace(tmpStr))
+	}
+
+	if tmpStr, ok = conf.Get("common", "tcp_mux"); ok && tmpStr == "false" {
+		cfg.TcpMux = false
+	} else {
+		cfg.TcpMux = true
+	}
+
+	if tmpStr, ok = conf.Get("common", "heartbeat_timeout"); ok {
+		v, errRet := strconv.ParseInt(tmpStr, 10, 64)
+		if errRet != nil {
+			err = fmt.Errorf("Parse conf error: heartbeat_timeout is incorrect")
+			return
+		} else {
+			cfg.HeartBeatTimeout = v
+		}
+	}
+	return
+}
+
+func (cfg *ServerCommonConf) Check() (err error) {
+	return
+}

models/config/value.go

@@ -0,0 +1,64 @@
+package config
+
+import (
+	"bytes"
+	"io/ioutil"
+	"os"
+	"strings"
+	"text/template"
+)
+
+var (
+	glbEnvs map[string]string
+)
+
+func init() {
+	glbEnvs = make(map[string]string)
+	envs := os.Environ()
+	for _, env := range envs {
+		kv := strings.Split(env, "=")
+		if len(kv) != 2 {
+			continue
+		}
+		glbEnvs[kv[0]] = kv[1]
+	}
+}
+
+type Values struct {
+	Envs map[string]string // environment vars
+}
+
+func GetValues() *Values {
+	return &Values{
+		Envs: glbEnvs,
+	}
+}
+
+func RenderContent(in string) (out string, err error) {
+	tmpl, errRet := template.New("frp").Parse(in)
+	if errRet != nil {
+		err = errRet
+		return
+	}
+
+	buffer := bytes.NewBufferString("")
+	v := GetValues()
+	err = tmpl.Execute(buffer, v)
+	if err != nil {
+		return
+	}
+	out = buffer.String()
+	return
+}
+
+func GetRenderedConfFromFile(path string) (out string, err error) {
+	var b []byte
+	b, err = ioutil.ReadFile(path)
+	if err != nil {
+		return
+	}
+	content := string(b)
+
+	out, err = RenderContent(content)
+	return
+}

models/config/visitor.go

@@ -0,0 +1,213 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+
+	"github.com/fatedier/frp/models/consts"
+
+	ini "github.com/vaughan0/go-ini"
+)
+
+var (
+	visitorConfTypeMap map[string]reflect.Type
+)
+
+func init() {
+	visitorConfTypeMap = make(map[string]reflect.Type)
+	visitorConfTypeMap[consts.StcpProxy] = reflect.TypeOf(StcpVisitorConf{})
+	visitorConfTypeMap[consts.XtcpProxy] = reflect.TypeOf(XtcpVisitorConf{})
+}
+
+type VisitorConf interface {
+	GetBaseInfo() *BaseVisitorConf
+	Compare(cmp VisitorConf) bool
+	UnmarshalFromIni(prefix string, name string, section ini.Section) error
+	Check() error
+}
+
+func NewVisitorConfByType(cfgType string) VisitorConf {
+	v, ok := visitorConfTypeMap[cfgType]
+	if !ok {
+		return nil
+	}
+	cfg := reflect.New(v).Interface().(VisitorConf)
+	return cfg
+}
+
+func NewVisitorConfFromIni(prefix string, name string, section ini.Section) (cfg VisitorConf, err error) {
+	cfgType := section["type"]
+	if cfgType == "" {
+		err = fmt.Errorf("visitor [%s] type shouldn't be empty", name)
+		return
+	}
+	cfg = NewVisitorConfByType(cfgType)
+	if cfg == nil {
+		err = fmt.Errorf("visitor [%s] type [%s] error", name, cfgType)
+		return
+	}
+	if err = cfg.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	if err = cfg.Check(); err != nil {
+		return
+	}
+	return
+}
+
+type BaseVisitorConf struct {
+	ProxyName      string `json:"proxy_name"`
+	ProxyType      string `json:"proxy_type"`
+	UseEncryption  bool   `json:"use_encryption"`
+	UseCompression bool   `json:"use_compression"`
+	Role           string `json:"role"`
+	Sk             string `json:"sk"`
+	ServerName     string `json:"server_name"`
+	BindAddr       string `json:"bind_addr"`
+	BindPort       int    `json:"bind_port"`
+}
+
+func (cfg *BaseVisitorConf) GetBaseInfo() *BaseVisitorConf {
+	return cfg
+}
+
+func (cfg *BaseVisitorConf) compare(cmp *BaseVisitorConf) bool {
+	if cfg.ProxyName != cmp.ProxyName ||
+		cfg.ProxyType != cmp.ProxyType ||
+		cfg.UseEncryption != cmp.UseEncryption ||
+		cfg.UseCompression != cmp.UseCompression ||
+		cfg.Role != cmp.Role ||
+		cfg.Sk != cmp.Sk ||
+		cfg.ServerName != cmp.ServerName ||
+		cfg.BindAddr != cmp.BindAddr ||
+		cfg.BindPort != cmp.BindPort {
+		return false
+	}
+	return true
+}
+
+func (cfg *BaseVisitorConf) check() (err error) {
+	if cfg.Role != "visitor" {
+		err = fmt.Errorf("invalid role")
+		return
+	}
+	if cfg.BindAddr == "" {
+		err = fmt.Errorf("bind_addr shouldn't be empty")
+		return
+	}
+	if cfg.BindPort <= 0 {
+		err = fmt.Errorf("bind_port is required")
+		return
+	}
+	return
+}
+
+func (cfg *BaseVisitorConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	var (
+		tmpStr string
+		ok     bool
+	)
+	cfg.ProxyName = prefix + name
+	cfg.ProxyType = section["type"]
+
+	if tmpStr, ok = section["use_encryption"]; ok && tmpStr == "true" {
+		cfg.UseEncryption = true
+	}
+	if tmpStr, ok = section["use_compression"]; ok && tmpStr == "true" {
+		cfg.UseCompression = true
+	}
+
+	cfg.Role = section["role"]
+	if cfg.Role != "visitor" {
+		return fmt.Errorf("Parse conf error: proxy [%s] incorrect role [%s]", name, cfg.Role)
+	}
+	cfg.Sk = section["sk"]
+	cfg.ServerName = prefix + section["server_name"]
+	if cfg.BindAddr = section["bind_addr"]; cfg.BindAddr == "" {
+		cfg.BindAddr = "127.0.0.1"
+	}
+
+	if tmpStr, ok = section["bind_port"]; ok {
+		if cfg.BindPort, err = strconv.Atoi(tmpStr); err != nil {
+			return fmt.Errorf("Parse conf error: proxy [%s] bind_port incorrect", name)
+		}
+	} else {
+		return fmt.Errorf("Parse conf error: proxy [%s] bind_port not found", name)
+	}
+	return nil
+}
+
+type StcpVisitorConf struct {
+	BaseVisitorConf
+}
+
+func (cfg *StcpVisitorConf) Compare(cmp VisitorConf) bool {
+	cmpConf, ok := cmp.(*StcpVisitorConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseVisitorConf.compare(&cmpConf.BaseVisitorConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *StcpVisitorConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseVisitorConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *StcpVisitorConf) Check() (err error) {
+	if err = cfg.BaseVisitorConf.check(); err != nil {
+		return
+	}
+	return
+}
+
+type XtcpVisitorConf struct {
+	BaseVisitorConf
+}
+
+func (cfg *XtcpVisitorConf) Compare(cmp VisitorConf) bool {
+	cmpConf, ok := cmp.(*XtcpVisitorConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseVisitorConf.compare(&cmpConf.BaseVisitorConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *XtcpVisitorConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseVisitorConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *XtcpVisitorConf) Check() (err error) {
+	if err = cfg.BaseVisitorConf.check(); err != nil {
+		return
+	}
+	return
+}

models/consts/consts.go

@@ -0,0 +1,32 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package consts
+
+var (
+	// proxy status
+	Idle    string = "idle"
+	Working string = "working"
+	Closed  string = "closed"
+	Online  string = "online"
+	Offline string = "offline"
+
+	// proxy type
+	TcpProxy   string = "tcp"
+	UdpProxy   string = "udp"
+	HttpProxy  string = "http"
+	HttpsProxy string = "https"
+	StcpProxy  string = "stcp"
+	XtcpProxy  string = "xtcp"
+)

models/errors/errors.go

@@ -12,29 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package consts
+package errors
 
-// server status
-const (
-	Idle = iota
-	Working
-	Closed
+import (
+	"errors"
 )
 
 var (
-	StatusStr = []string{
-		"idle",
-		"working",
-		"closed",
-	}
-)
-
-// msg type
-const (
-	NewCtlConn = iota
-	NewWorkConn
-	NoticeUserConn
-	NewCtlConnRes
-	HeartbeatReq
-	HeartbeatRes
+	ErrMsgType   = errors.New("message type error")
+	ErrCtlClosed = errors.New("control is closed")
 )

models/msg/ctl.go

@@ -0,0 +1,46 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package msg
+
+import (
+	"io"
+
+	jsonMsg "github.com/fatedier/golib/msg/json"
+)
+
+type Message = jsonMsg.Message
+
+var (
+	msgCtl *jsonMsg.MsgCtl
+)
+
+func init() {
+	msgCtl = jsonMsg.NewMsgCtl()
+	for typeByte, msg := range msgTypeMap {
+		msgCtl.RegisterMsg(typeByte, msg)
+	}
+}
+
+func ReadMsg(c io.Reader) (msg Message, err error) {
+	return msgCtl.ReadMsg(c)
+}
+
+func ReadMsgInto(c io.Reader, msg Message) (err error) {
+	return msgCtl.ReadMsgInto(c, msg)
+}
+
+func WriteMsg(c io.Writer, msg interface{}) (err error) {
+	return msgCtl.WriteMsg(c, msg)
+}

models/msg/msg.go

@@ -0,0 +1,174 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package msg
+
+import "net"
+
+const (
+	TypeLogin              = 'o'
+	TypeLoginResp          = '1'
+	TypeNewProxy           = 'p'
+	TypeNewProxyResp       = '2'
+	TypeCloseProxy         = 'c'
+	TypeNewWorkConn        = 'w'
+	TypeReqWorkConn        = 'r'
+	TypeStartWorkConn      = 's'
+	TypeNewVisitorConn     = 'v'
+	TypeNewVisitorConnResp = '3'
+	TypePing               = 'h'
+	TypePong               = '4'
+	TypeUdpPacket          = 'u'
+	TypeNatHoleVisitor     = 'i'
+	TypeNatHoleClient      = 'n'
+	TypeNatHoleResp        = 'm'
+	TypeNatHoleSid         = '5'
+)
+
+var (
+	msgTypeMap = map[byte]interface{}{
+		TypeLogin:              Login{},
+		TypeLoginResp:          LoginResp{},
+		TypeNewProxy:           NewProxy{},
+		TypeNewProxyResp:       NewProxyResp{},
+		TypeCloseProxy:         CloseProxy{},
+		TypeNewWorkConn:        NewWorkConn{},
+		TypeReqWorkConn:        ReqWorkConn{},
+		TypeStartWorkConn:      StartWorkConn{},
+		TypeNewVisitorConn:     NewVisitorConn{},
+		TypeNewVisitorConnResp: NewVisitorConnResp{},
+		TypePing:               Ping{},
+		TypePong:               Pong{},
+		TypeUdpPacket:          UdpPacket{},
+		TypeNatHoleVisitor:     NatHoleVisitor{},
+		TypeNatHoleClient:      NatHoleClient{},
+		TypeNatHoleResp:        NatHoleResp{},
+		TypeNatHoleSid:         NatHoleSid{},
+	}
+)
+
+// When frpc start, client send this message to login to server.
+type Login struct {
+	Version      string `json:"version"`
+	Hostname     string `json:"hostname"`
+	Os           string `json:"os"`
+	Arch         string `json:"arch"`
+	User         string `json:"user"`
+	PrivilegeKey string `json:"privilege_key"`
+	Timestamp    int64  `json:"timestamp"`
+	RunId        string `json:"run_id"`
+
+	// Some global configures.
+	PoolCount int `json:"pool_count"`
+}
+
+type LoginResp struct {
+	Version       string `json:"version"`
+	RunId         string `json:"run_id"`
+	ServerUdpPort int    `json:"server_udp_port"`
+	Error         string `json:"error"`
+}
+
+// When frpc login success, send this message to frps for running a new proxy.
+type NewProxy struct {
+	ProxyName      string `json:"proxy_name"`
+	ProxyType      string `json:"proxy_type"`
+	UseEncryption  bool   `json:"use_encryption"`
+	UseCompression bool   `json:"use_compression"`
+	Group          string `json:"group"`
+	GroupKey       string `json:"group_key"`
+
+	// tcp and udp only
+	RemotePort int `json:"remote_port"`
+
+	// http and https only
+	CustomDomains     []string          `json:"custom_domains"`
+	SubDomain         string            `json:"subdomain"`
+	Locations         []string          `json:"locations"`
+	HttpUser          string            `json:"http_user"`
+	HttpPwd           string            `json:"http_pwd"`
+	HostHeaderRewrite string            `json:"host_header_rewrite"`
+	Headers           map[string]string `json:"headers"`
+
+	// stcp
+	Sk string `json:"sk"`
+}
+
+type NewProxyResp struct {
+	ProxyName  string `json:"proxy_name"`
+	RemoteAddr string `json:"remote_addr"`
+	Error      string `json:"error"`
+}
+
+type CloseProxy struct {
+	ProxyName string `json:"proxy_name"`
+}
+
+type NewWorkConn struct {
+	RunId string `json:"run_id"`
+}
+
+type ReqWorkConn struct {
+}
+
+type StartWorkConn struct {
+	ProxyName string `json:"proxy_name"`
+}
+
+type NewVisitorConn struct {
+	ProxyName      string `json:"proxy_name"`
+	SignKey        string `json:"sign_key"`
+	Timestamp      int64  `json:"timestamp"`
+	UseEncryption  bool   `json:"use_encryption"`
+	UseCompression bool   `json:"use_compression"`
+}
+
+type NewVisitorConnResp struct {
+	ProxyName string `json:"proxy_name"`
+	Error     string `json:"error"`
+}
+
+type Ping struct {
+}
+
+type Pong struct {
+}
+
+type UdpPacket struct {
+	Content    string       `json:"c"`
+	LocalAddr  *net.UDPAddr `json:"l"`
+	RemoteAddr *net.UDPAddr `json:"r"`
+}
+
+type NatHoleVisitor struct {
+	ProxyName string `json:"proxy_name"`
+	SignKey   string `json:"sign_key"`
+	Timestamp int64  `json:"timestamp"`
+}
+
+type NatHoleClient struct {
+	ProxyName string `json:"proxy_name"`
+	Sid       string `json:"sid"`
+}
+
+type NatHoleResp struct {
+	Sid         string `json:"sid"`
+	VisitorAddr string `json:"visitor_addr"`
+	ClientAddr  string `json:"client_addr"`
+	Error       string `json:"error"`
+}
+
+type NatHoleSid struct {
+	Sid string `json:"sid"`
+}

