Merge pull request #3147 from fatedier/dev

bump version

.circleci/config.yml

@@ -1,17 +1,17 @@
 version: 2
 jobs:
-  test1:
+  go-version-latest:
     docker:
-      - image: circleci/golang:1.16-node
+      - image: cimg/go:1.19-node
-    working_directory: /go/src/github.com/fatedier/frp
+    resource_class: large
     steps:
       - checkout
       - run: make
       - run: make alltest
-  test2:
+  go-version-last:
     docker:
-      - image: circleci/golang:1.15-node
+      - image: cimg/go:1.18-node
-    working_directory: /go/src/github.com/fatedier/frp
+    resource_class: large
     steps:
       - checkout
       - run: make
@@ -21,5 +21,5 @@ workflows:
   version: 2
   build_and_test:
     jobs:
-      - test1
+      - go-version-latest
-      - test2
+      - go-version-last

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: [fatedier]

.github/ISSUE_TEMPLATE/bug-report.md

@@ -1,44 +0,0 @@
----
-name: Bug Report
-about: Bug Report for FRP
-title: ''
-labels: Requires Testing
-assignees: ''
-
----
-
-<!-- From Chinese to English by machine translation, welcome to revise and polish. -->
-
-<!-- ⚠️⚠️ Incomplete reports will be marked as invalid, and closed, with few exceptions ⚠️⚠️ -->
-<!-- in addition, please use search well so that the same solution can be found in the feedback, we will close it directly -->
-<!-- for convenience of differentiation, use FRPS or FRPC to refer to the FRP server or client -->
-
-**[REQUIRED] hat version of frp are you using** 
-<!-- Use ./frpc -v or ./frps -v -->
-Version:
-
-**[REQUIRED] What operating system and processor architecture are you using**
-OS:
-CPU architecture:
-
-**[REQUIRED] description of errors**
-
-**confile**
-<!-- Please pay attention to hiding the token, server_addr and other privacy information -->
-
-**log file**
-<!--  If the file is too large, use Pastebin, for example https://pastebin.ubuntu.com/ -->
-
-**Steps to reproduce the issue**
-1. 
-2. 
-3. 
-
-**Supplementary information**
-
-**Can you guess what caused this issue**
-
-**Checklist**:
-<!--- Make sure you've completed the following steps (put an "X" between of brackets): -->
-- [] I included all information required in the sections above
-- [] I made sure there are no duplicates of this report [(Use Search)](https://github.com/fatedier/frp/issues?q=is%3Aissue)

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -0,0 +1,77 @@
+name: Bug report
+description: Report a bug to help us improve frp
+
+body:
+- type: markdown
+  attributes:
+    value: |
+      Thanks for taking the time to fill out this bug report!
+- type: textarea
+  id: bug-description
+  attributes:
+    label: Bug Description
+    description: Tell us what issues you ran into
+    placeholder: Include information about what you tried, what you expected to happen, and what actually happened. The more details, the better!
+  validations:
+    required: true
+- type: input
+  id: frpc-version
+  attributes:
+    label: frpc Version
+    description: Include the output of `frpc -v`
+  validations:
+    required: true
+- type: input
+  id: frps-version
+  attributes:
+    label: frps Version
+    description: Include the output of `frps -v`
+  validations:
+    required: true
+- type: input
+  id: system-architecture
+  attributes:
+    label: System Architecture
+    description: Include which architecture you used, such as `linux/amd64`, `windows/amd64`
+  validations:
+    required: true
+- type: textarea
+  id: config
+  attributes:
+    label: Configurations
+    description: Include what configurrations you used and ran into this problem
+    placeholder: Pay attention to hiding the token and password in your output
+  validations:
+    required: true
+- type: textarea
+  id: log
+  attributes:
+    label: Logs
+    description: Prefer you providing releated error logs here
+    placeholder: Pay attention to hiding your personal informations
+- type: textarea
+  id: steps-to-reproduce
+  attributes:
+    label: Steps to reproduce
+    description: How to reproduce it? It's important for us to find the bug
+    value: |
+      1. 
+      2. 
+      3. 
+      ...
+- type: checkboxes
+  id: area
+  attributes:
+    label: Affected area
+    options:
+    - label: "Docs"
+    - label: "Installation"
+    - label: "Performance and Scalability"
+    - label: "Security"
+    - label: "User Experience"
+    - label: "Test and Release"
+    - label: "Developer Infrastructure"
+    - label: "Client Plugin"
+    - label: "Server Plugin"
+    - label: "Extensions"
+    - label: "Others"

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1 @@
 blank_issues_enabled: false
-contact_links:
-  - name: DOCS
-    url: https://github.com/fatedier/frp
-    about: Here you can find out how to configure frp.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,22 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: "[+] Enhancement"
-assignees: ''
-
----
-
-<!-- From Chinese to English by machine translation, welcome to revise and polish. -->
-
-**The solution you want**
-<!--A clear and concise description of the solution you want. -->
-
-**Alternatives considered**
-<!--A clear and concise description of any alternative solutions or features you have considered. -->
-
-**How to implement this function**
-<!--Implementation steps for the solution you want. -->
-
-**Application scenarios of this function**
-<!--Make a clear and concise description of the application scenario of the solution you want. -->

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,36 @@
+name: Feature Request
+description: Suggest an idea to improve frp
+title: "[Feature Request] "
+
+body:
+- type: markdown
+  attributes:
+    value: |
+      This is only used to request new product features.
+- type: textarea
+  id: feature-request
+  attributes:
+    label: Describe the feature request
+    description: Tell us what's you want and why it should be added in frp.
+  validations:
+    required: true
+- type: textarea
+  id: alternatives
+  attributes:
+    label: Describe alternatives you've considered
+- type: checkboxes
+  id: area
+  attributes:
+    label: Affected area
+    options:
+    - label: "Docs"
+    - label: "Installation"
+    - label: "Performance and Scalability"
+    - label: "Security"
+    - label: "User Experience"
+    - label: "Test and Release"
+    - label: "Developer Infrastructure"
+    - label: "Client Plugin"
+    - label: "Server Plugin"
+    - label: "Extensions"
+    - label: "Others"

.github/workflows/build-and-push-image.yml

@@ -10,78 +10,45 @@ on:
         required: true
         default: 'test'
 jobs:
-  binary:
-    name: Build Golang project
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Set up Go 1.x
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.15
-      -
-        run: go version
-      -
-        name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-      -
-        name: Build
-        run: make build
-      -
-        name: Archive artifacts for frpc
-        uses: actions/upload-artifact@v1
-        with:
-          name: frpc
-          path: bin/frpc
-      -
-        name: Archive artifacts for frps
-        uses: actions/upload-artifact@v1
-        with:
-          name: frps
-          path: bin/frps
-
   image:
     name: Build Image from Dockerfile and binaries
     runs-on: ubuntu-latest
-    needs: binary
     steps:
       # environment
-      -
+      - name: Checkout
-        name: Checkout
         uses: actions/checkout@v2
         with:
           fetch-depth: '0'
-      -
+
-        name: Set up QEMU
+      - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
-      -
+
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
-      # download binaries of frpc and frps
+
-      -
-        name: Download binary of frpc
-        uses: actions/download-artifact@v2
-        with:
-          name: frpc
-          path: bin/frpc
-      -
-        name: Download binary of frps
-        uses: actions/download-artifact@v2
-        with:
-          name: frps
-          path: bin/frps
       # get image tag name
-      -
+      - name: Get Image Tag Name
-        name: Get Image Tag Name
         run: |
           if [ x${{ github.event.inputs.tag }} == x"" ]; then
             echo "TAG_NAME=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
           else
             echo "TAG_NAME=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
           fi
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Login to the GPR
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GPR_TOKEN }}
+
       # prepare image tags
-      -
+      - name: Prepare Image Tags
-        name: Prepare Image Tags
         run: |
           echo "DOCKERFILE_FRPC_PATH=dockerfiles/Dockerfile-for-frpc" >> $GITHUB_ENV
           echo "DOCKERFILE_FRPS_PATH=dockerfiles/Dockerfile-for-frps" >> $GITHUB_ENV
@@ -89,27 +56,25 @@ jobs:
           echo "TAG_FRPS=fatedier/frps:${{ env.TAG_NAME }}" >> $GITHUB_ENV
           echo "TAG_FRPC_GPR=ghcr.io/fatedier/frpc:${{ env.TAG_NAME }}" >> $GITHUB_ENV
           echo "TAG_FRPS_GPR=ghcr.io/fatedier/frps:${{ env.TAG_NAME }}" >> $GITHUB_ENV
-      # build images
+
-      -
+      - name: Build and push frpc
-        name: Build Images
+        uses: docker/build-push-action@v2
-        run: |
+        with:
-          # for Docker hub
+          context: .
-          docker build --file ${{ env.DOCKERFILE_FRPC_PATH }} --tag ${{ env.TAG_FRPC }} .
+          file: ./dockerfiles/Dockerfile-for-frpc
-          docker build --file ${{ env.DOCKERFILE_FRPS_PATH }} --tag ${{ env.TAG_FRPS }} .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/ppc64le,linux/riscv64,linux/s390x
-          # for GPR
+          push: true
-          docker build --file ${{ env.DOCKERFILE_FRPC_PATH }} --tag ${{ env.TAG_FRPC_GPR }} .
+          tags: |
-          docker build --file ${{ env.DOCKERFILE_FRPS_PATH }} --tag ${{ env.TAG_FRPS_GPR }} .
+            ${{ env.TAG_FRPC }}
-      # push to dockerhub
+            ${{ env.TAG_FRPC_GPR }}
-      -
+
-        name: Publish to Dockerhub
+      - name: Build and push frps
-        run: |
+        uses: docker/build-push-action@v2
-          echo ${{ secrets.DOCKERHUB_PASSWORD }} | docker login --username ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
+        with:
-          docker push ${{ env.TAG_FRPC }}
+          context: .
-          docker push ${{ env.TAG_FRPS }}
+          file: ./dockerfiles/Dockerfile-for-frps
-      # push to gpr
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/ppc64le,linux/riscv64,linux/s390x
-      -
+          push: true
-        name: Publish to GPR
+          tags: |
-        run: |
+            ${{ env.TAG_FRPS }}
-          echo ${{ secrets.GPR_TOKEN }} | docker login ghcr.io --username ${{ github.repository_owner }} --password-stdin
+            ${{ env.TAG_FRPS_GPR }}
-          docker push ${{ env.TAG_FRPC_GPR }}
-          docker push ${{ env.TAG_FRPS_GPR }}

.github/workflows/golangci-lint.yml

@@ -0,0 +1,41 @@
+name: golangci-lint
+on:
+  push:
+    branches:
+    - master
+    - dev
+  pull_request:
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  pull-requests: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.19
+      - uses: actions/checkout@v3
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
+          version: v1.49.0
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true then the all caching functionality will be complete disabled,
+          #           takes precedence over all other caching options.
+          # skip-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
+          # skip-build-cache: true

.github/workflows/goreleaser.yml

@@ -15,7 +15,11 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.16
+          go-version: 1.19
+          
+      - run: |
+          # https://github.com/actions/setup-go/issues/107
+          cp -f `which go` /usr/bin/go
 
       - name: Make All
         run: |

.github/workflows/stale.yml

@@ -12,15 +12,17 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/stale@v3
+    - uses: actions/stale@v5
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        stale-issue-message: 'Issues go stale after 45d of inactivity. Stale issues rot after an additional 10d of inactivity and eventually close.'
+        stale-issue-message: 'Issues go stale after 30d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.'
-        stale-pr-message: 'Issues go stale after 45d of inactivity. Stale issues rot after an additional 10d of inactivity and eventually close.'
+        stale-pr-message: "PRs go stale after 30d of inactivity. Stale PRs rot after an additional 7d of inactivity and eventually close."
         stale-issue-label: 'lifecycle/stale'
         exempt-issue-labels: 'bug,doc,enhancement,future,proposal,question,testing,todo,easy,help wanted,assigned'
         stale-pr-label: 'lifecycle/stale'
         exempt-pr-labels: 'bug,doc,enhancement,future,proposal,question,testing,todo,easy,help wanted,assigned'
-        days-before-stale: 45
+        days-before-stale: 30
-        days-before-close: 10
+        days-before-close: 7
         debug-only: ${{ github.event.inputs.debug-only }}
+        exempt-all-pr-milestones: true
+        exempt-all-pr-assignees: true

.golangci.yml

@@ -0,0 +1,140 @@
+service:
+  # When updating this, also update the version stored in docker/build-tools/Dockerfile in the istio/tools repo.
+  golangci-lint-version: 1.49.x # use the fixed version to not introduce new linters unexpectedly
+  
+run:
+  concurrency: 4
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  deadline: 20m
+  build-tags:
+  - integ
+  - integfuzz
+  # which dirs to skip: they won't be analyzed;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but next dirs are always skipped independently
+  # from this option's value:
+  #       vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs:
+    - genfiles$
+    - vendor$
+    - bin$
+
+  # which files to skip: they will be analyzed, but issues from them
+  # won't be reported. Default value is empty list, but there is
+  # no need to include all autogenerated files, we confidently recognize
+  # autogenerated files. If it's not please let us know.
+  skip-files:
+    - ".*\\.pb\\.go"
+    - ".*\\.gen\\.go"
+
+linters:
+  disable-all: true
+  enable:
+  - unused
+  - errcheck
+  - exportloopref
+  - gocritic
+  - gofumpt
+  - goimports
+  - revive
+  - gosimple
+  - govet
+  - ineffassign
+  - lll
+  - misspell
+  - staticcheck
+  - stylecheck
+  - typecheck
+  - unconvert
+  - unparam
+  - gci
+  - gosec
+  - asciicheck
+  - prealloc
+  - predeclared
+  - makezero
+  fast: false
+
+linters-settings:
+  errcheck:
+    # report about not checking of errors in type assetions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+  govet:
+    # report about shadowed variables
+    check-shadowing: false
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+  misspell:
+    # Correct spellings using locale preferences for US or UK.
+    # Default is to use a neutral variety of English.
+    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
+    locale: US
+    ignore-words:
+    - cancelled
+    - marshalled
+  lll:
+    # max line length, lines longer will be reported. Default is 120.
+    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
+    line-length: 160
+    # tab width in spaces. Default to 1.
+    tab-width: 1
+  gocritic:
+    disabled-checks:
+    - exitAfterDefer
+  unused:
+    check-exported: false
+  unparam:
+    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
+    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  gci:
+    sections:
+    - standard
+    - default
+    - prefix(github.com/fatedier/frp/)
+  gosec:
+    severity: "low"
+    confidence: "low"
+    excludes:
+    - G102
+    - G112
+    - G306
+    - G401
+    - G402
+    - G404
+    - G501
+
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  # exclude:
+  #  - composite literal uses unkeyed fields
+
+  exclude-rules:
+    # Exclude some linters from running on test files.
+    - path: _test\.go$|^tests/|^samples/
+      linters:
+        - errcheck
+        - maligned
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: true
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0

.goreleaser.yml

@@ -1,7 +1,10 @@
 builds:
   - skip: true
 checksum:
-  name_template: 'checksums.txt'
+  name_template: '{{ .ProjectName }}_sha256_checksums.txt'
+  algorithm: sha256
+  extra_files:
+  - glob: ./release/packages/*
 release:
   # Same as for github
   # Note: it can only be one: either github, gitlab or gitea

Makefile

@@ -12,13 +12,13 @@ file:
 	rm -rf ./assets/frpc/static/*
 	cp -rf ./web/frps/dist/* ./assets/frps/static
 	cp -rf ./web/frpc/dist/* ./assets/frpc/static
-	rm -rf ./assets/frps/statik
-	rm -rf ./assets/frpc/statik
-	go generate ./assets/...
 
 fmt:
 	go fmt ./...
 
+vet:
+	go vet ./...
+
 frps:
 	env CGO_ENABLED=0 go build -trimpath -ldflags "$(LDFLAGS)" -o bin/frps ./cmd/frps
 
@@ -34,13 +34,13 @@ gotest:
 	go test -v --cover ./server/...
 	go test -v --cover ./pkg/...
 
-ci:
-	go test -count=1 -p=1 -v ./tests/...
-
 e2e:
 	./hack/run-e2e.sh
 
-alltest: gotest ci e2e
+e2e-trace:
+	DEBUG=true LOG_LEVEL=trace ./hack/run-e2e.sh
+
+alltest: vet gotest e2e
 	
 clean:
 	rm -f ./bin/frpc

Makefile.cross-compiles

@@ -2,7 +2,7 @@ export PATH := $(GOPATH)/bin:$(PATH)
 export GO111MODULE=on
 LDFLAGS := -s -w
 
-os-archs=darwin:amd64 darwin:arm64 freebsd:386 freebsd:amd64 linux:386 linux:amd64 linux:arm linux:arm64 windows:386 windows:amd64 linux:mips64 linux:mips64le linux:mips:softfloat linux:mipsle:softfloat
+os-archs=darwin:amd64 darwin:arm64 freebsd:386 freebsd:amd64 linux:386 linux:amd64 linux:arm linux:arm64 windows:386 windows:amd64 linux:mips64 linux:mips64le linux:mips:softfloat linux:mipsle:softfloat linux:riscv64
 
 all: build
 

README.md

@@ -6,6 +6,21 @@
 
 [README](README.md) | [中文文档](README_zh.md)
 
+<h3 align="center">Gold Sponsors</h3>
+<!--gold sponsors start-->
+
+<p align="center">
+  <a href="https://workos.com/?utm_campaign=github_repo&utm_medium=referral&utm_content=frp&utm_source=github" target="_blank">
+    <img width="300px" src="https://raw.githubusercontent.com/fatedier/frp/dev/doc/pic/sponsor_workos.png">
+  </a>
+</p>
+
+<!--gold sponsors end-->
+
+<h3 align="center">Silver Sponsors</h3>
+
+* Sakura Frp - 欢迎点击 "加入我们"
+
 ## What is frp?
 
 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** and **UDP**, as well as **HTTP** and **HTTPS** protocols, where requests can be forwarded to internal services by domain name.
@@ -24,12 +39,13 @@ frp also has a P2P connect mode.
     * [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)
-    * [Enable HTTPS for local HTTP service](#enable-https-for-local-http-service)
+    * [Enable HTTPS for local HTTP(S) service](#enable-https-for-local-https-service)
     * [Expose your service privately](#expose-your-service-privately)
     * [P2P Mode](#p2p-mode)
 * [Features](#features)
     * [Configuration Files](#configuration-files)
     * [Using Environment Variables](#using-environment-variables)
+    * [Split Configures Into Different Files](#split-configures-into-different-files)
     * [Dashboard](#dashboard)
     * [Admin UI](#admin-ui)
     * [Monitor](#monitor)
@@ -66,8 +82,7 @@ frp also has a P2P connect mode.
 * [Development Plan](#development-plan)
 * [Contributing](#contributing)
 * [Donation](#donation)
-    * [AliPay](#alipay)
+    * [GitHub Sponsors](#github-sponsors)
-    * [Wechat Pay](#wechat-pay)
     * [PayPal](#paypal)
 
 <!-- vim-markdown-toc -->
@@ -76,7 +91,9 @@ frp also has a P2P connect mode.
 
 frp is under development. Try the latest release version in the `master` branch, or use the `dev` branch for the version in development.
 
-**The protocol might change at a release and we don't promise backwards compatibility. Please check the release log when upgrading the client and the server.**
+We are working on v2 version and trying to do some code refactor and improvements. It won't be compatible with v1.
+
+We will switch v0 to v1 at the right time and only accept bug fixes and improvements instead of big feature requirements.
 
 ## Architecture
 
@@ -412,6 +429,27 @@ export FRP_SSH_REMOTE_PORT="6000"
 
 `frpc` will render configuration file template using OS environment variables. Remember to prefix your reference with `.Envs`.
 
+### Split Configures Into Different Files
+
+You can split multiple proxy configs into different files and include them in the main file.
+
+```ini
+# frpc.ini
+[common]
+server_addr = x.x.x.x
+server_port = 7000
+includes=./confd/*.ini
+```
+
+```ini
+# ./confd/test.ini
+[ssh]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+remote_port = 6000
+```
+
 ### Dashboard
 
 Check frp's status and proxies' statistics information by Dashboard.
@@ -421,12 +459,27 @@ 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's username and password are both optional
 dashboard_user = admin
 dashboard_pwd = admin
 ```
 
-Then visit `http://[server_addr]:7500` to see the dashboard, with username and password both being `admin` by default.
+Then visit `http://[server_addr]:7500` to see the dashboard, with username and password both being `admin`.
+
+Additionally, you can use HTTPS port by using your domains wildcard or normal SSL certificate:
+
+```ini
+[common]
+dashboard_port = 7500
+# dashboard's username and password are both optional
+dashboard_user = admin
+dashboard_pwd = admin
+dashboard_tls_mode = true
+dashboard_tls_cert_file = server.crt
+dashboard_tls_key_file = server.key
+```
+
+Then visit `https://[server_addr]:7500` to see the dashboard in secure HTTPS connection, with username and password both being `admin`.
 
 ![dashboard](/doc/pic/dashboard.png)
 
@@ -444,7 +497,7 @@ admin_user = admin
 admin_pwd = admin
 ```
 
-Then visit `http://127.0.0.1:7400` to see admin UI, with username and password both being `admin` by default.
+Then visit `http://127.0.0.1:7400` to see admin UI, with username and password both being `admin`.
 
 ### Monitor
 
@@ -592,7 +645,7 @@ openssl req -new -sha256 -key server.key \
     -config <(cat my-openssl.cnf <(printf "\n[SAN]\nsubjectAltName=DNS:localhost,IP:127.0.0.1,DNS:example.server.com")) \
     -out server.csr
 
-openssl x509 -req -days 365 \
+openssl x509 -req -days 365 -sha256 \
 	-in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial \
 	-extfile <(printf "subjectAltName=DNS:localhost,IP:127.0.0.1,DNS:example.server.com") \
 	-out server.crt
@@ -607,7 +660,7 @@ openssl req -new -sha256 -key client.key \
     -config <(cat my-openssl.cnf <(printf "\n[SAN]\nsubjectAltName=DNS:client.com,DNS:example.client.com")) \
     -out client.csr
 
-openssl x509 -req -days 365 \
+openssl x509 -req -days 365 -sha256 \
     -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial \
 	-extfile <(printf "subjectAltName=DNS:client.com,DNS:example.client.com") \
 	-out client.crt
@@ -624,10 +677,12 @@ 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.
+Then run command `frpc reload -c ./frpc.ini` and wait for about 10 seconds to let `frpc` create or update or remove proxies.
 
 **Note that parameters in [common] section won't be modified except 'start'.**
 
+You can run command `frpc verify -c ./frpc.ini` before reloading to check if there are config errors.
+
 ### Get proxy status from client
 
 Use `frpc status -c ./frpc.ini` to get status of all proxies. The `admin_addr` and `admin_port` fields are required for enabling HTTP API.
@@ -817,7 +872,7 @@ custom_domains = test.example.com
 host_header_rewrite = dev.example.com
 ```
 
-The HTTP request will have the the `Host` header rewritten to `Host: dev.example.com` when it reaches the actual web server, although the request from the browser probably has `Host: test.example.com`.
+The HTTP request will have the `Host` header rewritten to `Host: dev.example.com` when it reaches the actual web server, although the request from the browser probably has `Host: test.example.com`.
 
 ### Setting other HTTP Headers
 
@@ -843,7 +898,7 @@ In this example, it will set header `X-From-Where: frp` in the HTTP request.
 
 This feature is for http proxy only.
 
-You can get user's real IP from HTTP request headers `X-Forwarded-For` and `X-Real-IP`.
+You can get user's real IP from HTTP request headers `X-Forwarded-For`.
 
 #### Proxy Protocol
 
@@ -959,11 +1014,13 @@ server_port = 7000
 type = tcpmux
 multiplexer = httpconnect
 custom_domains = test1
+local_port = 80
 
 [proxy2]
 type = tcpmux
 multiplexer = httpconnect
 custom_domains = test2
+local_port = 8080
 ```
 
 In the above configuration - frps can be contacted on port 1337 with a HTTP CONNECT header such as:
@@ -1049,15 +1106,11 @@ Interested in getting involved? We would like to help you!
 
 If frp helps you a lot, you can support us by:
 
-frp QQ group: 606194980
+### GitHub Sponsors
 
-### AliPay
+Support us by [Github Sponsors](https://github.com/sponsors/fatedier).
 
