Hi, Roberto, Jacob, actually considering the percent of these errors is very low (after decreasing the timeout), and the fact that the browser reconnects immediately, lowers the priority of this problem significantly.
Though even if there's a long-blocking piece somewhere in the application code, I don't know of it, and it seems it's extremely hard to track down. Jacob, the difference with your case is that this happens simultaneously for several (but not all!) clients. On Tue, Mar 11, 2014 at 3:20 PM, Jacob Rief <[email protected]> wrote: > 2014-02-28 19:18 GMT+01:00 Igor Katson <[email protected]>: > > Thanks, Roberto, >> >> I have periodic messages in the log saying this: >> - [uwsgi-websocket] no PONG received in 3 seconds !!! >> >> The odd thing is that if happens, there are lots of these messages coming *at >> exact same time*, and many browser pages get disconnected. Again, at >> exact same time. The client code reconnects immediately, so that's not a >> big deal, but it feels something is wrong. >> >> do you have any idea why this might happen? >> >> P.S. After reducing the timeout to 10, these messages are much rarer, but >> still happen. As they are rare, it's hard to tell if they come at the same >> time, cause uwsgi does not log timestamps on non-request output. By the >> way, is there a way for uwsgi to to that? >> >> P.P.S. This error seems to happen right after "uwsgi.websocket_send()" >> was called in the code provided. The browser receives the message, but the >> next second there's websocket.onerror called. >> >> > Hi Igor, > I'am using uwsgi-2.0.2 and I also sometimes see: > [uwsgi-websocket] no PONG received in 3 seconds !!! > > This happens, whenever the browser goes idle, for instance, when the > screen saver of my laptop activates. > Unfortunately, in Javascript this does not trigger a Websocket onerror > event, otherwise it would be easy to have the browser reconnect to the > server. > > - Jacob > > > > _______________________________________________ > uWSGI mailing list > [email protected] > http://lists.unbit.it/cgi-bin/mailman/listinfo/uwsgi > >
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