models/nathole/nathole.go

@@ -0,0 +1,205 @@
+package nathole
+
+import (
+	"bytes"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/utils/log"
+	"github.com/fatedier/frp/utils/util"
+
+	"github.com/fatedier/golib/errors"
+	"github.com/fatedier/golib/pool"
+)
+
+// Timeout seconds.
+var NatHoleTimeout int64 = 10
+
+type NatHoleController struct {
+	listener *net.UDPConn
+
+	clientCfgs map[string]*NatHoleClientCfg
+	sessions   map[string]*NatHoleSession
+
+	mu sync.RWMutex
+}
+
+func NewNatHoleController(udpBindAddr string) (nc *NatHoleController, err error) {
+	addr, err := net.ResolveUDPAddr("udp", udpBindAddr)
+	if err != nil {
+		return nil, err
+	}
+	lconn, err := net.ListenUDP("udp", addr)
+	if err != nil {
+		return nil, err
+	}
+	nc = &NatHoleController{
+		listener:   lconn,
+		clientCfgs: make(map[string]*NatHoleClientCfg),
+		sessions:   make(map[string]*NatHoleSession),
+	}
+	return nc, nil
+}
+
+func (nc *NatHoleController) ListenClient(name string, sk string) (sidCh chan string) {
+	clientCfg := &NatHoleClientCfg{
+		Name:  name,
+		Sk:    sk,
+		SidCh: make(chan string),
+	}
+	nc.mu.Lock()
+	nc.clientCfgs[name] = clientCfg
+	nc.mu.Unlock()
+	return clientCfg.SidCh
+}
+
+func (nc *NatHoleController) CloseClient(name string) {
+	nc.mu.Lock()
+	defer nc.mu.Unlock()
+	delete(nc.clientCfgs, name)
+}
+
+func (nc *NatHoleController) Run() {
+	for {
+		buf := pool.GetBuf(1024)
+		n, raddr, err := nc.listener.ReadFromUDP(buf)
+		if err != nil {
+			log.Trace("nat hole listener read from udp error: %v", err)
+			return
+		}
+
+		rd := bytes.NewReader(buf[:n])
+		rawMsg, err := msg.ReadMsg(rd)
+		if err != nil {
+			log.Trace("read nat hole message error: %v", err)
+			continue
+		}
+
+		switch m := rawMsg.(type) {
+		case *msg.NatHoleVisitor:
+			go nc.HandleVisitor(m, raddr)
+		case *msg.NatHoleClient:
+			go nc.HandleClient(m, raddr)
+		default:
+			log.Trace("error nat hole message type")
+			continue
+		}
+		pool.PutBuf(buf)
+	}
+}
+
+func (nc *NatHoleController) GenSid() string {
+	t := time.Now().Unix()
+	id, _ := util.RandId()
+	return fmt.Sprintf("%d%s", t, id)
+}
+
+func (nc *NatHoleController) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) {
+	sid := nc.GenSid()
+	session := &NatHoleSession{
+		Sid:         sid,
+		VisitorAddr: raddr,
+		NotifyCh:    make(chan struct{}, 0),
+	}
+	nc.mu.Lock()
+	clientCfg, ok := nc.clientCfgs[m.ProxyName]
+	if !ok {
+		nc.mu.Unlock()
+		errInfo := fmt.Sprintf("xtcp server for [%s] doesn't exist", m.ProxyName)
+		log.Debug(errInfo)
+		nc.listener.WriteToUDP(nc.GenNatHoleResponse(nil, errInfo), raddr)
+		return
+	}
+	if m.SignKey != util.GetAuthKey(clientCfg.Sk, m.Timestamp) {
+		nc.mu.Unlock()
+		errInfo := fmt.Sprintf("xtcp connection of [%s] auth failed", m.ProxyName)
+		log.Debug(errInfo)
+		nc.listener.WriteToUDP(nc.GenNatHoleResponse(nil, errInfo), raddr)
+		return
+	}
+
+	nc.sessions[sid] = session
+	nc.mu.Unlock()
+	log.Trace("handle visitor message, sid [%s]", sid)
+
+	defer func() {
+		nc.mu.Lock()
+		delete(nc.sessions, sid)
+		nc.mu.Unlock()
+	}()
+
+	err := errors.PanicToError(func() {
+		clientCfg.SidCh <- sid
+	})
+	if err != nil {
+		return
+	}
+
+	// Wait client connections.
+	select {
+	case <-session.NotifyCh:
+		resp := nc.GenNatHoleResponse(session, "")
+		log.Trace("send nat hole response to visitor")
+		nc.listener.WriteToUDP(resp, raddr)
+	case <-time.After(time.Duration(NatHoleTimeout) * time.Second):
+		return
+	}
+}
+
+func (nc *NatHoleController) HandleClient(m *msg.NatHoleClient, raddr *net.UDPAddr) {
+	nc.mu.RLock()
+	session, ok := nc.sessions[m.Sid]
+	nc.mu.RUnlock()
+	if !ok {
+		return
+	}
+	log.Trace("handle client message, sid [%s]", session.Sid)
+	session.ClientAddr = raddr
+	session.NotifyCh <- struct{}{}
+
+	resp := nc.GenNatHoleResponse(session, "")
+	log.Trace("send nat hole response to client")
+	nc.listener.WriteToUDP(resp, raddr)
+}
+
+func (nc *NatHoleController) GenNatHoleResponse(session *NatHoleSession, errInfo string) []byte {
+	var (
+		sid         string
+		visitorAddr string
+		clientAddr  string
+	)
+	if session != nil {
+		sid = session.Sid
+		visitorAddr = session.VisitorAddr.String()
+		clientAddr = session.ClientAddr.String()
+	}
+	m := &msg.NatHoleResp{
+		Sid:         sid,
+		VisitorAddr: visitorAddr,
+		ClientAddr:  clientAddr,
+		Error:       errInfo,
+	}
+	b := bytes.NewBuffer(nil)
+	err := msg.WriteMsg(b, m)
+	if err != nil {
+		return []byte("")
+	}
+	return b.Bytes()
+}
+
+type NatHoleSession struct {
+	Sid         string
+	VisitorAddr *net.UDPAddr
+	ClientAddr  *net.UDPAddr
+
+	NotifyCh chan struct{}
+}
+
+type NatHoleClientCfg struct {
+	Name  string
+	Sk    string
+	SidCh chan string
+}

models/plugin/http_proxy.go

@@ -0,0 +1,243 @@
+// Copyright 2017 frp team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin
+
+import (
+	"bufio"
+	"encoding/base64"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	frpIo "github.com/fatedier/golib/io"
+	gnet "github.com/fatedier/golib/net"
+)
+
+const PluginHttpProxy = "http_proxy"
+
+func init() {
+	Register(PluginHttpProxy, NewHttpProxyPlugin)
+}
+
+type HttpProxy struct {
+	l          *Listener
+	s          *http.Server
+	AuthUser   string
+	AuthPasswd string
+}
+
+func NewHttpProxyPlugin(params map[string]string) (Plugin, error) {
+	user := params["plugin_http_user"]
+	passwd := params["plugin_http_passwd"]
+	listener := NewProxyListener()
+
+	hp := &HttpProxy{
+		l:          listener,
+		AuthUser:   user,
+		AuthPasswd: passwd,
+	}
+
+	hp.s = &http.Server{
+		Handler: hp,
+	}
+
+	go hp.s.Serve(listener)
+	return hp, nil
+}
+
+func (hp *HttpProxy) Name() string {
+	return PluginHttpProxy
+}
+
+func (hp *HttpProxy) Handle(conn io.ReadWriteCloser, realConn frpNet.Conn) {
+	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
+
+	sc, rd := gnet.NewSharedConn(wrapConn)
+	firstBytes := make([]byte, 7)
+	_, err := rd.Read(firstBytes)
+	if err != nil {
+		wrapConn.Close()
+		return
+	}
+
+	if strings.ToUpper(string(firstBytes)) == "CONNECT" {
+		bufRd := bufio.NewReader(sc)
+		request, err := http.ReadRequest(bufRd)
+		if err != nil {
+			wrapConn.Close()
+			return
+		}
+		hp.handleConnectReq(request, frpIo.WrapReadWriteCloser(bufRd, wrapConn, wrapConn.Close))
+		return
+	}
+
+	hp.l.PutConn(sc)
+	return
+}
+
+func (hp *HttpProxy) Close() error {
+	hp.s.Close()
+	hp.l.Close()
+	return nil
+}
+
+func (hp *HttpProxy) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	if ok := hp.Auth(req); !ok {
+		rw.Header().Set("Proxy-Authenticate", "Basic")
+		rw.WriteHeader(http.StatusProxyAuthRequired)
+		return
+	}
+
+	if req.Method == http.MethodConnect {
+		// deprecated
+		// Connect request is handled in Handle function.
+		hp.ConnectHandler(rw, req)
+	} else {
+		hp.HttpHandler(rw, req)
+	}
+}
+
+func (hp *HttpProxy) HttpHandler(rw http.ResponseWriter, req *http.Request) {
+	removeProxyHeaders(req)
+
+	resp, err := http.DefaultTransport.RoundTrip(req)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	defer resp.Body.Close()
+
+	copyHeaders(rw.Header(), resp.Header)
+	rw.WriteHeader(resp.StatusCode)
+
+	_, err = io.Copy(rw, resp.Body)
+	if err != nil && err != io.EOF {
+		return
+	}
+}
+
+// deprecated
+// Hijack needs to SetReadDeadline on the Conn of the request, but if we use stream compression here,
+// we may always get i/o timeout error.
+func (hp *HttpProxy) ConnectHandler(rw http.ResponseWriter, req *http.Request) {
+	hj, ok := rw.(http.Hijacker)
+	if !ok {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	client, _, err := hj.Hijack()
+	if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	remote, err := net.Dial("tcp", req.URL.Host)
+	if err != nil {
+		http.Error(rw, "Failed", http.StatusBadRequest)
+		client.Close()
+		return
+	}
+	client.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
+
+	go frpIo.Join(remote, client)
+}
+
+func (hp *HttpProxy) Auth(req *http.Request) bool {
+	if hp.AuthUser == "" && hp.AuthPasswd == "" {
+		return true
+	}
+
+	s := strings.SplitN(req.Header.Get("Proxy-Authorization"), " ", 2)
+	if len(s) != 2 {
+		return false
+	}
+
+	b, err := base64.StdEncoding.DecodeString(s[1])
+	if err != nil {
+		return false
+	}
+
+	pair := strings.SplitN(string(b), ":", 2)
+	if len(pair) != 2 {
+		return false
+	}
+
+	if pair[0] != hp.AuthUser || pair[1] != hp.AuthPasswd {
+		return false
+	}
+	return true
+}
+
+func (hp *HttpProxy) handleConnectReq(req *http.Request, rwc io.ReadWriteCloser) {
+	defer rwc.Close()
+	if ok := hp.Auth(req); !ok {
+		res := getBadResponse()
+		res.Write(rwc)
+		return
+	}
+
+	remote, err := net.Dial("tcp", req.URL.Host)
+	if err != nil {
+		res := &http.Response{
+			StatusCode: 400,
+			Proto:      "HTTP/1.1",
+			ProtoMajor: 1,
+			ProtoMinor: 1,
+		}
+		res.Write(rwc)
+		return
+	}
+	rwc.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
+
+	frpIo.Join(remote, rwc)
+}
+
+func copyHeaders(dst, src http.Header) {
+	for key, values := range src {
+		for _, value := range values {
+			dst.Add(key, value)
+		}
+	}
+}
+
+func removeProxyHeaders(req *http.Request) {
+	req.RequestURI = ""
+	req.Header.Del("Proxy-Connection")
+	req.Header.Del("Connection")
+	req.Header.Del("Proxy-Authenticate")
+	req.Header.Del("Proxy-Authorization")
+	req.Header.Del("TE")
+	req.Header.Del("Trailers")
+	req.Header.Del("Transfer-Encoding")
+	req.Header.Del("Upgrade")
+}
+
+func getBadResponse() *http.Response {
+	header := make(map[string][]string)
+	header["Proxy-Authenticate"] = []string{"Basic"}
+	res := &http.Response{
+		Status:     "407 Not authorized",
+		StatusCode: 407,
+		Proto:      "HTTP/1.1",
+		ProtoMajor: 1,
+		ProtoMinor: 1,
+		Header:     header,
+	}
+	return res
+}

models/plugin/plugin.go

@@ -0,0 +1,92 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"sync"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/fatedier/golib/errors"
+)
+
+// Creators is used for create plugins to handle connections.
+var creators = make(map[string]CreatorFn)
+
+// params has prefix "plugin_"
+type CreatorFn func(params map[string]string) (Plugin, error)
+
+func Register(name string, fn CreatorFn) {
+	creators[name] = fn
+}
+
+func Create(name string, params map[string]string) (p Plugin, err error) {
+	if fn, ok := creators[name]; ok {
+		p, err = fn(params)
+	} else {
+		err = fmt.Errorf("plugin [%s] is not registered", name)
+	}
+	return
+}
+
+type Plugin interface {
+	Name() string
+	Handle(conn io.ReadWriteCloser, realConn frpNet.Conn)
+	Close() error
+}
+
+type Listener struct {
+	conns  chan net.Conn
+	closed bool
+	mu     sync.Mutex
+}
+
+func NewProxyListener() *Listener {
+	return &Listener{
+		conns: make(chan net.Conn, 64),
+	}
+}
+
+func (l *Listener) Accept() (net.Conn, error) {
+	conn, ok := <-l.conns
+	if !ok {
+		return nil, fmt.Errorf("listener closed")
+	}
+	return conn, nil
+}
+
+func (l *Listener) PutConn(conn net.Conn) error {
+	err := errors.PanicToError(func() {
+		l.conns <- conn
+	})
+	return err
+}
+
+func (l *Listener) Close() error {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	if !l.closed {
+		close(l.conns)
+		l.closed = true
+	}
+	return nil
+}
+
+func (l *Listener) Addr() net.Addr {
+	return (*net.TCPAddr)(nil)
+}

models/plugin/socks5.go

@@ -0,0 +1,68 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin
+
+import (
+	"io"
+	"io/ioutil"
+	"log"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	gosocks5 "github.com/armon/go-socks5"
+)
+
+const PluginSocks5 = "socks5"
+
+func init() {
+	Register(PluginSocks5, NewSocks5Plugin)
+}
+
+type Socks5Plugin struct {
+	Server *gosocks5.Server
+
+	user   string
+	passwd string
+}
+
+func NewSocks5Plugin(params map[string]string) (p Plugin, err error) {
+	user := params["plugin_user"]
+	passwd := params["plugin_passwd"]
+
+	cfg := &gosocks5.Config{
+		Logger: log.New(ioutil.Discard, "", log.LstdFlags),
+	}
+	if user != "" || passwd != "" {
+		cfg.Credentials = gosocks5.StaticCredentials(map[string]string{user: passwd})
+	}
+	sp := &Socks5Plugin{}
+	sp.Server, err = gosocks5.New(cfg)
+	p = sp
+	return
+}
+
+func (sp *Socks5Plugin) Handle(conn io.ReadWriteCloser, realConn frpNet.Conn) {
+	defer conn.Close()
+	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
+	sp.Server.ServeConn(wrapConn)
+}
+
+func (sp *Socks5Plugin) Name() string {
+	return PluginSocks5
+}
+
+func (sp *Socks5Plugin) Close() error {
+	return nil
+}

models/plugin/static_file.go

@@ -0,0 +1,88 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin
+
+import (
+	"io"
+	"net/http"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/gorilla/mux"
+)
+
+const PluginStaticFile = "static_file"
+
+func init() {
+	Register(PluginStaticFile, NewStaticFilePlugin)
+}
+
+type StaticFilePlugin struct {
+	localPath   string
+	stripPrefix string
+	httpUser    string
+	httpPasswd  string
+
+	l *Listener
+	s *http.Server
+}
+
+func NewStaticFilePlugin(params map[string]string) (Plugin, error) {
+	localPath := params["plugin_local_path"]
+	stripPrefix := params["plugin_strip_prefix"]
+	httpUser := params["plugin_http_user"]
+	httpPasswd := params["plugin_http_passwd"]
+
+	listener := NewProxyListener()
+
+	sp := &StaticFilePlugin{
+		localPath:   localPath,
+		stripPrefix: stripPrefix,
+		httpUser:    httpUser,
+		httpPasswd:  httpPasswd,
+
+		l: listener,
+	}
+	var prefix string
+	if stripPrefix != "" {
+		prefix = "/" + stripPrefix + "/"
+	} else {
+		prefix = "/"
+	}
+
+	router := mux.NewRouter()
+	router.Use(frpNet.NewHttpAuthMiddleware(httpUser, httpPasswd).Middleware)
+	router.PathPrefix(prefix).Handler(frpNet.MakeHttpGzipHandler(http.StripPrefix(prefix, http.FileServer(http.Dir(localPath))))).Methods("GET")
+	sp.s = &http.Server{
+		Handler: router,
+	}
+	go sp.s.Serve(listener)
+	return sp, nil
+}
+
+func (sp *StaticFilePlugin) Handle(conn io.ReadWriteCloser, realConn frpNet.Conn) {
+	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
+	sp.l.PutConn(wrapConn)
+}
+
+func (sp *StaticFilePlugin) Name() string {
+	return PluginStaticFile
+}
+
+func (sp *StaticFilePlugin) Close() error {
+	sp.s.Close()
+	sp.l.Close()
+	return nil
+}

models/plugin/unix_domain_socket.go

@@ -0,0 +1,71 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugin
+
+import (
+	"fmt"
+	"io"
+	"net"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	frpIo "github.com/fatedier/golib/io"
+)
+
+const PluginUnixDomainSocket = "unix_domain_socket"
+
+func init() {
+	Register(PluginUnixDomainSocket, NewUnixDomainSocketPlugin)
+}
+
+type UnixDomainSocketPlugin struct {
+	UnixAddr *net.UnixAddr
+}
+
+func NewUnixDomainSocketPlugin(params map[string]string) (p Plugin, err error) {
+	unixPath, ok := params["plugin_unix_path"]
+	if !ok {
+		err = fmt.Errorf("plugin_unix_path not found")
+		return
+	}
+
+	unixAddr, errRet := net.ResolveUnixAddr("unix", unixPath)
+	if errRet != nil {
+		err = errRet
+		return
+	}
+
+	p = &UnixDomainSocketPlugin{
+		UnixAddr: unixAddr,
+	}
+	return
+}
+
+func (uds *UnixDomainSocketPlugin) Handle(conn io.ReadWriteCloser, realConn frpNet.Conn) {
+	localConn, err := net.DialUnix("unix", nil, uds.UnixAddr)
+	if err != nil {
+		return
+	}
+
+	frpIo.Join(localConn, conn)
+}
+
+func (uds *UnixDomainSocketPlugin) Name() string {
+	return PluginUnixDomainSocket
+}
+
+func (uds *UnixDomainSocketPlugin) Close() error {
+	return nil
+}