-![donation-alipay](/doc/pic/donate-alipay.png)
+You can have your company's logo placed on README file of this project.
-
-### Wechat Pay
-
-![donation-wechatpay](/doc/pic/donate-wechatpay.png)
 
 ### PayPal
 

README_zh.md

@@ -7,6 +7,21 @@
 
 frp 是一个专注于内网穿透的高性能的反向代理应用，支持 TCP、UDP、HTTP、HTTPS 等多种协议。可以将内网服务以安全、便捷的方式通过具有公网 IP 节点的中转暴露到公网。
 
+<h3 align="center">Gold Sponsors</h3>
+<!--gold sponsors start-->
+
+<p align="center">
+  <a href="https://workos.com/?utm_campaign=github_repo&utm_medium=referral&utm_content=frp&utm_source=github" target="_blank">
+    <img width="300px" src="https://raw.githubusercontent.com/fatedier/frp/dev/doc/pic/sponsor_workos.png">
+  </a>
+</p>
+
+<!--gold sponsors end-->
+
+<h3 align="center">Silver Sponsors</h3>
+
+* Sakura Frp - 欢迎点击 "加入我们"
+
 ## 为什么使用 frp ？
 
 通过在具有公网 IP 的节点上部署 frp 服务端，可以轻松地将内网服务穿透到公网，同时提供诸多专业的功能特性，这包括：
@@ -25,6 +40,10 @@ frp 目前已被很多公司广泛用于测试、生产环境。
 
 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。
 
+我们正在进行 v2 大版本的开发，将会尝试在各个方面进行重构和升级，且不会与 v1 版本进行兼容，预计会持续一段时间。
+
+现在的 v0 版本将会在合适的时间切换为 v1 版本并且保证兼容性，后续只做 bug 修复和优化，不再进行大的功能性更新。
+
 ## 文档
 
 完整文档已经迁移至 [https://gofrp.org](https://gofrp.org/docs)。
@@ -46,6 +65,12 @@ 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
 
 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。
 
+### GitHub Sponsors
+
+您可以通过 [GitHub Sponsors](https://github.com/sponsors/fatedier) 赞助我们。
+
+企业赞助者可以将贵公司的 Logo 以及链接放置在项目 README 文件中。
+
 ### 知识星球
 
 如果您想学习 frp 相关的知识和技术，或者寻求任何帮助及咨询，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：
@@ -59,7 +84,3 @@ 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
 ### 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。

Release.md

@@ -0,0 +1,3 @@
+### Improve
+
+* Adjust http group load balancing to forward requests to each frpc proxy round robin. Previous behavior is always forwarding requests to single proxy in the case of single concurrency.

assets/assets.go

@@ -14,22 +14,15 @@
 
 package assets
 
-//go:generate statik -src=./frps/static -dest=./frps
-//go:generate statik -src=./frpc/static -dest=./frpc
-//go:generate go fmt ./frps/statik/statik.go
-//go:generate go fmt ./frpc/statik/statik.go
-
 import (
-	"io/ioutil"
+	"io/fs"
 	"net/http"
-	"os"
-	"path"
-
-	"github.com/rakyll/statik/fs"
 )
 
 var (
-	// store static files in memory by statik
+	// read-only filesystem created by "embed" for embedded files
+	content fs.FS
+
 	FileSystem http.FileSystem
 
 	// if prefix is not empty, we get file content from disk
@@ -38,40 +31,18 @@ var (
 
 // if path is empty, load assets in memory
 // or set FileSystem using disk files
-func Load(path string) (err error) {
+func Load(path string) {
 	prefixPath = path
 	if prefixPath != "" {
 		FileSystem = http.Dir(prefixPath)
-		return nil
 	} else {
-		FileSystem, err = fs.New()
+		FileSystem = http.FS(content)
 	}
-	return err
 }
 
-func ReadFile(file string) (content string, err error) {
+func Register(fileSystem fs.FS) {
-	if prefixPath == "" {
+	subFs, err := fs.Sub(fileSystem, "static")
-		file, err := FileSystem.Open(path.Join("/", file))
+	if err == nil {
-		if err != nil {
+		content = subFs
-			return content, err
-		}
-		defer file.Close()
-		buf, err := ioutil.ReadAll(file)
-		if err != nil {
-			return content, err
-		}
-		content = string(buf)
-	} else {
-		file, err := os.Open(path.Join(prefixPath, file))
-		if err != nil {
-			return content, err
-		}
-		defer file.Close()
-		buf, err := ioutil.ReadAll(file)
-		if err != nil {
-			return content, err
-		}
-		content = string(buf)
 	}
-	return content, err
 }

assets/frpc/embed.go

@@ -0,0 +1,14 @@
+package frpc
+
+import (
+	"embed"
+
+	"github.com/fatedier/frp/assets"
+)
+
+//go:embed static/*
+var content embed.FS
+
+func init() {
+	assets.Register(content)
+}

assets/frpc/static/index.html

@@ -1 +1 @@
-<!doctype html> <html lang=en> <head> <meta charset=utf-8> <title>frp client admin UI</title> <link rel="shortcut icon" href="favicon.ico"></head> <body> <div id=app></div> <script type="text/javascript" src="manifest.js?f30e0e5ff7dbde4611e0"></script><script type="text/javascript" src="vendor.js?a82aed5fb0b844cbdb29"></script></body> </html> 
+<!doctype html> <html lang=en> <head> <meta charset=utf-8> <title>frp client admin UI</title> <link rel="shortcut icon" href="favicon.ico"></head> <body> <div id=app></div> <script type="text/javascript" src="manifest.js?5d5774096cf5c1b4d5af"></script><script type="text/javascript" src="vendor.js?dc42700731a508d39009"></script></body> </html> 

assets/frpc/static/manifest.js

@@ -1 +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:"a82aed5fb0b844cbdb29"}[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}}([]);
+!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:"dc42700731a508d39009"}[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}}([]);

assets/frps/embed.go

@@ -0,0 +1,14 @@
+package frpc
+
+import (
+	"embed"
+
+	"github.com/fatedier/frp/assets"
+)
+
+//go:embed static/*
+var content embed.FS
+
+func init() {
+	assets.Register(content)
+}

assets/frps/static/index.html

@@ -1 +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?782d7b1b910e824ac986"></script><script type="text/javascript" src="vendor.js?7f899297af075fb3b085"></script></body> </html> 
+<!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?5d154ba4c6b342d8c0c3"></script><script type="text/javascript" src="vendor.js?ddbd1f69fb6e67be4b78"></script></body> </html> 

assets/frps/static/manifest.js

@@ -1 +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,u,c){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 u)Object.prototype.hasOwnProperty.call(u,i)&&(e[i]=u[i]);for(r&&r(t,u,c);s.length;)s.shift()();if(c)for(l=0;l<c.length;l++)f=n(n.s=c[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 u=new Promise(function(n,r){t=o[e]=[n,r]});t[2]=u;var c=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:"7f899297af075fb3b085"}[e];var a=setTimeout(r,12e4);return i.onerror=i.onload=r,c.appendChild(i),u},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}}([]);
+!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,u,c){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 u)Object.prototype.hasOwnProperty.call(u,i)&&(e[i]=u[i]);for(r&&r(t,u,c);s.length;)s.shift()();if(c)for(l=0;l<c.length;l++)f=n(n.s=c[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 u=new Promise(function(n,r){t=o[e]=[n,r]});t[2]=u;var c=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:"ddbd1f69fb6e67be4b78"}[e];var a=setTimeout(r,12e4);return i.onerror=i.onload=r,c.appendChild(i),u},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

@@ -17,36 +17,49 @@ package client
 import (
 	"net"
 	"net/http"
+	"net/http/pprof"
 	"time"
 
+	"github.com/gorilla/mux"
+
 	"github.com/fatedier/frp/assets"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
-
-	"github.com/gorilla/mux"
 )
 
 var (
-	httpServerReadTimeout  = 10 * time.Second
+	httpServerReadTimeout  = 60 * time.Second
-	httpServerWriteTimeout = 10 * time.Second
+	httpServerWriteTimeout = 60 * time.Second
 )
 
 func (svr *Service) RunAdminServer(address string) (err error) {
 	// url router
 	router := mux.NewRouter()
 
-	user, passwd := svr.cfg.AdminUser, svr.cfg.AdminPwd
+	router.HandleFunc("/healthz", svr.healthz)
-	router.Use(frpNet.NewHTTPAuthMiddleware(user, passwd).Middleware)
 
-	// api, see dashboard_api.go
+	// debug
-	router.HandleFunc("/api/reload", svr.apiReload).Methods("GET")
+	if svr.cfg.PprofEnable {
-	router.HandleFunc("/api/status", svr.apiStatus).Methods("GET")
+		router.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
-	router.HandleFunc("/api/config", svr.apiGetConfig).Methods("GET")
+		router.HandleFunc("/debug/pprof/profile", pprof.Profile)
-	router.HandleFunc("/api/config", svr.apiPutConfig).Methods("PUT")
+		router.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
+		router.HandleFunc("/debug/pprof/trace", pprof.Trace)
+		router.PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
+	}
+
+	subRouter := router.NewRoute().Subrouter()
+	user, passwd := svr.cfg.AdminUser, svr.cfg.AdminPwd
+	subRouter.Use(frpNet.NewHTTPAuthMiddleware(user, passwd).Middleware)
+
+	// api, see admin_api.go
+	subRouter.HandleFunc("/api/reload", svr.apiReload).Methods("GET")
+	subRouter.HandleFunc("/api/status", svr.apiStatus).Methods("GET")
+	subRouter.HandleFunc("/api/config", svr.apiGetConfig).Methods("GET")
+	subRouter.HandleFunc("/api/config", svr.apiPutConfig).Methods("PUT")
 
 	// view
-	router.Handle("/favicon.ico", http.FileServer(assets.FileSystem)).Methods("GET")
+	subRouter.Handle("/favicon.ico", http.FileServer(assets.FileSystem)).Methods("GET")
-	router.PathPrefix("/static/").Handler(frpNet.MakeHTTPGzipHandler(http.StripPrefix("/static/", http.FileServer(assets.FileSystem)))).Methods("GET")
+	subRouter.PathPrefix("/static/").Handler(frpNet.MakeHTTPGzipHandler(http.StripPrefix("/static/", http.FileServer(assets.FileSystem)))).Methods("GET")
-	router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+	subRouter.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		http.Redirect(w, r, "/static/", http.StatusMovedPermanently)
 	})
 
@@ -64,6 +77,8 @@ func (svr *Service) RunAdminServer(address string) (err error) {
 		return err
 	}
 
-	go server.Serve(ln)
+	go func() {
+		_ = server.Serve(ln)
+	}()
 	return
 }

client/admin_api.go

@@ -17,9 +17,12 @@ package client
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
+	"net"
 	"net/http"
+	"os"
 	"sort"
+	"strconv"
 	"strings"
 
 	"github.com/fatedier/frp/client/proxy"
@@ -32,37 +35,25 @@ type GeneralResponse struct {
 	Msg  string
 }
 
-// GET api/reload
+// /healthz
+func (svr *Service) healthz(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(200)
+}
 
+// GET api/reload
 func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request) {
 	res := GeneralResponse{Code: 200}
 
-	log.Info("Http request [/api/reload]")
+	log.Info("api request [/api/reload]")
 	defer func() {
-		log.Info("Http response [/api/reload], code [%d]", res.Code)
+		log.Info("api response [/api/reload], code [%d]", res.Code)
 		w.WriteHeader(res.Code)
 		if len(res.Msg) > 0 {
-			w.Write([]byte(res.Msg))
+			_, _ = w.Write([]byte(res.Msg))
 		}
 	}()
 
-	content, err := config.GetRenderedConfFromFile(svr.cfgFile)
+	_, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(svr.cfgFile)
-	if err != nil {
-		res.Code = 400
-		res.Msg = err.Error()
-		log.Warn("reload frpc config file error: %s", res.Msg)
-		return
-	}
-
-	newCommonCfg, err := config.UnmarshalClientConfFromIni(content)
-	if err != nil {
-		res.Code = 400
-		res.Msg = err.Error()
-		log.Warn("reload frpc common section error: %s", res.Msg)
-		return
-	}
-
-	pxyCfgs, visitorCfgs, err := config.LoadAllProxyConfsFromIni(svr.cfg.User, content, newCommonCfg.Start)
 	if err != nil {
 		res.Code = 400
 		res.Msg = err.Error()
@@ -70,15 +61,13 @@ func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err = svr.ReloadConf(pxyCfgs, visitorCfgs)
+	if err = svr.ReloadConf(pxyCfgs, visitorCfgs); err != nil {
-	if err != nil {
 		res.Code = 500
 		res.Msg = err.Error()
 		log.Warn("reload frpc proxy config error: %s", res.Msg)
 		return
 	}
 	log.Info("success reload conf")
-	return
 }
 
 type StatusResp struct {
@@ -117,48 +106,48 @@ func NewProxyStatusResp(status *proxy.WorkingStatus, serverAddr string) ProxySta
 	switch cfg := status.Cfg.(type) {
 	case *config.TCPProxyConf:
 		if cfg.LocalPort != 0 {
-			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIP, cfg.LocalPort)
+			psr.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		}
 		psr.Plugin = cfg.Plugin
 		if status.Err != "" {
-			psr.RemoteAddr = fmt.Sprintf("%s:%d", serverAddr, cfg.RemotePort)
+			psr.RemoteAddr = net.JoinHostPort(serverAddr, strconv.Itoa(cfg.RemotePort))
 		} else {
 			psr.RemoteAddr = serverAddr + status.RemoteAddr
 		}
 	case *config.UDPProxyConf:
 		if cfg.LocalPort != 0 {
-			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIP, cfg.LocalPort)
+			psr.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		}
 		if status.Err != "" {
-			psr.RemoteAddr = fmt.Sprintf("%s:%d", serverAddr, cfg.RemotePort)
+			psr.RemoteAddr = net.JoinHostPort(serverAddr, strconv.Itoa(cfg.RemotePort))
 		} else {
 			psr.RemoteAddr = serverAddr + status.RemoteAddr
 		}
 	case *config.HTTPProxyConf:
 		if cfg.LocalPort != 0 {
-			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIP, cfg.LocalPort)
+			psr.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(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.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(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.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		}
 		psr.Plugin = cfg.Plugin
 	case *config.XTCPProxyConf:
 		if cfg.LocalPort != 0 {
-			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIP, cfg.LocalPort)
+			psr.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		}
 		psr.Plugin = cfg.Plugin
 	case *config.SUDPProxyConf:
 		if cfg.LocalPort != 0 {
-			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIP, cfg.LocalPort)
+			psr.LocalAddr = net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		}
 		psr.Plugin = cfg.Plugin
 	}
@@ -183,7 +172,7 @@ func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
 	defer func() {
 		log.Info("Http response [/api/status]")
 		buf, _ = json.Marshal(&res)
-		w.Write(buf)
+		_, _ = w.Write(buf)
 	}()
 
 	ps := svr.ctl.pm.GetAllProxyStatus()
@@ -212,7 +201,6 @@ func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
 	sort.Sort(ByProxyStatusResp(res.STCP))
 	sort.Sort(ByProxyStatusResp(res.XTCP))
 	sort.Sort(ByProxyStatusResp(res.SUDP))
-	return
 }
 
 // GET api/config
@@ -224,7 +212,7 @@ func (svr *Service) apiGetConfig(w http.ResponseWriter, r *http.Request) {
 		log.Info("Http get response [/api/config], code [%d]", res.Code)
 		w.WriteHeader(res.Code)
 		if len(res.Msg) > 0 {
-			w.Write([]byte(res.Msg))
+			_, _ = w.Write([]byte(res.Msg))
 		}
 	}()
 
@@ -264,12 +252,12 @@ func (svr *Service) apiPutConfig(w http.ResponseWriter, r *http.Request) {
 		log.Info("Http put response [/api/config], code [%d]", res.Code)
 		w.WriteHeader(res.Code)
 		if len(res.Msg) > 0 {
-			w.Write([]byte(res.Msg))
+			_, _ = w.Write([]byte(res.Msg))
 		}
 	}()
 
 	// get new config content
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		res.Code = 400
 		res.Msg = fmt.Sprintf("read request body error: %v", err)
@@ -286,7 +274,7 @@ func (svr *Service) apiPutConfig(w http.ResponseWriter, r *http.Request) {
 
 	// get token from origin content
 	token := ""
-	b, err := ioutil.ReadFile(svr.cfgFile)
+	b, err := os.ReadFile(svr.cfgFile)
 	if err != nil {
 		res.Code = 400
 		res.Msg = err.Error()
@@ -325,7 +313,7 @@ func (svr *Service) apiPutConfig(w http.ResponseWriter, r *http.Request) {
 	}
 	content = strings.Join(newRows, "\n")
 
-	err = ioutil.WriteFile(svr.cfgFile, []byte(content), 0644)
+	err = os.WriteFile(svr.cfgFile, []byte(content), 0o644)
 	if err != nil {
 		res.Code = 500
 		res.Msg = fmt.Sprintf("write content to frpc config file error: %v", err)

client/control.go

@@ -21,9 +21,13 @@ import (
 	"net"
 	"runtime/debug"
 	"strconv"
-	"sync"
 	"time"
 
+	"github.com/fatedier/golib/control/shutdown"
+	"github.com/fatedier/golib/crypto"
+	libdial "github.com/fatedier/golib/net/dial"
+	fmux "github.com/hashicorp/yamux"
+
 	"github.com/fatedier/frp/client/proxy"
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/config"
@@ -31,10 +35,6 @@ import (
 	"github.com/fatedier/frp/pkg/transport"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	"github.com/fatedier/golib/control/shutdown"
-	"github.com/fatedier/golib/crypto"
-	fmux "github.com/hashicorp/yamux"
 )
 
 type Control struct {
@@ -78,8 +78,6 @@ type Control struct {
 	// The UDP port that the server is listening on
 	serverUDPPort int
 
-	mu sync.RWMutex
-
 	xl *xlog.Logger
 
 	// service context
@@ -94,8 +92,8 @@ func NewControl(ctx context.Context, runID string, conn net.Conn, session *fmux.
 	pxyCfgs map[string]config.ProxyConf,
 	visitorCfgs map[string]config.VisitorConf,
 	serverUDPPort int,
-	authSetter auth.Setter) *Control {
+	authSetter auth.Setter,
-
+) *Control {
 	// new xlog instance
 	ctl := &Control{
 		runID:              runID,
@@ -130,7 +128,6 @@ func (ctl *Control) Run() {
 
 	// start all visitors
 	go ctl.vm.Run()
-	return
 }
 
 func (ctl *Control) HandleReqWorkConn(inMsg *msg.ReqWorkConn) {
@@ -182,9 +179,16 @@ func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
 }
 
 func (ctl *Control) Close() error {
+	return ctl.GracefulClose(0)
+}
+
+func (ctl *Control) GracefulClose(d time.Duration) error {
 	ctl.pm.Close()
-	ctl.conn.Close()
 	ctl.vm.Close()
+
+	time.Sleep(d)
+
+	ctl.conn.Close()
 	if ctl.session != nil {
 		ctl.session.Close()
 	}
@@ -227,12 +231,38 @@ func (ctl *Control) connectServer() (conn net.Conn, err error) {
 			}
 		}
 
-		address := net.JoinHostPort(ctl.clientCfg.ServerAddr, strconv.Itoa(ctl.clientCfg.ServerPort))
+		proxyType, addr, auth, err := libdial.ParseProxyURL(ctl.clientCfg.HTTPProxy)
-		conn, err = frpNet.ConnectServerByProxyWithTLS(ctl.clientCfg.HTTPProxy, ctl.clientCfg.Protocol, address, tlsConfig)
+		if err != nil {
-
+			xl.Error("fail to parse proxy url")
+			return nil, err
+		}
+		dialOptions := []libdial.DialOption{}
+		protocol := ctl.clientCfg.Protocol
+		if protocol == "websocket" {
+			protocol = "tcp"
+			dialOptions = append(dialOptions, libdial.WithAfterHook(libdial.AfterHook{Hook: frpNet.DialHookWebsocket()}))
+		}
+		if ctl.clientCfg.ConnectServerLocalIP != "" {
+			dialOptions = append(dialOptions, libdial.WithLocalAddr(ctl.clientCfg.ConnectServerLocalIP))
+		}
+		dialOptions = append(dialOptions,
+			libdial.WithProtocol(protocol),
+			libdial.WithTimeout(time.Duration(ctl.clientCfg.DialServerTimeout)*time.Second),
+			libdial.WithKeepAlive(time.Duration(ctl.clientCfg.DialServerKeepAlive)*time.Second),
+			libdial.WithProxy(proxyType, addr),
+			libdial.WithProxyAuth(auth),
+			libdial.WithTLSConfig(tlsConfig),
+			libdial.WithAfterHook(libdial.AfterHook{
+				Hook: frpNet.DialHookCustomTLSHeadByte(tlsConfig != nil, ctl.clientCfg.DisableCustomTLSFirstByte),
+			}),
+		)
+		conn, err = libdial.Dial(
+			net.JoinHostPort(ctl.clientCfg.ServerAddr, strconv.Itoa(ctl.clientCfg.ServerPort)),
+			dialOptions...,
+		)
 		if err != nil {
 			xl.Warn("start new connection to server error: %v", err)
-			return
+			return nil, err
 		}
 	}
 	return
@@ -301,16 +331,27 @@ func (ctl *Control) msgHandler() {
 	}()
 	defer ctl.msgHandlerShutdown.Done()
 
-	hbSend := time.NewTicker(time.Duration(ctl.clientCfg.HeartbeatInterval) * time.Second)
+	var hbSendCh <-chan time.Time
-	defer hbSend.Stop()
+	// TODO(fatedier): disable heartbeat if TCPMux is enabled.
-	hbCheck := time.NewTicker(time.Second)
+	// Just keep it here to keep compatible with old version frps.
-	defer hbCheck.Stop()
+	if ctl.clientCfg.HeartbeatInterval > 0 {
+		hbSend := time.NewTicker(time.Duration(ctl.clientCfg.HeartbeatInterval) * time.Second)
+		defer hbSend.Stop()
+		hbSendCh = hbSend.C
+	}
+
+	var hbCheckCh <-chan time.Time
+	// Check heartbeat timeout only if TCPMux is not enabled and users don't disable heartbeat feature.
+	if ctl.clientCfg.HeartbeatInterval > 0 && ctl.clientCfg.HeartbeatTimeout > 0 && !ctl.clientCfg.TCPMux {
+		hbCheck := time.NewTicker(time.Second)
+		defer hbCheck.Stop()
+		hbCheckCh = hbCheck.C
+	}
 
 	ctl.lastPong = time.Now()
-
 	for {
 		select {
-		case <-hbSend.C:
+		case <-hbSendCh:
 			// send heartbeat to server
 			xl.Debug("send heartbeat to server")
 			pingMsg := &msg.Ping{}
@@ -319,7 +360,7 @@ func (ctl *Control) msgHandler() {
 				return
 			}
 			ctl.sendCh <- pingMsg
-		case <-hbCheck.C:
+		case <-hbCheckCh:
 			if time.Since(ctl.lastPong) > time.Duration(ctl.clientCfg.HeartbeatTimeout)*time.Second {
 				xl.Warn("heartbeat timeout")
 				// let reader() stop
@@ -355,24 +396,21 @@ func (ctl *Control) worker() {
 	go ctl.reader()
 	go ctl.writer()
 
-	select {
+	<-ctl.closedCh
-	case <-ctl.closedCh:
+	// close related channels and wait until other goroutines done
-		// close related channels and wait until other goroutines done
+	close(ctl.readCh)
-		close(ctl.readCh)
+	ctl.readerShutdown.WaitDone()
-		ctl.readerShutdown.WaitDone()
+	ctl.msgHandlerShutdown.WaitDone()
-		ctl.msgHandlerShutdown.WaitDone()
 
-		close(ctl.sendCh)
+	close(ctl.sendCh)
-		ctl.writerShutdown.WaitDone()
+	ctl.writerShutdown.WaitDone()
 
-		ctl.pm.Close()
+	ctl.pm.Close()
-		ctl.vm.Close()
+	ctl.vm.Close()
 
-		close(ctl.closedDoneCh)
+	close(ctl.closedDoneCh)
-		if ctl.session != nil {
+	if ctl.session != nil {
-			ctl.session.Close()
+		ctl.session.Close()
-		}
-		return
 	}
 }
 

client/event/event.go

@@ -6,18 +6,9 @@ import (
 	"github.com/fatedier/frp/pkg/msg"
 )
 
-type Type int
+var ErrPayloadType = errors.New("error payload type")
 
-const (
+type Handler func(payload interface{}) error
-	EvStartProxy Type = iota
-	EvCloseProxy
-)
-
-var (
-	ErrPayloadType = errors.New("error payload type")
-)
-
-type Handler func(evType Type, payload interface{}) error
 
 type StartProxyPayload struct {
 	NewProxyMsg *msg.NewProxy

client/health/health.go

@@ -19,7 +19,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"time"
@@ -27,9 +26,7 @@ import (
 	"github.com/fatedier/frp/pkg/util/xlog"
 )
 
