From 4cc826e2364acbb289f9a557659ffa2a1a8e2ea8 Mon Sep 17 00:00:00 2001
From: kaixings <buduyouqu@163.com>
Date: Mon, 22 Jun 2026 23:08:50 +0800
Subject: [PATCH] fix(client): write proxy protocol header in tls2raw plugin
 (#5362)

Co-authored-by: futrobo <futrobo@163.com>
---
 pkg/plugin/client/tls2raw.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkg/plugin/client/tls2raw.go b/pkg/plugin/client/tls2raw.go
index ccb75149..6ce05420 100644
--- a/pkg/plugin/client/tls2raw.go
+++ b/pkg/plugin/client/tls2raw.go
@@ -72,6 +72,15 @@ func (p *TLS2RawPlugin) Handle(ctx context.Context, connInfo *ConnectionInfo) {
 		return
 	}
 
+	if connInfo.ProxyProtocolHeader != nil {
+		if _, err := connInfo.ProxyProtocolHeader.WriteTo(rawConn); err != nil {
+			xl.Warnf("tls2raw write proxy protocol header to local conn error: %v", err)
+			rawConn.Close()
+			tlsConn.Close()
+			return
+		}
+	}
+
 	libio.Join(tlsConn, rawConn)
 }