From a109f571e37996612186f9195161dec98987738b Mon Sep 17 00:00:00 2001
From: clowwindy <clowwindy42@gmail.com>
Date: Thu, 12 Jun 2014 17:11:05 +0800
Subject: [PATCH] fix worker master

---
 CHANGES                 | 3 +++
 shadowsocks/asyncdns.py | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index f569c16..de63c86 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2.0.4 2014-06-12
+- Fix worker master
+
 2.0.3 2014-06-11
 - Fix table encryption with UDP
 
diff --git a/shadowsocks/asyncdns.py b/shadowsocks/asyncdns.py
index cbdd6a5..f7934cb 100644
--- a/shadowsocks/asyncdns.py
+++ b/shadowsocks/asyncdns.py
@@ -423,7 +423,9 @@ class DNSResolver(object):
                 self._send_req(hostname, QTYPE_A)
 
     def close(self):
-        self._sock.close()
+        if self._sock:
+            self._sock.close()
+            self._sock = None
 
 
 def test():