-var (
+var ErrHealthCheckType = errors.New("error health check type")
-	ErrHealthCheckType = errors.New("error health check type")
-)
 
 type Monitor struct {
 	checkType      string
@@ -55,8 +52,8 @@ type Monitor struct {
 func NewMonitor(ctx context.Context, checkType string,
 	intervalS int, timeoutS int, maxFailedTimes int,
 	addr string, url string,
-	statusNormalFn func(), statusFailedFn func()) *Monitor {
+	statusNormalFn func(), statusFailedFn func(),
-
+) *Monitor {
 	if intervalS <= 0 {
 		intervalS = 10
 	}
@@ -153,7 +150,7 @@ func (monitor *Monitor) doTCPCheck(ctx context.Context) error {
 }
 
 func (monitor *Monitor) doHTTPCheck(ctx context.Context) error {
-	req, err := http.NewRequest("GET", monitor.url, nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", monitor.url, nil)
 	if err != nil {
 		return err
 	}
@@ -162,7 +159,7 @@ func (monitor *Monitor) doHTTPCheck(ctx context.Context) error {
 		return err
 	}
 	defer resp.Body.Close()
-	io.Copy(ioutil.Discard, resp.Body)
+	_, _ = io.Copy(io.Discard, resp.Body)
 
 	if resp.StatusCode/100 != 2 {
 		return fmt.Errorf("do http health check, StatusCode is [%d] not 2xx", resp.StatusCode)

client/proxy/proxy.go

@@ -17,15 +17,21 @@ package proxy
 import (
 	"bytes"
 	"context"
-	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
 
+	"github.com/fatedier/golib/errors"
+	frpIo "github.com/fatedier/golib/io"
+	libdial "github.com/fatedier/golib/net/dial"
+	"github.com/fatedier/golib/pool"
+	fmux "github.com/hashicorp/yamux"
+	pp "github.com/pires/go-proxyproto"
+	"golang.org/x/time/rate"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/msg"
 	plugin "github.com/fatedier/frp/pkg/plugin/client"
@@ -33,13 +39,6 @@ import (
 	"github.com/fatedier/frp/pkg/util/limit"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	"github.com/fatedier/golib/errors"
-	frpIo "github.com/fatedier/golib/io"
-	"github.com/fatedier/golib/pool"
-	fmux "github.com/hashicorp/yamux"
-	pp "github.com/pires/go-proxyproto"
-	"golang.org/x/time/rate"
 )
 
 // Proxy defines how to handle work connections for different proxy type.
@@ -307,7 +306,7 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 		Sid:       natHoleSidMsg.Sid,
 	}
 	raddr, _ := net.ResolveUDPAddr("udp",
-		fmt.Sprintf("%s:%d", pxy.clientCfg.ServerAddr, pxy.serverUDPPort))
+		net.JoinHostPort(pxy.clientCfg.ServerAddr, strconv.Itoa(pxy.serverUDPPort)))
 	clientConn, err := net.DialUDP("udp", nil, raddr)
 	if err != nil {
 		xl.Error("dial server udp addr error: %v", err)
@@ -323,7 +322,7 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 
 	// Wait for client address at most 5 seconds.
 	var natHoleRespMsg msg.NatHoleResp
-	clientConn.SetReadDeadline(time.Now().Add(5 * time.Second))
+	_ = clientConn.SetReadDeadline(time.Now().Add(5 * time.Second))
 
 	buf := pool.GetBuf(1024)
 	n, err := clientConn.Read(buf)
@@ -336,8 +335,8 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 		xl.Error("get natHoleRespMsg error: %v", err)
 		return
 	}
-	clientConn.SetReadDeadline(time.Time{})
+	_ = clientConn.SetReadDeadline(time.Time{})
-	clientConn.Close()
+	_ = clientConn.Close()
 
 	if natHoleRespMsg.Error != "" {
 		xl.Error("natHoleRespMsg get error info: %s", natHoleRespMsg.Error)
@@ -347,35 +346,34 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 	xl.Trace("get natHoleRespMsg, sid [%s], client address [%s] visitor address [%s]", natHoleRespMsg.Sid, natHoleRespMsg.ClientAddr, natHoleRespMsg.VisitorAddr)
 
 	// Send detect message
-	array := strings.Split(natHoleRespMsg.VisitorAddr, ":")
+	host, portStr, err := net.SplitHostPort(natHoleRespMsg.VisitorAddr)
-	if len(array) <= 1 {
+	if err != nil {
-		xl.Error("get NatHoleResp visitor address error: %v", natHoleRespMsg.VisitorAddr)
+		xl.Error("get NatHoleResp visitor address [%s] error: %v", natHoleRespMsg.VisitorAddr, err)
 	}
 	laddr, _ := net.ResolveUDPAddr("udp", clientConn.LocalAddr().String())
-	/*
+
-		for i := 1000; i < 65000; i++ {
+	port, err := strconv.ParseInt(portStr, 10, 64)
-			pxy.sendDetectMsg(array[0], int64(i), laddr, "a")
-		}
-	*/
-	port, err := strconv.ParseInt(array[1], 10, 64)
 	if err != nil {
 		xl.Error("get natHoleResp visitor address error: %v", natHoleRespMsg.VisitorAddr)
 		return
 	}
-	pxy.sendDetectMsg(array[0], int(port), laddr, []byte(natHoleRespMsg.Sid))
+	_ = pxy.sendDetectMsg(host, int(port), laddr, []byte(natHoleRespMsg.Sid))
 	xl.Trace("send all detect msg done")
 
-	msg.WriteMsg(conn, &msg.NatHoleClientDetectOK{})
+	if err := msg.WriteMsg(conn, &msg.NatHoleClientDetectOK{}); err != nil {
+		xl.Error("write message error: %v", err)
+		return
+	}
 
 	// Listen for clientConn's address and wait for visitor connection
 	lConn, err := net.ListenUDP("udp", laddr)
 	if err != nil {
-		xl.Error("listen on visitorConn's local adress error: %v", err)
+		xl.Error("listen on visitorConn's local address error: %v", err)
 		return
 	}
 	defer lConn.Close()
 
-	lConn.SetReadDeadline(time.Now().Add(8 * time.Second))
+	_ = lConn.SetReadDeadline(time.Now().Add(8 * time.Second))
 	sidBuf := pool.GetBuf(1024)
 	var uAddr *net.UDPAddr
 	n, uAddr, err = lConn.ReadFromUDP(sidBuf)
@@ -383,7 +381,7 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 		xl.Warn("get sid from visitor error: %v", err)
 		return
 	}
-	lConn.SetReadDeadline(time.Time{})
+	_ = lConn.SetReadDeadline(time.Time{})
 	if string(sidBuf[:n]) != natHoleRespMsg.Sid {
 		xl.Warn("incorrect sid from visitor")
 		return
@@ -391,7 +389,10 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 	pool.PutBuf(sidBuf)
 	xl.Info("nat hole connection make success, sid [%s]", natHoleRespMsg.Sid)
 
-	lConn.WriteToUDP(sidBuf[:n], uAddr)
+	if _, err := lConn.WriteToUDP(sidBuf[:n], uAddr); err != nil {
+		xl.Error("write uaddr error: %v", err)
+		return
+	}
 
 	kcpConn, err := frpNet.NewKCPConnFromUDP(lConn, false, uAddr.String())
 	if err != nil {
@@ -401,7 +402,7 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 
 	fmuxCfg := fmux.DefaultConfig()
 	fmuxCfg.KeepAliveInterval = 5 * time.Second
-	fmuxCfg.LogOutput = ioutil.Discard
+	fmuxCfg.LogOutput = io.Discard
 	sess, err := fmux.Server(kcpConn, fmuxCfg)
 	if err != nil {
 		xl.Error("create yamux server from kcp connection error: %v", err)
@@ -419,7 +420,7 @@ func (pxy *XTCPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 }
 
 func (pxy *XTCPProxy) sendDetectMsg(addr string, port int, laddr *net.UDPAddr, content []byte) (err error) {
-	daddr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", addr, port))
+	daddr, err := net.ResolveUDPAddr("udp", net.JoinHostPort(addr, strconv.Itoa(port)))
 	if err != nil {
 		return err
 	}
@@ -429,12 +430,13 @@ func (pxy *XTCPProxy) sendDetectMsg(addr string, port int, laddr *net.UDPAddr, c
 		return err
 	}
 
-	//uConn := ipv4.NewConn(tConn)
+	// uConn := ipv4.NewConn(tConn)
-	//uConn.SetTTL(3)
+	// uConn.SetTTL(3)
 
-	tConn.Write(content)
+	if _, err := tConn.Write(content); err != nil {
-	tConn.Close()
+		return err
-	return nil
+	}
+	return tConn.Close()
 }
 
 // UDP
@@ -452,7 +454,7 @@ type UDPProxy struct {
 }
 
 func (pxy *UDPProxy) Run() (err error) {
-	pxy.localAddr, err = net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", pxy.cfg.LocalIP, pxy.cfg.LocalPort))
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", net.JoinHostPort(pxy.cfg.LocalIP, strconv.Itoa(pxy.cfg.LocalPort)))
 	if err != nil {
 		return
 	}
@@ -544,7 +546,7 @@ func (pxy *UDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 			}
 		}
 	}
-	heartbeatFn := func(conn net.Conn, sendCh chan msg.Message) {
+	heartbeatFn := func(sendCh chan msg.Message) {
 		var errRet error
 		for {
 			time.Sleep(time.Duration(30) * time.Second)
@@ -559,7 +561,7 @@ func (pxy *UDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 
 	go workConnSenderFn(pxy.workConn, pxy.sendCh)
 	go workConnReaderFn(pxy.workConn, pxy.readCh)
-	go heartbeatFn(pxy.workConn, pxy.sendCh)
+	go heartbeatFn(pxy.sendCh)
 	udp.Forwarder(pxy.localAddr, pxy.readCh, pxy.sendCh, int(pxy.clientCfg.UDPPacketSize))
 }
 
@@ -574,7 +576,7 @@ type SUDPProxy struct {
 }
 
 func (pxy *SUDPProxy) Run() (err error) {
-	pxy.localAddr, err = net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", pxy.cfg.LocalIP, pxy.cfg.LocalPort))
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", net.JoinHostPort(pxy.cfg.LocalIP, strconv.Itoa(pxy.cfg.LocalPort)))
 	if err != nil {
 		return
 	}
@@ -690,7 +692,7 @@ func (pxy *SUDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 		}
 	}
 
-	heartbeatFn := func(conn net.Conn, sendCh chan msg.Message) {
+	heartbeatFn := func(sendCh chan msg.Message) {
 		ticker := time.NewTicker(30 * time.Second)
 		defer func() {
 			ticker.Stop()
@@ -716,14 +718,15 @@ func (pxy *SUDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 
 	go workConnSenderFn(workConn, sendCh)
 	go workConnReaderFn(workConn, readCh)
-	go heartbeatFn(workConn, sendCh)
+	go heartbeatFn(sendCh)
 
 	udp.Forwarder(pxy.localAddr, readCh, sendCh, int(pxy.clientCfg.UDPPacketSize))
 }
 
 // Common handler for tcp work connections.
 func HandleTCPWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf, proxyPlugin plugin.Plugin,
-	baseInfo *config.BaseProxyConf, limiter *rate.Limiter, workConn net.Conn, encKey []byte, m *msg.StartWorkConn) {
+	baseInfo *config.BaseProxyConf, limiter *rate.Limiter, workConn net.Conn, encKey []byte, m *msg.StartWorkConn,
+) {
 	xl := xlog.FromContextSafe(ctx)
 	var (
 		remote io.ReadWriteCloser
@@ -757,12 +760,12 @@ func HandleTCPWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf
 			if m.DstAddr == "" {
 				m.DstAddr = "127.0.0.1"
 			}
+			srcAddr, _ := net.ResolveTCPAddr("tcp", net.JoinHostPort(m.SrcAddr, strconv.Itoa(int(m.SrcPort))))
+			dstAddr, _ := net.ResolveTCPAddr("tcp", net.JoinHostPort(m.DstAddr, strconv.Itoa(int(m.DstPort))))
 			h := &pp.Header{
-				Command:            pp.PROXY,
+				Command:         pp.PROXY,
-				SourceAddress:      net.ParseIP(m.SrcAddr),
+				SourceAddr:      srcAddr,
-				SourcePort:         m.SrcPort,
+				DestinationAddr: dstAddr,
-				DestinationAddress: net.ParseIP(m.DstAddr),
-				DestinationPort:    m.DstPort,
 			}
 
 			if strings.Contains(m.SrcAddr, ".") {
@@ -778,7 +781,7 @@ func HandleTCPWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf
 			}
 
 			buf := bytes.NewBuffer(nil)
-			h.WriteTo(buf)
+			_, _ = h.WriteTo(buf)
 			extraInfo = buf.Bytes()
 		}
 	}
@@ -791,7 +794,10 @@ func HandleTCPWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf
 		return
 	}
 
-	localConn, err := frpNet.ConnectServer("tcp", fmt.Sprintf("%s:%d", localInfo.LocalIP, localInfo.LocalPort))
+	localConn, err := libdial.Dial(
+		net.JoinHostPort(localInfo.LocalIP, strconv.Itoa(localInfo.LocalPort)),
+		libdial.WithTimeout(10*time.Second),
+	)
 	if err != nil {
 		workConn.Close()
 		xl.Error("connect to local service [%s:%d] error: %v", localInfo.LocalIP, localInfo.LocalPort, err)
@@ -802,7 +808,11 @@ func HandleTCPWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf
 		localConn.RemoteAddr().String(), workConn.LocalAddr().String(), workConn.RemoteAddr().String())
 
 	if len(extraInfo) > 0 {
-		localConn.Write(extraInfo)
+		if _, err := localConn.Write(extraInfo); err != nil {
+			workConn.Close()
+			xl.Error("write extraInfo to local conn error: %v", err)
+			return
+		}
 	}
 
 	frpIo.Join(localConn, remote)

client/proxy/proxy_manager.go

@@ -6,12 +6,12 @@ import (
 	"net"
 	"sync"
 
+	"github.com/fatedier/golib/errors"
+
 	"github.com/fatedier/frp/client/event"
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/msg"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	"github.com/fatedier/golib/errors"
 )
 
 type Manager struct {
@@ -75,7 +75,7 @@ func (pm *Manager) HandleWorkConn(name string, workConn net.Conn, m *msg.StartWo
 	}
 }
 
-func (pm *Manager) HandleEvent(evType event.Type, payload interface{}) error {
+func (pm *Manager) HandleEvent(payload interface{}) error {
 	var m msg.Message
 	switch e := payload.(type) {
 	case *event.StartProxyPayload:
@@ -113,10 +113,8 @@ func (pm *Manager) Reload(pxyCfgs map[string]config.ProxyConf) {
 		cfg, ok := pxyCfgs[name]
 		if !ok {
 			del = true
-		} else {
+		} else if !pxy.Cfg.Compare(cfg) {
-			if !pxy.Cfg.Compare(cfg) {
+			del = true
-				del = true
-			}
 		}
 
 		if del {

client/proxy/proxy_wrapper.go

@@ -8,13 +8,13 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/fatedier/golib/errors"
+
 	"github.com/fatedier/frp/client/event"
 	"github.com/fatedier/frp/client/health"
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/msg"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	"github.com/fatedier/golib/errors"
 )
 
 const (
@@ -27,9 +27,9 @@ const (
 )
 
 var (
-	statusCheckInterval time.Duration = 3 * time.Second
+	statusCheckInterval = 3 * time.Second
-	waitResponseTimeout               = 20 * time.Second
+	waitResponseTimeout = 20 * time.Second
-	startErrTimeout                   = 30 * time.Second
+	startErrTimeout     = 30 * time.Second
 )
 
 type WorkingStatus struct {
@@ -145,7 +145,7 @@ func (pw *Wrapper) Stop() {
 }
 
 func (pw *Wrapper) close() {
-	pw.handler(event.EvCloseProxy, &event.CloseProxyPayload{
+	_ = pw.handler(&event.CloseProxyPayload{
 		CloseProxyMsg: &msg.CloseProxy{
 			ProxyName: pw.Name,
 		},
@@ -174,7 +174,7 @@ func (pw *Wrapper) checkWorker() {
 				var newProxyMsg msg.NewProxy
 				pw.Cfg.MarshalToMsg(&newProxyMsg)
 				pw.lastSendStartMsg = now
-				pw.handler(event.EvStartProxy, &event.StartProxyPayload{
+				_ = pw.handler(&event.StartProxyPayload{
 					NewProxyMsg: &newProxyMsg,
 				})
 			}
@@ -201,7 +201,7 @@ func (pw *Wrapper) checkWorker() {
 func (pw *Wrapper) statusNormalCallback() {
 	xl := pw.xl
 	atomic.StoreUint32(&pw.health, 0)
-	errors.PanicToError(func() {
+	_ = errors.PanicToError(func() {
 		select {
 		case pw.healthNotifyCh <- struct{}{}:
 		default:
@@ -213,7 +213,7 @@ func (pw *Wrapper) statusNormalCallback() {
 func (pw *Wrapper) statusFailedCallback() {
 	xl := pw.xl
 	atomic.StoreUint32(&pw.health, 1)
-	errors.PanicToError(func() {
+	_ = errors.PanicToError(func() {
 		select {
 		case pw.healthNotifyCh <- struct{}{}:
 		default:
@@ -227,7 +227,7 @@ func (pw *Wrapper) InWorkConn(workConn net.Conn, m *msg.StartWorkConn) {
 	pw.mu.RLock()
 	pxy := pw.pxy
 	pw.mu.RUnlock()
-	if pxy != nil {
+	if pxy != nil && pw.Phase == ProxyPhaseRunning {
 		xl.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
 		go pxy.InWorkConn(workConn, m)
 	} else {

client/service.go

@@ -17,16 +17,21 @@ package client
 import (
 	"context"
 	"crypto/tls"
-	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
+	"math/rand"
 	"net"
 	"runtime"
 	"strconv"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 
+	"github.com/fatedier/golib/crypto"
+	libdial "github.com/fatedier/golib/net/dial"
+	fmux "github.com/hashicorp/yamux"
+
 	"github.com/fatedier/frp/assets"
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/config"
@@ -34,12 +39,16 @@ import (
 	"github.com/fatedier/frp/pkg/transport"
 	"github.com/fatedier/frp/pkg/util/log"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
+	"github.com/fatedier/frp/pkg/util/util"
 	"github.com/fatedier/frp/pkg/util/version"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	fmux "github.com/hashicorp/yamux"
 )
 
+func init() {
+	crypto.DefaultSalt = "frp"
+	rand.Seed(time.Now().UnixNano())
+}
+
 // Service is a client service.
 type Service struct {
 	// uniq id got from frps, attach it in loginMsg
@@ -72,8 +81,12 @@ type Service struct {
 	cancel context.CancelFunc
 }
 
-func NewService(cfg config.ClientCommonConf, pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf, cfgFile string) (svr *Service, err error) {
+func NewService(
-
+	cfg config.ClientCommonConf,
+	pxyCfgs map[string]config.ProxyConf,
+	visitorCfgs map[string]config.VisitorConf,
+	cfgFile string,
+) (svr *Service, err error) {
 	ctx, cancel := context.WithCancel(context.Background())
 	svr = &Service{
 		authSetter:  auth.NewAuthSetter(cfg.ClientConfig),
@@ -97,6 +110,21 @@ func (svr *Service) GetController() *Control {
 func (svr *Service) Run() error {
 	xl := xlog.FromContextSafe(svr.ctx)
 
+	// set custom DNSServer
+	if svr.cfg.DNSServer != "" {
+		dnsAddr := svr.cfg.DNSServer
+		if !strings.Contains(dnsAddr, ":") {
+			dnsAddr += ":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", dnsAddr)
+			},
+		}
+	}
+
 	// login to frps
 	for {
 		conn, session, err := svr.login()
@@ -108,7 +136,7 @@ func (svr *Service) Run() error {
 			if svr.cfg.LoginFailExit {
 				return err
 			}
-			time.Sleep(10 * time.Second)
+			util.RandomSleep(10*time.Second, 0.9, 1.1)
 		} else {
 			// login success
 			ctl := NewControl(svr.ctx, svr.runID, conn, session, svr.cfg, svr.pxyCfgs, svr.visitorCfgs, svr.serverUDPPort, svr.authSetter)
@@ -124,13 +152,10 @@ func (svr *Service) Run() error {
 
 	if svr.cfg.AdminPort != 0 {
 		// Init admin server assets
-		err := assets.Load(svr.cfg.AssetsDir)
+		assets.Load(svr.cfg.AssetsDir)
-		if err != nil {
-			return fmt.Errorf("Load assets error: %v", err)
-		}
 
 		address := net.JoinHostPort(svr.cfg.AdminAddr, strconv.Itoa(svr.cfg.AdminPort))
-		err = svr.RunAdminServer(address)
+		err := svr.RunAdminServer(address)
 		if err != nil {
 			log.Warn("run admin server error: %v", err)
 		}
@@ -160,8 +185,11 @@ func (svr *Service) keepControllerWorking() {
 
 		// the first three retry with no delay
 		if reconnectCounts > 3 {
-			time.Sleep(reconnectDelay)
+			util.RandomSleep(reconnectDelay, 0.9, 1.1)
+			xl.Info("wait %v to reconnect", reconnectDelay)
 			reconnectDelay *= 2
+		} else {
+			util.RandomSleep(time.Second, 0, 0.5)
 		}
 		reconnectCounts++
 
@@ -174,21 +202,19 @@ func (svr *Service) keepControllerWorking() {
 		}
 
 		for {
+			if atomic.LoadUint32(&svr.exit) != 0 {
+				return
+			}
+
 			xl.Info("try to reconnect to server...")
 			conn, session, err := svr.login()
 			if err != nil {
-				xl.Warn("reconnect to server error: %v", err)
+				xl.Warn("reconnect to server error: %v, wait %v for another retry", err, delayTime)
-				time.Sleep(delayTime)
+				util.RandomSleep(delayTime, 0.9, 1.1)
 
-				opErr := &net.OpError{}
+				delayTime *= 2
-				// quick retry for dial error
+				if delayTime > maxDelayTime {
-				if errors.As(err, &opErr) && opErr.Op == "dial" {
+					delayTime = maxDelayTime
-					delayTime = 2 * time.Second
-				} else {
-					delayTime = delayTime * 2
-					if delayTime > maxDelayTime {
-						delayTime = maxDelayTime
-					}
 				}
 				continue
 			}
@@ -231,8 +257,35 @@ func (svr *Service) login() (conn net.Conn, session *fmux.Session, err error) {
 		}
 	}
 
-	address := net.JoinHostPort(svr.cfg.ServerAddr, strconv.Itoa(svr.cfg.ServerPort))
+	proxyType, addr, auth, err := libdial.ParseProxyURL(svr.cfg.HTTPProxy)
-	conn, err = frpNet.ConnectServerByProxyWithTLS(svr.cfg.HTTPProxy, svr.cfg.Protocol, address, tlsConfig)
+	if err != nil {
+		xl.Error("fail to parse proxy url")
+		return
+	}
+	dialOptions := []libdial.DialOption{}
+	protocol := svr.cfg.Protocol
+	if protocol == "websocket" {
+		protocol = "tcp"
+		dialOptions = append(dialOptions, libdial.WithAfterHook(libdial.AfterHook{Hook: frpNet.DialHookWebsocket()}))
+	}
+	if svr.cfg.ConnectServerLocalIP != "" {
+		dialOptions = append(dialOptions, libdial.WithLocalAddr(svr.cfg.ConnectServerLocalIP))
+	}
+	dialOptions = append(dialOptions,
+		libdial.WithProtocol(protocol),
+		libdial.WithTimeout(time.Duration(svr.cfg.DialServerTimeout)*time.Second),
+		libdial.WithKeepAlive(time.Duration(svr.cfg.DialServerKeepAlive)*time.Second),
+		libdial.WithProxy(proxyType, addr),
+		libdial.WithProxyAuth(auth),
+		libdial.WithTLSConfig(tlsConfig),
+		libdial.WithAfterHook(libdial.AfterHook{
+			Hook: frpNet.DialHookCustomTLSHeadByte(tlsConfig != nil, svr.cfg.DisableCustomTLSFirstByte),
+		}),
+	)
+	conn, err = libdial.Dial(
+		net.JoinHostPort(svr.cfg.ServerAddr, strconv.Itoa(svr.cfg.ServerPort)),
+		dialOptions...,
+	)
 	if err != nil {
 		return
 	}
@@ -248,8 +301,8 @@ func (svr *Service) login() (conn net.Conn, session *fmux.Session, err error) {
 
 	if svr.cfg.TCPMux {
 		fmuxCfg := fmux.DefaultConfig()
-		fmuxCfg.KeepAliveInterval = 20 * time.Second
+		fmuxCfg.KeepAliveInterval = time.Duration(svr.cfg.TCPMuxKeepaliveInterval) * time.Second
-		fmuxCfg.LogOutput = ioutil.Discard
+		fmuxCfg.LogOutput = io.Discard
 		session, err = fmux.Client(conn, fmuxCfg)
 		if err != nil {
 			return
@@ -284,11 +337,11 @@ func (svr *Service) login() (conn net.Conn, session *fmux.Session, err error) {
 	}
 
 	var loginRespMsg msg.LoginResp
-	conn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	_ = conn.SetReadDeadline(time.Now().Add(10 * time.Second))
 	if err = msg.ReadMsgInto(conn, &loginRespMsg); err != nil {
 		return
 	}
-	conn.SetReadDeadline(time.Time{})
+	_ = conn.SetReadDeadline(time.Time{})
 
 	if loginRespMsg.Error != "" {
 		err = fmt.Errorf("%s", loginRespMsg.Error)
@@ -311,13 +364,28 @@ func (svr *Service) ReloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs
 	svr.visitorCfgs = visitorCfgs
 	svr.cfgMu.Unlock()
 
