Run dev_appserver on non-loopback IP address causes enqueuing to tasks queues to fail

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Mar 27, 2012, 3:30:26 PM3/27/12

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I am running my dev_appserver instance on a non-loopback IP address (i.e the IP address bound to my network adapter). I am doing this because I want my app to be accessible outside of localhost.

My app exposes a HTTP page. This page takes the POST entity body, and then enqueues a task to a push queue using taskQueue. The call is as follows:

taskqueue.add(url='/processBatch', params={ 'requests' : requestEntityBody})

Now, when this is done, the task throws an exception:

ERROR 2012-03-27 19:12:07,424 taskqueue_stub.py:1857] An error occured while sending the task "task1" (Url: "/processBatch") in queue "default". Treating as a task error.

Traceback (most recent call last):

File "/home/gaeuser/test/src/main/python/parts/google_appengine/google/appengine/api/taskqueue/taskqueue_stub.py", line 1845, in ExecuteTask

connection.endheaders()

File "/usr/lib/python2.7/httplib.py", line 951, in endheaders

self._send_output(message_body)

File "/usr/lib/python2.7/httplib.py", line 811, in _send_output

self.send(msg)

File "/usr/lib/python2.7/httplib.py", line 773, in send

self.connect()

File "/usr/lib/python2.7/httplib.py", line 754, in connect

self.timeout, self.source_address)

File "/usr/lib/python2.7/socket.py", line 571, in create_connection

raise err

error: [Errno 111] Connection refused

WARNING 2012-03-27 19:12:07,425 taskqueue_stub.py:1937] Task task1 failed to execute. This task will retry in 0.001 seconds

I think what is happening is that while the app is listening on the non-loopback IP address endpoint, the TaskQueue api is trying to enqueue the task to the loopback endpoint, which is not active.