python - ZeroMQ + Django & uwsgi issues -


using django, need send message another, separate python program. zeromq seems lightweight , should fit bill this.

however, trying work , ends zeromq: bad address error, when setting socket zmq.push (or else). traceback:

exception type:     zmqerror exception value:    bad address ... ... sock = context.socket(zmq.push) /usr/local/lib/python2.7/dist-packages/zmq/sugar/context.py in socket s = self._socket_class(self, socket_type) self <zmq.sugar.context.context object @ 0x200dc80> socket_type 8

context made in calling function in models.py, , does:

context = zmq.context() sock = context.socket(zmq.push) < ^ crash here> sock.bind('tcp://127.0.0.1:8921') ...

it launched via

exec uwsgi_python \     --master --pidfile=/tmp/blah.pid \     --chdir=/path/to/site \     --module=program.wsgi:application \     --env django_settings_module=program.settings \     --uid user --gid 1000 \     --socket=/tmp/uwsgi_program.sock \     --chmod-socket \     --vacuum \     --harakiri=20 \     --processes=2 \     --max-requests=5000 \     --die-on-term

also have tried adding --lazy launch script, , didn't help, same error.

the wsgi.py file has

import django.core.handlers.wsgi raven.contrib.django.middleware.wsgi import sentry application = sentry(django.core.handlers.wsgi.wsgihandler())

of course, works fine runserver or, server not using uwsgi.

so seems zeromq context creates invalid somehow. trying modify wsgi.py file generate zeromq context there, using @postfork still don't solve issue, exact same error. however, don't using @postfork, since require separate codepaths depending on if use uwsgi or else, , rather more cleanly, if possible.

what overlooking ?

you have tried right approaches (@postfork, --lazy-apps, --lazy...), unless using outdated uwsgi version can suppose (as see zmq.sugar wrapper in place) need --enable-threads in uwsgi options (but first time seeing it).

the problem arise because zmq context create background thread , thread not inherited after fork().

have tried removing master , using single process (so removing fork() presence) if things go better ?


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