diff --git a/src/models/msg/process.go b/src/models/msg/process.go
index 342ddd2..a1b84c2 100644
--- a/src/models/msg/process.go
+++ b/src/models/msg/process.go
@@ -29,6 +29,7 @@ import (
 	"github.com/fatedier/frp/src/utils/pool"
 )
 
+// deprecated
 // will block until connection close
 func Join(c1 *conn.Conn, c2 *conn.Conn) {
 	var wait sync.WaitGroup
@@ -72,6 +73,9 @@ func JoinMore(c1 *conn.Conn, c2 *conn.Conn, conf config.BaseConf, needRecord boo
 		pipeDecrypt(to, from, conf, needRecord)
 	}
 
+	if needRecord {
+		metric.OpenConnection(conf.Name)
+	}
 	wait.Add(2)
 	go encryptPipe(c1, c2)
 	go decryptPipe(c2, c1)
diff --git a/src/models/server/server.go b/src/models/server/server.go
index 14e9fc8..d150211 100644
--- a/src/models/server/server.go
+++ b/src/models/server/server.go
@@ -178,10 +178,8 @@ func (p *ProxyServer) Start(c *conn.Conn) (err error) {
 					log.Debug("Join two connections, (l[%s] r[%s]) (l[%s] r[%s])", workConn.GetLocalAddr(), workConn.GetRemoteAddr(),
 						userConn.GetLocalAddr(), userConn.GetRemoteAddr())
 
-					metric.OpenConnection(p.Name)
 					needRecord := true
 					go msg.JoinMore(userConn, workConn, p.BaseConf, needRecord)
-					metric.OpenConnection(p.Name)
 				}(c)
 			}
 		}(listener)