Fix _SelectorDatagramTransport constructor

vstinner · vstinner · commit 2c89c715f433 · 2015-01-29T02:38:01.000+01:00
Only start reading after connection_made() has been called.
diff --git a/asyncio/selector_events.py b/asyncio/selector_events.py
@@ -928,8 +928,10 @@ def __init__(self, loop, sock, protocol, address=None,
                  waiter=None, extra=None):
         super().__init__(loop, sock, protocol, extra)
         self._address = address
-        self._loop.add_reader(self._sock_fd, self._read_ready)
         self._loop.call_soon(self._protocol.connection_made, self)
+        # only start reading when connection_made() has been called
+        self._loop.call_soon(self._loop.add_reader,
+                             self._sock_fd, self._read_ready)
         if waiter is not None:
             # only wake up the waiter when connection_made() has been called
             self._loop.call_soon(waiter._set_result_unless_cancelled, None)
