How does py-amqp handle reject responses?

[endophage]

We're dealing with an issue where celery/kombu/py-amqp stack seems to be losing messages somewhere. Based on the fact the celery task ID is never received by any worker, and the queue being used becomes empty at some point, we're digging into the publishing side.

I've spent the day tracing through the calls to publish a message and noticed py-amqp defines the reject code but doesn't seem to define a handler for a reject response in its _METHODS map.

Is my understanding correct here? A reject response essentially gets ignored as far as I can tell because AbstractChannel.wait will eat any exception thrown from AbstractChannel.dispatch_method.