[Twisted-Python] How do I debug this network problem?

[Peter Westlake]

Looking at the code, _SignalReactorMixin.mainLoop() takes the output of
ReactorBase.timeout() and passes it to doIteration(). The implementation
of doIteration() in PollReactor passes the value straight through to
poll(). If there is any kind of timed call pending (which there is), the
timeout value counts down. Eventually it gets very close to zero. If
there is a burst of AMP activity around that time, there's a good chance
that the one of the poll() calls will time out.

How this leads to the data being lost is another question, but the
coincidence of events is too much to ignore.

Peter.

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