-	return svr.ctl.ReloadConf(pxyCfgs, visitorCfgs)
+	svr.ctlMu.RLock()
+	ctl := svr.ctl
+	svr.ctlMu.RUnlock()
+
+	if ctl != nil {
+		return svr.ctl.ReloadConf(pxyCfgs, visitorCfgs)
+	}
+	return nil
 }
 
 func (svr *Service) Close() {
+	svr.GracefulClose(time.Duration(0))
+}
+
+func (svr *Service) GracefulClose(d time.Duration) {
 	atomic.StoreUint32(&svr.exit, 1)
+
+	svr.ctlMu.RLock()
 	if svr.ctl != nil {
-		svr.ctl.Close()
+		svr.ctl.GracefulClose(d)
 	}
+	svr.ctlMu.RUnlock()
+
 	svr.cancel()
 }

client/visitor.go

@@ -19,22 +19,22 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
+	"strconv"
 	"sync"
 	"time"
 
+	"github.com/fatedier/golib/errors"
+	frpIo "github.com/fatedier/golib/io"
+	"github.com/fatedier/golib/pool"
+	fmux "github.com/hashicorp/yamux"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/msg"
 	"github.com/fatedier/frp/pkg/proto/udp"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
 	"github.com/fatedier/frp/pkg/util/util"
 	"github.com/fatedier/frp/pkg/util/xlog"
-
-	"github.com/fatedier/golib/errors"
-	frpIo "github.com/fatedier/golib/io"
-	"github.com/fatedier/golib/pool"
-	fmux "github.com/hashicorp/yamux"
 )
 
 // Visitor is used for forward traffics from local port tot remote service.
@@ -71,9 +71,8 @@ func NewVisitor(ctx context.Context, ctl *Control, cfg config.VisitorConf) (visi
 }
 
 type BaseVisitor struct {
-	ctl    *Control
+	ctl *Control
-	l      net.Listener
+	l   net.Listener
-	closed bool
 
 	mu  sync.RWMutex
 	ctx context.Context
@@ -86,7 +85,7 @@ type STCPVisitor struct {
 }
 
 func (sv *STCPVisitor) Run() (err error) {
-	sv.l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", sv.cfg.BindAddr, sv.cfg.BindPort))
+	sv.l, err = net.Listen("tcp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
 	if err != nil {
 		return
 	}
@@ -138,13 +137,13 @@ func (sv *STCPVisitor) handleConn(userConn net.Conn) {
 	}
 
 	var newVisitorConnRespMsg msg.NewVisitorConnResp
-	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
 	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
 	if err != nil {
 		xl.Warn("get newVisitorConnRespMsg error: %v", err)
 		return
 	}
-	visitorConn.SetReadDeadline(time.Time{})
+	_ = visitorConn.SetReadDeadline(time.Time{})
 
 	if newVisitorConnRespMsg.Error != "" {
 		xl.Warn("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
@@ -175,7 +174,7 @@ type XTCPVisitor struct {
 }
 
 func (sv *XTCPVisitor) Run() (err error) {
-	sv.l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", sv.cfg.BindAddr, sv.cfg.BindPort))
+	sv.l, err = net.Listen("tcp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
 	if err != nil {
 		return
 	}
@@ -212,7 +211,7 @@ func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
 	}
 
 	raddr, err := net.ResolveUDPAddr("udp",
-		fmt.Sprintf("%s:%d", sv.ctl.clientCfg.ServerAddr, sv.ctl.serverUDPPort))
+		net.JoinHostPort(sv.ctl.clientCfg.ServerAddr, strconv.Itoa(sv.ctl.serverUDPPort)))
 	if err != nil {
 		xl.Error("resolve server UDP addr error")
 		return
@@ -239,7 +238,7 @@ func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
 
 	// Wait for client address at most 10 seconds.
 	var natHoleRespMsg msg.NatHoleResp
-	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
 	buf := pool.GetBuf(1024)
 	n, err := visitorConn.Read(buf)
 	if err != nil {
@@ -252,7 +251,7 @@ func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
 		xl.Warn("get natHoleRespMsg error: %v", err)
 		return
 	}
-	visitorConn.SetReadDeadline(time.Time{})
+	_ = visitorConn.SetReadDeadline(time.Time{})
 	pool.PutBuf(buf)
 
 	if natHoleRespMsg.Error != "" {
@@ -279,17 +278,20 @@ func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
 	}
 	defer lConn.Close()
 
-	lConn.Write([]byte(natHoleRespMsg.Sid))
+	if _, err := lConn.Write([]byte(natHoleRespMsg.Sid)); err != nil {
+		xl.Error("write sid error: %v", err)
+		return
+	}
 
 	// read ack sid from client
 	sidBuf := pool.GetBuf(1024)
-	lConn.SetReadDeadline(time.Now().Add(8 * time.Second))
+	_ = lConn.SetReadDeadline(time.Now().Add(8 * time.Second))
 	n, err = lConn.Read(sidBuf)
 	if err != nil {
 		xl.Warn("get sid from client error: %v", err)
 		return
 	}
-	lConn.SetReadDeadline(time.Time{})
+	_ = lConn.SetReadDeadline(time.Time{})
 	if string(sidBuf[:n]) != natHoleRespMsg.Sid {
 		xl.Warn("incorrect sid from client")
 		return
@@ -308,7 +310,7 @@ func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
 
 	fmuxCfg := fmux.DefaultConfig()
 	fmuxCfg.KeepAliveInterval = 5 * time.Second
-	fmuxCfg.LogOutput = ioutil.Discard
+	fmuxCfg.LogOutput = io.Discard
 	sess, err := fmux.Client(remote, fmuxCfg)
 	if err != nil {
 		xl.Error("create yamux session error: %v", err)
@@ -353,7 +355,7 @@ type SUDPVisitor struct {
 func (sv *SUDPVisitor) Run() (err error) {
 	xl := xlog.FromContextSafe(sv.ctx)
 
-	addr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", sv.cfg.BindAddr, sv.cfg.BindPort))
+	addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
 	if err != nil {
 		return fmt.Errorf("sudp ResolveUDPAddr error: %v", err)
 	}
@@ -366,7 +368,7 @@ func (sv *SUDPVisitor) Run() (err error) {
 	sv.sendCh = make(chan *msg.UDPPacket, 1024)
 	sv.readCh = make(chan *msg.UDPPacket, 1024)
 
-	xl.Info("sudp start to work")
+	xl.Info("sudp start to work, listen on %s", addr)
 
 	go sv.dispatcher()
 	go udp.ForwardUserConn(sv.udpConn, sv.readCh, sv.sendCh, int(sv.ctl.clientCfg.UDPPacketSize))
@@ -377,29 +379,33 @@ func (sv *SUDPVisitor) Run() (err error) {
 func (sv *SUDPVisitor) dispatcher() {
 	xl := xlog.FromContextSafe(sv.ctx)
 
+	var (
+		visitorConn net.Conn
+		err         error
+
+		firstPacket *msg.UDPPacket
+	)
+
 	for {
-		// loop for get frpc to frps tcp conn
+		select {
-		// setup worker
+		case firstPacket = <-sv.sendCh:
-		// wait worker to finished
+			if firstPacket == nil {
-		// retry or exit
-		visitorConn, err := sv.getNewVisitorConn()
-		if err != nil {
-			// check if proxy is closed
-			// if checkCloseCh is close, we will return, other case we will continue to reconnect
-			select {
-			case <-sv.checkCloseCh:
 				xl.Info("frpc sudp visitor proxy is closed")
 				return
-			default:
 			}
+		case <-sv.checkCloseCh:
+			xl.Info("frpc sudp visitor proxy is closed")
+			return
+		}
 
-			time.Sleep(3 * time.Second)
+		visitorConn, err = sv.getNewVisitorConn()
-
+		if err != nil {
 			xl.Warn("newVisitorConn to frps error: %v, try to reconnect", err)
 			continue
 		}
 
-		sv.worker(visitorConn)
+		// visitorConn always be closed when worker done.
+		sv.worker(visitorConn, firstPacket)
 
 		select {
 		case <-sv.checkCloseCh:
@@ -409,7 +415,7 @@ func (sv *SUDPVisitor) dispatcher() {
 	}
 }
 
-func (sv *SUDPVisitor) worker(workConn net.Conn) {
+func (sv *SUDPVisitor) worker(workConn net.Conn, firstPacket *msg.UDPPacket) {
 	xl := xlog.FromContextSafe(sv.ctx)
 	xl.Debug("starting sudp proxy worker")
 
@@ -432,13 +438,13 @@ func (sv *SUDPVisitor) worker(workConn net.Conn) {
 			)
 
 			// frpc will send heartbeat in workConn to frpc visitor for keeping alive
-			conn.SetReadDeadline(time.Now().Add(60 * time.Second))
+			_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
 			if rawMsg, errRet = msg.ReadMsg(conn); errRet != nil {
 				xl.Warn("read from workconn for user udp conn error: %v", errRet)
 				return
 			}
 
-			conn.SetReadDeadline(time.Time{})
+			_ = conn.SetReadDeadline(time.Time{})
 			switch m := rawMsg.(type) {
 			case *msg.Ping:
 				xl.Debug("frpc visitor get ping message from frpc")
@@ -446,7 +452,7 @@ func (sv *SUDPVisitor) worker(workConn net.Conn) {
 			case *msg.UDPPacket:
 				if errRet := errors.PanicToError(func() {
 					sv.readCh <- m
-					xl.Trace("frpc visitor get udp packet from frpc")
+					xl.Trace("frpc visitor get udp packet from workConn: %s", m.Content)
 				}); errRet != nil {
 					xl.Info("reader goroutine for udp work connection closed")
 					return
@@ -463,6 +469,14 @@ func (sv *SUDPVisitor) worker(workConn net.Conn) {
 		}()
 
 		var errRet error
+		if firstPacket != nil {
+			if errRet = msg.WriteMsg(conn, firstPacket); errRet != nil {
+				xl.Warn("sender goroutine for udp work connection closed: %v", errRet)
+				return
+			}
+			xl.Trace("send udp package to workConn: %s", firstPacket.Content)
+		}
+
 		for {
 			select {
 			case udpMsg, ok := <-sv.sendCh:
@@ -475,6 +489,7 @@ func (sv *SUDPVisitor) worker(workConn net.Conn) {
 					xl.Warn("sender goroutine for udp work connection closed: %v", errRet)
 					return
 				}
+				xl.Trace("send udp package to workConn: %s", udpMsg.Content)
 			case <-closeCh:
 				return
 			}
@@ -509,12 +524,12 @@ func (sv *SUDPVisitor) getNewVisitorConn() (net.Conn, error) {
 	}
 
 	var newVisitorConnRespMsg msg.NewVisitorConnResp
-	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
 	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
 	if err != nil {
 		return nil, fmt.Errorf("frpc read newVisitorConnRespMsg error: %v", err)
 	}
-	visitorConn.SetReadDeadline(time.Time{})
+	_ = visitorConn.SetReadDeadline(time.Time{})
 
 	if newVisitorConnRespMsg.Error != "" {
 		return nil, fmt.Errorf("start new visitor connection error: %s", newVisitorConnRespMsg.Error)

client/visitor_manager.go

@@ -65,7 +65,7 @@ func (vm *VisitorManager) Run() {
 				name := cfg.GetBaseInfo().ProxyName
 				if _, exist := vm.visitors[name]; !exist {
 					xl.Info("try to start visitor [%s]", name)
-					vm.startVisitor(cfg)
+					_ = vm.startVisitor(cfg)
 				}
 			}
 			vm.mu.Unlock()
@@ -99,10 +99,8 @@ func (vm *VisitorManager) Reload(cfgs map[string]config.VisitorConf) {
 		cfg, ok := cfgs[name]
 		if !ok {
 			del = true
-		} else {
+		} else if !oldCfg.Compare(cfg) {
-			if !oldCfg.Compare(cfg) {
+			del = true
-				del = true
-			}
 		}
 
 		if del {
@@ -123,13 +121,12 @@ func (vm *VisitorManager) Reload(cfgs map[string]config.VisitorConf) {
 		if _, ok := vm.cfgs[name]; !ok {
 			vm.cfgs[name] = cfg
 			addNames = append(addNames, name)
-			vm.startVisitor(cfg)
+			_ = vm.startVisitor(cfg)
 		}
 	}
 	if len(addNames) > 0 {
 		xl.Info("visitor added: %v", addNames)
 	}
-	return
 }
 
 func (vm *VisitorManager) Close() {

cmd/frpc/main.go

@@ -15,18 +15,10 @@
 package main
 
 import (
-	"math/rand"
+	_ "github.com/fatedier/frp/assets/frpc"
-	"time"
-
-	_ "github.com/fatedier/frp/assets/frpc/statik"
 	"github.com/fatedier/frp/cmd/frpc/sub"
-
-	"github.com/fatedier/golib/crypto"
 )
 
 func main() {
-	crypto.DefaultSalt = "frp"
-	rand.Seed(time.Now().UnixNano())
-
 	sub.Execute()
 }

cmd/frpc/sub/http.go

@@ -19,10 +19,10 @@ import (
 	"os"
 	"strings"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -47,7 +47,7 @@ var httpCmd = &cobra.Command{
 	Use:   "http",
 	Short: "Run frpc with a single http proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/https.go

@@ -43,7 +43,7 @@ var httpsCmd = &cobra.Command{
 	Use:   "https",
 	Short: "Run frpc with a single https proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/reload.go

@@ -17,14 +17,14 @@ package sub
 import (
 	"encoding/base64"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"strings"
 
-	"github.com/fatedier/frp/pkg/config"
-
 	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
 )
 
 func init() {
@@ -35,19 +35,13 @@ var reloadCmd = &cobra.Command{
 	Use:   "reload",
 	Short: "Hot-Reload frpc configuration",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		iniContent, err := config.GetRenderedConfFromFile(cfgFile)
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)
 		}
 
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeIni, iniContent)
+		err = reload(cfg)
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
-		}
-
-		err = reload(clientCfg)
 		if err != nil {
 			fmt.Printf("frpc reload error: %v\n", err)
 			os.Exit(1)
@@ -82,7 +76,7 @@ func reload(clientCfg config.ClientCommonConf) error {
 		return nil
 	}
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

cmd/frpc/sub/root.go

@@ -15,23 +15,24 @@
 package sub
 
 import (
-	"context"
 	"fmt"
+	"io/fs"
 	"net"
 	"os"
 	"os/signal"
+	"path/filepath"
 	"strconv"
-	"strings"
+	"sync"
 	"syscall"
 	"time"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/client"
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/util/log"
 	"github.com/fatedier/frp/pkg/util/version"
-
-	"github.com/spf13/cobra"
 )
 
 const (
@@ -41,6 +42,7 @@ const (
 
 var (
 	cfgFile     string
+	cfgDir      string
 	showVersion bool
 
 	serverAddr      string
@@ -72,15 +74,12 @@ var (
 	bindPort          int
 
 	tlsEnable bool
-
-	kcpDoneCh chan struct{}
 )
 
 func init() {
 	rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "./frpc.ini", "config file of frpc")
+	rootCmd.PersistentFlags().StringVarP(&cfgDir, "config_dir", "", "", "config directory, run one frpc service for each file in config directory")
 	rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
-
-	kcpDoneCh = make(chan struct{})
 }
 
 func RegisterCommonFlags(cmd *cobra.Command) {
@@ -104,6 +103,32 @@ var rootCmd = &cobra.Command{
 			return nil
 		}
 
+		// If cfgDir is not empty, run multiple frpc service for each config file in cfgDir.
+		// Note that it's only designed for testing. It's not guaranteed to be stable.
+		if cfgDir != "" {
+			var wg sync.WaitGroup
+			_ = filepath.WalkDir(cfgDir, func(path string, d fs.DirEntry, err error) error {
+				if err != nil {
+					return nil
+				}
+				if d.IsDir() {
+					return nil
+				}
+				wg.Add(1)
+				time.Sleep(time.Millisecond)
+				go func() {
+					defer wg.Done()
+					err := runClient(path)
+					if err != nil {
+						fmt.Printf("frpc service error for config file [%s]\n", path)
+					}
+				}()
+				return nil
+			})
+			wg.Wait()
+			return nil
+		}
+
 		// Do not show command usage here.
 		err := runClient(cfgFile)
 		if err != nil {
@@ -120,32 +145,12 @@ func Execute() {
 	}
 }
 
-func handleSignal(svr *client.Service) {
+func handleSignal(svr *client.Service, doneCh chan struct{}) {
-	ch := make(chan os.Signal)
+	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
 	<-ch
-	svr.Close()
+	svr.GracefulClose(500 * time.Millisecond)
-	time.Sleep(250 * time.Millisecond)
+	close(doneCh)
-	close(kcpDoneCh)
-}
-
-func parseClientCommonCfg(fileType int, source []byte) (cfg config.ClientCommonConf, err error) {
-	if fileType == CfgFileTypeIni {
-		cfg, err = config.UnmarshalClientConfFromIni(source)
-	} else if fileType == CfgFileTypeCmd {
-		cfg, err = parseClientCommonCfgFromCmd()
-	}
-	if err != nil {
-		return
-	}
-
-	cfg.Complete()
-	err = cfg.Validate()
-	if err != nil {
-		err = fmt.Errorf("Parse config error: %v", err)
-		return
-	}
-	return
 }
 
 func parseClientCommonCfgFromCmd() (cfg config.ClientCommonConf, err error) {
@@ -176,26 +181,19 @@ func parseClientCommonCfgFromCmd() (cfg config.ClientCommonConf, err error) {
 	cfg.Token = token
 	cfg.TLSEnable = tlsEnable
 
+	cfg.Complete()
+	if err = cfg.Validate(); err != nil {
+		err = fmt.Errorf("parse config error: %v", err)
+		return
+	}
 	return
 }
 
-func runClient(cfgFilePath string) (err error) {
+func runClient(cfgFilePath string) error {
-	var content []byte
+	cfg, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(cfgFilePath)
-	content, err = config.GetRenderedConfFromFile(cfgFilePath)
 	if err != nil {
 		return err
 	}
-
-	cfg, err := parseClientCommonCfg(CfgFileTypeIni, content)
-	if err != nil {
-		return err
-	}
-
-	pxyCfgs, visitorCfgs, err := config.LoadAllProxyConfsFromIni(cfg.User, content, cfg.Start)
-	if err != nil {
-		return err
-	}
-
 	return startService(cfg, pxyCfgs, visitorCfgs, cfgFilePath)
 }
 
@@ -205,22 +203,12 @@ func startService(
 	visitorCfgs map[string]config.VisitorConf,
 	cfgFile string,
 ) (err error) {
-
 	log.InitLog(cfg.LogWay, cfg.LogFile, cfg.LogLevel,
 		cfg.LogMaxDays, cfg.DisableLogColor)
 
-	if cfg.DNSServer != "" {
+	if cfgFile != "" {
-		s := cfg.DNSServer
+		log.Trace("start frpc service for config file [%s]", cfgFile)
-		if !strings.Contains(s, ":") {
+		defer log.Trace("frpc service for config file [%s] stopped", cfgFile)
-			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, errRet := client.NewService(cfg, pxyCfgs, visitorCfgs, cfgFile)
 	if errRet != nil {
@@ -228,13 +216,14 @@ func startService(
 		return
 	}
 
+	kcpDoneCh := make(chan struct{})
 	// Capture the exit signal if we use kcp.
 	if cfg.Protocol == "kcp" {
-		go handleSignal(svr)
+		go handleSignal(svr, kcpDoneCh)
 	}
 
 	err = svr.Run()
-	if cfg.Protocol == "kcp" {
+	if err == nil && cfg.Protocol == "kcp" {
 		<-kcpDoneCh
 	}
 	return

cmd/frpc/sub/status.go

@@ -18,16 +18,16 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"strings"
 
-	"github.com/fatedier/frp/client"
-	"github.com/fatedier/frp/pkg/config"
-
 	"github.com/rodaine/table"
 	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/pkg/config"
 )
 
 func init() {
@@ -38,20 +38,13 @@ 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)
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)
 		}
 
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeIni, iniContent)
+		if err = status(cfg); err != nil {
-		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
-		}
-
-		err = status(clientCfg)
-		if err != nil {
 			fmt.Printf("frpc get status error: %v\n", err)
 			os.Exit(1)
 		}
@@ -84,7 +77,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
 	}
 
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}
@@ -96,7 +89,7 @@ func status(clientCfg config.ClientCommonConf) error {
 
 	fmt.Println("Proxy Status...")
 	if len(res.TCP) > 0 {
-		fmt.Printf("TCP")
+		fmt.Println("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)
@@ -105,7 +98,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		fmt.Println("")
 	}
 	if len(res.UDP) > 0 {
-		fmt.Printf("UDP")
+		fmt.Println("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)
@@ -114,7 +107,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		fmt.Println("")
 	}
 	if len(res.HTTP) > 0 {
-		fmt.Printf("HTTP")
+		fmt.Println("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)
@@ -123,7 +116,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		fmt.Println("")
 	}
 	if len(res.HTTPS) > 0 {
-		fmt.Printf("HTTPS")
+		fmt.Println("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)
@@ -132,7 +125,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		fmt.Println("")
 	}
 	if len(res.STCP) > 0 {
-		fmt.Printf("STCP")
+		fmt.Println("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)
@@ -141,7 +134,7 @@ func status(clientCfg config.ClientCommonConf) error {
 		fmt.Println("")
 	}
 	if len(res.XTCP) > 0 {
-		fmt.Printf("XTCP")
+		fmt.Println("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)

cmd/frpc/sub/stcp.go

@@ -18,10 +18,10 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -45,7 +45,7 @@ var stcpCmd = &cobra.Command{
 	Use:   "stcp",
 	Short: "Run frpc with a single stcp proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/sudp.go

@@ -18,10 +18,10 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -45,7 +45,7 @@ var sudpCmd = &cobra.Command{
 	Use:   "sudp",
 	Short: "Run frpc with a single sudp proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/tcp.go

@@ -41,7 +41,7 @@ var tcpCmd = &cobra.Command{
 	Use:   "tcp",
 	Short: "Run frpc with a single tcp proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/tcpmux.go

@@ -44,7 +44,7 @@ var tcpMuxCmd = &cobra.Command{
 	Use:   "tcpmux",
 	Short: "Run frpc with a single tcpmux proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/udp.go

@@ -18,10 +18,10 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -41,7 +41,7 @@ var udpCmd = &cobra.Command{
 	Use:   "udp",
 	Short: "Run frpc with a single udp proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frpc/sub/verify.go

@@ -0,0 +1,43 @@
+// Copyright 2021 The frp Authors
+//
+// 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/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(verifyCmd)
+}
+
+var verifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify that the configures is valid",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		_, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		fmt.Printf("frpc: the configuration file %s syntax is ok\n", cfgFile)
+		return nil
+	},
+}

cmd/frpc/sub/xtcp.go

@@ -18,10 +18,10 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -45,7 +45,7 @@ var xtcpCmd = &cobra.Command{
 	Use:   "xtcp",
 	Short: "Run frpc with a single xtcp proxy",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, nil)
+		clientCfg, err := parseClientCommonCfgFromCmd()
 		if err != nil {
 			fmt.Println(err)
 			os.Exit(1)

cmd/frps/main.go

@@ -20,7 +20,7 @@ import (
 
 	"github.com/fatedier/golib/crypto"
 