models/proto/udp/udp.go

@@ -0,0 +1,137 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package udp
+
+import (
+	"encoding/base64"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/models/msg"
+
+	"github.com/fatedier/golib/errors"
+	"github.com/fatedier/golib/pool"
+)
+
+func NewUdpPacket(buf []byte, laddr, raddr *net.UDPAddr) *msg.UdpPacket {
+	return &msg.UdpPacket{
+		Content:    base64.StdEncoding.EncodeToString(buf),
+		LocalAddr:  laddr,
+		RemoteAddr: raddr,
+	}
+}
+
+func GetContent(m *msg.UdpPacket) (buf []byte, err error) {
+	buf, err = base64.StdEncoding.DecodeString(m.Content)
+	return
+}
+
+func ForwardUserConn(udpConn *net.UDPConn, readCh <-chan *msg.UdpPacket, sendCh chan<- *msg.UdpPacket) {
+	// read
+	go func() {
+		for udpMsg := range readCh {
+			buf, err := GetContent(udpMsg)
+			if err != nil {
+				continue
+			}
+			udpConn.WriteToUDP(buf, udpMsg.RemoteAddr)
+		}
+	}()
+
+	// write
+	buf := pool.GetBuf(1500)
+	defer pool.PutBuf(buf)
+	for {
+		n, remoteAddr, err := udpConn.ReadFromUDP(buf)
+		if err != nil {
+			udpConn.Close()
+			return
+		}
+		// buf[:n] will be encoded to string, so the bytes can be reused
+		udpMsg := NewUdpPacket(buf[:n], nil, remoteAddr)
+		select {
+		case sendCh <- udpMsg:
+		default:
+		}
+	}
+	return
+}
+
+func Forwarder(dstAddr *net.UDPAddr, readCh <-chan *msg.UdpPacket, sendCh chan<- msg.Message) {
+	var (
+		mu sync.RWMutex
+	)
+	udpConnMap := make(map[string]*net.UDPConn)
+
+	// read from dstAddr and write to sendCh
+	writerFn := func(raddr *net.UDPAddr, udpConn *net.UDPConn) {
+		addr := raddr.String()
+		defer func() {
+			mu.Lock()
+			delete(udpConnMap, addr)
+			mu.Unlock()
+			udpConn.Close()
+		}()
+
+		buf := pool.GetBuf(1500)
+		for {
+			udpConn.SetReadDeadline(time.Now().Add(30 * time.Second))
+			n, _, err := udpConn.ReadFromUDP(buf)
+			if err != nil {
+				return
+			}
+
+			udpMsg := NewUdpPacket(buf[:n], nil, raddr)
+			if err = errors.PanicToError(func() {
+				select {
+				case sendCh <- udpMsg:
+				default:
+				}
+			}); err != nil {
+				return
+			}
+		}
+	}
+
+	// read from readCh
+	go func() {
+		for udpMsg := range readCh {
+			buf, err := GetContent(udpMsg)
+			if err != nil {
+				continue
+			}
+			mu.Lock()
+			udpConn, ok := udpConnMap[udpMsg.RemoteAddr.String()]
+			if !ok {
+				udpConn, err = net.DialUDP("udp", nil, dstAddr)
+				if err != nil {
+					continue
+				}
+				udpConnMap[udpMsg.RemoteAddr.String()] = udpConn
+			}
+			mu.Unlock()
+
+			_, err = udpConn.Write(buf)
+			if err != nil {
+				udpConn.Close()
+			}
+
+			if !ok {
+				go writerFn(udpMsg.RemoteAddr, udpConn)
+			}
+		}
+	}()
+}

models/proto/udp/udp_test.go

@@ -0,0 +1,18 @@
+package udp
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUdpPacket(t *testing.T) {
+	assert := assert.New(t)
+
+	buf := []byte("hello world")
+	udpMsg := NewUdpPacket(buf, nil, nil)
+
+	newBuf, err := GetContent(udpMsg)
+	assert.NoError(err)
+	assert.EqualValues(buf, newBuf)
+}

package.sh

@@ -14,8 +14,8 @@ make -f ./Makefile.cross-compiles
 rm -rf ./packages
 mkdir ./packages
 
-os_all='linux windows darwin'
-arch_all='386 amd64 arm'
+os_all='linux windows darwin freebsd'
+arch_all='386 amd64 arm arm64 mips64 mips64le mips mipsle'
 
 for os in $os_all; do
     for arch in $arch_all; do

server/control.go

@@ -0,0 +1,493 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"fmt"
+	"io"
+	"runtime/debug"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+	frpErr "github.com/fatedier/frp/models/errors"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/server/controller"
+	"github.com/fatedier/frp/server/proxy"
+	"github.com/fatedier/frp/server/stats"
+	"github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/version"
+
+	"github.com/fatedier/golib/control/shutdown"
+	"github.com/fatedier/golib/crypto"
+	"github.com/fatedier/golib/errors"
+)
+
+type ControlManager struct {
+	// controls indexed by run id
+	ctlsByRunId map[string]*Control
+
+	mu sync.RWMutex
+}
+
+func NewControlManager() *ControlManager {
+	return &ControlManager{
+		ctlsByRunId: make(map[string]*Control),
+	}
+}
+
+func (cm *ControlManager) Add(runId string, ctl *Control) (oldCtl *Control) {
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+
+	oldCtl, ok := cm.ctlsByRunId[runId]
+	if ok {
+		oldCtl.Replaced(ctl)
+	}
+	cm.ctlsByRunId[runId] = ctl
+	return
+}
+
+// we should make sure if it's the same control to prevent delete a new one
+func (cm *ControlManager) Del(runId string, ctl *Control) {
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+	if c, ok := cm.ctlsByRunId[runId]; ok && c == ctl {
+		delete(cm.ctlsByRunId, runId)
+	}
+}
+
+func (cm *ControlManager) GetById(runId string) (ctl *Control, ok bool) {
+	cm.mu.RLock()
+	defer cm.mu.RUnlock()
+	ctl, ok = cm.ctlsByRunId[runId]
+	return
+}
+
+type Control struct {
+	// all resource managers and controllers
+	rc *controller.ResourceController
+
+	// proxy manager
+	pxyManager *proxy.ProxyManager
+
+	// stats collector to store stats info of clients and proxies
+	statsCollector stats.Collector
+
+	// login message
+	loginMsg *msg.Login
+
+	// control connection
+	conn net.Conn
+
+	// put a message in this channel to send it over control connection to client
+	sendCh chan (msg.Message)
+
+	// read from this channel to get the next message sent by client
+	readCh chan (msg.Message)
+
+	// work connections
+	workConnCh chan net.Conn
+
+	// proxies in one client
+	proxies map[string]proxy.Proxy
+
+	// pool count
+	poolCount int
+
+	// ports used, for limitations
+	portsUsedNum int
+
+	// last time got the Ping message
+	lastPing time.Time
+
+	// A new run id will be generated when a new client login.
+	// If run id got from login message has same run id, it means it's the same client, so we can
+	// replace old controller instantly.
+	runId string
+
+	// control status
+	status string
+
+	readerShutdown  *shutdown.Shutdown
+	writerShutdown  *shutdown.Shutdown
+	managerShutdown *shutdown.Shutdown
+	allShutdown     *shutdown.Shutdown
+
+	mu sync.RWMutex
+}
+
+func NewControl(rc *controller.ResourceController, pxyManager *proxy.ProxyManager,
+	statsCollector stats.Collector, ctlConn net.Conn, loginMsg *msg.Login) *Control {
+
+	return &Control{
+		rc:              rc,
+		pxyManager:      pxyManager,
+		statsCollector:  statsCollector,
+		conn:            ctlConn,
+		loginMsg:        loginMsg,
+		sendCh:          make(chan msg.Message, 10),
+		readCh:          make(chan msg.Message, 10),
+		workConnCh:      make(chan net.Conn, loginMsg.PoolCount+10),
+		proxies:         make(map[string]proxy.Proxy),
+		poolCount:       loginMsg.PoolCount,
+		portsUsedNum:    0,
+		lastPing:        time.Now(),
+		runId:           loginMsg.RunId,
+		status:          consts.Working,
+		readerShutdown:  shutdown.New(),
+		writerShutdown:  shutdown.New(),
+		managerShutdown: shutdown.New(),
+		allShutdown:     shutdown.New(),
+	}
+}
+
+// Start send a login success message to client and start working.
+func (ctl *Control) Start() {
+	loginRespMsg := &msg.LoginResp{
+		Version:       version.Full(),
+		RunId:         ctl.runId,
+		ServerUdpPort: g.GlbServerCfg.BindUdpPort,
+		Error:         "",
+	}
+	msg.WriteMsg(ctl.conn, loginRespMsg)
+
+	go ctl.writer()
+	for i := 0; i < ctl.poolCount; i++ {
+		ctl.sendCh <- &msg.ReqWorkConn{}
+	}
+
+	go ctl.manager()
+	go ctl.reader()
+	go ctl.stoper()
+}
+
+func (ctl *Control) RegisterWorkConn(conn net.Conn) {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	select {
+	case ctl.workConnCh <- conn:
+		ctl.conn.Debug("new work connection registered")
+	default:
+		ctl.conn.Debug("work connection pool is full, discarding")
+		conn.Close()
+	}
+}
+
+// When frps get one user connection, we get one work connection from the pool and return it.
+// If no workConn available in the pool, send message to frpc to get one or more
+// and wait until it is available.
+// return an error if wait timeout
+func (ctl *Control) GetWorkConn() (workConn net.Conn, err error) {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	var ok bool
+	// get a work connection from the pool
+	select {
+	case workConn, ok = <-ctl.workConnCh:
+		if !ok {
+			err = frpErr.ErrCtlClosed
+			return
+		}
+		ctl.conn.Debug("get work connection from pool")
+	default:
+		// no work connections available in the poll, send message to frpc to get more
+		err = errors.PanicToError(func() {
+			ctl.sendCh <- &msg.ReqWorkConn{}
+		})
+		if err != nil {
+			ctl.conn.Error("%v", err)
+			return
+		}
+
+		select {
+		case workConn, ok = <-ctl.workConnCh:
+			if !ok {
+				err = frpErr.ErrCtlClosed
+				ctl.conn.Warn("no work connections avaiable, %v", err)
+				return
+			}
+
+		case <-time.After(time.Duration(g.GlbServerCfg.UserConnTimeout) * time.Second):
+			err = fmt.Errorf("timeout trying to get work connection")
+			ctl.conn.Warn("%v", err)
+			return
+		}
+	}
+
+	// When we get a work connection from pool, replace it with a new one.
+	errors.PanicToError(func() {
+		ctl.sendCh <- &msg.ReqWorkConn{}
+	})
+	return
+}
+
+func (ctl *Control) Replaced(newCtl *Control) {
+	ctl.conn.Info("Replaced by client [%s]", newCtl.runId)
+	ctl.runId = ""
+	ctl.allShutdown.Start()
+}
+
+func (ctl *Control) writer() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	defer ctl.allShutdown.Start()
+	defer ctl.writerShutdown.Done()
+
+	encWriter, err := crypto.NewWriter(ctl.conn, []byte(g.GlbServerCfg.Token))
+	if err != nil {
+		ctl.conn.Error("crypto new writer error: %v", err)
+		ctl.allShutdown.Start()
+		return
+	}
+	for {
+		if m, ok := <-ctl.sendCh; !ok {
+			ctl.conn.Info("control writer is closing")
+			return
+		} else {
+			if err := msg.WriteMsg(encWriter, m); err != nil {
+				ctl.conn.Warn("write message to control connection error: %v", err)
+				return
+			}
+		}
+	}
+}
+
+func (ctl *Control) reader() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	defer ctl.allShutdown.Start()
+	defer ctl.readerShutdown.Done()
+
+	encReader := crypto.NewReader(ctl.conn, []byte(g.GlbServerCfg.Token))
+	for {
+		if m, err := msg.ReadMsg(encReader); err != nil {
+			if err == io.EOF {
+				ctl.conn.Debug("control connection closed")
+				return
+			} else {
+				ctl.conn.Warn("read error: %v", err)
+				return
+			}
+		} else {
+			ctl.readCh <- m
+		}
+	}
+}
+
+func (ctl *Control) stoper() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	ctl.allShutdown.WaitStart()
+
+	close(ctl.readCh)
+	ctl.managerShutdown.WaitDone()
+
+	close(ctl.sendCh)
+	ctl.writerShutdown.WaitDone()
+
+	ctl.conn.Close()
+	ctl.readerShutdown.WaitDone()
+
+	ctl.mu.Lock()
+	defer ctl.mu.Unlock()
+
+	close(ctl.workConnCh)
+	for workConn := range ctl.workConnCh {
+		workConn.Close()
+	}
+
+	for _, pxy := range ctl.proxies {
+		pxy.Close()
+		ctl.pxyManager.Del(pxy.GetName())
+		ctl.statsCollector.Mark(stats.TypeCloseProxy, &stats.CloseProxyPayload{
+			Name:      pxy.GetName(),
+			ProxyType: pxy.GetConf().GetBaseInfo().ProxyType,
+		})
+	}
+
+	ctl.allShutdown.Done()
+	ctl.conn.Info("client exit success")
+
+	ctl.statsCollector.Mark(stats.TypeCloseClient, &stats.CloseClientPayload{})
+}
+
+// block until Control closed
+func (ctl *Control) WaitClosed() {
+	ctl.allShutdown.WaitDone()
+}
+
+func (ctl *Control) manager() {
+	defer func() {
+		if err := recover(); err != nil {
+			ctl.conn.Error("panic error: %v", err)
+			ctl.conn.Error(string(debug.Stack()))
+		}
+	}()
+
+	defer ctl.allShutdown.Start()
+	defer ctl.managerShutdown.Done()
+
+	heartbeat := time.NewTicker(time.Second)
+	defer heartbeat.Stop()
+
+	for {
+		select {
+		case <-heartbeat.C:
+			if time.Since(ctl.lastPing) > time.Duration(g.GlbServerCfg.HeartBeatTimeout)*time.Second {
+				ctl.conn.Warn("heartbeat timeout")
+				return
+			}
+		case rawMsg, ok := <-ctl.readCh:
+			if !ok {
+				return
+			}
+
+			switch m := rawMsg.(type) {
+			case *msg.NewProxy:
+				// register proxy in this control
+				remoteAddr, err := ctl.RegisterProxy(m)
+				resp := &msg.NewProxyResp{
+					ProxyName: m.ProxyName,
+				}
+				if err != nil {
+					resp.Error = err.Error()
+					ctl.conn.Warn("new proxy [%s] error: %v", m.ProxyName, err)
+				} else {
+					resp.RemoteAddr = remoteAddr
+					ctl.conn.Info("new proxy [%s] success", m.ProxyName)
+					ctl.statsCollector.Mark(stats.TypeNewProxy, &stats.NewProxyPayload{
+						Name:      m.ProxyName,
+						ProxyType: m.ProxyType,
+					})
+				}
+				ctl.sendCh <- resp
+			case *msg.CloseProxy:
+				ctl.CloseProxy(m)
+				ctl.conn.Info("close proxy [%s] success", m.ProxyName)
+			case *msg.Ping:
+				ctl.lastPing = time.Now()
+				ctl.conn.Debug("receive heartbeat")
+				ctl.sendCh <- &msg.Pong{}
+			}
+		}
+	}
+}
+
+func (ctl *Control) RegisterProxy(pxyMsg *msg.NewProxy) (remoteAddr string, err error) {
+	var pxyConf config.ProxyConf
+	// Load configures from NewProxy message and check.
+	pxyConf, err = config.NewProxyConfFromMsg(pxyMsg)
+	if err != nil {
+		return
+	}
+
+	// NewProxy will return a interface Proxy.
+	// In fact it create different proxies by different proxy type, we just call run() here.
+	pxy, err := proxy.NewProxy(ctl.runId, ctl.rc, ctl.statsCollector, ctl.poolCount, ctl.GetWorkConn, pxyConf)
+	if err != nil {
+		return remoteAddr, err
+	}
+
+	// Check ports used number in each client
+	if g.GlbServerCfg.MaxPortsPerClient > 0 {
+		ctl.mu.Lock()
+		if ctl.portsUsedNum+pxy.GetUsedPortsNum() > int(g.GlbServerCfg.MaxPortsPerClient) {
+			ctl.mu.Unlock()
+			err = fmt.Errorf("exceed the max_ports_per_client")
+			return
+		}
+		ctl.portsUsedNum = ctl.portsUsedNum + pxy.GetUsedPortsNum()
+		ctl.mu.Unlock()
+
+		defer func() {
+			if err != nil {
+				ctl.mu.Lock()
+				ctl.portsUsedNum = ctl.portsUsedNum - pxy.GetUsedPortsNum()
+				ctl.mu.Unlock()
+			}
+		}()
+	}
+
+	remoteAddr, err = pxy.Run()
+	if err != nil {
+		return
+	}
+	defer func() {
+		if err != nil {
+			pxy.Close()
+		}
+	}()
+
+	err = ctl.pxyManager.Add(pxyMsg.ProxyName, pxy)
+	if err != nil {
+		return
+	}
+
+	ctl.mu.Lock()
+	ctl.proxies[pxy.GetName()] = pxy
+	ctl.mu.Unlock()
+	return
+}
+
+func (ctl *Control) CloseProxy(closeMsg *msg.CloseProxy) (err error) {
+	ctl.mu.Lock()
+	pxy, ok := ctl.proxies[closeMsg.ProxyName]
+	if !ok {
+		ctl.mu.Unlock()
+		return
+	}
+
+	if g.GlbServerCfg.MaxPortsPerClient > 0 {
+		ctl.portsUsedNum = ctl.portsUsedNum - pxy.GetUsedPortsNum()
+	}
+	pxy.Close()
+	ctl.pxyManager.Del(pxy.GetName())
+	delete(ctl.proxies, closeMsg.ProxyName)
+	ctl.mu.Unlock()
+
+	ctl.statsCollector.Mark(stats.TypeCloseProxy, &stats.CloseProxyPayload{
+		Name:      pxy.GetName(),
+		ProxyType: pxy.GetConf().GetBaseInfo().ProxyType,
+	})
+	return
+}

