Latest kombu and amqp release causes non-blocking error on Windows

[Ed McDonagh]

Environment:

• Windows 10 Professional
• Python 2.7 from Anaconda
• pip install openrem (actually a pip install -e path\to\repo\)
• kombu installed is 4.2.2.post1
• amqp installed is 2.4.0

Attempting an export results in a 500 error, with DEBUG=True we get

• [Errno 10035] A non-blocking socket operation could not be completed immediately
• Exception Location: C:\path\to\virtenv\lib\site-packages\amqp\transport.py in _read, line 430

Reviewing this stackoverflow answer, I did the following:

• pip install kombu==4.2.1
• pip install amqp==2.3.2

Restarted Celery and the runserver, and now my exports work fine.

Need to consider if we have to fix the versions, which would be a shame and difficult to maintain!

Haven't tested on linux.

[Ed McDonagh]

Not an issue on linux, so must be a Windows thing.

Voided therefore if we get Windows users to downgrade Celery to 3.1.25 as that will take kombu and amqp back with it!

[Ed McDonagh]

Specifying celery==3.1.25 for Windows users. Refs #349, will address ref #723

→ <<cset 3d1c31057ed2>>

[Ed McDonagh]

Adding refs #349, #705, #723 to changes. [skip ci]

→ <<cset f4d7081dc6c5>>

[Ed McDonagh]

Merged in issue349celery (pull request #277)

RabbitMQ, Celery and Flower task management changes

Fixes #349, #705, #723, refs #637, #662

Approved-by: Luuk Approved-by: David Platten

→ <<cset f4bb4875a6fc>>