Gracefully close the socket.

panta · panta · commit 2fb58a6c6be4 · 2017-11-07T11:38:03.000+01:00
Calling .shutdown on the socket before .close(), notifies the other end that we are closing down. It should also ease subsequent further startups, without dangling connections.
diff --git a/fluent/sender.py b/fluent/sender.py
@@ -197,6 +197,7 @@ def clear_last_error(self, _thread_id = None):
 
     def _close(self):
         if self.socket:
+            self.socket.shutdown(socket.SHUT_RDWR)
             self.socket.close()
         self.socket = None
 
