From e4ead3eec603705f7f743936878363df0baa927a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A4=9A=E5=BF=97=E6=88=90?= <moment@xiaoman.cn>
Date: Mon, 7 May 2018 17:03:25 +0800
Subject: [PATCH] check the socket is connected or not when socket is going to
 connect.

---
 lib/Connection.js | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/Connection.js b/lib/Connection.js
index 619862ff..83229d8c 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -283,11 +283,13 @@ Connection.prototype.connect = function() {
     socket.destroy();
   }, config.connTimeout);
 
-  socket.connect({
-    port: config.port,
-    host: config.host,
-    localAddress: config.localAddress
-  });
+  if (isUndefinedOrNull(socket.remoteAddress)) {
+    socket.connect({
+        port: config.port,
+        host: config.host,
+        localAddress: config.localAddress
+    });
+  }
 };
 
 Connection.prototype.serverSupports = function(cap) {