From 98ee1adb13e4962cfe40aaa8fa2048d099e0b2b3 Mon Sep 17 00:00:00 2001
From: cui <cuiweixie@gmail.com>
Date: Sun, 29 Mar 2026 23:16:00 +0800
Subject: [PATCH] client: close TCP connection when fmux session creation fails
 (#5262)

If realConnect() succeeds but fmux.Client returns an error, the
connection was not assigned to the connector and would leak.
---
 client/connector.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/client/connector.go b/client/connector.go
index 03d7fc29..51536750 100644
--- a/client/connector.go
+++ b/client/connector.go
@@ -119,6 +119,7 @@ func (c *defaultConnectorImpl) Open() error {
 	fmuxCfg.MaxStreamWindowSize = 6 * 1024 * 1024
 	session, err := fmux.Client(conn, fmuxCfg)
 	if err != nil {
+		conn.Close()
 		return err
 	}
 	c.muxSession = session