change explanation for sndtimeo of 0 for tasks_q

Author: knagaitsev

funcx_forwarder/forwarder.py

@@ -243,9 +243,9 @@ def initialize_endpoint_queues(self):
         ''' Initialize the three queues over which the forwarder communicates with endpoints
         TaskQueue in mode='server' binds to all interfaces by default
         '''
-        # SNDTIMEO for the tasks_q should be 0 because if the endpoint is unreachable
-        # due to a network issue this will cause send calls to raise, rather than
-        # blocking and waiting
+        # SNDTIMEO for the tasks_q should be 0 because we do not want to allow
+        # send blocking in the main forwarder loop (an exception will occur instead
+        # if the send can't happen immediately)
         self.tasks_q = TaskQueue('127.0.0.1',
                                  port=self.tasks_port,
                                  SNDTIMEO=0,