-	_ "github.com/fatedier/frp/assets/frps/statik"
+	_ "github.com/fatedier/frp/assets/frps"
 	_ "github.com/fatedier/frp/pkg/metrics"
 )
 

cmd/frps/root.go

@@ -18,14 +18,14 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/spf13/cobra"
+
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/config"
 	"github.com/fatedier/frp/pkg/util/log"
 	"github.com/fatedier/frp/pkg/util/util"
 	"github.com/fatedier/frp/pkg/util/version"
 	"github.com/fatedier/frp/server"
-
-	"github.com/spf13/cobra"
 )
 
 const (
@@ -37,31 +37,31 @@ var (
 	cfgFile     string
 	showVersion bool
 
-	bindAddr          string
+	bindAddr             string
-	bindPort          int
+	bindPort             int
-	bindUDPPort       int
+	bindUDPPort          int
-	kcpBindPort       int
+	kcpBindPort          int
-	proxyBindAddr     string
+	proxyBindAddr        string
-	vhostHTTPPort     int
+	vhostHTTPPort        int
-	vhostHTTPSPort    int
+	vhostHTTPSPort       int
-	vhostHTTPTimeout  int64
+	vhostHTTPTimeout     int64
-	dashboardAddr     string
+	dashboardAddr        string
-	dashboardPort     int
+	dashboardPort        int
-	dashboardUser     string
+	dashboardUser        string
-	dashboardPwd      string
+	dashboardPwd         string
-	enablePrometheus  bool
+	enablePrometheus     bool
-	assetsDir         string
+	logFile              string
-	logFile           string
+	logLevel             string
-	logLevel          string
+	logMaxDays           int64
-	logMaxDays        int64
+	disableLogColor      bool
-	disableLogColor   bool
+	token                string
-	token             string
+	subDomainHost        string
-	subDomainHost     string
+	allowPorts           string
-	tcpMux            bool
+	maxPortsPerClient    int64
-	allowPorts        string
+	tlsOnly              bool
-	maxPoolCount      int64
+	dashboardTLSMode     bool
-	maxPortsPerClient int64
+	dashboardTLSCertFile string
-	tlsOnly           bool
+	dashboardTLSKeyFile  string
 )
 
 func init() {
@@ -91,6 +91,9 @@ func init() {
 	rootCmd.PersistentFlags().StringVarP(&allowPorts, "allow_ports", "", "", "allow ports")
 	rootCmd.PersistentFlags().Int64VarP(&maxPortsPerClient, "max_ports_per_client", "", 0, "max ports per client")
 	rootCmd.PersistentFlags().BoolVarP(&tlsOnly, "tls_only", "", false, "frps tls only")
+	rootCmd.PersistentFlags().BoolVarP(&dashboardTLSMode, "dashboard_tls_mode", "", false, "dashboard tls mode")
+	rootCmd.PersistentFlags().StringVarP(&dashboardTLSCertFile, "dashboard_tls_cert_file", "", "", "dashboard tls cert file")
+	rootCmd.PersistentFlags().StringVarP(&dashboardTLSKeyFile, "dashboard_tls_key_file", "", "", "dashboard tls key file")
 }
 
 var rootCmd = &cobra.Command{
@@ -145,7 +148,7 @@ func parseServerCommonCfg(fileType int, source []byte) (cfg config.ServerCommonC
 	cfg.Complete()
 	err = cfg.Validate()
 	if err != nil {
-		err = fmt.Errorf("Parse config error: %v", err)
+		err = fmt.Errorf("parse config error: %v", err)
 		return
 	}
 	return
@@ -167,6 +170,9 @@ func parseServerCommonCfgFromCmd() (cfg config.ServerCommonConf, err error) {
 	cfg.DashboardUser = dashboardUser
 	cfg.DashboardPwd = dashboardPwd
 	cfg.EnablePrometheus = enablePrometheus
+	cfg.DashboardTLSCertFile = dashboardTLSCertFile
+	cfg.DashboardTLSKeyFile = dashboardTLSKeyFile
+	cfg.DashboardTLSMode = dashboardTLSMode
 	cfg.LogFile = logFile
 	cfg.LogLevel = logLevel
 	cfg.LogMaxDays = logMaxDays
@@ -180,7 +186,7 @@ func parseServerCommonCfgFromCmd() (cfg config.ServerCommonConf, err error) {
 		// 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)
+			err = fmt.Errorf("parse conf error: allow_ports: %v", errRet)
 			return
 		}
 

cmd/frps/verify.go

@@ -0,0 +1,53 @@
+// Copyright 2021 The frp Authors
+//
+// 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/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(verifyCmd)
+}
+
+var verifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify that the configures is valid",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if cfgFile == "" {
+			fmt.Println("no config file is specified")
+			return nil
+		}
+		iniContent, err := config.GetRenderedConfFromFile(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		_, err = parseServerCommonCfg(CfgFileTypeIni, iniContent)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		fmt.Printf("frps: the configuration file %s syntax is ok\n", cfgFile)
+		return nil
+	},
+}

conf/frpc_full.ini

@@ -6,6 +6,13 @@
 server_addr = 0.0.0.0
 server_port = 7000
 
+# The maximum amount of time a dial to server will wait for a connect to complete. Default value is 10 seconds.
+# dial_server_timeout = 10
+
+# dial_server_keepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+# If negative, keep-alive probes are disabled.
+# dial_server_keepalive = 7200
+
 # if you want to connect frps by http proxy or socks5 proxy or ntlm 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
@@ -48,6 +55,12 @@ oidc_audience =
 # It will be used to get an OIDC token if AuthenticationMethod == "oidc". By default, this value is "".
 oidc_token_endpoint_url =
 
+# oidc_additional_xxx specifies additional parameters to be sent to the OIDC Token Endpoint.
+# For example, if you want to specify the "audience" parameter, you can set as follow.
+# frp will add "audience=<value>" "var1=<value>" to the additional parameters.
+# oidc_additional_audience = https://dev.auth.com/api/v2/
+# oidc_additional_var1 = foobar
+
 # set admin address for control frpc's action by http api such as reload
 admin_addr = 127.0.0.1
 admin_port = 7400
@@ -60,7 +73,11 @@ admin_pwd = admin
 pool_count = 5
 
 # if tcp stream multiplexing is used, default is true, it must be same with frps
-tcp_mux = true
+# tcp_mux = true
+
+# specify keep alive interval for tcp mux.
+# only valid if tcp_mux is true.
+# tcp_mux_keepalive_interval = 60
 
 # your proxy name will be changed to {user}.{proxy}
 user = your_name
@@ -73,6 +90,10 @@ login_fail_exit = true
 # now it supports tcp, kcp and websocket, default is tcp
 protocol = tcp
 
+# set client binding ip when connect server, default is empty.
+# only when protocol = tcp or websocket, the value will be used.
+connect_server_local_ip = 0.0.0.0
+
 # if tls_enable is true, frpc will connect frps by tls
 tls_enable = true
 
@@ -84,12 +105,13 @@ tls_enable = true
 # 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 seperated by ','
+# proxy names you want to start separated 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
+# The default value of heartbeat_interval is 10 and heartbeat_timeout is 90. Set negative value
+# to disable it.
 # heartbeat_interval = 30
 # heartbeat_timeout = 90
 
@@ -102,6 +124,17 @@ meta_var2 = 234
 # It affects the udp and sudp proxy.
 udp_packet_size = 1500
 
+# include other config files for proxies.
+# includes = ./confd/*.ini
+
+# By default, frpc will connect frps with first custom byte if tls is enabled.
+# If DisableCustomTLSFirstByte is true, frpc will not send that custom byte.
+disable_custom_tls_first_byte = false
+
+# Enable golang pprof handlers in admin listener.
+# Admin port must be set first.
+pprof_enable = false
+
 # '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]
@@ -178,11 +211,13 @@ use_compression = true
 # 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
+# if domain for frps is frps.com, then you can access [web01] proxy by URL http://web01.frps.com
 subdomain = web01
-custom_domains = web02.yourdomain.com
+custom_domains = web01.yourdomain.com
 # locations is only available for http type
 locations = /,/pic
+# route requests to this service if http basic auto user is abc
+# route_by_http_user = abc
 host_header_rewrite = example.com
 # params with prefix "header_" will be used to update http request headers
 header_X-From-Where = frp
@@ -315,3 +350,4 @@ multiplexer = httpconnect
 local_ip = 127.0.0.1
 local_port = 10701
 custom_domains = tunnel1
+# route_by_http_user = user1

conf/frps_full.ini

@@ -30,16 +30,24 @@ vhost_https_port = 443
 # HTTP CONNECT requests. By default, this value is 0.
 # tcpmux_httpconnect_port = 1337
 
+# If tcpmux_passthrough is true, frps won't do any update on traffic.
+# tcpmux_passthrough = false
+
 # 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 and passwd for basic auth protect
 dashboard_user = admin
 dashboard_pwd = admin
 
+# dashboard TLS mode
+dashboard_tls_mode = false
+# dashboard_tls_cert_file = server.crt
+# dashboard_tls_key_file = server.key
+
 # enable_prometheus will export prometheus metrics on {dashboard_addr}:{dashboard_port} in /metrics api.
 enable_prometheus = true
 
@@ -86,13 +94,12 @@ oidc_audience =
 # By default, this value is false.
 oidc_skip_expiry_check = false
 
-
 # oidc_skip_issuer_check specifies whether to skip checking if the OIDC token's issuer claim matches the issuer specified in OidcIssuer.
 # By default, this value is false.
 oidc_skip_issuer_check = false
 
 # heartbeat configure, it's not recommended to modify the default value
-# the default value of heartbeat_timeout is 90
+# the default value of heartbeat_timeout is 90. Set negative value to disable it.
 # heartbeat_timeout = 90
 
 # user_conn_timeout configure, it's not recommended to modify the default value
@@ -120,7 +127,15 @@ tls_only = false
 subdomain_host = frps.com
 
 # if tcp stream multiplexing is used, default is true
-tcp_mux = true
+# tcp_mux = true
+
+# specify keep alive interval for tcp mux.
+# only valid if tcp_mux is true.
+# tcp_mux_keepalive_interval = 60
+
+# tcp_keepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+# If negative, keep-alive probes are disabled.
+# tcp_keepalive = 7200
 
 # custom 404 page for HTTP requests
 # custom_404_page = /path/to/404.html
@@ -130,6 +145,10 @@ tcp_mux = true
 # It affects the udp and sudp proxy.
 udp_packet_size = 1500
 
+# Enable golang pprof handlers in dashboard listener.
+# Dashboard port must be set first
+pprof_enable = false
+
 [plugin.user-manager]
 addr = 127.0.0.1:9000
 path = /handler

conf/systemd/frpc.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Frp Client Service
-After=network.target
-
-[Service]
-Type=simple
-User=nobody
-Restart=on-failure
-RestartSec=5s
-ExecStart=/usr/bin/frpc -c /etc/frp/frpc.ini
-ExecReload=/usr/bin/frpc reload -c /etc/frp/frpc.ini
-
-[Install]
-WantedBy=multi-user.target

conf/systemd/frpc@.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Frp Client Service
-After=network.target
-
-[Service]
-Type=idle
-User=nobody
-Restart=on-failure
-RestartSec=5s
-ExecStart=/usr/bin/frpc -c /etc/frp/%i.ini
-ExecReload=/usr/bin/frpc reload -c /etc/frp/%i.ini
-
-[Install]
-WantedBy=multi-user.target

conf/systemd/frps.service

@@ -1,13 +0,0 @@
-[Unit]
-Description=Frp Server Service
-After=network.target
-
-[Service]
-Type=simple
-User=nobody
-Restart=on-failure
-RestartSec=5s
-ExecStart=/usr/bin/frps -c /etc/frp/frps.ini
-
-[Install]
-WantedBy=multi-user.target

conf/systemd/frps@.service

@@ -1,13 +0,0 @@
-[Unit]
-Description=Frp Server Service
-After=network.target
-
-[Service]
-Type=simple
-User=nobody
-Restart=on-failure
-RestartSec=5s
-ExecStart=/usr/bin/frps -c /etc/frp/%i.ini
-
-[Install]
-WantedBy=multi-user.target

doc/server_plugin.md

@@ -70,7 +70,7 @@ The response can look like any of the following:
 
 ### Operation
 
-Currently `Login`, `NewProxy`, `Ping`, `NewWorkConn` and `NewUserConn` operations are supported.
+Currently `Login`, `NewProxy`, `CloseProxy`, `Ping`, `NewWorkConn` and `NewUserConn` operations are supported.
 
 #### Login
 
@@ -88,7 +88,8 @@ Client login operation
         "privilege_key": <string>,
         "run_id": <string>,
         "pool_count": <int>,
-        "metas": map<string>string
+        "metas": map<string>string,
+        "client_address": <string>
     }
 }
 ```
@@ -135,6 +136,26 @@ Create new proxy
 }
 ```
 
+#### CloseProxy
+
+A previously created proxy is closed.
+
+Please note that one request will be sent for every proxy that is closed, do **NOT** use this
+if you have too many proxies bound to a single client, as this may exhaust the server's resources.
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>
+    }
+}
+```
+
 #### Ping
 
 Heartbeat from frpc

doc/server_plugin_zh.md

@@ -1,228 +0,0 @@
-### 服务端管理插件
-
-frp 管理插件的作用是在不侵入自身代码的前提下，扩展 frp 服务端的能力。
-
-frp 管理插件会以单独进程的形式运行，并且监听在一个端口上，对外提供 RPC 接口，响应 frps 的请求。
-
-frps 在执行某些操作前，会根据配置向管理插件发送 RPC 请求，根据管理插件的响应来执行相应的操作。
-
-### RPC 请求
-
-管理插件接收到操作请求后，可以给出三种回应。
-
-* 拒绝操作，需要返回拒绝操作的原因。
-* 允许操作，不需要修改操作内容。
-* 允许操作，对操作请求进行修改后，返回修改后的内容。
-
-### 接口
-
-接口路径可以在 frps 配置中为每个插件单独配置，这里以 `/handler` 为例。
-
-Request
-
-```
-POST /handler
-{
-    "version": "0.1.0",
-    "op": "Login",
-    "content": {
-        ... // 具体的操作信息
-    }
-}
-
-请求 Header
-X-Frp-Reqid: 用于追踪请求
-```
-
-Response
-
-非 200 的返回都认为是请求异常。
-
-拒绝执行操作
-
-```
-{
-   "reject": true,
-   "reject_reason": "invalid user"
-}
-```
-
-允许且内容不需要变动
-
-```
-{
-    "reject": false,
-    "unchange": true
-}
-```
-
-允许且需要替换操作内容
-
-```
-{
-    "unchange": "false",
-    "content": {
-        ... // 替换后的操作信息，格式必须和请求时的一致
-    }
-}
-```
-
-### 操作类型
-
-目前插件支持管理的操作类型有 `Login`、`NewProxy`、`Ping`、`NewWorkConn` 和 `NewUserConn`。
-
-#### Login
-
-用户登录操作信息
-
-```
-{
-    "content": {
-        "version": <string>,
-        "hostname": <string>,
-        "os": <string>,
-        "arch": <string>,
-        "user": <string>,
-        "timestamp": <int64>,
-        "privilege_key": <string>,
-        "run_id": <string>,
-        "pool_count": <int>,
-        "metas": map<string>string
-    }
-}
-```
-
-#### NewProxy
-
-创建代理的相关信息
-
-```
-{
-    "content": {
-        "user": {
-            "user": <string>,
-            "metas": map<string>string
-        },
-        "proxy_name": <string>,
-        "proxy_type": <string>,
-        "use_encryption": <bool>,
-        "use_compression": <bool>,
-        "group": <string>,
-        "group_key": <string>,
-
-        // tcp and udp only
-        "remote_port": <int>,
-
-        // http and https only
-        "custom_domains": []<string>,
-        "subdomain": <string>,
-        "locations": <string>,
-        "http_user": <string>,
-        "http_pwd": <string>,
-        "host_header_rewrite": <string>,
-        "headers": map<string>string,
-
-        "metas": map<string>string
-    }
-}
-```
-
-#### Ping
-
-心跳相关信息
-
-```
-{
-    "content": {
-        "user": {
-            "user": <string>,
-            "metas": map<string>string
-            "run_id": <string>
-        },
-        "timestamp": <int64>,
-        "privilege_key": <string>
-    }
-}
-```
-
-#### NewWorkConn
-
-新增 `frpc` 连接相关信息
-
-```
-{
-    "content": {
-        "user": {
-            "user": <string>,
-            "metas": map<string>string
-            "run_id": <string>
-        },
-        "run_id": <string>
-        "timestamp": <int64>,
-        "privilege_key": <string>
-    }
-}
-```
-
-#### NewUserConn
-
-新增 `proxy` 连接相关信息 (支持 `tcp`、`stcp`、`https` 和 `tcpmux` 协议)。
-
-```
-{
-    "content": {
-        "user": {
-            "user": <string>,
-            "metas": map<string>string
-            "run_id": <string>
-        },
-        "proxy_name": <string>,
-        "proxy_type": <string>,
-        "remote_addr": <string>
-    }
-}
-```
-
-
-### frps 中插件配置
-
-```ini
-[common]
-bind_port = 7000
-
-[plugin.user-manager]
-addr = 127.0.0.1:9000
-path = /handler
-ops = Login
-
-[plugin.port-manager]
-addr = 127.0.0.1:9001
-path = /handler
-ops = NewProxy
-```
-
-addr: 插件监听的网络地址。
-path: 插件监听的 HTTP 请求路径。
-ops: 插件需要处理的操作列表，多个 op 以英文逗号分隔。
-
-### 元数据
-
-为了减少 frps 的代码修改，同时提高管理插件的扩展能力，在 frpc 的配置文件中引入自定义元数据的概念。元数据会在调用 RPC 请求时发送给插件。
-
-元数据以 `meta_` 开头，可以配置多个，元数据分为两种，一种配置在 `common` 下，一种配置在各个 proxy 中。
-
-```
-# frpc.ini
-[common]
-server_addr = 127.0.0.1
-server_port = 7000
-user = fake
-meta_token = fake
-meta_version = 1.0.0
-
-[ssh]
-type = tcp
-local_port = 22
-remote_port = 6000
-meta_id = 123
-```

dockerfiles/Dockerfile-for-frpc

@@ -1,14 +1,12 @@
-FROM alpine:3.12.0 AS temp
+FROM golang:1.19 AS building
 
-COPY bin/frpc /tmp
+COPY . /building
+WORKDIR /building
 
-RUN chmod -R 777 /tmp/frpc
+RUN make frpc
 
+FROM alpine:3
 
-FROM alpine:3.12.0
+COPY --from=building /building/bin/frpc /usr/bin/frpc
-
-WORKDIR /app
-
-COPY --from=temp /tmp/frpc /usr/bin
 
 ENTRYPOINT ["/usr/bin/frpc"]

dockerfiles/Dockerfile-for-frps

@@ -1,14 +1,12 @@
-FROM alpine:3.12.0 AS temp
+FROM golang:1.19 AS building
 
-COPY bin/frps /tmp
+COPY . /building
+WORKDIR /building
 
-RUN chmod -R 777 /tmp/frps
+RUN make frps
 
+FROM alpine:3
 
-FROM alpine:3.12.0
+COPY --from=building /building/bin/frps /usr/bin/frps
-
-WORKDIR /app
-
-COPY --from=temp /tmp/frps /usr/bin
 
 ENTRYPOINT ["/usr/bin/frps"]

go.mod

@@ -1,40 +1,67 @@
 module github.com/fatedier/frp
 
-go 1.16
+go 1.18
 
 require (
 	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
 	github.com/coreos/go-oidc v2.2.1+incompatible
 	github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb
-	github.com/fatedier/golib v0.1.1-0.20200901083111-1f870741e185
+	github.com/fatedier/golib v0.1.1-0.20220321042308-c306138b83ac
 	github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible
-	github.com/google/uuid v1.1.1
+	github.com/go-playground/validator/v10 v10.11.0
-	github.com/gorilla/mux v1.7.3
+	github.com/google/uuid v1.3.0
-	github.com/gorilla/websocket v1.4.0
+	github.com/gorilla/mux v1.8.0
-	github.com/hashicorp/yamux v0.0.0-20181012175058-2f1d1f20f75d
+	github.com/gorilla/websocket v1.5.0
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/hashicorp/yamux v0.1.1
-	github.com/klauspost/cpuid v1.2.0 // indirect
+	github.com/onsi/ginkgo v1.16.4
-	github.com/klauspost/reedsolomon v1.9.1 // indirect
+	github.com/onsi/gomega v1.20.2
-	github.com/mattn/go-runewidth v0.0.4 // indirect
+	github.com/pires/go-proxyproto v0.6.2
-	github.com/onsi/ginkgo v1.12.3
+	github.com/prometheus/client_golang v1.13.0
-	github.com/onsi/gomega v1.10.1
+	github.com/rodaine/table v1.0.1
-	github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc
+	github.com/spf13/cobra v1.1.3
-	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
+	github.com/stretchr/testify v1.7.0
-	github.com/prometheus/client_golang v1.4.1
+	golang.org/x/net v0.0.0-20220722155237-a158d28d115b
-	github.com/rakyll/statik v0.1.1
+	golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b
-	github.com/rodaine/table v1.0.0
+	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
-	github.com/smartystreets/goconvey v1.6.4 // indirect
+	gopkg.in/ini.v1 v1.67.0
-	github.com/spf13/cobra v0.0.3
+	k8s.io/apimachinery v0.25.0
-	github.com/stretchr/testify v1.4.0
+	k8s.io/client-go v0.25.0
-	github.com/templexxx/cpufeat v0.0.0-20170927014610-3794dfbfb047 // indirect
+)
-	github.com/templexxx/xor v0.0.0-20170926022130-0af8e873c554 // indirect
+
-	github.com/tjfoc/gmsm v0.0.0-20171124023159-98aa888b79d8 // indirect
+require (
-	github.com/xtaci/lossyconn v0.0.0-20190602105132-8df528c0c9ae // indirect
+	github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c // indirect
-	golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7
+	github.com/beorn7/perks v1.0.1 // indirect
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
-	golang.org/x/time v0.0.0-20191024005414-555d28b269f0
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
-	gopkg.in/ini.v1 v1.62.0
+	github.com/go-playground/locales v0.14.0 // indirect
-	gopkg.in/square/go-jose.v2 v2.4.1 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
-	k8s.io/apimachinery v0.18.3
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/google/go-cmp v0.5.8 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.6 // indirect
+	github.com/klauspost/reedsolomon v1.9.15 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/nxadm/tail v1.4.8 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 // indirect
+	github.com/templexxx/xor v0.0.0-20191217153810-f85b25db303b // indirect
+	github.com/tjfoc/gmsm v1.4.1 // indirect
+	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd // indirect
+	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
+	golang.org/x/text v0.3.7 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/square/go-jose.v2 v2.4.1 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed // indirect
 )

go.sum

@@ -1,269 +1,718 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
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+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
+cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
+cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
+cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
+cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
+cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
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 github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c h1:/IBSNwUN8+eKzUzbJPqhK839ygXJ82sde8x3ogr6R28=
 github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU=
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 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
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 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
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-k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-k8s.io/kube-openapi v0.0.0-20200410145947-61e04a5be9a6/go.mod h1:GRQhZsXIAJ1xR0C9bd8UpWHZ5plfAS9fzPjJuQ6JL3E=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-sigs.k8s.io/structured-merge-diff/v3 v3.0.0-20200116222232-67a7b8c61874/go.mod h1:PlARxl6Hbt/+BC80dRLi1qAmnMqwqDg62YvvVkZjemw=
+honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-sigs.k8s.io/structured-merge-diff/v3 v3.0.0/go.mod h1:PlARxl6Hbt/+BC80dRLi1qAmnMqwqDg62YvvVkZjemw=
+honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+k8s.io/apimachinery v0.25.0 h1:MlP0r6+3XbkUG2itd6vp3oxbtdQLQI94fD5gCS+gnoU=
+k8s.io/apimachinery v0.25.0/go.mod h1:qMx9eAk0sZQGsXGu86fab8tZdffHbwUfsvzqKn4mfB0=
+k8s.io/client-go v0.25.0 h1:CVWIaCETLMBNiTUta3d5nzRbXvY5Hy9Dpl+VvREpu5E=
+k8s.io/client-go v0.25.0/go.mod h1:lxykvypVfKilxhTklov0wz1FoaUZ8X4EwbhS6rpRfN8=
+k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
+k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed h1:jAne/RjBTyawwAy0utX5eqigAwz/lQhTmy+Hr/Cpue4=
+k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

hack/run-e2e.sh

@@ -5,11 +5,16 @@ ROOT=$(unset CDPATH && cd $(dirname "${BASH_SOURCE[0]}")/.. && pwd)
 which ginkgo &> /dev/null
 if [ $? -ne 0 ]; then
     echo "ginkgo not found, try to install..."
-    go install github.com/onsi/ginkgo/ginkgo
+    go install github.com/onsi/ginkgo/ginkgo@v1.16.5
 fi
 
 debug=false
 if [ x${DEBUG} == x"true" ]; then
     debug=true
 fi
-ginkgo -nodes=4 ${ROOT}/test/e2e -- -frpc-path=${ROOT}/bin/frpc -frps-path=${ROOT}/bin/frps -log-level=debug -debug=${debug}
+logLevel=debug
+if [ x${LOG_LEVEL} != x"" ]; then
+    logLevel=${LOG_LEVEL}
+fi
+
+ginkgo -nodes=8 -slowSpecThreshold=20 ${ROOT}/test/e2e -- -frpc-path=${ROOT}/bin/frpc -frps-path=${ROOT}/bin/frps -log-level=${logLevel} -debug=${debug}

package.sh

@@ -15,7 +15,7 @@ rm -rf ./release/packages
 mkdir -p ./release/packages
 
 os_all='linux windows darwin freebsd'
-arch_all='386 amd64 arm arm64 mips64 mips64le mips mipsle'
+arch_all='386 amd64 arm arm64 mips64 mips64le mips mipsle riscv64'
 
 cd ./release
 

pkg/auth/oidc.go

@@ -18,10 +18,10 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/fatedier/frp/pkg/msg"
-
 	"github.com/coreos/go-oidc"
 	"golang.org/x/oauth2/clientcredentials"
+
+	"github.com/fatedier/frp/pkg/msg"
 )
 
 type OidcClientConfig struct {
@@ -34,20 +34,26 @@ type OidcClientConfig struct {
 	// is "".
 	OidcClientSecret string `ini:"oidc_client_secret" json:"oidc_client_secret"`
 	// OidcAudience specifies the audience of the token in OIDC authentication
-	//if AuthenticationMethod == "oidc". By default, this value is "".
+	// if AuthenticationMethod == "oidc". By default, this value is "".
 	OidcAudience string `ini:"oidc_audience" json:"oidc_audience"`
 	// OidcTokenEndpointURL specifies the URL which implements OIDC Token Endpoint.
 	// It will be used to get an OIDC token if AuthenticationMethod == "oidc".
 	// By default, this value is "".
 	OidcTokenEndpointURL string `ini:"oidc_token_endpoint_url" json:"oidc_token_endpoint_url"`
+
+	// OidcAdditionalEndpointParams specifies additional parameters to be sent
+	// this field will be transfer to map[string][]string in OIDC token generator
+	// The field will be set by prefix "oidc_additional_"
+	OidcAdditionalEndpointParams map[string]string `ini:"-" json:"oidc_additional_endpoint_params"`
 }
 
 func getDefaultOidcClientConf() OidcClientConfig {
 	return OidcClientConfig{
-		OidcClientID:         "",
+		OidcClientID:                 "",
-		OidcClientSecret:     "",
+		OidcClientSecret:             "",
-		OidcAudience:         "",
+		OidcAudience:                 "",
-		OidcTokenEndpointURL: "",
+		OidcTokenEndpointURL:         "",
+		OidcAdditionalEndpointParams: make(map[string]string),
 	}
 }
 
