Refactor to proxy router

proxy/util.go

@@ -1,53 +0,0 @@
-package proxy
-
-import (
-	"io"
-	"net"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/golang/glog"
-)
-
-// race safe
-var resolved = false
-
-func resolveAddr(server *string) {
-	if !resolved {
-		if addr, err := net.ResolveTCPAddr("tcp", *server); err != nil {
-			glog.Errorln(err)
-		} else {
-			glog.Infof("remote server (%s)=>(%s)", *server, addr)
-			*server = addr.String()
-			resolved = true
-		}
-	}
-}
-
-func relay(conn1, conn2 net.Conn) {
-	wg := &sync.WaitGroup{}
-	exitFlag := new(int32)
-	wg.Add(2)
-	go redirect(conn2, conn1, wg, exitFlag)
-	redirect(conn1, conn2, wg, exitFlag)
-	wg.Wait()
-}
-
-func redirect(dst, src net.Conn, wg *sync.WaitGroup, exitFlag *int32) {
-	if _, err := io.Copy(dst, src); err != nil {
-		glog.V(1).Infof("%s<>%s -> %s<>%s: %s", src.RemoteAddr(), src.LocalAddr(), dst.LocalAddr(), dst.RemoteAddr(), err)
-	}
-
-	if atomic.CompareAndSwapInt32(exitFlag, 0, 1) {
-		// wakeup blocked goroutine
-		now := time.Now()
-		src.SetDeadline(now)
-		dst.SetDeadline(now)
-	} else {
-		src.Close()
-		dst.Close()
-	}
-
-	wg.Done()
-}