server/controller/resource.go

@@ -0,0 +1,46 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package controller
+
+import (
+	"github.com/fatedier/frp/models/nathole"
+	"github.com/fatedier/frp/server/group"
+	"github.com/fatedier/frp/server/ports"
+	"github.com/fatedier/frp/utils/vhost"
+)
+
+// All resource managers and controllers
+type ResourceController struct {
+	// Manage all visitor listeners
+	VisitorManager *VisitorManager
+
+	// Tcp Group Controller
+	TcpGroupCtl *group.TcpGroupCtl
+
+	// Manage all tcp ports
+	TcpPortManager *ports.PortManager
+
+	// Manage all udp ports
+	UdpPortManager *ports.PortManager
+
+	// For http proxies, forwarding http requests
+	HttpReverseProxy *vhost.HttpReverseProxy
+
+	// For https proxies, route requests to different clients by hostname and other infomation
+	VhostHttpsMuxer *vhost.HttpsMuxer
+
+	// Controller for nat hole connections
+	NatHoleController *nathole.NatHoleController
+}

server/controller/visitor.go

@@ -0,0 +1,95 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package controller
+
+import (
+	"fmt"
+	"io"
+	"sync"
+
+	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/util"
+
+	frpIo "github.com/fatedier/golib/io"
+)
+
+// Manager for visitor listeners.
+type VisitorManager struct {
+	visitorListeners map[string]*frpNet.CustomListener
+	skMap            map[string]string
+
+	mu sync.RWMutex
+}
+
+func NewVisitorManager() *VisitorManager {
+	return &VisitorManager{
+		visitorListeners: make(map[string]*frpNet.CustomListener),
+		skMap:            make(map[string]string),
+	}
+}
+
+func (vm *VisitorManager) Listen(name string, sk string) (l *frpNet.CustomListener, err error) {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+
+	if _, ok := vm.visitorListeners[name]; ok {
+		err = fmt.Errorf("custom listener for [%s] is repeated", name)
+		return
+	}
+
+	l = frpNet.NewCustomListener()
+	vm.visitorListeners[name] = l
+	vm.skMap[name] = sk
+	return
+}
+
+func (vm *VisitorManager) NewConn(name string, conn frpNet.Conn, timestamp int64, signKey string,
+	useEncryption bool, useCompression bool) (err error) {
+
+	vm.mu.RLock()
+	defer vm.mu.RUnlock()
+
+	if l, ok := vm.visitorListeners[name]; ok {
+		var sk string
+		if sk = vm.skMap[name]; util.GetAuthKey(sk, timestamp) != signKey {
+			err = fmt.Errorf("visitor connection of [%s] auth failed", name)
+			return
+		}
+
+		var rwc io.ReadWriteCloser = conn
+		if useEncryption {
+			if rwc, err = frpIo.WithEncryption(rwc, []byte(sk)); err != nil {
+				err = fmt.Errorf("create encryption connection failed: %v", err)
+				return
+			}
+		}
+		if useCompression {
+			rwc = frpIo.WithCompression(rwc)
+		}
+		err = l.PutConn(frpNet.WrapReadWriteCloserToConn(rwc, conn))
+	} else {
+		err = fmt.Errorf("custom listener for [%s] doesn't exist", name)
+		return
+	}
+	return
+}
+
+func (vm *VisitorManager) CloseListener(name string) {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+
+	delete(vm.visitorListeners, name)
+	delete(vm.skMap, name)
+}

server/dashboard.go

@@ -0,0 +1,73 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/fatedier/frp/assets"
+	"github.com/fatedier/frp/g"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	"github.com/gorilla/mux"
+)
+
+var (
+	httpServerReadTimeout  = 10 * time.Second
+	httpServerWriteTimeout = 10 * time.Second
+)
+
+func (svr *Service) RunDashboardServer(addr string, port int) (err error) {
+	// url router
+	router := mux.NewRouter()
+
+	user, passwd := g.GlbServerCfg.DashboardUser, g.GlbServerCfg.DashboardPwd
+	router.Use(frpNet.NewHttpAuthMiddleware(user, passwd).Middleware)
+
+	// api, see dashboard_api.go
+	router.HandleFunc("/api/serverinfo", svr.ApiServerInfo).Methods("GET")
+	router.HandleFunc("/api/proxy/{type}", svr.ApiProxyByType).Methods("GET")
+	router.HandleFunc("/api/proxy/{type}/{name}", svr.ApiProxyByTypeAndName).Methods("GET")
+	router.HandleFunc("/api/traffic/{name}", svr.ApiProxyTraffic).Methods("GET")
+
+	// view
+	router.Handle("/favicon.ico", http.FileServer(assets.FileSystem)).Methods("GET")
+	router.PathPrefix("/static/").Handler(frpNet.MakeHttpGzipHandler(http.StripPrefix("/static/", http.FileServer(assets.FileSystem)))).Methods("GET")
+
+	router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, "/static/", http.StatusMovedPermanently)
+	})
+
+	address := fmt.Sprintf("%s:%d", addr, port)
+	server := &http.Server{
+		Addr:         address,
+		Handler:      router,
+		ReadTimeout:  httpServerReadTimeout,
+		WriteTimeout: httpServerWriteTimeout,
+	}
+	if address == "" {
+		address = ":http"
+	}
+	ln, err := net.Listen("tcp", address)
+	if err != nil {
+		return err
+	}
+
+	go server.Serve(ln)
+	return
+}

server/dashboard_api.go

@@ -0,0 +1,321 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+	"github.com/fatedier/frp/utils/log"
+	"github.com/fatedier/frp/utils/version"
+
+	"github.com/gorilla/mux"
+)
+
+type GeneralResponse struct {
+	Code int64  `json:"code"`
+	Msg  string `json:"msg"`
+}
+
+type ServerInfoResp struct {
+	GeneralResponse
+
+	Version           string `json:"version"`
+	BindPort          int    `json:"bind_port"`
+	BindUdpPort       int    `json:"bind_udp_port"`
+	VhostHttpPort     int    `json:"vhost_http_port"`
+	VhostHttpsPort    int    `json:"vhost_https_port"`
+	KcpBindPort       int    `json:"kcp_bind_port"`
+	SubdomainHost     string `json:"subdomain_host"`
+	MaxPoolCount      int64  `json:"max_pool_count"`
+	MaxPortsPerClient int64  `json:"max_ports_per_client"`
+	HeartBeatTimeout  int64  `json:"heart_beat_timeout"`
+
+	TotalTrafficIn  int64            `json:"total_traffic_in"`
+	TotalTrafficOut int64            `json:"total_traffic_out"`
+	CurConns        int64            `json:"cur_conns"`
+	ClientCounts    int64            `json:"client_counts"`
+	ProxyTypeCounts map[string]int64 `json:"proxy_type_count"`
+}
+
+// api/serverinfo
+func (svr *Service) ApiServerInfo(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res ServerInfoResp
+	)
+	defer func() {
+		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+	}()
+
+	log.Info("Http request: [%s]", r.URL.Path)
+	cfg := &g.GlbServerCfg.ServerCommonConf
+	serverStats := svr.statsCollector.GetServer()
+	res = ServerInfoResp{
+		Version:           version.Full(),
+		BindPort:          cfg.BindPort,
+		BindUdpPort:       cfg.BindUdpPort,
+		VhostHttpPort:     cfg.VhostHttpPort,
+		VhostHttpsPort:    cfg.VhostHttpsPort,
+		KcpBindPort:       cfg.KcpBindPort,
+		SubdomainHost:     cfg.SubDomainHost,
+		MaxPoolCount:      cfg.MaxPoolCount,
+		MaxPortsPerClient: cfg.MaxPortsPerClient,
+		HeartBeatTimeout:  cfg.HeartBeatTimeout,
+
+		TotalTrafficIn:  serverStats.TotalTrafficIn,
+		TotalTrafficOut: serverStats.TotalTrafficOut,
+		CurConns:        serverStats.CurConns,
+		ClientCounts:    serverStats.ClientCounts,
+		ProxyTypeCounts: serverStats.ProxyTypeCounts,
+	}
+
+	buf, _ = json.Marshal(&res)
+	w.Write(buf)
+}
+
+type BaseOutConf struct {
+	config.BaseProxyConf
+}
+
+type TcpOutConf struct {
+	BaseOutConf
+	RemotePort int `json:"remote_port"`
+}
+
+type UdpOutConf struct {
+	BaseOutConf
+	RemotePort int `json:"remote_port"`
+}
+
+type HttpOutConf struct {
+	BaseOutConf
+	config.DomainConf
+	Locations         []string `json:"locations"`
+	HostHeaderRewrite string   `json:"host_header_rewrite"`
+}
+
+type HttpsOutConf struct {
+	BaseOutConf
+	config.DomainConf
+}
+
+type StcpOutConf struct {
+	BaseOutConf
+}
+
+type XtcpOutConf struct {
+	BaseOutConf
+}
+
+func getConfByType(proxyType string) interface{} {
+	switch proxyType {
+	case consts.TcpProxy:
+		return &TcpOutConf{}
+	case consts.UdpProxy:
+		return &UdpOutConf{}
+	case consts.HttpProxy:
+		return &HttpOutConf{}
+	case consts.HttpsProxy:
+		return &HttpsOutConf{}
+	case consts.StcpProxy:
+		return &StcpOutConf{}
+	case consts.XtcpProxy:
+		return &XtcpOutConf{}
+	default:
+		return nil
+	}
+}
+
+// Get proxy info.
+type ProxyStatsInfo struct {
+	Name            string      `json:"name"`
+	Conf            interface{} `json:"conf"`
+	TodayTrafficIn  int64       `json:"today_traffic_in"`
+	TodayTrafficOut int64       `json:"today_traffic_out"`
+	CurConns        int64       `json:"cur_conns"`
+	LastStartTime   string      `json:"last_start_time"`
+	LastCloseTime   string      `json:"last_close_time"`
+	Status          string      `json:"status"`
+}
+
+type GetProxyInfoResp struct {
+	GeneralResponse
+	Proxies []*ProxyStatsInfo `json:"proxies"`
+}
+
+// api/proxy/:type
+func (svr *Service) ApiProxyByType(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res GetProxyInfoResp
+	)
+	params := mux.Vars(r)
+	proxyType := params["type"]
+
+	defer func() {
+		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+		log.Info(r.URL.Path)
+		log.Info(r.URL.RawPath)
+	}()
+	log.Info("Http request: [%s]", r.URL.Path)
+
+	res.Proxies = svr.getProxyStatsByType(proxyType)
+
+	buf, _ = json.Marshal(&res)
+	w.Write(buf)
+
+}
+
+func (svr *Service) getProxyStatsByType(proxyType string) (proxyInfos []*ProxyStatsInfo) {
+	proxyStats := svr.statsCollector.GetProxiesByType(proxyType)
+	proxyInfos = make([]*ProxyStatsInfo, 0, len(proxyStats))
+	for _, ps := range proxyStats {
+		proxyInfo := &ProxyStatsInfo{}
+		if pxy, ok := svr.pxyManager.GetByName(ps.Name); ok {
+			content, err := json.Marshal(pxy.GetConf())
+			if err != nil {
+				log.Warn("marshal proxy [%s] conf info error: %v", ps.Name, err)
+				continue
+			}
+			proxyInfo.Conf = getConfByType(ps.Type)
+			if err = json.Unmarshal(content, &proxyInfo.Conf); err != nil {
+				log.Warn("unmarshal proxy [%s] conf info error: %v", ps.Name, err)
+				continue
+			}
+			proxyInfo.Status = consts.Online
+		} else {
+			proxyInfo.Status = consts.Offline
+		}
+		proxyInfo.Name = ps.Name
+		proxyInfo.TodayTrafficIn = ps.TodayTrafficIn
+		proxyInfo.TodayTrafficOut = ps.TodayTrafficOut
+		proxyInfo.CurConns = ps.CurConns
+		proxyInfo.LastStartTime = ps.LastStartTime
+		proxyInfo.LastCloseTime = ps.LastCloseTime
+		proxyInfos = append(proxyInfos, proxyInfo)
+	}
+	return
+}
+
+// Get proxy info by name.
+type GetProxyStatsResp struct {
+	GeneralResponse
+
+	Name            string      `json:"name"`
+	Conf            interface{} `json:"conf"`
+	TodayTrafficIn  int64       `json:"today_traffic_in"`
+	TodayTrafficOut int64       `json:"today_traffic_out"`
+	CurConns        int64       `json:"cur_conns"`
+	LastStartTime   string      `json:"last_start_time"`
+	LastCloseTime   string      `json:"last_close_time"`
+	Status          string      `json:"status"`
+}
+
+// api/proxy/:type/:name
+func (svr *Service) ApiProxyByTypeAndName(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res GetProxyStatsResp
+	)
+	params := mux.Vars(r)
+	proxyType := params["type"]
+	name := params["name"]
+
+	defer func() {
+		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+	}()
+	log.Info("Http request: [%s]", r.URL.Path)
+
+	res = svr.getProxyStatsByTypeAndName(proxyType, name)
+
+	buf, _ = json.Marshal(&res)
+	w.Write(buf)
+}
+
+func (svr *Service) getProxyStatsByTypeAndName(proxyType string, proxyName string) (proxyInfo GetProxyStatsResp) {
+	proxyInfo.Name = proxyName
+	ps := svr.statsCollector.GetProxiesByTypeAndName(proxyType, proxyName)
+	if ps == nil {
+		proxyInfo.Code = 1
+		proxyInfo.Msg = "no proxy info found"
+	} else {
+		if pxy, ok := svr.pxyManager.GetByName(proxyName); ok {
+			content, err := json.Marshal(pxy.GetConf())
+			if err != nil {
+				log.Warn("marshal proxy [%s] conf info error: %v", ps.Name, err)
+				proxyInfo.Code = 2
+				proxyInfo.Msg = "parse conf error"
+				return
+			}
+			proxyInfo.Conf = getConfByType(ps.Type)
+			if err = json.Unmarshal(content, &proxyInfo.Conf); err != nil {
+				log.Warn("unmarshal proxy [%s] conf info error: %v", ps.Name, err)
+				proxyInfo.Code = 2
+				proxyInfo.Msg = "parse conf error"
+				return
+			}
+			proxyInfo.Status = consts.Online
+		} else {
+			proxyInfo.Status = consts.Offline
+		}
+		proxyInfo.TodayTrafficIn = ps.TodayTrafficIn
+		proxyInfo.TodayTrafficOut = ps.TodayTrafficOut
+		proxyInfo.CurConns = ps.CurConns
+		proxyInfo.LastStartTime = ps.LastStartTime
+		proxyInfo.LastCloseTime = ps.LastCloseTime
+	}
+
+	return
+}
+
+// api/traffic/:name
+type GetProxyTrafficResp struct {
+	GeneralResponse
+
+	Name       string  `json:"name"`
+	TrafficIn  []int64 `json:"traffic_in"`
+	TrafficOut []int64 `json:"traffic_out"`
+}
+
+func (svr *Service) ApiProxyTraffic(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res GetProxyTrafficResp
+	)
+	params := mux.Vars(r)
+	name := params["name"]
+
+	defer func() {
+		log.Info("Http response [%s]: code [%d]", r.URL.Path, res.Code)
+	}()
+	log.Info("Http request: [%s]", r.URL.Path)
+
+	res.Name = name
+	proxyTrafficInfo := svr.statsCollector.GetProxyTraffic(name)
+	if proxyTrafficInfo == nil {
+		res.Code = 1
+		res.Msg = "no proxy info found"
+	} else {
+		res.TrafficIn = proxyTrafficInfo.TrafficIn
+		res.TrafficOut = proxyTrafficInfo.TrafficOut
+	}
+
+	buf, _ = json.Marshal(&res)
+	w.Write(buf)
+}

server/group/group.go

@@ -0,0 +1,26 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package group
+
+import (
+	"errors"
+)
+
+var (
+	ErrGroupAuthFailed    = errors.New("group auth failed")
+	ErrGroupParamsInvalid = errors.New("group params invalid")
+	ErrListenerClosed     = errors.New("group listener closed")
+	ErrGroupDifferentPort = errors.New("group should have same remote port")
+)