@@ -88,11 +94,17 @@ type OidcAuthProvider struct {
 }
 
 func NewOidcAuthSetter(baseCfg BaseConfig, cfg OidcClientConfig) *OidcAuthProvider {
+	eps := make(map[string][]string)
+	for k, v := range cfg.OidcAdditionalEndpointParams {
+		eps[k] = []string{v}
+	}
+
 	tokenGenerator := &clientcredentials.Config{
-		ClientID:     cfg.OidcClientID,
+		ClientID:       cfg.OidcClientID,
-		ClientSecret: cfg.OidcClientSecret,
+		ClientSecret:   cfg.OidcClientSecret,
-		Scopes:       []string{cfg.OidcAudience},
+		Scopes:         []string{cfg.OidcAudience},
-		TokenURL:     cfg.OidcTokenEndpointURL,
+		TokenURL:       cfg.OidcTokenEndpointURL,
+		EndpointParams: eps,
 	}
 
 	return &OidcAuthProvider{

pkg/config/client.go

@@ -17,12 +17,13 @@ package config
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 	"strings"
 
+	"gopkg.in/ini.v1"
+
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/util/util"
-
-	"gopkg.in/ini.v1"
 )
 
 // ClientCommonConf contains information for a client service. It is
@@ -33,10 +34,19 @@ type ClientCommonConf struct {
 
 	// ServerAddr specifies the address of the server to connect to. By
 	// default, this value is "0.0.0.0".
-	ServerAddr string `ini:"server_addr" josn:"server_addr"`
+	ServerAddr string `ini:"server_addr" json:"server_addr"`
 	// ServerPort specifies the port to connect to the server on. By default,
 	// this value is 7000.
 	ServerPort int `ini:"server_port" json:"server_port"`
+	// The maximum amount of time a dial to server will wait for a connect to complete.
+	DialServerTimeout int64 `ini:"dial_server_timeout" json:"dial_server_timeout"`
+	// DialServerKeepAlive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+	// If negative, keep-alive probes are disabled.
+	DialServerKeepAlive int64 `ini:"dial_server_keepalive" json:"dial_server_keepalive"`
+	// ConnectServerLocalIP specifies the address of the client bind when it connect to server.
+	// By default, this value is empty.
+	// this value only use in TCP/Websocket protocol. Not support in KCP protocol.
+	ConnectServerLocalIP string `ini:"connect_server_local_ip" json:"connect_server_local_ip"`
 	// HTTPProxy specifies a proxy address to connect to the server through. If
 	// this value is "", the server will be connected to directly. By default,
 	// this value is read from the "http_proxy" environment variable.
@@ -68,10 +78,10 @@ type ClientCommonConf struct {
 	// is 0.
 	AdminPort int `ini:"admin_port" json:"admin_port"`
 	// AdminUser specifies the username that the admin server will use for
-	// login. By default, this value is "admin".
+	// login.
 	AdminUser string `ini:"admin_user" json:"admin_user"`
 	// AdminPwd specifies the password that the admin server will use for
-	// login. By default, this value is "admin".
+	// login.
 	AdminPwd string `ini:"admin_pwd" json:"admin_pwd"`
 	// AssetsDir specifies the local directory that the admin server will load
 	// resources from. If this value is "", assets will be loaded from the
@@ -85,6 +95,9 @@ type ClientCommonConf struct {
 	// the server must have TCP multiplexing enabled as well. By default, this
 	// value is true.
 	TCPMux bool `ini:"tcp_mux" json:"tcp_mux"`
+	// TCPMuxKeepaliveInterval specifies the keep alive interval for TCP stream multipler.
+	// If TCPMux is true, heartbeat of application layer is unnecessary because it can only rely on heartbeat in TCPMux.
+	TCPMuxKeepaliveInterval int64 `ini:"tcp_mux_keepalive_interval" json:"tcp_mux_keepalive_interval"`
 	// User specifies a prefix for proxy names to distinguish them from other
 	// clients. If this value is not "", proxy names will automatically be
 	// changed to "{user}.{proxy_name}". By default, this value is "".
@@ -100,7 +113,7 @@ type ClientCommonConf struct {
 	// all supplied proxies are enabled. By default, this value is an empty
 	// set.
 	Start []string `ini:"start" json:"start"`
-	//Start map[string]struct{} `json:"start"`
+	// Start map[string]struct{} `json:"start"`
 	// Protocol specifies the protocol to use when interacting with the server.
 	// Valid values are "tcp", "kcp" and "websocket". By default, this value
 	// is "tcp".
@@ -120,56 +133,69 @@ type ClientCommonConf struct {
 	// It only works when "tls_enable" is valid and tls configuration of server
 	// has been specified.
 	TLSTrustedCaFile string `ini:"tls_trusted_ca_file" json:"tls_trusted_ca_file"`
-	// TLSServerName specifices the custom server name of tls certificate. By
+	// TLSServerName specifies the custom server name of tls certificate. By
 	// default, server name if same to ServerAddr.
 	TLSServerName string `ini:"tls_server_name" json:"tls_server_name"`
+	// By default, frpc will connect frps with first custom byte if tls is enabled.
+	// If DisableCustomTLSFirstByte is true, frpc will not send that custom byte.
+	DisableCustomTLSFirstByte bool `ini:"disable_custom_tls_first_byte" json:"disable_custom_tls_first_byte"`
 	// HeartBeatInterval specifies at what interval heartbeats are sent to the
 	// server, in seconds. It is not recommended to change this value. By
-	// default, this value is 30.
+	// default, this value is 30. Set negative value to disable it.
 	HeartbeatInterval int64 `ini:"heartbeat_interval" json:"heartbeat_interval"`
 	// HeartBeatTimeout specifies the maximum allowed heartbeat response delay
 	// before the connection is terminated, in seconds. It is not recommended
-	// to change this value. By default, this value is 90.
+	// to change this value. By default, this value is 90. Set negative value to disable it.
 	HeartbeatTimeout int64 `ini:"heartbeat_timeout" json:"heartbeat_timeout"`
 	// Client meta info
 	Metas map[string]string `ini:"-" json:"metas"`
 	// UDPPacketSize specifies the udp packet size
 	// By default, this value is 1500
 	UDPPacketSize int64 `ini:"udp_packet_size" json:"udp_packet_size"`
+	// Include other config files for proxies.
+	IncludeConfigFiles []string `ini:"includes" json:"includes"`
+	// Enable golang pprof handlers in admin listener.
+	// Admin port must be set first.
+	PprofEnable bool `ini:"pprof_enable" json:"pprof_enable"`
 }
 
 // GetDefaultClientConf returns a client configuration with default values.
 func GetDefaultClientConf() ClientCommonConf {
 	return ClientCommonConf{
-		ClientConfig:      auth.GetDefaultClientConf(),
+		ClientConfig:            auth.GetDefaultClientConf(),
-		ServerAddr:        "0.0.0.0",
+		ServerAddr:              "0.0.0.0",
-		ServerPort:        7000,
+		ServerPort:              7000,
-		HTTPProxy:         os.Getenv("http_proxy"),
+		DialServerTimeout:       10,
-		LogFile:           "console",
+		DialServerKeepAlive:     7200,
-		LogWay:            "console",
+		HTTPProxy:               os.Getenv("http_proxy"),
-		LogLevel:          "info",
+		LogFile:                 "console",
-		LogMaxDays:        3,
+		LogWay:                  "console",
-		DisableLogColor:   false,
+		LogLevel:                "info",
-		AdminAddr:         "127.0.0.1",
+		LogMaxDays:              3,
-		AdminPort:         0,
+		DisableLogColor:         false,
-		AdminUser:         "",
+		AdminAddr:               "127.0.0.1",
-		AdminPwd:          "",
+		AdminPort:               0,
-		AssetsDir:         "",
+		AdminUser:               "",
-		PoolCount:         1,
+		AdminPwd:                "",
-		TCPMux:            true,
+		AssetsDir:               "",
-		User:              "",
+		PoolCount:               1,
-		DNSServer:         "",
+		TCPMux:                  true,
-		LoginFailExit:     true,
+		TCPMuxKeepaliveInterval: 60,
-		Start:             make([]string, 0),
+		User:                    "",
-		Protocol:          "tcp",
+		DNSServer:               "",
-		TLSEnable:         false,
+		LoginFailExit:           true,
-		TLSCertFile:       "",
+		Start:                   make([]string, 0),
-		TLSKeyFile:        "",
+		Protocol:                "tcp",
-		TLSTrustedCaFile:  "",
+		TLSEnable:               false,
-		HeartbeatInterval: 30,
+		TLSCertFile:             "",
-		HeartbeatTimeout:  90,
+		TLSKeyFile:              "",
-		Metas:             make(map[string]string),
+		TLSTrustedCaFile:        "",
-		UDPPacketSize:     1500,
+		HeartbeatInterval:       30,
+		HeartbeatTimeout:        90,
+		Metas:                   make(map[string]string),
+		UDPPacketSize:           1500,
+		IncludeConfigFiles:      make([]string, 0),
+		PprofEnable:             false,
 	}
 }
 
@@ -182,15 +208,13 @@ func (cfg *ClientCommonConf) Complete() {
 }
 
 func (cfg *ClientCommonConf) Validate() error {
-	if cfg.HeartbeatInterval <= 0 {
+	if cfg.HeartbeatTimeout > 0 && cfg.HeartbeatInterval > 0 {
-		return fmt.Errorf("invalid heartbeat_interval")
+		if cfg.HeartbeatTimeout < cfg.HeartbeatInterval {
+			return fmt.Errorf("invalid heartbeat_timeout, heartbeat_timeout is less than heartbeat_interval")
+		}
 	}
 
-	if cfg.HeartbeatTimeout < cfg.HeartbeatInterval {
+	if !cfg.TLSEnable {
-		return fmt.Errorf("invalid heartbeat_timeout, heartbeat_timeout is less than heartbeat_interval")
-	}
-
-	if cfg.TLSEnable == false {
 		if cfg.TLSCertFile != "" {
 			fmt.Println("WARNING! tls_cert_file is invalid when tls_enable is false")
 		}
@@ -208,6 +232,15 @@ func (cfg *ClientCommonConf) Validate() error {
 		return fmt.Errorf("invalid protocol")
 	}
 
+	for _, f := range cfg.IncludeConfigFiles {
+		absDir, err := filepath.Abs(filepath.Dir(f))
+		if err != nil {
+			return fmt.Errorf("include: parse directory of %s failed: %v", f, absDir)
+		}
+		if _, err := os.Stat(absDir); os.IsNotExist(err) {
+			return fmt.Errorf("include: directory of %s not exist", f)
+		}
+	}
 	return nil
 }
 
@@ -236,6 +269,7 @@ func UnmarshalClientConfFromIni(source interface{}) (ClientCommonConf, error) {
 	}
 
 	common.Metas = GetMapWithoutPrefix(s.KeysHash(), "meta_")
+	common.ClientConfig.OidcAdditionalEndpointParams = GetMapWithoutPrefix(s.KeysHash(), "oidc_additional_")
 
 	return common, nil
 }
@@ -247,7 +281,6 @@ func LoadAllProxyConfsFromIni(
 	source interface{},
 	start []string,
 ) (map[string]ProxyConf, map[string]VisitorConf, error) {
-
 	f, err := ini.LoadSources(ini.LoadOptions{
 		Insensitive:         false,
 		InsensitiveSections: false,
@@ -290,7 +323,7 @@ func LoadAllProxyConfsFromIni(
 	for _, section := range rangeSections {
 		err = renderRangeProxyTemplates(f, section)
 		if err != nil {
-			return nil, nil, fmt.Errorf("fail to render range-section[%s] with error: %v", section.Name(), err)
+			return nil, nil, fmt.Errorf("failed to render template for proxy %s: %v", section.Name(), err)
 		}
 	}
 
@@ -315,7 +348,7 @@ func LoadAllProxyConfsFromIni(
 		case "server":
 			newConf, newErr := NewProxyConfFromIni(prefix, name, section)
 			if newErr != nil {
-				return nil, nil, fmt.Errorf("fail to parse section[%s], err: %v", name, newErr)
+				return nil, nil, fmt.Errorf("failed to parse proxy %s, err: %v", name, newErr)
 			}
 			proxyConfs[prefix+name] = newConf
 		case "visitor":
@@ -325,14 +358,13 @@ func LoadAllProxyConfsFromIni(
 			}
 			visitorConfs[prefix+name] = newConf
 		default:
-			return nil, nil, fmt.Errorf("section[%s] role should be 'server' or 'visitor'", name)
+			return nil, nil, fmt.Errorf("proxy %s role should be 'server' or 'visitor'", name)
 		}
 	}
 	return proxyConfs, visitorConfs, nil
 }
 
 func renderRangeProxyTemplates(f *ini.File, section *ini.Section) error {
-
 	// Validation
 	localPortStr := section.Key("local_port").String()
 	remotePortStr := section.Key("remote_port").String()
@@ -370,8 +402,12 @@ func renderRangeProxyTemplates(f *ini.File, section *ini.Section) error {
 		}
 
 		copySection(section, tmpsection)
-		tmpsection.NewKey("local_port", fmt.Sprintf("%d", localPorts[i]))
+		if _, err := tmpsection.NewKey("local_port", fmt.Sprintf("%d", localPorts[i])); err != nil {
-		tmpsection.NewKey("remote_port", fmt.Sprintf("%d", remotePorts[i]))
+			return fmt.Errorf("local_port new key in section error: %v", err)
+		}
+		if _, err := tmpsection.NewKey("remote_port", fmt.Sprintf("%d", remotePorts[i])); err != nil {
+			return fmt.Errorf("remote_port new key in section error: %v", err)
+		}
 	}
 
 	return nil
@@ -379,6 +415,6 @@ func renderRangeProxyTemplates(f *ini.File, section *ini.Section) error {
 
 func copySection(source, target *ini.Section) {
 	for key, value := range source.KeysHash() {
-		target.NewKey(key, value)
+		_, _ = target.NewKey(key, value)
 	}
 }

pkg/config/client_test.go

@@ -17,18 +17,17 @@ package config
 import (
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+
 	"github.com/fatedier/frp/pkg/auth"
 	"github.com/fatedier/frp/pkg/consts"
-
-	"github.com/stretchr/testify/assert"
 )
 
 const (
 	testUser = "test"
 )
 
-var (
+var testClientBytesWithFull = []byte(`
-	testClientBytesWithFull = []byte(`
 		# [common] is integral section
 		[common]
 		server_addr = 0.0.0.9
@@ -237,7 +236,6 @@ var (
 		use_encryption = false
 		use_compression = false
 	`)
-)
 
 func Test_LoadClientCommonConf(t *testing.T) {
 	assert := assert.New(t)
@@ -259,43 +257,47 @@ func Test_LoadClientCommonConf(t *testing.T) {
 				OidcTokenEndpointURL: "endpoint_url",
 			},
 		},
-		ServerAddr:        "0.0.0.9",
+		ServerAddr:              "0.0.0.9",
-		ServerPort:        7009,
+		ServerPort:              7009,
-		HTTPProxy:         "http://user:passwd@192.168.1.128:8080",
+		DialServerTimeout:       10,
-		LogFile:           "./frpc.log9",
+		DialServerKeepAlive:     7200,
-		LogWay:            "file",
+		HTTPProxy:               "http://user:passwd@192.168.1.128:8080",
-		LogLevel:          "info9",
+		LogFile:                 "./frpc.log9",
-		LogMaxDays:        39,
+		LogWay:                  "file",
-		DisableLogColor:   false,
+		LogLevel:                "info9",
-		AdminAddr:         "127.0.0.9",
+		LogMaxDays:              39,
-		AdminPort:         7409,
+		DisableLogColor:         false,
-		AdminUser:         "admin9",
+		AdminAddr:               "127.0.0.9",
-		AdminPwd:          "admin9",
+		AdminPort:               7409,
-		AssetsDir:         "./static9",
+		AdminUser:               "admin9",
-		PoolCount:         59,
+		AdminPwd:                "admin9",
-		TCPMux:            true,
+		AssetsDir:               "./static9",
-		User:              "your_name",
+		PoolCount:               59,
-		LoginFailExit:     true,
+		TCPMux:                  true,
-		Protocol:          "tcp",
+		TCPMuxKeepaliveInterval: 60,
-		TLSEnable:         true,
+		User:                    "your_name",
-		TLSCertFile:       "client.crt",
+		LoginFailExit:           true,
-		TLSKeyFile:        "client.key",
+		Protocol:                "tcp",
-		TLSTrustedCaFile:  "ca.crt",
+		TLSEnable:               true,
-		TLSServerName:     "example.com",
+		TLSCertFile:             "client.crt",
-		DNSServer:         "8.8.8.9",
+		TLSKeyFile:              "client.key",
-		Start:             []string{"ssh", "dns"},
+		TLSTrustedCaFile:        "ca.crt",
-		HeartbeatInterval: 39,
+		TLSServerName:           "example.com",
-		HeartbeatTimeout:  99,
+		DNSServer:               "8.8.8.9",
+		Start:                   []string{"ssh", "dns"},
+		HeartbeatInterval:       39,
+		HeartbeatTimeout:        99,
 		Metas: map[string]string{
 			"var1": "123",
 			"var2": "234",
 		},
-		UDPPacketSize: 1509,
+		UDPPacketSize:      1509,
+		IncludeConfigFiles: []string{},
 	}
 
 	common, err := UnmarshalClientConfFromIni(testClientBytesWithFull)
 	assert.NoError(err)
-	assert.Equal(expected, common)
+	assert.EqualValues(expected, common)
 }
 
 func Test_LoadClientBasicConf(t *testing.T) {
@@ -641,5 +643,4 @@ func Test_LoadClientBasicConf(t *testing.T) {
 	assert.NoError(err)
 	assert.Equal(proxyExpected, proxyActual)
 	assert.Equal(visitorExpected, visitorActual)
-
 }

pkg/config/parse.go

@@ -0,0 +1,99 @@
+// Copyright 2021 The frp Authors
+//
+// 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 (
+	"bytes"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func ParseClientConfig(filePath string) (
+	cfg ClientCommonConf,
+	pxyCfgs map[string]ProxyConf,
+	visitorCfgs map[string]VisitorConf,
+	err error,
+) {
+	var content []byte
+	content, err = GetRenderedConfFromFile(filePath)
+	if err != nil {
+		return
+	}
+	configBuffer := bytes.NewBuffer(nil)
+	configBuffer.Write(content)
+
+	// Parse common section.
+	cfg, err = UnmarshalClientConfFromIni(content)
+	if err != nil {
+		return
+	}
+	cfg.Complete()
+	if err = cfg.Validate(); err != nil {
+		err = fmt.Errorf("parse config error: %v", err)
+		return
+	}
+
+	// Aggregate proxy configs from include files.
+	var buf []byte
+	buf, err = getIncludeContents(cfg.IncludeConfigFiles)
+	if err != nil {
+		err = fmt.Errorf("getIncludeContents error: %v", err)
+		return
+	}
+	configBuffer.WriteString("\n")
+	configBuffer.Write(buf)
+
+	// Parse all proxy and visitor configs.
+	pxyCfgs, visitorCfgs, err = LoadAllProxyConfsFromIni(cfg.User, configBuffer.Bytes(), cfg.Start)
+	if err != nil {
+		return
+	}
+	return
+}
+
+// getIncludeContents renders all configs from paths.
+// files format can be a single file path or directory or regex path.
+func getIncludeContents(paths []string) ([]byte, error) {
+	out := bytes.NewBuffer(nil)
+	for _, path := range paths {
+		absDir, err := filepath.Abs(filepath.Dir(path))
+		if err != nil {
+			return nil, err
+		}
+		if _, err := os.Stat(absDir); os.IsNotExist(err) {
+			return nil, err
+		}
+		files, err := os.ReadDir(absDir)
+		if err != nil {
+			return nil, err
+		}
+		for _, fi := range files {
+			if fi.IsDir() {
+				continue
+			}
+			absFile := filepath.Join(absDir, fi.Name())
+			if matched, _ := filepath.Match(filepath.Join(absDir, filepath.Base(path)), absFile); matched {
+				tmpContent, err := GetRenderedConfFromFile(absFile)
+				if err != nil {
+					return nil, fmt.Errorf("render extra config %s error: %v", absFile, err)
+				}
+				out.Write(tmpContent)
+				out.WriteString("\n")
+			}
+		}
+	}
+	return out.Bytes(), nil
+}

pkg/config/proxy.go

@@ -16,13 +16,15 @@ package config
 
 import (
 	"fmt"
+	"net"
 	"reflect"
+	"strconv"
 	"strings"
 
+	"gopkg.in/ini.v1"
+
 	"github.com/fatedier/frp/pkg/consts"
 	"github.com/fatedier/frp/pkg/msg"
-
-	"gopkg.in/ini.v1"
 )
 
 // Proxy
@@ -143,7 +145,6 @@ type BaseProxyConf struct {
 	// meta info for each proxy
 	Metas map[string]string `ini:"-" json:"metas"`
 
-	// TODO: LocalSvrConf => LocalAppConf
 	LocalSvrConf    `ini:",extends"`
 	HealthCheckConf `ini:",extends"`
 }
@@ -163,6 +164,7 @@ type HTTPProxyConf struct {
 	HTTPPwd           string            `ini:"http_pwd" json:"http_pwd"`
 	HostHeaderRewrite string            `ini:"host_header_rewrite" json:"host_header_rewrite"`
 	Headers           map[string]string `ini:"-" json:"headers"`
+	RouteByHTTPUser   string            `ini:"route_by_http_user" json:"route_by_http_user"`
 }
 
 // HTTPS
@@ -179,8 +181,9 @@ type TCPProxyConf struct {
 
 // TCPMux
 type TCPMuxProxyConf struct {
-	BaseProxyConf `ini:",extends"`
+	BaseProxyConf   `ini:",extends"`
-	DomainConf    `ini:",extends"`
+	DomainConf      `ini:",extends"`
+	RouteByHTTPUser string `ini:"route_by_http_user" json:"route_by_http_user"`
 
 	Multiplexer string `ini:"multiplexer"`
 }
@@ -274,7 +277,7 @@ func NewProxyConfFromIni(prefix, name string, section *ini.Section) (ProxyConf,
 
 	conf := DefaultProxyConf(proxyType)
 	if conf == nil {
-		return nil, fmt.Errorf("proxy [%s] type [%s] error", name, proxyType)
+		return nil, fmt.Errorf("proxy %s has invalid type [%s]", name, proxyType)
 	}
 
 	if err := conf.UnmarshalFromIni(prefix, name, section); err != nil {
@@ -371,7 +374,7 @@ func (cfg *BaseProxyConf) decorate(prefix string, name string, section *ini.Sect
 	}
 
 	if cfg.HealthCheckType == "http" && cfg.Plugin == "" && cfg.HealthCheckURL != "" {
-		s := fmt.Sprintf("http://%s:%d", cfg.LocalIP, cfg.LocalPort)
+		s := "http://" + net.JoinHostPort(cfg.LocalIP, strconv.Itoa(cfg.LocalPort))
 		if !strings.HasPrefix(cfg.HealthCheckURL, "/") {
 			s += "/"
 		}
@@ -417,10 +420,6 @@ func (cfg *BaseProxyConf) checkForCli() (err error) {
 	return nil
 }
 
