优化数据分析和日志记录，重构连接管理，添加对空缓冲区的处理

server/fwd/socks/request.go

@@ -49,27 +49,6 @@ type AddrSpec struct {
 	Port int
 }
 
-func (a AddrSpec) Domain() []string {
-	if a.FQDN != "" {
-		return []string{a.FQDN}
-	}
-
-	var domain []string
-
-	ch := make(chan struct{})
-	defer close(ch)
-	go func() {
-		addr, err := net.LookupAddr(a.IP.String())
-		if err == nil {
-			domain = addr
-		}
-		ch <- struct{}{}
-	}()
-	<-ch
-
-	return domain
-}
-
 func (a AddrSpec) String() string {
 	if a.FQDN != "" {
 		return fmt.Sprintf("%s (%s):%d", a.FQDN, a.IP, a.Port)
@@ -258,7 +237,11 @@ func (s *Server) handleConnect(ctx context.Context, conn net.Conn, req *Request)
 		if conn != nil {
 			utils.Close(conn)
 		}
-	case s.Conn <- ProxyConn{conn, req.realDestAddr.Address()}:
+	case s.Conn <- ProxyConn{
+		req.Authentication.Payload.ID,
+		conn,
+		req.realDestAddr.Address(),
+	}:
 	}
 	return nil
 }
@@ -352,6 +335,7 @@ func SendSuccess(user net.Conn, target net.Conn) error {
 }
 
 type ProxyConn struct {
+	Uid uint
 	// 用户连入的连接
 	Conn net.Conn
 	// 用户目标地址