From: Paul Kienzle <paul.kienzle@nist.gov>
Date: Tue, 10 Jan 2012 17:41:43 +0000 (-0500)
Subject: make sure addresses returned from getaddrinfo are unique
X-Git-Tag: v2.2.0~37^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5d240e492480bb3fd3ee3896ed60722370f79f0f;p=thirdparty%2Ftornado.git

make sure addresses returned from getaddrinfo are unique
---

diff --git a/tornado/netutil.py b/tornado/netutil.py
index cfff0ba93..1e1bcbf91 100644
--- a/tornado/netutil.py
+++ b/tornado/netutil.py
@@ -244,8 +244,8 @@ def bind_sockets(port, address=None, family=socket.AF_UNSPEC, backlog=128):
         # exist on some platforms (specifically WinXP, although
         # newer versions of windows have it)
         flags |= socket.AI_ADDRCONFIG
-    for res in socket.getaddrinfo(address, port, family, socket.SOCK_STREAM,
-                                  0, flags):
+    for res in set(socket.getaddrinfo(address, port, family, socket.SOCK_STREAM,
+                                  0, flags)):
         af, socktype, proto, canonname, sockaddr = res
         sock = socket.socket(af, socktype, proto)
         set_close_exec(sock.fileno())