server/group/tcp.go

@@ -0,0 +1,204 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package group
+
+import (
+	"fmt"
+	"net"
+	"sync"
+
+	"github.com/fatedier/frp/server/ports"
+
+	gerr "github.com/fatedier/golib/errors"
+)
+
+type TcpGroupListener struct {
+	groupName string
+	group     *TcpGroup
+
+	addr    net.Addr
+	closeCh chan struct{}
+}
+
+func newTcpGroupListener(name string, group *TcpGroup, addr net.Addr) *TcpGroupListener {
+	return &TcpGroupListener{
+		groupName: name,
+		group:     group,
+		addr:      addr,
+		closeCh:   make(chan struct{}),
+	}
+}
+
+func (ln *TcpGroupListener) Accept() (c net.Conn, err error) {
+	var ok bool
+	select {
+	case <-ln.closeCh:
+		return nil, ErrListenerClosed
+	case c, ok = <-ln.group.Accept():
+		if !ok {
+			return nil, ErrListenerClosed
+		}
+		return c, nil
+	}
+}
+
+func (ln *TcpGroupListener) Addr() net.Addr {
+	return ln.addr
+}
+
+func (ln *TcpGroupListener) Close() (err error) {
+	close(ln.closeCh)
+	ln.group.CloseListener(ln)
+	return
+}
+
+type TcpGroup struct {
+	group    string
+	groupKey string
+	addr     string
+	port     int
+	realPort int
+
+	acceptCh chan net.Conn
+	index    uint64
+	tcpLn    net.Listener
+	lns      []*TcpGroupListener
+	ctl      *TcpGroupCtl
+	mu       sync.Mutex
+}
+
+func NewTcpGroup(ctl *TcpGroupCtl) *TcpGroup {
+	return &TcpGroup{
+		lns:      make([]*TcpGroupListener, 0),
+		ctl:      ctl,
+		acceptCh: make(chan net.Conn),
+	}
+}
+
+func (tg *TcpGroup) Listen(proxyName string, group string, groupKey string, addr string, port int) (ln *TcpGroupListener, realPort int, err error) {
+	tg.mu.Lock()
+	defer tg.mu.Unlock()
+	if len(tg.lns) == 0 {
+		realPort, err = tg.ctl.portManager.Acquire(proxyName, port)
+		if err != nil {
+			return
+		}
+		tcpLn, errRet := net.Listen("tcp", fmt.Sprintf("%s:%d", addr, port))
+		if errRet != nil {
+			err = errRet
+			return
+		}
+		ln = newTcpGroupListener(group, tg, tcpLn.Addr())
+
+		tg.group = group
+		tg.groupKey = groupKey
+		tg.addr = addr
+		tg.port = port
+		tg.realPort = realPort
+		tg.tcpLn = tcpLn
+		tg.lns = append(tg.lns, ln)
+		if tg.acceptCh == nil {
+			tg.acceptCh = make(chan net.Conn)
+		}
+		go tg.worker()
+	} else {
+		if tg.group != group || tg.addr != addr {
+			err = ErrGroupParamsInvalid
+			return
+		}
+		if tg.port != port {
+			err = ErrGroupDifferentPort
+			return
+		}
+		if tg.groupKey != groupKey {
+			err = ErrGroupAuthFailed
+			return
+		}
+		ln = newTcpGroupListener(group, tg, tg.lns[0].Addr())
+		realPort = tg.realPort
+		tg.lns = append(tg.lns, ln)
+	}
+	return
+}
+
+func (tg *TcpGroup) worker() {
+	for {
+		c, err := tg.tcpLn.Accept()
+		if err != nil {
+			return
+		}
+		err = gerr.PanicToError(func() {
+			tg.acceptCh <- c
+		})
+		if err != nil {
+			return
+		}
+	}
+}
+
+func (tg *TcpGroup) Accept() <-chan net.Conn {
+	return tg.acceptCh
+}
+
+func (tg *TcpGroup) CloseListener(ln *TcpGroupListener) {
+	tg.mu.Lock()
+	defer tg.mu.Unlock()
+	for i, tmpLn := range tg.lns {
+		if tmpLn == ln {
+			tg.lns = append(tg.lns[:i], tg.lns[i+1:]...)
+			break
+		}
+	}
+	if len(tg.lns) == 0 {
+		close(tg.acceptCh)
+		tg.tcpLn.Close()
+		tg.ctl.portManager.Release(tg.realPort)
+		tg.ctl.RemoveGroup(tg.group)
+	}
+}
+
+type TcpGroupCtl struct {
+	groups map[string]*TcpGroup
+
+	portManager *ports.PortManager
+	mu          sync.Mutex
+}
+
+func NewTcpGroupCtl(portManager *ports.PortManager) *TcpGroupCtl {
+	return &TcpGroupCtl{
+		groups:      make(map[string]*TcpGroup),
+		portManager: portManager,
+	}
+}
+
+func (tgc *TcpGroupCtl) Listen(proxyNanme string, group string, groupKey string,
+	addr string, port int) (l net.Listener, realPort int, err error) {
+
+	tgc.mu.Lock()
+	defer tgc.mu.Unlock()
+	if tcpGroup, ok := tgc.groups[group]; ok {
+		return tcpGroup.Listen(proxyNanme, group, groupKey, addr, port)
+	} else {
+		tcpGroup = NewTcpGroup(tgc)
+		tgc.groups[group] = tcpGroup
+		return tcpGroup.Listen(proxyNanme, group, groupKey, addr, port)
+	}
+}
+
+func (tgc *TcpGroupCtl) RemoveGroup(group string) {
+	tgc.mu.Lock()
+	defer tgc.mu.Unlock()
+	delete(tgc.groups, group)
+}

server/ports/ports.go

@@ -0,0 +1,180 @@
+package ports
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+)
+
+const (
+	MinPort                    = 1
+	MaxPort                    = 65535
+	MaxPortReservedDuration    = time.Duration(24) * time.Hour
+	CleanReservedPortsInterval = time.Hour
+)
+
+var (
+	ErrPortAlreadyUsed = errors.New("port already used")
+	ErrPortNotAllowed  = errors.New("port not allowed")
+	ErrPortUnAvailable = errors.New("port unavailable")
+	ErrNoAvailablePort = errors.New("no available port")
+)
+
+type PortCtx struct {
+	ProxyName  string
+	Port       int
+	Closed     bool
+	UpdateTime time.Time
+}
+
+type PortManager struct {
+	reservedPorts map[string]*PortCtx
+	usedPorts     map[int]*PortCtx
+	freePorts     map[int]struct{}
+
+	bindAddr string
+	netType  string
+	mu       sync.Mutex
+}
+
+func NewPortManager(netType string, bindAddr string, allowPorts map[int]struct{}) *PortManager {
+	pm := &PortManager{
+		reservedPorts: make(map[string]*PortCtx),
+		usedPorts:     make(map[int]*PortCtx),
+		freePorts:     make(map[int]struct{}),
+		bindAddr:      bindAddr,
+		netType:       netType,
+	}
+	if len(allowPorts) > 0 {
+		for port, _ := range allowPorts {
+			pm.freePorts[port] = struct{}{}
+		}
+	} else {
+		for i := MinPort; i <= MaxPort; i++ {
+			pm.freePorts[i] = struct{}{}
+		}
+	}
+	go pm.cleanReservedPortsWorker()
+	return pm
+}
+
+func (pm *PortManager) Acquire(name string, port int) (realPort int, err error) {
+	portCtx := &PortCtx{
+		ProxyName:  name,
+		Closed:     false,
+		UpdateTime: time.Now(),
+	}
+
+	var ok bool
+
+	pm.mu.Lock()
+	defer func() {
+		if err == nil {
+			portCtx.Port = realPort
+		}
+		pm.mu.Unlock()
+	}()
+
+	// check reserved ports first
+	if port == 0 {
+		if ctx, ok := pm.reservedPorts[name]; ok {
+			if pm.isPortAvailable(ctx.Port) {
+				realPort = ctx.Port
+				pm.usedPorts[realPort] = portCtx
+				pm.reservedPorts[name] = portCtx
+				delete(pm.freePorts, realPort)
+				return
+			}
+		}
+	}
+
+	if port == 0 {
+		// get random port
+		count := 0
+		maxTryTimes := 5
+		for k, _ := range pm.freePorts {
+			count++
+			if count > maxTryTimes {
+				break
+			}
+			if pm.isPortAvailable(k) {
+				realPort = k
+				pm.usedPorts[realPort] = portCtx
+				pm.reservedPorts[name] = portCtx
+				delete(pm.freePorts, realPort)
+				break
+			}
+		}
+		if realPort == 0 {
+			err = ErrNoAvailablePort
+		}
+	} else {
+		// specified port
+		if _, ok = pm.freePorts[port]; ok {
+			if pm.isPortAvailable(port) {
+				realPort = port
+				pm.usedPorts[realPort] = portCtx
+				pm.reservedPorts[name] = portCtx
+				delete(pm.freePorts, realPort)
+			} else {
+				err = ErrPortUnAvailable
+			}
+		} else {
+			if _, ok = pm.usedPorts[port]; ok {
+				err = ErrPortAlreadyUsed
+			} else {
+				err = ErrPortNotAllowed
+			}
+		}
+	}
+	return
+}
+
+func (pm *PortManager) isPortAvailable(port int) bool {
+	if pm.netType == "udp" {
+		addr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", pm.bindAddr, port))
+		if err != nil {
+			return false
+		}
+		l, err := net.ListenUDP("udp", addr)
+		if err != nil {
+			return false
+		}
+		l.Close()
+		return true
+	} else {
+		l, err := net.Listen(pm.netType, fmt.Sprintf("%s:%d", pm.bindAddr, port))
+		if err != nil {
+			return false
+		}
+		l.Close()
+		return true
+	}
+}
+
+func (pm *PortManager) Release(port int) {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	if ctx, ok := pm.usedPorts[port]; ok {
+		pm.freePorts[port] = struct{}{}
+		delete(pm.usedPorts, port)
+		ctx.Closed = true
+		ctx.UpdateTime = time.Now()
+	}
+}
+
+// Release reserved port if it isn't used in last 24 hours.
+func (pm *PortManager) cleanReservedPortsWorker() {
+	for {
+		time.Sleep(CleanReservedPortsInterval)
+		pm.mu.Lock()
+		for name, ctx := range pm.reservedPorts {
+			if ctx.Closed && time.Since(ctx.UpdateTime) > MaxPortReservedDuration {
+				delete(pm.reservedPorts, name)
+			}
+		}
+		pm.mu.Unlock()
+	}
+}

server/proxy/http.go

@@ -0,0 +1,138 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"io"
+	"strings"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/server/stats"
+	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/util"
+	"github.com/fatedier/frp/utils/vhost"
+
+	frpIo "github.com/fatedier/golib/io"
+)
+
+type HttpProxy struct {
+	BaseProxy
+	cfg *config.HttpProxyConf
+
+	closeFuncs []func()
+}
+
+func (pxy *HttpProxy) Run() (remoteAddr string, err error) {
+	routeConfig := vhost.VhostRouteConfig{
+		RewriteHost:  pxy.cfg.HostHeaderRewrite,
+		Headers:      pxy.cfg.Headers,
+		Username:     pxy.cfg.HttpUser,
+		Password:     pxy.cfg.HttpPwd,
+		CreateConnFn: pxy.GetRealConn,
+	}
+
+	locations := pxy.cfg.Locations
+	if len(locations) == 0 {
+		locations = []string{""}
+	}
+
+	addrs := make([]string, 0)
+	for _, domain := range pxy.cfg.CustomDomains {
+		routeConfig.Domain = domain
+		for _, location := range locations {
+			routeConfig.Location = location
+			err = pxy.rc.HttpReverseProxy.Register(routeConfig)
+			if err != nil {
+				return
+			}
+			tmpDomain := routeConfig.Domain
+			tmpLocation := routeConfig.Location
+			addrs = append(addrs, util.CanonicalAddr(tmpDomain, int(g.GlbServerCfg.VhostHttpPort)))
+			pxy.closeFuncs = append(pxy.closeFuncs, func() {
+				pxy.rc.HttpReverseProxy.UnRegister(tmpDomain, tmpLocation)
+			})
+			pxy.Info("http proxy listen for host [%s] location [%s]", routeConfig.Domain, routeConfig.Location)
+		}
+	}
+
+	if pxy.cfg.SubDomain != "" {
+		routeConfig.Domain = pxy.cfg.SubDomain + "." + g.GlbServerCfg.SubDomainHost
+		for _, location := range locations {
+			routeConfig.Location = location
+			err = pxy.rc.HttpReverseProxy.Register(routeConfig)
+			if err != nil {
+				return
+			}
+			tmpDomain := routeConfig.Domain
+			tmpLocation := routeConfig.Location
+			addrs = append(addrs, util.CanonicalAddr(tmpDomain, g.GlbServerCfg.VhostHttpPort))
+			pxy.closeFuncs = append(pxy.closeFuncs, func() {
+				pxy.rc.HttpReverseProxy.UnRegister(tmpDomain, tmpLocation)
+			})
+			pxy.Info("http proxy listen for host [%s] location [%s]", routeConfig.Domain, routeConfig.Location)
+		}
+	}
+	remoteAddr = strings.Join(addrs, ",")
+	return
+}
+
+func (pxy *HttpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *HttpProxy) GetRealConn() (workConn frpNet.Conn, err error) {
+	tmpConn, errRet := pxy.GetWorkConnFromPool()
+	if errRet != nil {
+		err = errRet
+		return
+	}
+
+	var rwc io.ReadWriteCloser = tmpConn
+	if pxy.cfg.UseEncryption {
+		rwc, err = frpIo.WithEncryption(rwc, []byte(g.GlbServerCfg.Token))
+		if err != nil {
+			pxy.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if pxy.cfg.UseCompression {
+		rwc = frpIo.WithCompression(rwc)
+	}
+	workConn = frpNet.WrapReadWriteCloserToConn(rwc, tmpConn)
+	workConn = frpNet.WrapStatsConn(workConn, pxy.updateStatsAfterClosedConn)
+	pxy.statsCollector.Mark(stats.TypeOpenConnection, &stats.OpenConnectionPayload{ProxyName: pxy.GetName()})
+	return
+}
+
+func (pxy *HttpProxy) updateStatsAfterClosedConn(totalRead, totalWrite int64) {
+	name := pxy.GetName()
+	pxy.statsCollector.Mark(stats.TypeCloseProxy, &stats.CloseConnectionPayload{ProxyName: name})
+	pxy.statsCollector.Mark(stats.TypeAddTrafficIn, &stats.AddTrafficInPayload{
+		ProxyName:    name,
+		TrafficBytes: totalWrite,
+	})
+	pxy.statsCollector.Mark(stats.TypeAddTrafficOut, &stats.AddTrafficOutPayload{
+		ProxyName:    name,
+		TrafficBytes: totalRead,
+	})
+}
+
+func (pxy *HttpProxy) Close() {
+	pxy.BaseProxy.Close()
+	for _, closeFn := range pxy.closeFuncs {
+		closeFn()
+	}
+}

server/proxy/https.go

@@ -0,0 +1,72 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"strings"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/utils/util"
+	"github.com/fatedier/frp/utils/vhost"
+)
+
+type HttpsProxy struct {
+	BaseProxy
+	cfg *config.HttpsProxyConf
+}
+
+func (pxy *HttpsProxy) Run() (remoteAddr string, err error) {
+	routeConfig := &vhost.VhostRouteConfig{}
+
+	addrs := make([]string, 0)
+	for _, domain := range pxy.cfg.CustomDomains {
+		routeConfig.Domain = domain
+		l, errRet := pxy.rc.VhostHttpsMuxer.Listen(routeConfig)
+		if errRet != nil {
+			err = errRet
+			return
+		}
+		l.AddLogPrefix(pxy.name)
+		pxy.Info("https proxy listen for host [%s]", routeConfig.Domain)
+		pxy.listeners = append(pxy.listeners, l)
+		addrs = append(addrs, util.CanonicalAddr(routeConfig.Domain, g.GlbServerCfg.VhostHttpsPort))
+	}
+
+	if pxy.cfg.SubDomain != "" {
+		routeConfig.Domain = pxy.cfg.SubDomain + "." + g.GlbServerCfg.SubDomainHost
+		l, errRet := pxy.rc.VhostHttpsMuxer.Listen(routeConfig)
+		if errRet != nil {
+			err = errRet
+			return
+		}
+		l.AddLogPrefix(pxy.name)
+		pxy.Info("https proxy listen for host [%s]", routeConfig.Domain)
+		pxy.listeners = append(pxy.listeners, l)
+		addrs = append(addrs, util.CanonicalAddr(routeConfig.Domain, int(g.GlbServerCfg.VhostHttpsPort)))
+	}
+
+	pxy.startListenHandler(pxy, HandleUserTcpConnection)
+	remoteAddr = strings.Join(addrs, ",")
+	return
+}
+
+func (pxy *HttpsProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *HttpsProxy) Close() {
+	pxy.BaseProxy.Close()
+}

