all: improve the method of import for internal packages

1. Change directory structure and Makefile to let GOPATH=`pwd`, so wherever the project directory is, just use make to build.
2016-02-25 17:38:34 +08:00
parent f32cc7a840
commit 09127a3b55
17 changed files with 28 additions and 27 deletions
--- a/src/frp/models/server/server.go
+++ b/src/frp/models/server/server.go
@@ -0,0 +1,150 @@
+package server
+
+import (
+	"container/list"
+	"sync"
+	"time"
+
+	"frp/models/consts"
+	"frp/utils/conn"
+	"frp/utils/log"
+)
+
+type ProxyServer struct {
+	Name       string
+	Passwd     string
+	BindAddr   string
+	ListenPort int64
+	Status     int64
+
+	listener     *conn.Listener  // accept new connection from remote users
+	ctlMsgChan   chan int64      // every time accept a new user conn, put "1" to the channel
+	cliConnChan  chan *conn.Conn // get client conns from control goroutine
+	userConnList *list.List      // store user conns
+	mutex        sync.Mutex
+}
+
+func (p *ProxyServer) Init() {
+	p.Status = consts.Idle
+	p.cliConnChan = make(chan *conn.Conn)
+	p.ctlMsgChan = make(chan int64)
+	p.userConnList = list.New()
+}
+
+func (p *ProxyServer) Lock() {
+	p.mutex.Lock()
+}
+
+func (p *ProxyServer) Unlock() {
+	p.mutex.Unlock()
+}
+
+// start listening for user conns
+func (p *ProxyServer) Start() (err error) {
+	p.Init()
+	p.listener, err = conn.Listen(p.BindAddr, p.ListenPort)
+	if err != nil {
+		return err
+	}
+
+	p.Status = consts.Working
+
+	// start a goroutine for listener to accept user connection
+	go func() {
+		for {
+			// block
+			// if listener is closed, err returned
+			c, err := p.listener.GetConn()
+			if err != nil {
+				log.Info("ProxyName [%s], listener is closed", p.Name)
+				return
+			}
+			log.Debug("ProxyName [%s], get one new user conn [%s]", p.Name, c.GetRemoteAddr())
+
+			// insert into list
+			p.Lock()
+			if p.Status != consts.Working {
+				log.Debug("ProxyName [%s] is not working, new user conn close", p.Name)
+				c.Close()
+				p.Unlock()
+				return
+			}
+			p.userConnList.PushBack(c)
+			p.Unlock()
+
+			// put msg to control conn
+			p.ctlMsgChan <- 1
+
+			// set timeout
+			time.AfterFunc(time.Duration(UserConnTimeout)*time.Second, func() {
+				p.Lock()
+				defer p.Unlock()
+				element := p.userConnList.Front()
+				if element == nil {
+					return
+				}
+
+				userConn := element.Value.(*conn.Conn)
+				if userConn == c {
+					log.Warn("ProxyName [%s], user conn [%s] timeout", p.Name, c.GetRemoteAddr())
+				}
+			})
+		}
+	}()
+
+	// start another goroutine for join two conns from client and user
+	go func() {
+		for {
+			cliConn, ok := <-p.cliConnChan
+			if !ok {
+				return
+			}
+
+			p.Lock()
+			element := p.userConnList.Front()
+
+			var userConn *conn.Conn
+			if element != nil {
+				userConn = element.Value.(*conn.Conn)
+				p.userConnList.Remove(element)
+			} else {
+				cliConn.Close()
+				p.Unlock()
+				continue
+			}
+			p.Unlock()
+
+			// msg will transfer to another without modifying
+			// l means local, r means remote
+			log.Debug("Join two conns, (l[%s] r[%s]) (l[%s] r[%s])", cliConn.GetLocalAddr(), cliConn.GetRemoteAddr(),
+				userConn.GetLocalAddr(), userConn.GetRemoteAddr())
+			go conn.Join(cliConn, userConn)
+		}
+	}()
+
+	return nil
+}
+
+func (p *ProxyServer) Close() {
+	p.Lock()
+	p.Status = consts.Idle
+	p.listener.Close()
+	close(p.ctlMsgChan)
+	close(p.cliConnChan)
+	p.userConnList = list.New()
+	p.Unlock()
+}
+
+func (p *ProxyServer) WaitUserConn() (closeFlag bool) {
+	closeFlag = false
+
+	_, ok := <-p.ctlMsgChan
+	if !ok {
+		closeFlag = true
+	}
+	return
+}
+
+func (p *ProxyServer) GetNewCliConn(c *conn.Conn) {
+	p.cliConnChan <- c
+}