From 4edf50d8e2ff93ca3ebfd5dce8af06c61fecd366 Mon Sep 17 00:00:00 2001
From: qetu3790 <qetu3790@163.com>
Date: Fri, 16 Jul 2021 11:40:25 +0800
Subject: [PATCH] Set TCP keepalive on inbound clusterbus connections (#9230)

Set TCP keepalive on inbound clusterbus connections to prevent memory leak

(cherry picked from commit f03af47a34ec672a7d9b18150a5be3a83681c19b)
---
 src/cluster.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cluster.c b/src/cluster.c
index 28650b327..246eb4050 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -707,6 +707,7 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
         }
         connNonBlock(conn);
         connEnableTcpNoDelay(conn);
+        connKeepAlive(conn,server.cluster_node_timeout * 2);
 
         /* Use non-blocking I/O for cluster messages. */
         serverLog(LL_VERBOSE,"Accepting cluster node connection from %s:%d", cip, cport);