server/proxy/proxy.go

@@ -0,0 +1,250 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"fmt"
+	"io"
+	"sync"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/server/controller"
+	"github.com/fatedier/frp/server/stats"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+
+	frpIo "github.com/fatedier/golib/io"
+)
+
+type GetWorkConnFn func() (frpNet.Conn, error)
+
+type Proxy interface {
+	Run() (remoteAddr string, err error)
+	GetName() string
+	GetConf() config.ProxyConf
+	GetWorkConnFromPool() (workConn frpNet.Conn, err error)
+	GetUsedPortsNum() int
+	Close()
+	log.Logger
+}
+
+type BaseProxy struct {
+	name           string
+	rc             *controller.ResourceController
+	statsCollector stats.Collector
+	listeners      []frpNet.Listener
+	usedPortsNum   int
+	poolCount      int
+	getWorkConnFn  GetWorkConnFn
+
+	mu sync.RWMutex
+	log.Logger
+}
+
+func (pxy *BaseProxy) GetName() string {
+	return pxy.name
+}
+
+func (pxy *BaseProxy) GetUsedPortsNum() int {
+	return pxy.usedPortsNum
+}
+
+func (pxy *BaseProxy) Close() {
+	pxy.Info("proxy closing")
+	for _, l := range pxy.listeners {
+		l.Close()
+	}
+}
+
+func (pxy *BaseProxy) GetWorkConnFromPool() (workConn frpNet.Conn, err error) {
+	// try all connections from the pool
+	for i := 0; i < pxy.poolCount+1; i++ {
+		if workConn, err = pxy.getWorkConnFn(); err != nil {
+			pxy.Warn("failed to get work connection: %v", err)
+			return
+		}
+		pxy.Info("get a new work connection: [%s]", workConn.RemoteAddr().String())
+		workConn.AddLogPrefix(pxy.GetName())
+
+		err := msg.WriteMsg(workConn, &msg.StartWorkConn{
+			ProxyName: pxy.GetName(),
+		})
+		if err != nil {
+			workConn.Warn("failed to send message to work connection from pool: %v, times: %d", err, i)
+			workConn.Close()
+		} else {
+			break
+		}
+	}
+
+	if err != nil {
+		pxy.Error("try to get work connection failed in the end")
+		return
+	}
+	return
+}
+
+// startListenHandler start a goroutine handler for each listener.
+// p: p will just be passed to handler(Proxy, frpNet.Conn).
+// handler: each proxy type can set different handler function to deal with connections accepted from listeners.
+func (pxy *BaseProxy) startListenHandler(p Proxy, handler func(Proxy, frpNet.Conn, stats.Collector)) {
+	for _, listener := range pxy.listeners {
+		go func(l frpNet.Listener) {
+			for {
+				// block
+				// if listener is closed, err returned
+				c, err := l.Accept()
+				if err != nil {
+					pxy.Info("listener is closed")
+					return
+				}
+				pxy.Debug("get a user connection [%s]", c.RemoteAddr().String())
+				go handler(p, c, pxy.statsCollector)
+			}
+		}(listener)
+	}
+}
+
+func NewProxy(runId string, rc *controller.ResourceController, statsCollector stats.Collector, poolCount int,
+	getWorkConnFn GetWorkConnFn, pxyConf config.ProxyConf) (pxy Proxy, err error) {
+
+	basePxy := BaseProxy{
+		name:           pxyConf.GetBaseInfo().ProxyName,
+		rc:             rc,
+		statsCollector: statsCollector,
+		listeners:      make([]frpNet.Listener, 0),
+		poolCount:      poolCount,
+		getWorkConnFn:  getWorkConnFn,
+		Logger:         log.NewPrefixLogger(runId),
+	}
+	switch cfg := pxyConf.(type) {
+	case *config.TcpProxyConf:
+		basePxy.usedPortsNum = 1
+		pxy = &TcpProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	case *config.HttpProxyConf:
+		pxy = &HttpProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	case *config.HttpsProxyConf:
+		pxy = &HttpsProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	case *config.UdpProxyConf:
+		basePxy.usedPortsNum = 1
+		pxy = &UdpProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	case *config.StcpProxyConf:
+		pxy = &StcpProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	case *config.XtcpProxyConf:
+		pxy = &XtcpProxy{
+			BaseProxy: basePxy,
+			cfg:       cfg,
+		}
+	default:
+		return pxy, fmt.Errorf("proxy type not support")
+	}
+	pxy.AddLogPrefix(pxy.GetName())
+	return
+}
+
+// HandleUserTcpConnection is used for incoming tcp user connections.
+// It can be used for tcp, http, https type.
+func HandleUserTcpConnection(pxy Proxy, userConn frpNet.Conn, statsCollector stats.Collector) {
+	defer userConn.Close()
+
+	// try all connections from the pool
+	workConn, err := pxy.GetWorkConnFromPool()
+	if err != nil {
+		return
+	}
+	defer workConn.Close()
+
+	var local io.ReadWriteCloser = workConn
+	cfg := pxy.GetConf().GetBaseInfo()
+	if cfg.UseEncryption {
+		local, err = frpIo.WithEncryption(local, []byte(g.GlbServerCfg.Token))
+		if err != nil {
+			pxy.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if cfg.UseCompression {
+		local = frpIo.WithCompression(local)
+	}
+	pxy.Debug("join connections, workConn(l[%s] r[%s]) userConn(l[%s] r[%s])", workConn.LocalAddr().String(),
+		workConn.RemoteAddr().String(), userConn.LocalAddr().String(), userConn.RemoteAddr().String())
+
+	statsCollector.Mark(stats.TypeOpenConnection, &stats.OpenConnectionPayload{ProxyName: pxy.GetName()})
+	inCount, outCount := frpIo.Join(local, userConn)
+	statsCollector.Mark(stats.TypeCloseConnection, &stats.CloseConnectionPayload{ProxyName: pxy.GetName()})
+	statsCollector.Mark(stats.TypeAddTrafficIn, &stats.AddTrafficInPayload{
+		ProxyName:    pxy.GetName(),
+		TrafficBytes: inCount,
+	})
+	statsCollector.Mark(stats.TypeAddTrafficOut, &stats.AddTrafficOutPayload{
+		ProxyName:    pxy.GetName(),
+		TrafficBytes: outCount,
+	})
+	pxy.Debug("join connections closed")
+}
+
+type ProxyManager struct {
+	// proxies indexed by proxy name
+	pxys map[string]Proxy
+
+	mu sync.RWMutex
+}
+
+func NewProxyManager() *ProxyManager {
+	return &ProxyManager{
+		pxys: make(map[string]Proxy),
+	}
+}
+
+func (pm *ProxyManager) Add(name string, pxy Proxy) error {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	if _, ok := pm.pxys[name]; ok {
+		return fmt.Errorf("proxy name [%s] is already in use", name)
+	}
+
+	pm.pxys[name] = pxy
+	return nil
+}
+
+func (pm *ProxyManager) Del(name string) {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	delete(pm.pxys, name)
+}
+
+func (pm *ProxyManager) GetByName(name string) (pxy Proxy, ok bool) {
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	pxy, ok = pm.pxys[name]
+	return
+}

server/proxy/stcp.go

@@ -0,0 +1,47 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"github.com/fatedier/frp/models/config"
+)
+
+type StcpProxy struct {
+	BaseProxy
+	cfg *config.StcpProxyConf
+}
+
+func (pxy *StcpProxy) Run() (remoteAddr string, err error) {
+	listener, errRet := pxy.rc.VisitorManager.Listen(pxy.GetName(), pxy.cfg.Sk)
+	if errRet != nil {
+		err = errRet
+		return
+	}
+	listener.AddLogPrefix(pxy.name)
+	pxy.listeners = append(pxy.listeners, listener)
+	pxy.Info("stcp proxy custom listen success")
+
+	pxy.startListenHandler(pxy, HandleUserTcpConnection)
+	return
+}
+
+func (pxy *StcpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *StcpProxy) Close() {
+	pxy.BaseProxy.Close()
+	pxy.rc.VisitorManager.CloseListener(pxy.GetName())
+}

server/proxy/tcp.go

@@ -0,0 +1,84 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"fmt"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	frpNet "github.com/fatedier/frp/utils/net"
+)
+
+type TcpProxy struct {
+	BaseProxy
+	cfg *config.TcpProxyConf
+
+	realPort int
+}
+
+func (pxy *TcpProxy) Run() (remoteAddr string, err error) {
+	if pxy.cfg.Group != "" {
+		l, realPort, errRet := pxy.rc.TcpGroupCtl.Listen(pxy.name, pxy.cfg.Group, pxy.cfg.GroupKey, g.GlbServerCfg.ProxyBindAddr, pxy.cfg.RemotePort)
+		if errRet != nil {
+			err = errRet
+			return
+		}
+		defer func() {
+			if err != nil {
+				l.Close()
+			}
+		}()
+		pxy.realPort = realPort
+		listener := frpNet.WrapLogListener(l)
+		listener.AddLogPrefix(pxy.name)
+		pxy.listeners = append(pxy.listeners, listener)
+		pxy.Info("tcp proxy listen port [%d] in group [%s]", pxy.cfg.RemotePort, pxy.cfg.Group)
+	} else {
+		pxy.realPort, err = pxy.rc.TcpPortManager.Acquire(pxy.name, pxy.cfg.RemotePort)
+		if err != nil {
+			return
+		}
+		defer func() {
+			if err != nil {
+				pxy.rc.TcpPortManager.Release(pxy.realPort)
+			}
+		}()
+		listener, errRet := frpNet.ListenTcp(g.GlbServerCfg.ProxyBindAddr, pxy.realPort)
+		if errRet != nil {
+			err = errRet
+			return
+		}
+		listener.AddLogPrefix(pxy.name)
+		pxy.listeners = append(pxy.listeners, listener)
+		pxy.Info("tcp proxy listen port [%d]", pxy.cfg.RemotePort)
+	}
+
+	pxy.cfg.RemotePort = pxy.realPort
+	remoteAddr = fmt.Sprintf(":%d", pxy.realPort)
+	pxy.startListenHandler(pxy, HandleUserTcpConnection)
+	return
+}
+
+func (pxy *TcpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *TcpProxy) Close() {
+	pxy.BaseProxy.Close()
+	if pxy.cfg.Group == "" {
+		pxy.rc.TcpPortManager.Release(pxy.realPort)
+	}
+}

server/proxy/udp.go

@@ -0,0 +1,225 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/models/proto/udp"
+	"github.com/fatedier/frp/server/stats"
+
+	"github.com/fatedier/golib/errors"
+)
+
+type UdpProxy struct {
+	BaseProxy
+	cfg *config.UdpProxyConf
+
+	realPort int
+
+	// udpConn is the listener of udp packages
+	udpConn *net.UDPConn
+
+	// there are always only one workConn at the same time
+	// get another one if it closed
+	workConn net.Conn
+
+	// sendCh is used for sending packages to workConn
+	sendCh chan *msg.UdpPacket
+
+	// readCh is used for reading packages from workConn
+	readCh chan *msg.UdpPacket
+
+	// checkCloseCh is used for watching if workConn is closed
+	checkCloseCh chan int
+
+	isClosed bool
+}
+
+func (pxy *UdpProxy) Run() (remoteAddr string, err error) {
+	pxy.realPort, err = pxy.rc.UdpPortManager.Acquire(pxy.name, pxy.cfg.RemotePort)
+	if err != nil {
+		return
+	}
+	defer func() {
+		if err != nil {
+			pxy.rc.UdpPortManager.Release(pxy.realPort)
+		}
+	}()
+
+	remoteAddr = fmt.Sprintf(":%d", pxy.realPort)
+	pxy.cfg.RemotePort = pxy.realPort
+	addr, errRet := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", g.GlbServerCfg.ProxyBindAddr, pxy.realPort))
+	if errRet != nil {
+		err = errRet
+		return
+	}
+	udpConn, errRet := net.ListenUDP("udp", addr)
+	if errRet != nil {
+		err = errRet
+		pxy.Warn("listen udp port error: %v", err)
+		return
+	}
+	pxy.Info("udp proxy listen port [%d]", pxy.cfg.RemotePort)
+
+	pxy.udpConn = udpConn
+	pxy.sendCh = make(chan *msg.UdpPacket, 1024)
+	pxy.readCh = make(chan *msg.UdpPacket, 1024)
+	pxy.checkCloseCh = make(chan int)
+
+	// read message from workConn, if it returns any error, notify proxy to start a new workConn
+	workConnReaderFn := func(conn net.Conn) {
+		for {
+			var (
+				rawMsg msg.Message
+				errRet error
+			)
+			pxy.Trace("loop waiting message from udp workConn")
+			// client will send heartbeat in workConn for keeping alive
+			conn.SetReadDeadline(time.Now().Add(time.Duration(60) * time.Second))
+			if rawMsg, errRet = msg.ReadMsg(conn); errRet != nil {
+				pxy.Warn("read from workConn for udp error: %v", errRet)
+				conn.Close()
+				// notify proxy to start a new work connection
+				// ignore error here, it means the proxy is closed
+				errors.PanicToError(func() {
+					pxy.checkCloseCh <- 1
+				})
+				return
+			}
+			conn.SetReadDeadline(time.Time{})
+			switch m := rawMsg.(type) {
+			case *msg.Ping:
+				pxy.Trace("udp work conn get ping message")
+				continue
+			case *msg.UdpPacket:
+				if errRet := errors.PanicToError(func() {
+					pxy.Trace("get udp message from workConn: %s", m.Content)
+					pxy.readCh <- m
+					pxy.statsCollector.Mark(stats.TypeAddTrafficOut, &stats.AddTrafficOutPayload{
+						ProxyName:    pxy.GetName(),
+						TrafficBytes: int64(len(m.Content)),
+					})
+				}); errRet != nil {
+					conn.Close()
+					pxy.Info("reader goroutine for udp work connection closed")
+					return
+				}
+			}
+		}
+	}
+
+	// send message to workConn
+	workConnSenderFn := func(conn net.Conn, ctx context.Context) {
+		var errRet error
+		for {
+			select {
+			case udpMsg, ok := <-pxy.sendCh:
+				if !ok {
+					pxy.Info("sender goroutine for udp work connection closed")
+					return
+				}
+				if errRet = msg.WriteMsg(conn, udpMsg); errRet != nil {
+					pxy.Info("sender goroutine for udp work connection closed: %v", errRet)
+					conn.Close()
+					return
+				} else {
+					pxy.Trace("send message to udp workConn: %s", udpMsg.Content)
+					pxy.statsCollector.Mark(stats.TypeAddTrafficIn, &stats.AddTrafficInPayload{
+						ProxyName:    pxy.GetName(),
+						TrafficBytes: int64(len(udpMsg.Content)),
+					})
+					continue
+				}
+			case <-ctx.Done():
+				pxy.Info("sender goroutine for udp work connection closed")
+				return
+			}
+		}
+	}
+
+	go func() {
+		// Sleep a while for waiting control send the NewProxyResp to client.
+		time.Sleep(500 * time.Millisecond)
+		for {
+			workConn, err := pxy.GetWorkConnFromPool()
+			if err != nil {
+				time.Sleep(1 * time.Second)
+				// check if proxy is closed
+				select {
+				case _, ok := <-pxy.checkCloseCh:
+					if !ok {
+						return
+					}
+				default:
+				}
+				continue
+			}
+			// close the old workConn and replac it with a new one
+			if pxy.workConn != nil {
+				pxy.workConn.Close()
+			}
+			pxy.workConn = workConn
+			ctx, cancel := context.WithCancel(context.Background())
+			go workConnReaderFn(workConn)
+			go workConnSenderFn(workConn, ctx)
+			_, ok := <-pxy.checkCloseCh
+			cancel()
+			if !ok {
+				return
+			}
+		}
+	}()
+
+	// Read from user connections and send wrapped udp message to sendCh (forwarded by workConn).
+	// Client will transfor udp message to local udp service and waiting for response for a while.
+	// Response will be wrapped to be forwarded by work connection to server.
+	// Close readCh and sendCh at the end.
+	go func() {
+		udp.ForwardUserConn(udpConn, pxy.readCh, pxy.sendCh)
+		pxy.Close()
+	}()
+	return remoteAddr, nil
+}
+
+func (pxy *UdpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *UdpProxy) Close() {
+	pxy.mu.Lock()
+	defer pxy.mu.Unlock()
+	if !pxy.isClosed {
+		pxy.isClosed = true
+
+		pxy.BaseProxy.Close()
+		if pxy.workConn != nil {
+			pxy.workConn.Close()
+		}
+		pxy.udpConn.Close()
+
+		// all channels only closed here
+		close(pxy.checkCloseCh)
+		close(pxy.readCh)
+		close(pxy.sendCh)
+	}
+	pxy.rc.UdpPortManager.Release(pxy.realPort)
+}

server/proxy/xtcp.go

@@ -0,0 +1,73 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"fmt"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/msg"
+
+	"github.com/fatedier/golib/errors"
+)
+
+type XtcpProxy struct {
+	BaseProxy
+	cfg *config.XtcpProxyConf
+
+	closeCh chan struct{}
+}
+
+func (pxy *XtcpProxy) Run() (remoteAddr string, err error) {
+	if pxy.rc.NatHoleController == nil {
+		pxy.Error("udp port for xtcp is not specified.")
+		err = fmt.Errorf("xtcp is not supported in frps")
+		return
+	}
+	sidCh := pxy.rc.NatHoleController.ListenClient(pxy.GetName(), pxy.cfg.Sk)
+	go func() {
+		for {
+			select {
+			case <-pxy.closeCh:
+				break
+			case sid := <-sidCh:
+				workConn, errRet := pxy.GetWorkConnFromPool()
+				if errRet != nil {
+					continue
+				}
+				m := &msg.NatHoleSid{
+					Sid: sid,
+				}
+				errRet = msg.WriteMsg(workConn, m)
+				if errRet != nil {
+					pxy.Warn("write nat hole sid package error, %v", errRet)
+				}
+			}
+		}
+	}()
+	return
+}
+
+func (pxy *XtcpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *XtcpProxy) Close() {
+	pxy.BaseProxy.Close()
+	pxy.rc.NatHoleController.CloseClient(pxy.GetName())
+	errors.PanicToError(func() {
+		close(pxy.closeCh)
+	})
+}

