zmq: Socket.close() support linger argument; Thanks to Eric Windisch

https://github.com/eventlet/eventlet/issues/9
Regression. Worked in 0.9.16 because .close() method was not overriden.

eventlet/green/zmq.py

@@ -212,8 +212,8 @@ class Socket(_Socket):
         self._eventlet_listener = hub.add(hub.READ, self.getsockopt(FD), event)
 
     @_wraps(_Socket.close)
-    def close(self):
+    def close(self, linger=None):
-        _Socket.close(self)
+        super(Socket, self).close(linger)
         if self._eventlet_listener is not None:
             hubs.get_hub().remove(self._eventlet_listener)
             self._eventlet_listener = None

tests/zmq_test.py

@@ -58,6 +58,16 @@ got '%s'" % (zmq.ZMQError(errno), zmq.ZMQError(e.errno)))
         else:
             self.fail("Function did not raise any error")
 
+    @skip_unless(zmq_supported)
+    def test_close_linger(self):
+        """Socket.close() must support linger argument.
+
+        https://github.com/eventlet/eventlet/issues/9
+        """
+        sock1, sock2, _ = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+        sock1.close(1)
+        sock2.close(linger=0)
+
     @skip_unless(zmq_supported)
     def test_recv_spawned_before_send_is_non_blocking(self):
         req, rep, port = self.create_bound_pair(zmq.PAIR, zmq.PAIR)