[uWSGI] How to correctly use websockets with gevent, if I don't need reading, but only writing to them?

[Igor Katson]

Hi,

I'm trying to use websockets with gevent, and a bit stuck with non-blocking
api.
I don't need to read from websocket for now, but rather only send events to
the browser, when there is new information on the server.

I tried doing it first with greenlets, e.g. something like

reader_dead = gevent.Event()

def reader():
    try:
        while True:
            msg = uwsgi.websocket_recv()
            if msg:
                logging.info('Received %s', msg)
    except:
        reader_dead.set()
        raise

def writer():
    while not reader_dead.is_set():
        data = wait_for_new_data(timeout=None)
        uwsgi.websocket_send(data)

gevent.spawn(writer)
gevent.spawn(reader).join()


but uwsgi complains, that the API functions should be called from the main
executable.
Should I write the same code in non-blocking style? How can I do that? I
don't understand non-blocking well enough to write this quickly

Thanks!

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