From f2e08a0325a28cdd3af1223312c9982525cd12bb Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Wed, 14 Jan 2015 22:44:41 +0100
Subject: Fix BaseEventLoop._create_connection_transport()

Close the transport if the creation of the transport (if the waiter) gets an
exception.
---
 asyncio/base_events.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/asyncio/base_events.py b/asyncio/base_events.py
index 35c8d74..5df5b83 100644
--- a/asyncio/base_events.py
+++ b/asyncio/base_events.py
@@ -634,7 +634,12 @@ class BaseEventLoop(events.AbstractEventLoop):
         else:
             transport = self._make_socket_transport(sock, protocol, waiter)
 
-        yield from waiter
+        try:
+            yield from waiter
+        except Exception as exc:
+            transport.close()
+            raise
+
         return transport, protocol
 
     @coroutine
-- 
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