server/service.go

@@ -0,0 +1,375 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/fatedier/frp/assets"
+	"github.com/fatedier/frp/g"
+	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/models/nathole"
+	"github.com/fatedier/frp/server/controller"
+	"github.com/fatedier/frp/server/group"
+	"github.com/fatedier/frp/server/ports"
+	"github.com/fatedier/frp/server/proxy"
+	"github.com/fatedier/frp/server/stats"
+	"github.com/fatedier/frp/utils/log"
+	frpNet "github.com/fatedier/frp/utils/net"
+	"github.com/fatedier/frp/utils/util"
+	"github.com/fatedier/frp/utils/version"
+	"github.com/fatedier/frp/utils/vhost"
+
+	"github.com/fatedier/golib/net/mux"
+	fmux "github.com/hashicorp/yamux"
+)
+
+const (
+	connReadTimeout time.Duration = 10 * time.Second
+)
+
+var ServerService *Service
+
+// Server service
+type Service struct {
+	// Dispatch connections to different handlers listen on same port
+	muxer *mux.Mux
+
+	// Accept connections from client
+	listener frpNet.Listener
+
+	// Accept connections using kcp
+	kcpListener frpNet.Listener
+
+	// Accept connections using websocket
+	websocketListener frpNet.Listener
+
+	// Manage all controllers
+	ctlManager *ControlManager
+
+	// Manage all proxies
+	pxyManager *proxy.ProxyManager
+
+	// All resource managers and controllers
+	rc *controller.ResourceController
+
+	// stats collector to store server and proxies stats info
+	statsCollector stats.Collector
+}
+
+func NewService() (svr *Service, err error) {
+	cfg := &g.GlbServerCfg.ServerCommonConf
+	svr = &Service{
+		ctlManager: NewControlManager(),
+		pxyManager: proxy.NewProxyManager(),
+		rc: &controller.ResourceController{
+			VisitorManager: controller.NewVisitorManager(),
+			TcpPortManager: ports.NewPortManager("tcp", cfg.ProxyBindAddr, cfg.AllowPorts),
+			UdpPortManager: ports.NewPortManager("udp", cfg.ProxyBindAddr, cfg.AllowPorts),
+		},
+	}
+
+	// Init group controller
+	svr.rc.TcpGroupCtl = group.NewTcpGroupCtl(svr.rc.TcpPortManager)
+
+	// Init assets.
+	err = assets.Load(cfg.AssetsDir)
+	if err != nil {
+		err = fmt.Errorf("Load assets error: %v", err)
+		return
+	}
+
+	var (
+		httpMuxOn  bool
+		httpsMuxOn bool
+	)
+	if cfg.BindAddr == cfg.ProxyBindAddr {
+		if cfg.BindPort == cfg.VhostHttpPort {
+			httpMuxOn = true
+		}
+		if cfg.BindPort == cfg.VhostHttpsPort {
+			httpsMuxOn = true
+		}
+	}
+
+	// Listen for accepting connections from client.
+	ln, err := net.Listen("tcp", fmt.Sprintf("%s:%d", cfg.BindAddr, cfg.BindPort))
+	if err != nil {
+		err = fmt.Errorf("Create server listener error, %v", err)
+		return
+	}
+
+	svr.muxer = mux.NewMux(ln)
+	go svr.muxer.Serve()
+	ln = svr.muxer.DefaultListener()
+
+	svr.listener = frpNet.WrapLogListener(ln)
+	log.Info("frps tcp listen on %s:%d", cfg.BindAddr, cfg.BindPort)
+
+	// Listen for accepting connections from client using kcp protocol.
+	if cfg.KcpBindPort > 0 {
+		svr.kcpListener, err = frpNet.ListenKcp(cfg.BindAddr, cfg.KcpBindPort)
+		if err != nil {
+			err = fmt.Errorf("Listen on kcp address udp [%s:%d] error: %v", cfg.BindAddr, cfg.KcpBindPort, err)
+			return
+		}
+		log.Info("frps kcp listen on udp %s:%d", cfg.BindAddr, cfg.KcpBindPort)
+	}
+
+	// Listen for accepting connections from client using websocket protocol.
+	websocketPrefix := []byte("GET " + frpNet.FrpWebsocketPath)
+	websocketLn := svr.muxer.Listen(0, uint32(len(websocketPrefix)), func(data []byte) bool {
+		return bytes.Equal(data, websocketPrefix)
+	})
+	svr.websocketListener = frpNet.NewWebsocketListener(websocketLn)
+
+	// Create http vhost muxer.
+	if cfg.VhostHttpPort > 0 {
+		rp := vhost.NewHttpReverseProxy(vhost.HttpReverseProxyOptions{
+			ResponseHeaderTimeoutS: cfg.VhostHttpTimeout,
+		})
+		svr.rc.HttpReverseProxy = rp
+
+		address := fmt.Sprintf("%s:%d", cfg.ProxyBindAddr, cfg.VhostHttpPort)
+		server := &http.Server{
+			Addr:    address,
+			Handler: rp,
+		}
+		var l net.Listener
+		if httpMuxOn {
+			l = svr.muxer.ListenHttp(1)
+		} else {
+			l, err = net.Listen("tcp", address)
+			if err != nil {
+				err = fmt.Errorf("Create vhost http listener error, %v", err)
+				return
+			}
+		}
+		go server.Serve(l)
+		log.Info("http service listen on %s:%d", cfg.ProxyBindAddr, cfg.VhostHttpPort)
+	}
+
+	// Create https vhost muxer.
+	if cfg.VhostHttpsPort > 0 {
+		var l net.Listener
+		if httpsMuxOn {
+			l = svr.muxer.ListenHttps(1)
+		} else {
+			l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", cfg.ProxyBindAddr, cfg.VhostHttpsPort))
+			if err != nil {
+				err = fmt.Errorf("Create server listener error, %v", err)
+				return
+			}
+		}
+
+		svr.rc.VhostHttpsMuxer, err = vhost.NewHttpsMuxer(frpNet.WrapLogListener(l), 30*time.Second)
+		if err != nil {
+			err = fmt.Errorf("Create vhost httpsMuxer error, %v", err)
+			return
+		}
+		log.Info("https service listen on %s:%d", cfg.ProxyBindAddr, cfg.VhostHttpsPort)
+	}
+
+	// Create nat hole controller.
+	if cfg.BindUdpPort > 0 {
+		var nc *nathole.NatHoleController
+		addr := fmt.Sprintf("%s:%d", cfg.BindAddr, cfg.BindUdpPort)
+		nc, err = nathole.NewNatHoleController(addr)
+		if err != nil {
+			err = fmt.Errorf("Create nat hole controller error, %v", err)
+			return
+		}
+		svr.rc.NatHoleController = nc
+		log.Info("nat hole udp service listen on %s:%d", cfg.BindAddr, cfg.BindUdpPort)
+	}
+
+	var statsEnable bool
+	// Create dashboard web server.
+	if cfg.DashboardPort > 0 {
+		err = svr.RunDashboardServer(cfg.DashboardAddr, cfg.DashboardPort)
+		if err != nil {
+			err = fmt.Errorf("Create dashboard web server error, %v", err)
+			return
+		}
+		log.Info("Dashboard listen on %s:%d", cfg.DashboardAddr, cfg.DashboardPort)
+		statsEnable = true
+	}
+
+	svr.statsCollector = stats.NewInternalCollector(statsEnable)
+	return
+}
+
+func (svr *Service) Run() {
+	if svr.rc.NatHoleController != nil {
+		go svr.rc.NatHoleController.Run()
+	}
+	if g.GlbServerCfg.KcpBindPort > 0 {
+		go svr.HandleListener(svr.kcpListener)
+	}
+
+	go svr.HandleListener(svr.websocketListener)
+
+	svr.HandleListener(svr.listener)
+}
+
+func (svr *Service) HandleListener(l frpNet.Listener) {
+	// Listen for incoming connections from client.
+	for {
+		c, err := l.Accept()
+		if err != nil {
+			log.Warn("Listener for incoming connections from client closed")
+			return
+		}
+
+		// Start a new goroutine for dealing connections.
+		go func(frpConn frpNet.Conn) {
+			dealFn := func(conn frpNet.Conn) {
+				var rawMsg msg.Message
+				conn.SetReadDeadline(time.Now().Add(connReadTimeout))
+				if rawMsg, err = msg.ReadMsg(conn); err != nil {
+					log.Trace("Failed to read message: %v", err)
+					conn.Close()
+					return
+				}
+				conn.SetReadDeadline(time.Time{})
+
+				switch m := rawMsg.(type) {
+				case *msg.Login:
+					err = svr.RegisterControl(conn, m)
+					// If login failed, send error message there.
+					// Otherwise send success message in control's work goroutine.
+					if err != nil {
+						conn.Warn("%v", err)
+						msg.WriteMsg(conn, &msg.LoginResp{
+							Version: version.Full(),
+							Error:   err.Error(),
+						})
+						conn.Close()
+					}
+				case *msg.NewWorkConn:
+					svr.RegisterWorkConn(conn, m)
+				case *msg.NewVisitorConn:
+					if err = svr.RegisterVisitorConn(conn, m); err != nil {
+						conn.Warn("%v", err)
+						msg.WriteMsg(conn, &msg.NewVisitorConnResp{
+							ProxyName: m.ProxyName,
+							Error:     err.Error(),
+						})
+						conn.Close()
+					} else {
+						msg.WriteMsg(conn, &msg.NewVisitorConnResp{
+							ProxyName: m.ProxyName,
+							Error:     "",
+						})
+					}
+				default:
+					log.Warn("Error message type for the new connection [%s]", conn.RemoteAddr().String())
+					conn.Close()
+				}
+			}
+
+			if g.GlbServerCfg.TcpMux {
+				fmuxCfg := fmux.DefaultConfig()
+				fmuxCfg.KeepAliveInterval = 20 * time.Second
+				fmuxCfg.LogOutput = ioutil.Discard
+				session, err := fmux.Server(frpConn, fmuxCfg)
+				if err != nil {
+					log.Warn("Failed to create mux connection: %v", err)
+					frpConn.Close()
+					return
+				}
+
+				for {
+					stream, err := session.AcceptStream()
+					if err != nil {
+						log.Debug("Accept new mux stream error: %v", err)
+						session.Close()
+						return
+					}
+					wrapConn := frpNet.WrapConn(stream)
+					go dealFn(wrapConn)
+				}
+			} else {
+				dealFn(frpConn)
+			}
+		}(c)
+	}
+}
+
+func (svr *Service) RegisterControl(ctlConn frpNet.Conn, loginMsg *msg.Login) (err error) {
+	ctlConn.Info("client login info: ip [%s] version [%s] hostname [%s] os [%s] arch [%s]",
+		ctlConn.RemoteAddr().String(), loginMsg.Version, loginMsg.Hostname, loginMsg.Os, loginMsg.Arch)
+
+	// Check client version.
+	if ok, msg := version.Compat(loginMsg.Version); !ok {
+		err = fmt.Errorf("%s", msg)
+		return
+	}
+
+	// Check auth.
+	if util.GetAuthKey(g.GlbServerCfg.Token, loginMsg.Timestamp) != loginMsg.PrivilegeKey {
+		err = fmt.Errorf("authorization failed")
+		return
+	}
+
+	// If client's RunId is empty, it's a new client, we just create a new controller.
+	// Otherwise, we check if there is one controller has the same run id. If so, we release previous controller and start new one.
+	if loginMsg.RunId == "" {
+		loginMsg.RunId, err = util.RandId()
+		if err != nil {
+			return
+		}
+	}
+
+	ctl := NewControl(svr.rc, svr.pxyManager, svr.statsCollector, ctlConn, loginMsg)
+
+	if oldCtl := svr.ctlManager.Add(loginMsg.RunId, ctl); oldCtl != nil {
+		oldCtl.allShutdown.WaitDone()
+	}
+
+	ctlConn.AddLogPrefix(loginMsg.RunId)
+	ctl.Start()
+
+	// for statistics
+	svr.statsCollector.Mark(stats.TypeNewClient, &stats.NewClientPayload{})
+
+	go func() {
+		// block until control closed
+		ctl.WaitClosed()
+		svr.ctlManager.Del(loginMsg.RunId, ctl)
+	}()
+	return
+}
+
+// RegisterWorkConn register a new work connection to control and proxies need it.
+func (svr *Service) RegisterWorkConn(workConn frpNet.Conn, newMsg *msg.NewWorkConn) {
+	ctl, exist := svr.ctlManager.GetById(newMsg.RunId)
+	if !exist {
+		workConn.Warn("No client control found for run id [%s]", newMsg.RunId)
+		return
+	}
+	ctl.RegisterWorkConn(workConn)
+	return
+}
+
+func (svr *Service) RegisterVisitorConn(visitorConn frpNet.Conn, newMsg *msg.NewVisitorConn) error {
+	return svr.rc.VisitorManager.NewConn(newMsg.ProxyName, visitorConn, newMsg.Timestamp, newMsg.SignKey,
+		newMsg.UseEncryption, newMsg.UseCompression)
+}

server/stats/internal.go

@@ -0,0 +1,277 @@
+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package stats
+
+import (
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/utils/log"
+	"github.com/fatedier/frp/utils/metric"
+)
+
+type internalCollector struct {
+	enable bool
+	info   *ServerStatistics
+	mu     sync.Mutex
+}
+
+func NewInternalCollector(enable bool) Collector {
+	return &internalCollector{
+		enable: enable,
+		info: &ServerStatistics{
+			TotalTrafficIn:  metric.NewDateCounter(ReserveDays),
+			TotalTrafficOut: metric.NewDateCounter(ReserveDays),
+			CurConns:        metric.NewCounter(),
+
+			ClientCounts:    metric.NewCounter(),
+			ProxyTypeCounts: make(map[string]metric.Counter),
+
+			ProxyStatistics: make(map[string]*ProxyStatistics),
+		},
+	}
+}
+
+func (collector *internalCollector) Run() error {
+	go func() {
+		for {
+			time.Sleep(12 * time.Hour)
+			log.Debug("start to clear useless proxy statistics data...")
+			collector.ClearUselessInfo()
+			log.Debug("finish to clear useless proxy statistics data")
+		}
+	}()
+	return nil
+}
+
+func (collector *internalCollector) ClearUselessInfo() {
+	// To check if there are proxies that closed than 7 days and drop them.
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	for name, data := range collector.info.ProxyStatistics {
+		if !data.LastCloseTime.IsZero() && time.Since(data.LastCloseTime) > time.Duration(7*24)*time.Hour {
+			delete(collector.info.ProxyStatistics, name)
+			log.Trace("clear proxy [%s]'s statistics data, lastCloseTime: [%s]", name, data.LastCloseTime.String())
+		}
+	}
+}
+
+func (collector *internalCollector) Mark(statsType StatsType, payload interface{}) {
+	if !collector.enable {
+		return
+	}
+
+	switch v := payload.(type) {
+	case *NewClientPayload:
+		collector.newClient(v)
+	case *CloseClientPayload:
+		collector.closeClient(v)
+	case *NewProxyPayload:
+		collector.newProxy(v)
+	case *CloseProxyPayload:
+		collector.closeProxy(v)
+	case *OpenConnectionPayload:
+		collector.openConnection(v)
+	case *CloseConnectionPayload:
+		collector.closeConnection(v)
+	case *AddTrafficInPayload:
+		collector.addTrafficIn(v)
+	case *AddTrafficOutPayload:
+		collector.addTrafficOut(v)
+	}
+}
+
+func (collector *internalCollector) newClient(payload *NewClientPayload) {
+	collector.info.ClientCounts.Inc(1)
+}
+
+func (collector *internalCollector) closeClient(payload *CloseClientPayload) {
+	collector.info.ClientCounts.Dec(1)
+}
+
+func (collector *internalCollector) newProxy(payload *NewProxyPayload) {
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	counter, ok := collector.info.ProxyTypeCounts[payload.ProxyType]
+	if !ok {
+		counter = metric.NewCounter()
+	}
+	counter.Inc(1)
+	collector.info.ProxyTypeCounts[payload.ProxyType] = counter
+
+	proxyStats, ok := collector.info.ProxyStatistics[payload.Name]
+	if !(ok && proxyStats.ProxyType == payload.ProxyType) {
+		proxyStats = &ProxyStatistics{
+			Name:       payload.Name,
+			ProxyType:  payload.ProxyType,
+			CurConns:   metric.NewCounter(),
+			TrafficIn:  metric.NewDateCounter(ReserveDays),
+			TrafficOut: metric.NewDateCounter(ReserveDays),
+		}
+		collector.info.ProxyStatistics[payload.Name] = proxyStats
+	}
+	proxyStats.LastStartTime = time.Now()
+}
+
+func (collector *internalCollector) closeProxy(payload *CloseProxyPayload) {
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	if counter, ok := collector.info.ProxyTypeCounts[payload.ProxyType]; ok {
+		counter.Dec(1)
+	}
+	if proxyStats, ok := collector.info.ProxyStatistics[payload.Name]; ok {
+		proxyStats.LastCloseTime = time.Now()
+	}
+}
+
+func (collector *internalCollector) openConnection(payload *OpenConnectionPayload) {
+	collector.info.CurConns.Inc(1)
+
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	proxyStats, ok := collector.info.ProxyStatistics[payload.ProxyName]
+	if ok {
+		proxyStats.CurConns.Inc(1)
+		collector.info.ProxyStatistics[payload.ProxyName] = proxyStats
+	}
+}
+
+func (collector *internalCollector) closeConnection(payload *CloseConnectionPayload) {
+	collector.info.CurConns.Dec(1)
+
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	proxyStats, ok := collector.info.ProxyStatistics[payload.ProxyName]
+	if ok {
+		proxyStats.CurConns.Dec(1)
+		collector.info.ProxyStatistics[payload.ProxyName] = proxyStats
+	}
+}
+
+func (collector *internalCollector) addTrafficIn(payload *AddTrafficInPayload) {
+	collector.info.TotalTrafficIn.Inc(payload.TrafficBytes)
+
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+
+	proxyStats, ok := collector.info.ProxyStatistics[payload.ProxyName]
+	if ok {
+		proxyStats.TrafficIn.Inc(payload.TrafficBytes)
+		collector.info.ProxyStatistics[payload.ProxyName] = proxyStats
+	}
+}
+
+func (collector *internalCollector) addTrafficOut(payload *AddTrafficOutPayload) {
+	collector.info.TotalTrafficOut.Inc(payload.TrafficBytes)
+
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+
+	proxyStats, ok := collector.info.ProxyStatistics[payload.ProxyName]
+	if ok {
+		proxyStats.TrafficOut.Inc(payload.TrafficBytes)
+		collector.info.ProxyStatistics[payload.ProxyName] = proxyStats
+	}
+}
+
+func (collector *internalCollector) GetServer() *ServerStats {
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+	s := &ServerStats{
+		TotalTrafficIn:  collector.info.TotalTrafficIn.TodayCount(),
+		TotalTrafficOut: collector.info.TotalTrafficOut.TodayCount(),
+		CurConns:        collector.info.CurConns.Count(),
+		ClientCounts:    collector.info.ClientCounts.Count(),
+		ProxyTypeCounts: make(map[string]int64),
+	}
+	for k, v := range collector.info.ProxyTypeCounts {
+		s.ProxyTypeCounts[k] = v.Count()
+	}
+	return s
+}
+
+func (collector *internalCollector) GetProxiesByType(proxyType string) []*ProxyStats {
+	res := make([]*ProxyStats, 0)
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+
+	for name, proxyStats := range collector.info.ProxyStatistics {
+		if proxyStats.ProxyType != proxyType {
+			continue
+		}
+
+		ps := &ProxyStats{
+			Name:            name,
+			Type:            proxyStats.ProxyType,
+			TodayTrafficIn:  proxyStats.TrafficIn.TodayCount(),
+			TodayTrafficOut: proxyStats.TrafficOut.TodayCount(),
+			CurConns:        proxyStats.CurConns.Count(),
+		}
+		if !proxyStats.LastStartTime.IsZero() {
+			ps.LastStartTime = proxyStats.LastStartTime.Format("01-02 15:04:05")
+		}
+		if !proxyStats.LastCloseTime.IsZero() {
+			ps.LastCloseTime = proxyStats.LastCloseTime.Format("01-02 15:04:05")
+		}
+		res = append(res, ps)
+	}
+	return res
+}
+
+func (collector *internalCollector) GetProxiesByTypeAndName(proxyType string, proxyName string) (res *ProxyStats) {
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+
+	for name, proxyStats := range collector.info.ProxyStatistics {
+		if proxyStats.ProxyType != proxyType {
+			continue
+		}
+
+		if name != proxyName {
+			continue
+		}
+
+		res = &ProxyStats{
+			Name:            name,
+			Type:            proxyStats.ProxyType,
+			TodayTrafficIn:  proxyStats.TrafficIn.TodayCount(),
+			TodayTrafficOut: proxyStats.TrafficOut.TodayCount(),
+			CurConns:        proxyStats.CurConns.Count(),
+		}
+		if !proxyStats.LastStartTime.IsZero() {
+			res.LastStartTime = proxyStats.LastStartTime.Format("01-02 15:04:05")
+		}
+		if !proxyStats.LastCloseTime.IsZero() {
+			res.LastCloseTime = proxyStats.LastCloseTime.Format("01-02 15:04:05")
+		}
+		break
+	}
+	return
+}
+
+func (collector *internalCollector) GetProxyTraffic(name string) (res *ProxyTrafficInfo) {
+	collector.mu.Lock()
+	defer collector.mu.Unlock()
+
+	proxyStats, ok := collector.info.ProxyStatistics[name]
+	if ok {
+		res = &ProxyTrafficInfo{
+			Name: name,
+		}
+		res.TrafficIn = proxyStats.TrafficIn.GetLastDaysCount(ReserveDays)
+		res.TrafficOut = proxyStats.TrafficOut.GetLastDaysCount(ReserveDays)
+	}
+	return
+}

