From e018ef4769e6bcf0f333735cb99238fb917de335 Mon Sep 17 00:00:00 2001
From: Tjatse <thisnamemeansnothing@gmail.com>
Date: Fri, 4 Mar 2016 19:17:52 +0800
Subject: [PATCH] fixed: _pid of socket

---
 lib/monitor.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/monitor.js b/lib/monitor.js
index a15bc2e..a97dfae 100644
--- a/lib/monitor.js
+++ b/lib/monitor.js
@@ -296,7 +296,9 @@ Monitor.prototype._connectProcSock = function (socket) {
 
     if (Array.isArray(socks) && socks.length > 0) {
       socks.forEach(function (sock) {
-        canNotBeDeleted[sock.pid.toString()] = 1;
+        if (sock._pid) {
+          canNotBeDeleted[sock._pid.toString()] = 1;
+        }
       });
     }