From a36d524562a7f6d2e344c0aff3a2ea06a36199bb Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 7 Feb 2011 12:52:01 +0100
Subject: [PATCH] If port zero is specified, Redis will not listen for TCP
 connections

---
 redis.conf  | 1 +
 src/redis.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/redis.conf b/redis.conf
index ff694e43ac9c..b0332ea4084f 100644
--- a/redis.conf
+++ b/redis.conf
@@ -21,6 +21,7 @@ daemonize no
 pidfile /var/run/redis.pid
 
 # Accept connections on the specified port, default is 6379.
+# If port 0 is specified Redis will not listen on a TCP socket.
 port 6379
 
 # If you want you can bind a single interface, if the bind option is not
diff --git a/src/redis.c b/src/redis.c
index b18978fffc67..520fc8a9a4bf 100644
--- a/src/redis.c
+++ b/src/redis.c
@@ -852,7 +852,10 @@ void initServer() {
     createSharedObjects();
     server.el = aeCreateEventLoop();
     server.db = zmalloc(sizeof(redisDb)*server.dbnum);
-    server.ipfd = anetTcpServer(server.neterr,server.port,server.bindaddr);
+
+    if (server.port != 0)
+        server.ipfd = anetTcpServer(server.neterr,server.port,server.bindaddr);
+
     if (server.ipfd == ANET_ERR) {
         redisLog(REDIS_WARNING, "Opening port: %s", server.neterr);
         exit(1);