From: MinRK <benjaminrk@gmail.com>
Date: Thu, 28 Jun 2012 04:08:12 +0000 (-0700)
Subject: set SO_EXCLUSIVEADDRUSER on Windows instead of SO_REUSEADDR
X-Git-Tag: v2.4.0~45^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e152b54d9b3c43923cb4280dda476eb72dbd644;p=thirdparty%2Ftornado.git

set SO_EXCLUSIVEADDRUSER on Windows instead of SO_REUSEADDR

closes #550
---

diff --git a/tornado/netutil.py b/tornado/netutil.py
index d06a176b4..80918e797 100644
--- a/tornado/netutil.py
+++ b/tornado/netutil.py
@@ -252,7 +252,10 @@ def bind_sockets(port, address=None, family=socket.AF_UNSPEC, backlog=128):
         af, socktype, proto, canonname, sockaddr = res
         sock = socket.socket(af, socktype, proto)
         set_close_exec(sock.fileno())
-        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        if os.name == 'nt':
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_EXCLUSIVEADDRUSE, 1)
+        else:
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         if af == socket.AF_INET6:
             # On linux, ipv6 sockets accept ipv4 too by default,
             # but this makes it impossible to bind to both