-func (cfg *BaseProxyConf) checkForSvr(conf ServerCommonConf) error {
-	return nil
-}
-
 // DomainConf
 func (cfg *DomainConf) check() (err error) {
 	if len(cfg.CustomDomains) == 0 && cfg.SubDomain == "" {
@@ -577,7 +576,7 @@ func (cfg *TCPMuxProxyConf) Compare(cmp ProxyConf) bool {
 		return false
 	}
 
-	if cfg.Multiplexer != cmpConf.Multiplexer {
+	if cfg.Multiplexer != cmpConf.Multiplexer || cfg.RouteByHTTPUser != cmpConf.RouteByHTTPUser {
 		return false
 	}
 
@@ -602,6 +601,7 @@ func (cfg *TCPMuxProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
 	cfg.CustomDomains = pMsg.CustomDomains
 	cfg.SubDomain = pMsg.SubDomain
 	cfg.Multiplexer = pMsg.Multiplexer
+	cfg.RouteByHTTPUser = pMsg.RouteByHTTPUser
 }
 
 func (cfg *TCPMuxProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
@@ -611,6 +611,7 @@ func (cfg *TCPMuxProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
 	pMsg.CustomDomains = cfg.CustomDomains
 	pMsg.SubDomain = cfg.SubDomain
 	pMsg.Multiplexer = cfg.Multiplexer
+	pMsg.RouteByHTTPUser = cfg.RouteByHTTPUser
 }
 
 func (cfg *TCPMuxProxyConf) CheckForCli() (err error) {
@@ -725,6 +726,7 @@ func (cfg *HTTPProxyConf) Compare(cmp ProxyConf) bool {
 		cfg.HTTPUser != cmpConf.HTTPUser ||
 		cfg.HTTPPwd != cmpConf.HTTPPwd ||
 		cfg.HostHeaderRewrite != cmpConf.HostHeaderRewrite ||
+		cfg.RouteByHTTPUser != cmpConf.RouteByHTTPUser ||
 		!reflect.DeepEqual(cfg.Headers, cmpConf.Headers) {
 		return false
 	}
@@ -755,6 +757,7 @@ func (cfg *HTTPProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
 	cfg.HTTPUser = pMsg.HTTPUser
 	cfg.HTTPPwd = pMsg.HTTPPwd
 	cfg.Headers = pMsg.Headers
+	cfg.RouteByHTTPUser = pMsg.RouteByHTTPUser
 }
 
 func (cfg *HTTPProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
@@ -768,6 +771,7 @@ func (cfg *HTTPProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
 	pMsg.HTTPUser = cfg.HTTPUser
 	pMsg.HTTPPwd = cfg.HTTPPwd
 	pMsg.Headers = cfg.Headers
+	pMsg.RouteByHTTPUser = cfg.RouteByHTTPUser
 }
 
 func (cfg *HTTPProxyConf) CheckForCli() (err error) {

pkg/config/proxy_test.go

@@ -17,10 +17,10 @@ package config
 import (
 	"testing"
 
-	"github.com/fatedier/frp/pkg/consts"
 	"github.com/stretchr/testify/assert"
-
 	"gopkg.in/ini.v1"
+
+	"github.com/fatedier/frp/pkg/consts"
 )
 
 var (
@@ -49,7 +49,6 @@ func Test_Proxy_UnmarshalFromIni(t *testing.T) {
 		source   []byte
 		expected ProxyConf
 	}{
-
 		{
 			sname: "ssh",
 			source: []byte(`
@@ -457,5 +456,4 @@ func Test_RangeProxy_UnmarshalFromIni(t *testing.T) {
 
 		assert.Equal(c.expected, actual)
 	}
-
 }

pkg/config/server.go

@@ -18,11 +18,12 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/go-playground/validator/v10"
+	"gopkg.in/ini.v1"
+
 	"github.com/fatedier/frp/pkg/auth"
 	plugin "github.com/fatedier/frp/pkg/plugin/server"
 	"github.com/fatedier/frp/pkg/util/util"
-
-	"gopkg.in/ini.v1"
 )
 
 // ServerCommonConf contains information for a server service. It is
@@ -36,31 +37,33 @@ type ServerCommonConf struct {
 	BindAddr string `ini:"bind_addr" json:"bind_addr"`
 	// BindPort specifies the port that the server listens on. By default, this
 	// value is 7000.
-	BindPort int `ini:"bind_port" json:"bind_port"`
+	BindPort int `ini:"bind_port" json:"bind_port" validate:"gte=0,lte=65535"`
 	// BindUDPPort specifies the UDP port that the server listens on. If this
 	// value is 0, the server will not listen for UDP connections. By default,
 	// this value is 0
-	BindUDPPort int `ini:"bind_udp_port" json:"bind_udp_port"`
+	BindUDPPort int `ini:"bind_udp_port" json:"bind_udp_port" validate:"gte=0,lte=65535"`
 	// KCPBindPort specifies the KCP port that the server listens on. If this
 	// value is 0, the server will not listen for KCP connections. By default,
 	// this value is 0.
-	KCPBindPort int `ini:"kcp_bind_port" json:"kcp_bind_port"`
+	KCPBindPort int `ini:"kcp_bind_port" json:"kcp_bind_port" validate:"gte=0,lte=65535"`
 	// ProxyBindAddr specifies the address that the proxy binds to. This value
 	// may be the same as BindAddr.
 	ProxyBindAddr string `ini:"proxy_bind_addr" json:"proxy_bind_addr"`
 	// VhostHTTPPort specifies the port that the server listens for HTTP Vhost
 	// requests. If this value is 0, the server will not listen for HTTP
 	// requests. By default, this value is 0.
-	VhostHTTPPort int `ini:"vhost_http_port" json:"vhost_http_port"`
+	VhostHTTPPort int `ini:"vhost_http_port" json:"vhost_http_port" validate:"gte=0,lte=65535"`
 	// VhostHTTPSPort specifies the port that the server listens for HTTPS
 	// Vhost requests. If this value is 0, the server will not listen for HTTPS
 	// requests. By default, this value is 0.
-	VhostHTTPSPort int `ini:"vhost_https_port" json:"vhost_https_port"`
+	VhostHTTPSPort int `ini:"vhost_https_port" json:"vhost_https_port" validate:"gte=0,lte=65535"`
 	// TCPMuxHTTPConnectPort specifies the port that the server listens for TCP
 	// HTTP CONNECT requests. If the value is 0, the server will not multiplex TCP
 	// requests on one single port. If it's not - it will listen on this value for
 	// HTTP CONNECT requests. By default, this value is 0.
-	TCPMuxHTTPConnectPort int `ini:"tcpmux_httpconnect_port" json:"tcpmux_httpconnect_port"`
+	TCPMuxHTTPConnectPort int `ini:"tcpmux_httpconnect_port" json:"tcpmux_httpconnect_port" validate:"gte=0,lte=65535"`
+	// If TCPMuxPassthrough is true, frps won't do any update on traffic.
+	TCPMuxPassthrough bool `ini:"tcpmux_passthrough" json:"tcpmux_passthrough"`
 	// VhostHTTPTimeout specifies the response header timeout for the Vhost
 	// HTTP server, in seconds. By default, this value is 60.
 	VhostHTTPTimeout int64 `ini:"vhost_http_timeout" json:"vhost_http_timeout"`
@@ -70,12 +73,23 @@ type ServerCommonConf struct {
 	// DashboardPort specifies the port that the dashboard listens on. If this
 	// value is 0, the dashboard will not be started. By default, this value is
 	// 0.
-	DashboardPort int `ini:"dashboard_port" json:"dashboard_port"`
+	DashboardPort int `ini:"dashboard_port" json:"dashboard_port" validate:"gte=0,lte=65535"`
+	// DashboardTLSCertFile specifies the path of the cert file that the server will
+	// load. If "dashboard_tls_cert_file", "dashboard_tls_key_file" are valid, the server will use this
+	// supplied tls configuration.
+	DashboardTLSCertFile string `ini:"dashboard_tls_cert_file" json:"dashboard_tls_cert_file"`
+	// DashboardTLSKeyFile specifies the path of the secret key that the server will
+	// load. If "dashboard_tls_cert_file", "dashboard_tls_key_file" are valid, the server will use this
+	// supplied tls configuration.
+	DashboardTLSKeyFile string `ini:"dashboard_tls_key_file" json:"dashboard_tls_key_file"`
+	// DashboardTLSMode specifies the mode of the dashboard between HTTP or HTTPS modes. By
+	// default, this value is false, which is HTTP mode.
+	DashboardTLSMode bool `ini:"dashboard_tls_mode" json:"dashboard_tls_mode"`
 	// DashboardUser specifies the username that the dashboard will use for
-	// login. By default, this value is "admin".
+	// login.
 	DashboardUser string `ini:"dashboard_user" json:"dashboard_user"`
-	// DashboardUser specifies the password that the dashboard will use for
+	// DashboardPwd specifies the password that the dashboard will use for
-	// login. By default, this value is "admin".
+	// login.
 	DashboardPwd string `ini:"dashboard_pwd" json:"dashboard_pwd"`
 	// EnablePrometheus will export prometheus metrics on {dashboard_addr}:{dashboard_port}
 	// in /metrics api.
@@ -117,6 +131,12 @@ type ServerCommonConf struct {
 	// from a client to share a single TCP connection. By default, this value
 	// is true.
 	TCPMux bool `ini:"tcp_mux" json:"tcp_mux"`
+	// TCPMuxKeepaliveInterval specifies the keep alive interval for TCP stream multipler.
+	// If TCPMux is true, heartbeat of application layer is unnecessary because it can only rely on heartbeat in TCPMux.
+	TCPMuxKeepaliveInterval int64 `ini:"tcp_mux_keepalive_interval" json:"tcp_mux_keepalive_interval"`
+	// TCPKeepAlive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+	// If negative, keep-alive probes are disabled.
+	TCPKeepAlive int64 `ini:"tcp_keepalive" json:"tcp_keepalive"`
 	// Custom404Page specifies a path to a custom 404 page to display. If this
 	// value is "", a default page will be displayed. By default, this value is
 	// "".
@@ -153,7 +173,7 @@ type ServerCommonConf struct {
 	TLSTrustedCaFile string `ini:"tls_trusted_ca_file" json:"tls_trusted_ca_file"`
 	// HeartBeatTimeout specifies the maximum time to wait for a heartbeat
 	// before terminating the connection. It is not recommended to change this
-	// value. By default, this value is 90.
+	// value. By default, this value is 90. Set negative value to disable it.
 	HeartbeatTimeout int64 `ini:"heartbeat_timeout" json:"heartbeat_timeout"`
 	// UserConnTimeout specifies the maximum time to wait for a work
 	// connection. By default, this value is 10.
@@ -163,53 +183,59 @@ type ServerCommonConf struct {
 	// UDPPacketSize specifies the UDP packet size
 	// By default, this value is 1500
 	UDPPacketSize int64 `ini:"udp_packet_size" json:"udp_packet_size"`
+	// Enable golang pprof handlers in dashboard listener.
+	// Dashboard port must be set first.
+	PprofEnable bool `ini:"pprof_enable" json:"pprof_enable"`
 }
 
 // GetDefaultServerConf returns a server configuration with reasonable
 // defaults.
 func GetDefaultServerConf() ServerCommonConf {
 	return ServerCommonConf{
-		ServerConfig:           auth.GetDefaultServerConf(),
+		ServerConfig:            auth.GetDefaultServerConf(),
-		BindAddr:               "0.0.0.0",
+		BindAddr:                "0.0.0.0",
-		BindPort:               7000,
+		BindPort:                7000,
-		BindUDPPort:            0,
+		BindUDPPort:             0,
-		KCPBindPort:            0,
+		KCPBindPort:             0,
-		ProxyBindAddr:          "",
+		ProxyBindAddr:           "",
-		VhostHTTPPort:          0,
+		VhostHTTPPort:           0,
-		VhostHTTPSPort:         0,
+		VhostHTTPSPort:          0,
-		TCPMuxHTTPConnectPort:  0,
+		TCPMuxHTTPConnectPort:   0,
-		VhostHTTPTimeout:       60,
+		TCPMuxPassthrough:       false,
-		DashboardAddr:          "0.0.0.0",
+		VhostHTTPTimeout:        60,
-		DashboardPort:          0,
+		DashboardAddr:           "0.0.0.0",
-		DashboardUser:          "admin",
+		DashboardPort:           0,
-		DashboardPwd:           "admin",
+		DashboardUser:           "",
-		EnablePrometheus:       false,
+		DashboardPwd:            "",
-		AssetsDir:              "",
+		EnablePrometheus:        false,
-		LogFile:                "console",
+		AssetsDir:               "",
-		LogWay:                 "console",
+		LogFile:                 "console",
-		LogLevel:               "info",
+		LogWay:                  "console",
-		LogMaxDays:             3,
+		LogLevel:                "info",
-		DisableLogColor:        false,
+		LogMaxDays:              3,
-		DetailedErrorsToClient: true,
+		DisableLogColor:         false,
-		SubDomainHost:          "",
+		DetailedErrorsToClient:  true,
-		TCPMux:                 true,
+		SubDomainHost:           "",
-		AllowPorts:             make(map[int]struct{}),
+		TCPMux:                  true,
-		MaxPoolCount:           5,
+		TCPMuxKeepaliveInterval: 60,
-		MaxPortsPerClient:      0,
+		TCPKeepAlive:            7200,
-		TLSOnly:                false,
+		AllowPorts:              make(map[int]struct{}),
-		TLSCertFile:            "",
+		MaxPoolCount:            5,
-		TLSKeyFile:             "",
+		MaxPortsPerClient:       0,
-		TLSTrustedCaFile:       "",
+		TLSOnly:                 false,
-		HeartbeatTimeout:       90,
+		TLSCertFile:             "",
-		UserConnTimeout:        10,
+		TLSKeyFile:              "",
-		Custom404Page:          "",
+		TLSTrustedCaFile:        "",
-		HTTPPlugins:            make(map[string]plugin.HTTPPluginOptions),
+		HeartbeatTimeout:        90,
-		UDPPacketSize:          1500,
+		UserConnTimeout:         10,
+		Custom404Page:           "",
+		HTTPPlugins:             make(map[string]plugin.HTTPPluginOptions),
+		UDPPacketSize:           1500,
+		PprofEnable:             false,
 	}
 }
 
 func UnmarshalServerConfFromIni(source interface{}) (ServerCommonConf, error) {
-
 	f, err := ini.LoadSources(ini.LoadOptions{
 		Insensitive:         false,
 		InsensitiveSections: false,
@@ -223,7 +249,6 @@ func UnmarshalServerConfFromIni(source interface{}) (ServerCommonConf, error) {
 
 	s, err := f.GetSection("common")
 	if err != nil {
-		// TODO: add error info
 		return ServerCommonConf{}, err
 	}
 
@@ -282,7 +307,24 @@ func (cfg *ServerCommonConf) Complete() {
 }
 
 func (cfg *ServerCommonConf) Validate() error {
-	return nil
+	if !cfg.DashboardTLSMode {
+		if cfg.DashboardTLSCertFile != "" {
+			fmt.Println("WARNING! dashboard_tls_cert_file is invalid when dashboard_tls_mode is false")
+		}
+
+		if cfg.DashboardTLSKeyFile != "" {
+			fmt.Println("WARNING! dashboard_tls_key_file is invalid when dashboard_tls_mode is false")
+		}
+	} else {
+		if cfg.DashboardTLSCertFile == "" {
+			return fmt.Errorf("ERROR! dashboard_tls_cert_file must be specified when dashboard_tls_mode is true")
+		}
+
+		if cfg.DashboardTLSKeyFile == "" {
+			return fmt.Errorf("ERROR! dashboard_tls_cert_file must be specified when dashboard_tls_mode is true")
+		}
+	}
+	return validator.New().Struct(cfg)
 }
 
 func loadHTTPPluginOpt(section *ini.Section) (*plugin.HTTPPluginOptions, error) {

pkg/config/server_test.go

@@ -17,10 +17,10 @@ package config
 import (
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+
 	"github.com/fatedier/frp/pkg/auth"
 	plugin "github.com/fatedier/frp/pkg/plugin/server"
-
-	"github.com/stretchr/testify/assert"
 )
 
 func Test_LoadServerCommonConf(t *testing.T) {
@@ -126,20 +126,22 @@ func Test_LoadServerCommonConf(t *testing.T) {
 				HeartbeatTimeout:       99,
 				UserConnTimeout:        9,
 				AllowPorts: map[int]struct{}{
-					10: struct{}{},
+					10: {},
-					11: struct{}{},
+					11: {},
-					12: struct{}{},
+					12: {},
-					99: struct{}{},
+					99: {},
 				},
-				MaxPoolCount:      59,
+				MaxPoolCount:            59,
-				MaxPortsPerClient: 9,
+				MaxPortsPerClient:       9,
-				TLSOnly:           true,
+				TLSOnly:                 true,
-				TLSCertFile:       "server.crt",
+				TLSCertFile:             "server.crt",
-				TLSKeyFile:        "server.key",
+				TLSKeyFile:              "server.key",
-				TLSTrustedCaFile:  "ca.crt",
+				TLSTrustedCaFile:        "ca.crt",
-				SubDomainHost:     "frps.com",
+				SubDomainHost:           "frps.com",
-				TCPMux:            true,
+				TCPMux:                  true,
-				UDPPacketSize:     1509,
+				TCPMuxKeepaliveInterval: 60,
+				TCPKeepAlive:            7200,
+				UDPPacketSize:           1509,
 
 				HTTPPlugins: map[string]plugin.HTTPPluginOptions{
 					"user-manager": {
@@ -174,27 +176,29 @@ func Test_LoadServerCommonConf(t *testing.T) {
 						AuthenticateNewWorkConns: false,
 					},
 				},
-				BindAddr:               "0.0.0.9",
+				BindAddr:                "0.0.0.9",
-				BindPort:               7009,
+				BindPort:                7009,
-				BindUDPPort:            7008,
+				BindUDPPort:             7008,
-				ProxyBindAddr:          "0.0.0.9",
+				ProxyBindAddr:           "0.0.0.9",
-				VhostHTTPTimeout:       60,
+				VhostHTTPTimeout:        60,
-				DashboardAddr:          "0.0.0.0",
+				DashboardAddr:           "0.0.0.0",
-				DashboardUser:          "admin",
+				DashboardUser:           "",
-				DashboardPwd:           "admin",
+				DashboardPwd:            "",
-				EnablePrometheus:       false,
+				EnablePrometheus:        false,
-				LogFile:                "console",
+				LogFile:                 "console",
-				LogWay:                 "console",
+				LogWay:                  "console",
-				LogLevel:               "info",
+				LogLevel:                "info",
-				LogMaxDays:             3,
+				LogMaxDays:              3,
-				DetailedErrorsToClient: true,
+				DetailedErrorsToClient:  true,
-				TCPMux:                 true,
+				TCPMux:                  true,
-				AllowPorts:             make(map[int]struct{}),
+				TCPMuxKeepaliveInterval: 60,
-				MaxPoolCount:           5,
+				TCPKeepAlive:            7200,
-				HeartbeatTimeout:       90,
+				AllowPorts:              make(map[int]struct{}),
-				UserConnTimeout:        10,
+				MaxPoolCount:            5,
-				HTTPPlugins:            make(map[string]plugin.HTTPPluginOptions),
+				HeartbeatTimeout:        90,
-				UDPPacketSize:          1500,
+				UserConnTimeout:         10,
+				HTTPPlugins:             make(map[string]plugin.HTTPPluginOptions),
+				UDPPacketSize:           1500,
 			},
 		},
 	}

pkg/config/types.go

@@ -75,21 +75,22 @@ func (q *BandwidthQuantity) UnmarshalString(s string) error {
 		f    float64
 		err  error
 	)
-	if strings.HasSuffix(s, "MB") {
+	switch {
+	case strings.HasSuffix(s, "MB"):
 		base = MB
 		fstr := strings.TrimSuffix(s, "MB")
 		f, err = strconv.ParseFloat(fstr, 64)
 		if err != nil {
 			return err
 		}
-	} else if strings.HasSuffix(s, "KB") {
+	case strings.HasSuffix(s, "KB"):
 		base = KB
 		fstr := strings.TrimSuffix(s, "KB")
 		f, err = strconv.ParseFloat(fstr, 64)
 		if err != nil {
 			return err
 		}
-	} else {
+	default:
 		return errors.New("unit not support")
 	}
 

pkg/config/value.go

@@ -16,25 +16,22 @@ package config
 
 import (
 	"bytes"
-	"io/ioutil"
 	"os"
 	"strings"
 	"text/template"
 )
 
-var (
+var glbEnvs map[string]string
-	glbEnvs map[string]string
-)
 
 func init() {
 	glbEnvs = make(map[string]string)
 	envs := os.Environ()
 	for _, env := range envs {
-		kv := strings.Split(env, "=")
+		pair := strings.SplitN(env, "=", 2)
-		if len(kv) != 2 {
+		if len(pair) != 2 {
 			continue
 		}
-		glbEnvs[kv[0]] = kv[1]
+		glbEnvs[pair[0]] = pair[1]
 	}
 }
 
@@ -67,7 +64,7 @@ func RenderContent(in []byte) (out []byte, err error) {
 
 func GetRenderedConfFromFile(path string) (out []byte, err error) {
 	var b []byte
-	b, err = ioutil.ReadFile(path)
+	b, err = os.ReadFile(path)
 	if err != nil {
 		return
 	}

pkg/config/visitor.go

@@ -18,9 +18,9 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/fatedier/frp/pkg/consts"
-
 	"gopkg.in/ini.v1"
+
+	"github.com/fatedier/frp/pkg/consts"
 )
 
 // Visitor
@@ -136,6 +136,7 @@ func (cfg *BaseVisitorConf) check() (err error) {
 }
 
 func (cfg *BaseVisitorConf) unmarshalFromIni(prefix string, name string, section *ini.Section) error {
+	_ = section
 
 	// Custom decoration after basic unmarshal:
 	// proxy name

pkg/config/visitor_test.go

@@ -17,10 +17,10 @@ package config
 import (
 	"testing"
 
-	"github.com/fatedier/frp/pkg/consts"
-
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/ini.v1"
+
+	"github.com/fatedier/frp/pkg/consts"
 )
 
 const testVisitorPrefix = "test."

pkg/consts/consts.go

@@ -16,26 +16,26 @@ package consts
 
 var (
 	// proxy status
-	Idle    string = "idle"
+	Idle    = "idle"
-	Working string = "working"
+	Working = "working"
-	Closed  string = "closed"
+	Closed  = "closed"
-	Online  string = "online"
+	Online  = "online"
-	Offline string = "offline"
+	Offline = "offline"
 
 	// proxy type
-	TCPProxy    string = "tcp"
+	TCPProxy    = "tcp"
-	UDPProxy    string = "udp"
+	UDPProxy    = "udp"
-	TCPMuxProxy string = "tcpmux"
+	TCPMuxProxy = "tcpmux"
-	HTTPProxy   string = "http"
+	HTTPProxy   = "http"
-	HTTPSProxy  string = "https"
+	HTTPSProxy  = "https"
-	STCPProxy   string = "stcp"
+	STCPProxy   = "stcp"
-	XTCPProxy   string = "xtcp"
+	XTCPProxy   = "xtcp"
-	SUDPProxy   string = "sudp"
+	SUDPProxy   = "sudp"
 
 	// authentication method
-	TokenAuthMethod string = "token"
+	TokenAuthMethod = "token"
-	OidcAuthMethod  string = "oidc"
+	OidcAuthMethod  = "oidc"
 
 	// TCP multiplexer
-	HTTPConnectTCPMultiplexer string = "httpconnect"
+	HTTPConnectTCPMultiplexer = "httpconnect"
 )

pkg/metrics/aggregate/server.go

@@ -30,7 +30,7 @@ func EnablePrometheus() {
 	sm.Add(prometheus.ServerMetrics)
 }
 
-var sm *serverMetrics = &serverMetrics{}
+var sm = &serverMetrics{}
 
 func init() {
 	metrics.Register(sm)

pkg/metrics/mem/server.go

@@ -23,9 +23,12 @@ import (
 	server "github.com/fatedier/frp/server/metrics"
 )
 
-var sm *serverMetrics = newServerMetrics()
+var (
-var ServerMetrics server.ServerMetrics
+	sm = newServerMetrics()
-var StatsCollector Collector
+
+	ServerMetrics  server.ServerMetrics
+	StatsCollector Collector
+)
 
 func init() {
 	ServerMetrics = sm

pkg/metrics/metrics.go

@@ -4,5 +4,7 @@ import (
 	"github.com/fatedier/frp/pkg/metrics/aggregate"
 )
 
