From 894d0c7503a955fd680cfee067fcd32e2f8b6f8b Mon Sep 17 00:00:00 2001
From: ffdfgdfg <heyingtingaaa@gmail.com>
Date: Mon, 5 Oct 2020 23:38:46 +0800
Subject: [PATCH] add tcp keep alive option for signal connections

---
 bridge/bridge.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/bridge/bridge.go b/bridge/bridge.go
index 50ecaa8..41568df 100755
--- a/bridge/bridge.go
+++ b/bridge/bridge.go
@@ -233,6 +233,12 @@ func (s *Bridge) typeDeal(typeVal string, c *conn.Conn, id int, vs string) {
 			c.Close()
 			return
 		}
+		tcpConn, ok := c.Conn.(*net.TCPConn)
+		if ok {
+			// add tcp keep alive option for signal connection
+			_ = tcpConn.SetKeepAlive(true)
+			_ = tcpConn.SetKeepAlivePeriod(5 * time.Second)
+		}
 		//the vKey connect by another ,close the client of before
 		if v, ok := s.Client.LoadOrStore(id, NewClient(nil, nil, c, vs)); ok {
 			if v.(*Client).signal != nil {