server/stats/stats.go

@@ -0,0 +1,129 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package stats
+
+import (
+	"time"
+
+	"github.com/fatedier/frp/utils/metric"
+)
+
+const (
+	ReserveDays = 7
+)
+
+type StatsType int
+
+const (
+	TypeNewClient StatsType = iota
+	TypeCloseClient
+	TypeNewProxy
+	TypeCloseProxy
+	TypeOpenConnection
+	TypeCloseConnection
+	TypeAddTrafficIn
+	TypeAddTrafficOut
+)
+
+type ServerStats struct {
+	TotalTrafficIn  int64
+	TotalTrafficOut int64
+	CurConns        int64
+	ClientCounts    int64
+	ProxyTypeCounts map[string]int64
+}
+
+type ProxyStats struct {
+	Name            string
+	Type            string
+	TodayTrafficIn  int64
+	TodayTrafficOut int64
+	LastStartTime   string
+	LastCloseTime   string
+	CurConns        int64
+}
+
+type ProxyTrafficInfo struct {
+	Name       string
+	TrafficIn  []int64
+	TrafficOut []int64
+}
+
+type ProxyStatistics struct {
+	Name          string
+	ProxyType     string
+	TrafficIn     metric.DateCounter
+	TrafficOut    metric.DateCounter
+	CurConns      metric.Counter
+	LastStartTime time.Time
+	LastCloseTime time.Time
+}
+
+type ServerStatistics struct {
+	TotalTrafficIn  metric.DateCounter
+	TotalTrafficOut metric.DateCounter
+	CurConns        metric.Counter
+
+	// counter for clients
+	ClientCounts metric.Counter
+
+	// counter for proxy types
+	ProxyTypeCounts map[string]metric.Counter
+
+	// statistics for different proxies
+	// key is proxy name
+	ProxyStatistics map[string]*ProxyStatistics
+}
+
+type Collector interface {
+	Mark(statsType StatsType, payload interface{})
+	Run() error
+	GetServer() *ServerStats
+	GetProxiesByType(proxyType string) []*ProxyStats
+	GetProxiesByTypeAndName(proxyType string, proxyName string) *ProxyStats
+	GetProxyTraffic(name string) *ProxyTrafficInfo
+}
+
+type NewClientPayload struct{}
+
+type CloseClientPayload struct{}
+
+type NewProxyPayload struct {
+	Name      string
+	ProxyType string
+}
+
+type CloseProxyPayload struct {
+	Name      string
+	ProxyType string
+}
+
+type OpenConnectionPayload struct {
+	ProxyName string
+}
+
+type CloseConnectionPayload struct {
+	ProxyName string
+}
+
+type AddTrafficInPayload struct {
+	ProxyName    string
+	TrafficBytes int64
+}
+
+type AddTrafficOutPayload struct {
+	ProxyName    string
+	TrafficBytes int64
+}

src/assets/static/css/iconfont.css

@@ -1,18 +0,0 @@
-
-@font-face {font-family: "iconfont";
-  src: url('/static/font/iconfont.eot'); /* IE9*/
-  src: url('/static/font/iconfont.eot#iefix') format('embedded-opentype'), /* IE6-IE8 */
-  url('/static/font/iconfont.woff') format('woff'), /* chrome, firefox */
-  url('/static/font/iconfont.ttf') format('truetype'), /* chrome, firefox, opera, Safari, Android, iOS 4.2+*/
-  url('/static/font/iconfont.svg#iconfont') format('svg'); /* iOS 4.1- */
-}
-
-.iconfont {
-  font-family:"iconfont" !important;
-  font-size:16px;
-  font-style:normal;
-  -webkit-font-smoothing: antialiased;
-  -webkit-text-stroke-width: 0.2px;
-  -moz-osx-font-smoothing: grayscale;
-}
-.icon-sort:before { content: "\e66d"; }

src/assets/static/font/iconfont.svg

@@ -1,39 +0,0 @@
-<?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
-<svg xmlns="http://www.w3.org/2000/svg">
-<metadata>
-Created by FontForge 20120731 at Thu Aug  4 18:45:29 2016
- By admin
-</metadata>
-<defs>
-<font id="iconfont" horiz-adv-x="374" >
-  <font-face 
-    font-family="iconfont"
-    font-weight="500"
-    font-stretch="normal"
-    units-per-em="1024"
-    panose-1="2 0 6 3 0 0 0 0 0 0"
-    ascent="896"
-    descent="-128"
-    x-height="792"
-    bbox="34 -83 956 792"
-    underline-thickness="50"
-    underline-position="-100"
-    unicode-range="U+0078-E66D"
-  />
-<missing-glyph 
-d="M34 0v682h272v-682h-272zM68 34h204v614h-204v-614z" />
-    <glyph glyph-name=".notdef" 
-d="M34 0v682h272v-682h-272zM68 34h204v614h-204v-614z" />
-    <glyph glyph-name=".null" horiz-adv-x="0" 
- />
-    <glyph glyph-name="nonmarkingreturn" horiz-adv-x="341" 
- />
-    <glyph glyph-name="x" unicode="x" horiz-adv-x="1001" 
-d="M281 543q-27 -1 -53 -1h-83q-18 0 -36.5 -6t-32.5 -18.5t-23 -32t-9 -45.5v-76h912v41q0 16 -0.5 30t-0.5 18q0 13 -5 29t-17 29.5t-31.5 22.5t-49.5 9h-133v-97h-438v97zM955 310v-52q0 -23 0.5 -52t0.5 -58t-10.5 -47.5t-26 -30t-33 -16t-31.5 -4.5q-14 -1 -29.5 -0.5
-t-29.5 0.5h-32l-45 128h-439l-44 -128h-29h-34q-20 0 -45 1q-25 0 -41 9.5t-25.5 23t-13.5 29.5t-4 30v167h911zM163 247q-12 0 -21 -8.5t-9 -21.5t9 -21.5t21 -8.5q13 0 22 8.5t9 21.5t-9 21.5t-22 8.5zM316 123q-8 -26 -14 -48q-5 -19 -10.5 -37t-7.5 -25t-3 -15t1 -14.5
-t9.5 -10.5t21.5 -4h37h67h81h80h64h36q23 0 34 12t2 38q-5 13 -9.5 30.5t-9.5 34.5q-5 19 -11 39h-368zM336 498v228q0 11 2.5 23t10 21.5t20.5 15.5t34 6h188q31 0 51.5 -14.5t20.5 -52.5v-227h-327z" />
-    <glyph glyph-name="uniE66D" unicode="&#xe66d;" horiz-adv-x="1024" 
-d="M922 440l-39 -39l-207 200v-684h-55v766h54zM349 -83l-247 243l39 39l207 -200v684h55v-766h-54z" />
-  </font>
-</defs></svg>

src/assets/static/index.html

@@ -1,303 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-
-<head>
-  <title>frp</title>
-  <link href="static/css/bootstrap.min.css" rel="stylesheet">
-  <link href="static/css/iconfont.css" rel="stylesheet">
-  <script src="static/js/jquery.min.js"></script>
-  <script src="static/js/bootstrap.min.js"></script>
-</head>
-
-<body>
-  <div class="container" style="margin-top: 80px">
-    <div class="row">
-      <div class="col-md-7">
-        <div class="panel panel-default">
-          <div ng-app="myTable" class="panel-body">
-            <table class="table table-bordered" ng-app="myTable" ng-controller="myCtrl">
-              <thead>
-                <tr>
-                  <th class="tab_info" ng-click="col='name';desc=!desc">Server<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='type';desc=!desc">Type<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='listen_port';desc=!desc">Port<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='status';desc=!desc">Status<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='current_conns';desc=!desc">CurCon<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='daily[daily.length-1].flow_out';desc=!desc">FlowOut<i class="iconfont pull-right">&#xe66d;</i></th>
-                  <th class="tab_info" ng-click="col='daily[daily.length-1].flow_in';desc=!desc">FlowIn<i class="iconfont pull-right">&#xe66d;</i></th>
-                </tr>
-              </thead>
-              <tbody id="tab_body">
-                <tr ng-repeat="x in proxies|orderBy:col:desc">
-                  <td>
-                    <button class="btn btn-xs btn-block btn-success center-block" onclick="changeit(this)"><span ng-bind="x.name"></span></button>
-                  </td>
-                  <td><span ng-bind="x.type"></span></td>
-                  <td><span ng-bind="x.listen_port"></span></td>
-                  <td><span ng-bind="x.status"></span></td>
-                  <td><span ng-bind="x.current_conns"></span></td>
-                  <td><span ng-bind="x.daily[x.daily.length-1].flow_out"></span></td>
-                  <td><span ng-bind="x.daily[x.daily.length-1].flow_in"></span></td>
-                </tr>
-              </tbody>
-            </table>
-          </div>
-        </div>
-      </div>
-      <div class="col-md-5">
-        <div id="view1" style="height: 300pt"></div>
-        <div id="view2" style="height: 300pt"></div>
-      </div>
-    </div>
-  </div>
-  <script src="static/js/angular.min.js"></script>
-  <script type="text/javascript" src="static/js/echarts.min.js"></script>
-  <script>
-    var alldata = new Array();
-    var index = null; 
-    <<< range .>>>
-      alldata["<<< .Name >>>"] = {
-        name: "<<< .Name >>>",
-        type: "<<< .Type >>>",
-        bind_addr: "<<< .BindAddr >>>",
-        listen_port: "<<< .ListenPort >>>",
-        current_conns: <<< .CurrentConns >>> ,
-        domains: [ <<< range.CustomDomains >>> "<<< . >>>", <<< end >>> ],
-        stat: "<<< .Status >>>",
-        use_encryption: "<<< .UseEncryption >>>",
-        use_gzip: "<<< .UseGzip >>>",
-        privilege_mode: "<<< .PrivilegeMode >>>",
-        times: [],
-        ins: [],
-        outs: [],
-        conns: [],
-      }; 
-    <<< end >>>
-
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-[];q(a.elements,function(a){k.recurse(a,k.nextId(),void 0,function(a){l.push(a)})});m="["+l.join(",")+"]";this.assign(b,m);c(m);break;case s.ObjectExpression:l=[];n=!1;q(a.properties,function(a){a.computed&&(n=!0)});n?(b=b||this.nextId(),this.assign(b,"{}"),q(a.properties,function(a){a.computed?(g=k.nextId(),k.recurse(a.key,g)):g=a.key.type===s.Identifier?a.key.name:""+a.key.value;h=k.nextId();k.recurse(a.value,h);k.assign(k.member(b,g,a.computed),h)})):(q(a.properties,function(b){k.recurse(b.value,
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-assign:function(a,b){if(a)return this.current().body.push(a,"=",b,";"),a},filter:function(a){this.state.filters.hasOwnProperty(a)||(this.state.filters[a]=this.nextId(!0));return this.state.filters[a]},ifDefined:function(a,b){return"ifDefined("+a+","+this.escape(b)+")"},plus:function(a,b){return"plus("+a+","+b+")"},return_:function(a){this.current().body.push("return ",a,";")},if_:function(a,b,d){if(!0===a)b();else{var c=this.current().body;c.push("if(",a,"){");b();c.push("}");d&&(c.push("else{"),
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-a+",text)"},lazyRecurse:function(a,b,d,c,e,f){var g=this;return function(){g.recurse(a,b,d,c,e,f)}},lazyAssign:function(a,b){var d=this;return function(){d.assign(a,b)}},stringEscapeRegex:/[^ a-zA-Z0-9]/g,stringEscapeFn:function(a){return"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)},escape:function(a){if(G(a))return"'"+a.replace(this.stringEscapeRegex,this.stringEscapeFn)+"'";if(T(a))return a.toString();if(!0===a)return"true";if(!1===a)return"false";if(null===a)return"null";if("undefined"===
-typeof a)return"undefined";throw X("esc");},nextId:function(a,b){var d="v"+this.state.nextId++;a||this.current().vars.push(d+(b?"="+b:""));return d},current:function(){return this.state[this.state.computing]}};ud.prototype={compile:function(a,b){var d=this,c=this.astBuilder.ast(a);this.expression=a;this.expensiveChecks=b;V(c,d.$filter);var e,f;if(e=rd(c))f=this.recurse(e);e=pd(c.body);var g;e&&(g=[],q(e,function(a,b){var c=d.recurse(a);a.input=c;g.push(c);a.watchId=b}));var h=[];q(c.body,function(a){h.push(d.recurse(a.expression))});
-e=0===c.body.length?A:1===c.body.length?h[0]:function(a,b){var c;q(h,function(d){c=d(a,b)});return c};f&&(e.assign=function(a,b,c){return f(a,c,b)});g&&(e.inputs=g);e.literal=sd(c);e.constant=c.constant;return e},recurse:function(a,b,d){var c,e,f=this,g;if(a.input)return this.inputs(a.input,a.watchId);switch(a.type){case s.Literal:return this.value(a.value,b);case s.UnaryExpression:return e=this.recurse(a.argument),this["unary"+a.operator](e,b);case s.BinaryExpression:return c=this.recurse(a.left),
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