-var EnableMem = aggregate.EnableMem
+var (
-var EnablePrometheus = aggregate.EnablePrometheus
+	EnableMem        = aggregate.EnableMem
+	EnablePrometheus = aggregate.EnablePrometheus
+)

pkg/metrics/prometheus/server.go

@@ -1,9 +1,9 @@
 package prometheus
 
 import (
-	"github.com/fatedier/frp/server/metrics"
-
 	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/fatedier/frp/server/metrics"
 )
 
 const (

pkg/msg/ctl.go

@@ -22,9 +22,7 @@ import (
 
 type Message = jsonMsg.Message
 
-var (
+var msgCtl *jsonMsg.MsgCtl
-	msgCtl *jsonMsg.MsgCtl
-)
 
 func init() {
 	msgCtl = jsonMsg.NewMsgCtl()

pkg/msg/msg.go

@@ -37,158 +37,155 @@ const (
 	TypeNatHoleSid            = '5'
 )
 
-var (
+var msgTypeMap = map[byte]interface{}{
-	msgTypeMap = map[byte]interface{}{
+	TypeLogin:                 Login{},
-		TypeLogin:                 Login{},
+	TypeLoginResp:             LoginResp{},
-		TypeLoginResp:             LoginResp{},
+	TypeNewProxy:              NewProxy{},
-		TypeNewProxy:              NewProxy{},
+	TypeNewProxyResp:          NewProxyResp{},
-		TypeNewProxyResp:          NewProxyResp{},
+	TypeCloseProxy:            CloseProxy{},
-		TypeCloseProxy:            CloseProxy{},
+	TypeNewWorkConn:           NewWorkConn{},
-		TypeNewWorkConn:           NewWorkConn{},
+	TypeReqWorkConn:           ReqWorkConn{},
-		TypeReqWorkConn:           ReqWorkConn{},
+	TypeStartWorkConn:         StartWorkConn{},
-		TypeStartWorkConn:         StartWorkConn{},
+	TypeNewVisitorConn:        NewVisitorConn{},
-		TypeNewVisitorConn:        NewVisitorConn{},
+	TypeNewVisitorConnResp:    NewVisitorConnResp{},
-		TypeNewVisitorConnResp:    NewVisitorConnResp{},
+	TypePing:                  Ping{},
-		TypePing:                  Ping{},
+	TypePong:                  Pong{},
-		TypePong:                  Pong{},
+	TypeUDPPacket:             UDPPacket{},
-		TypeUDPPacket:             UDPPacket{},
+	TypeNatHoleVisitor:        NatHoleVisitor{},
-		TypeNatHoleVisitor:        NatHoleVisitor{},
+	TypeNatHoleClient:         NatHoleClient{},
-		TypeNatHoleClient:         NatHoleClient{},
+	TypeNatHoleResp:           NatHoleResp{},
-		TypeNatHoleResp:           NatHoleResp{},
+	TypeNatHoleClientDetectOK: NatHoleClientDetectOK{},
-		TypeNatHoleClientDetectOK: NatHoleClientDetectOK{},
+	TypeNatHoleSid:            NatHoleSid{},
-		TypeNatHoleSid:            NatHoleSid{},
+}
-	}
-)
 
 // When frpc start, client send this message to login to server.
 type Login struct {
-	Version      string            `json:"version"`
+	Version      string            `json:"version,omitempty"`
-	Hostname     string            `json:"hostname"`
+	Hostname     string            `json:"hostname,omitempty"`
-	Os           string            `json:"os"`
+	Os           string            `json:"os,omitempty"`
-	Arch         string            `json:"arch"`
+	Arch         string            `json:"arch,omitempty"`
-	User         string            `json:"user"`
+	User         string            `json:"user,omitempty"`
-	PrivilegeKey string            `json:"privilege_key"`
+	PrivilegeKey string            `json:"privilege_key,omitempty"`
-	Timestamp    int64             `json:"timestamp"`
+	Timestamp    int64             `json:"timestamp,omitempty"`
-	RunID        string            `json:"run_id"`
+	RunID        string            `json:"run_id,omitempty"`
-	Metas        map[string]string `json:"metas"`
+	Metas        map[string]string `json:"metas,omitempty"`
 
 	// Some global configures.
-	PoolCount int `json:"pool_count"`
+	PoolCount int `json:"pool_count,omitempty"`
 }
 
 type LoginResp struct {
-	Version       string `json:"version"`
+	Version       string `json:"version,omitempty"`
-	RunID         string `json:"run_id"`
+	RunID         string `json:"run_id,omitempty"`
-	ServerUDPPort int    `json:"server_udp_port"`
+	ServerUDPPort int    `json:"server_udp_port,omitempty"`
-	Error         string `json:"error"`
+	Error         string `json:"error,omitempty"`
 }
 
 // When frpc login success, send this message to frps for running a new proxy.
 type NewProxy struct {
-	ProxyName      string            `json:"proxy_name"`
+	ProxyName      string            `json:"proxy_name,omitempty"`
-	ProxyType      string            `json:"proxy_type"`
+	ProxyType      string            `json:"proxy_type,omitempty"`
-	UseEncryption  bool              `json:"use_encryption"`
+	UseEncryption  bool              `json:"use_encryption,omitempty"`
-	UseCompression bool              `json:"use_compression"`
+	UseCompression bool              `json:"use_compression,omitempty"`
-	Group          string            `json:"group"`
+	Group          string            `json:"group,omitempty"`
-	GroupKey       string            `json:"group_key"`
+	GroupKey       string            `json:"group_key,omitempty"`
-	Metas          map[string]string `json:"metas"`
+	Metas          map[string]string `json:"metas,omitempty"`
 
 	// tcp and udp only
-	RemotePort int `json:"remote_port"`
+	RemotePort int `json:"remote_port,omitempty"`
 
 	// http and https only
-	CustomDomains     []string          `json:"custom_domains"`
+	CustomDomains     []string          `json:"custom_domains,omitempty"`
-	SubDomain         string            `json:"subdomain"`
+	SubDomain         string            `json:"subdomain,omitempty"`
-	Locations         []string          `json:"locations"`
+	Locations         []string          `json:"locations,omitempty"`
-	HTTPUser          string            `json:"http_user"`
+	HTTPUser          string            `json:"http_user,omitempty"`
-	HTTPPwd           string            `json:"http_pwd"`
+	HTTPPwd           string            `json:"http_pwd,omitempty"`
-	HostHeaderRewrite string            `json:"host_header_rewrite"`
+	HostHeaderRewrite string            `json:"host_header_rewrite,omitempty"`
-	Headers           map[string]string `json:"headers"`
+	Headers           map[string]string `json:"headers,omitempty"`
+	RouteByHTTPUser   string            `json:"route_by_http_user,omitempty"`
 
 	// stcp
-	Sk string `json:"sk"`
+	Sk string `json:"sk,omitempty"`
 
 	// tcpmux
-	Multiplexer string `json:"multiplexer"`
+	Multiplexer string `json:"multiplexer,omitempty"`
 }
 
 type NewProxyResp struct {
-	ProxyName  string `json:"proxy_name"`
+	ProxyName  string `json:"proxy_name,omitempty"`
-	RemoteAddr string `json:"remote_addr"`
+	RemoteAddr string `json:"remote_addr,omitempty"`
-	Error      string `json:"error"`
+	Error      string `json:"error,omitempty"`
 }
 
 type CloseProxy struct {
-	ProxyName string `json:"proxy_name"`
+	ProxyName string `json:"proxy_name,omitempty"`
 }
 
 type NewWorkConn struct {
-	RunID        string `json:"run_id"`
+	RunID        string `json:"run_id,omitempty"`
-	PrivilegeKey string `json:"privilege_key"`
+	PrivilegeKey string `json:"privilege_key,omitempty"`
-	Timestamp    int64  `json:"timestamp"`
+	Timestamp    int64  `json:"timestamp,omitempty"`
 }
 
-type ReqWorkConn struct {
+type ReqWorkConn struct{}
-}
 
 type StartWorkConn struct {
-	ProxyName string `json:"proxy_name"`
+	ProxyName string `json:"proxy_name,omitempty"`
-	SrcAddr   string `json:"src_addr"`
+	SrcAddr   string `json:"src_addr,omitempty"`
-	DstAddr   string `json:"dst_addr"`
+	DstAddr   string `json:"dst_addr,omitempty"`
-	SrcPort   uint16 `json:"src_port"`
+	SrcPort   uint16 `json:"src_port,omitempty"`
-	DstPort   uint16 `json:"dst_port"`
+	DstPort   uint16 `json:"dst_port,omitempty"`
-	Error     string `json:"error"`
+	Error     string `json:"error,omitempty"`
 }
 
 type NewVisitorConn struct {
-	ProxyName      string `json:"proxy_name"`
+	ProxyName      string `json:"proxy_name,omitempty"`
-	SignKey        string `json:"sign_key"`
+	SignKey        string `json:"sign_key,omitempty"`
-	Timestamp      int64  `json:"timestamp"`
+	Timestamp      int64  `json:"timestamp,omitempty"`
-	UseEncryption  bool   `json:"use_encryption"`
+	UseEncryption  bool   `json:"use_encryption,omitempty"`
-	UseCompression bool   `json:"use_compression"`
+	UseCompression bool   `json:"use_compression,omitempty"`
 }
 
 type NewVisitorConnResp struct {
-	ProxyName string `json:"proxy_name"`
+	ProxyName string `json:"proxy_name,omitempty"`
-	Error     string `json:"error"`
+	Error     string `json:"error,omitempty"`
 }
 
 type Ping struct {
-	PrivilegeKey string `json:"privilege_key"`
+	PrivilegeKey string `json:"privilege_key,omitempty"`
-	Timestamp    int64  `json:"timestamp"`
+	Timestamp    int64  `json:"timestamp,omitempty"`
 }
 
 type Pong struct {
-	Error string `json:"error"`
+	Error string `json:"error,omitempty"`
 }
 
 type UDPPacket struct {
-	Content    string       `json:"c"`
+	Content    string       `json:"c,omitempty"`
-	LocalAddr  *net.UDPAddr `json:"l"`
+	LocalAddr  *net.UDPAddr `json:"l,omitempty"`
-	RemoteAddr *net.UDPAddr `json:"r"`
+	RemoteAddr *net.UDPAddr `json:"r,omitempty"`
 }
 
 type NatHoleVisitor struct {
-	ProxyName string `json:"proxy_name"`
+	ProxyName string `json:"proxy_name,omitempty"`
-	SignKey   string `json:"sign_key"`
+	SignKey   string `json:"sign_key,omitempty"`
-	Timestamp int64  `json:"timestamp"`
+	Timestamp int64  `json:"timestamp,omitempty"`
 }
 
 type NatHoleClient struct {
-	ProxyName string `json:"proxy_name"`
+	ProxyName string `json:"proxy_name,omitempty"`
-	Sid       string `json:"sid"`
+	Sid       string `json:"sid,omitempty"`
 }
 
 type NatHoleResp struct {
-	Sid         string `json:"sid"`
+	Sid         string `json:"sid,omitempty"`
-	VisitorAddr string `json:"visitor_addr"`
+	VisitorAddr string `json:"visitor_addr,omitempty"`
-	ClientAddr  string `json:"client_addr"`
+	ClientAddr  string `json:"client_addr,omitempty"`
-	Error       string `json:"error"`
+	Error       string `json:"error,omitempty"`
 }
 
-type NatHoleClientDetectOK struct {
+type NatHoleClientDetectOK struct{}
-}
 
 type NatHoleSid struct {
-	Sid string `json:"sid"`
+	Sid string `json:"sid,omitempty"`
 }

pkg/nathole/nathole.go

@@ -7,15 +7,15 @@ import (
 	"sync"
 	"time"
 
+	"github.com/fatedier/golib/errors"
+	"github.com/fatedier/golib/pool"
+
 	"github.com/fatedier/frp/pkg/msg"
 	"github.com/fatedier/frp/pkg/util/log"
 	"github.com/fatedier/frp/pkg/util/util"
-
-	"github.com/fatedier/golib/errors"
-	"github.com/fatedier/golib/pool"
 )
 
-// Timeout seconds.
+// NatHoleTimeout seconds.
 var NatHoleTimeout int64 = 10
 
 type SidRequest struct {
@@ -107,7 +107,7 @@ func (nc *Controller) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) {
 	session := &Session{
 		Sid:         sid,
 		VisitorAddr: raddr,
-		NotifyCh:    make(chan struct{}, 0),
+		NotifyCh:    make(chan struct{}),
 	}
 	nc.mu.Lock()
 	clientCfg, ok := nc.clientCfgs[m.ProxyName]
@@ -115,14 +115,14 @@ func (nc *Controller) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) {
 		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)
+		_, _ = 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)
+		_, _ = nc.listener.WriteToUDP(nc.GenNatHoleResponse(nil, errInfo), raddr)
 		return
 	}
 
@@ -151,7 +151,7 @@ func (nc *Controller) HandleVisitor(m *msg.NatHoleVisitor, raddr *net.UDPAddr) {
 	case <-session.NotifyCh:
 		resp := nc.GenNatHoleResponse(session, "")
 		log.Trace("send nat hole response to visitor")
-		nc.listener.WriteToUDP(resp, raddr)
+		_, _ = nc.listener.WriteToUDP(resp, raddr)
 	case <-time.After(time.Duration(NatHoleTimeout) * time.Second):
 		return
 	}
@@ -169,7 +169,7 @@ func (nc *Controller) HandleClient(m *msg.NatHoleClient, raddr *net.UDPAddr) {
 
 	resp := nc.GenNatHoleResponse(session, "")
 	log.Trace("send nat hole response to client")
-	nc.listener.WriteToUDP(resp, raddr)
+	_, _ = nc.listener.WriteToUDP(resp, raddr)
 }
 
 func (nc *Controller) GenNatHoleResponse(session *Session, errInfo string) []byte {

pkg/plugin/client/http2https.go

@@ -60,7 +60,7 @@ func NewHTTP2HTTPSPlugin(params map[string]string) (Plugin, error) {
 
 	listener := NewProxyListener()
 
-	p := &HTTPS2HTTPPlugin{
+	p := &HTTP2HTTPSPlugin{
 		localAddr:         localAddr,
 		hostHeaderRewrite: hostHeaderRewrite,
 		headers:           headers,
@@ -86,17 +86,20 @@ func NewHTTP2HTTPSPlugin(params map[string]string) (Plugin, error) {
 	}
 
 	p.s = &http.Server{
-		Handler: rp,
+		Handler:           rp,
+		ReadHeaderTimeout: 0,
 	}
 
-	go p.s.Serve(listener)
+	go func() {
+		_ = p.s.Serve(listener)
+	}()
 
 	return p, nil
 }
 
 func (p *HTTP2HTTPSPlugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBufToLocal []byte) {
 	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
-	p.l.PutConn(wrapConn)
+	_ = p.l.PutConn(wrapConn)
 }
 
 func (p *HTTP2HTTPSPlugin) Name() string {

pkg/plugin/client/http_proxy.go

@@ -22,10 +22,10 @@ import (
 	"net/http"
 	"strings"
 
-	frpNet "github.com/fatedier/frp/pkg/util/net"
-
 	frpIo "github.com/fatedier/golib/io"
 	gnet "github.com/fatedier/golib/net"
+
+	frpNet "github.com/fatedier/frp/pkg/util/net"
 )
 
 const PluginHTTPProxy = "http_proxy"
@@ -56,7 +56,9 @@ func NewHTTPProxyPlugin(params map[string]string) (Plugin, error) {
 		Handler: hp,
 	}
 
-	go hp.s.Serve(listener)
+	go func() {
+		_ = hp.s.Serve(listener)
+	}()
 	return hp, nil
 }
 
@@ -86,8 +88,7 @@ func (hp *HTTPProxy) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBuf
 		return
 	}
 
-	hp.l.PutConn(sc)
+	_ = hp.l.PutConn(sc)
-	return
 }
 
 func (hp *HTTPProxy) Close() error {
@@ -153,7 +154,7 @@ func (hp *HTTPProxy) ConnectHandler(rw http.ResponseWriter, req *http.Request) {
 		client.Close()
 		return
 	}
-	client.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
+	_, _ = client.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
 
 	go frpIo.Join(remote, client)
 }
@@ -188,7 +189,10 @@ func (hp *HTTPProxy) handleConnectReq(req *http.Request, rwc io.ReadWriteCloser)
 	defer rwc.Close()
 	if ok := hp.Auth(req); !ok {
 		res := getBadResponse()
-		res.Write(rwc)
+		_ = res.Write(rwc)
+		if res.Body != nil {
+			res.Body.Close()
+		}
 		return
 	}
 
@@ -200,10 +204,10 @@ func (hp *HTTPProxy) handleConnectReq(req *http.Request, rwc io.ReadWriteCloser)
 			ProtoMajor: 1,
 			ProtoMinor: 1,
 		}
-		res.Write(rwc)
+		_ = res.Write(rwc)
 		return
 	}
-	rwc.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
+	_, _ = rwc.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
 
 	frpIo.Join(remote, rwc)
 }

pkg/plugin/client/https2http.go

@@ -23,6 +23,7 @@ import (
 	"net/http/httputil"
 	"strings"
 
+	"github.com/fatedier/frp/pkg/transport"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
 )
 
@@ -58,12 +59,6 @@ func NewHTTPS2HTTPPlugin(params map[string]string) (Plugin, error) {
 		}
 	}
 
-	if crtPath == "" {
-		return nil, fmt.Errorf("plugin_crt_path is required")
-	}
-	if keyPath == "" {
-		return nil, fmt.Errorf("plugin_key_path is required")
-	}
 	if localAddr == "" {
 		return nil, fmt.Errorf("plugin_local_addr is required")
 	}
@@ -96,13 +91,24 @@ func NewHTTPS2HTTPPlugin(params map[string]string) (Plugin, error) {
 		Handler: rp,
 	}
 
-	tlsConfig, err := p.genTLSConfig()
+	var (
+		tlsConfig *tls.Config
+		err       error
+	)
+	if crtPath != "" || keyPath != "" {
+		tlsConfig, err = p.genTLSConfig()
+	} else {
+		tlsConfig, err = transport.NewServerTLSConfig("", "", "")
+		tlsConfig.InsecureSkipVerify = true
+	}
 	if err != nil {
 		return nil, fmt.Errorf("gen TLS config error: %v", err)
 	}
 	ln := tls.NewListener(listener, tlsConfig)
 
-	go p.s.Serve(ln)
+	go func() {
+		_ = p.s.Serve(ln)
+	}()
 	return p, nil
 }
 
@@ -118,7 +124,7 @@ func (p *HTTPS2HTTPPlugin) genTLSConfig() (*tls.Config, error) {
 
 func (p *HTTPS2HTTPPlugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBufToLocal []byte) {
 	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
-	p.l.PutConn(wrapConn)
+	_ = p.l.PutConn(wrapConn)
 }
 
 func (p *HTTPS2HTTPPlugin) Name() string {

pkg/plugin/client/https2https.go

@@ -23,6 +23,7 @@ import (
 	"net/http/httputil"
 	"strings"
 
+	"github.com/fatedier/frp/pkg/transport"
 	frpNet "github.com/fatedier/frp/pkg/util/net"
 )
 
@@ -58,12 +59,6 @@ func NewHTTPS2HTTPSPlugin(params map[string]string) (Plugin, error) {
 		}
 	}
 
-	if crtPath == "" {
-		return nil, fmt.Errorf("plugin_crt_path is required")
-	}
-	if keyPath == "" {
-		return nil, fmt.Errorf("plugin_key_path is required")
-	}
 	if localAddr == "" {
 		return nil, fmt.Errorf("plugin_local_addr is required")
 	}
@@ -101,13 +96,24 @@ func NewHTTPS2HTTPSPlugin(params map[string]string) (Plugin, error) {
 		Handler: rp,
 	}
 
-	tlsConfig, err := p.genTLSConfig()
+	var (
+		tlsConfig *tls.Config
+		err       error
+	)
+	if crtPath != "" || keyPath != "" {
+		tlsConfig, err = p.genTLSConfig()
+	} else {
+		tlsConfig, err = transport.NewServerTLSConfig("", "", "")
+		tlsConfig.InsecureSkipVerify = true
+	}
 	if err != nil {
 		return nil, fmt.Errorf("gen TLS config error: %v", err)
 	}
 	ln := tls.NewListener(listener, tlsConfig)
 
-	go p.s.Serve(ln)
+	go func() {
+		_ = p.s.Serve(ln)
+	}()
 	return p, nil
 }
 
@@ -123,11 +129,11 @@ func (p *HTTPS2HTTPSPlugin) genTLSConfig() (*tls.Config, error) {
 
 func (p *HTTPS2HTTPSPlugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBufToLocal []byte) {
 	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
-	p.l.PutConn(wrapConn)
+	_ = p.l.PutConn(wrapConn)
 }
 
 func (p *HTTPS2HTTPSPlugin) Name() string {
-	return PluginHTTPS2HTTP
+	return PluginHTTPS2HTTPS
 }
 
 func (p *HTTPS2HTTPSPlugin) Close() error {

pkg/plugin/client/socks5.go

@@ -16,13 +16,12 @@ package plugin
 
 import (
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 
-	frpNet "github.com/fatedier/frp/pkg/util/net"
-
 	gosocks5 "github.com/armon/go-socks5"
+
+	frpNet "github.com/fatedier/frp/pkg/util/net"
 )
 
 const PluginSocks5 = "socks5"
@@ -33,9 +32,6 @@ func init() {
 
 type Socks5Plugin struct {
 	Server *gosocks5.Server
-
-	user   string
-	passwd string
 }
 
 func NewSocks5Plugin(params map[string]string) (p Plugin, err error) {
@@ -43,7 +39,7 @@ func NewSocks5Plugin(params map[string]string) (p Plugin, err error) {
 	passwd := params["plugin_passwd"]
 
 	cfg := &gosocks5.Config{
-		Logger: log.New(ioutil.Discard, "", log.LstdFlags),
+		Logger: log.New(io.Discard, "", log.LstdFlags),
 	}
 	if user != "" || passwd != "" {
 		cfg.Credentials = gosocks5.StaticCredentials(map[string]string{user: passwd})
@@ -57,7 +53,7 @@ func NewSocks5Plugin(params map[string]string) (p Plugin, err error) {
 func (sp *Socks5Plugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBufToLocal []byte) {
 	defer conn.Close()
 	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
-	sp.Server.ServeConn(wrapConn)
+	_ = sp.Server.ServeConn(wrapConn)
 }
 
 func (sp *Socks5Plugin) Name() string {

pkg/plugin/client/static_file.go

@@ -19,9 +19,9 @@ import (
 	"net"
 	"net/http"
 
-	frpNet "github.com/fatedier/frp/pkg/util/net"
-
 	"github.com/gorilla/mux"
+
+	frpNet "github.com/fatedier/frp/pkg/util/net"
 )
 
 const PluginStaticFile = "static_file"
@@ -69,13 +69,15 @@ func NewStaticFilePlugin(params map[string]string) (Plugin, error) {
 	sp.s = &http.Server{
 		Handler: router,
 	}
-	go sp.s.Serve(listener)
+	go func() {
+		_ = sp.s.Serve(listener)
+	}()
 	return sp, nil
 }
 
 func (sp *StaticFilePlugin) Handle(conn io.ReadWriteCloser, realConn net.Conn, extraBufToLocal []byte) {
 	wrapConn := frpNet.WrapReadWriteCloserToConn(conn, realConn)
-	sp.l.PutConn(wrapConn)
+	_ = sp.l.PutConn(wrapConn)
 }
 
 func (sp *StaticFilePlugin) Name() string {

pkg/plugin/client/unix_domain_socket.go

@@ -57,7 +57,9 @@ func (uds *UnixDomainSocketPlugin) Handle(conn io.ReadWriteCloser, realConn net.
 		return
 	}
 	if len(extraBufToLocal) > 0 {
-		localConn.Write(extraBufToLocal)
+		if _, err := localConn.Write(extraBufToLocal); err != nil {
+			return
+		}
 	}
 
 	frpIo.Join(localConn, conn)

pkg/plugin/server/http.go

@@ -20,7 +20,7 @@ import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -43,12 +43,12 @@ type httpPlugin struct {
 }
 
 func NewHTTPPluginOptions(options HTTPPluginOptions) Plugin {
-	var url = fmt.Sprintf("%s%s", options.Addr, options.Path)
+	url := fmt.Sprintf("%s%s", options.Addr, options.Path)
 
 	var client *http.Client
 	if strings.HasPrefix(url, "https://") {
 		tr := &http.Transport{
-			TLSClientConfig: &tls.Config{InsecureSkipVerify: options.TLSVerify == false},
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: !options.TLSVerify},
 		}
 		client = &http.Client{Transport: tr}
 	} else {
@@ -116,7 +116,7 @@ func (p *httpPlugin) do(ctx context.Context, r *Request, res *Response) error {
 	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("do http request error code: %d", resp.StatusCode)
 	}
-	buf, err = ioutil.ReadAll(resp.Body)
+	buf, err = io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}