Mailman 3 May 2019 - Twisted

[Twisted-Python] finding out what's blocking the reactor
by Chris Withers 16 May '19

16 May '19

Hi All, On some busy instances of the app I'm working with/on, we see websocket connections being dropped due to not ping/ponging in time, I'm fairly sure this is as a result of some user-written callbacks blocking the reactor for long periods of time (seconds...). What's the best way to debug a twisted application to find out what's blocking the reactor? cheers, Chris

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 12 May '19

12 May '19

1 0

[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 05 May '19

05 May '19

1 0

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01 May '19

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[Twisted-Python] Backward incompatible fixes to backward incompatible changes
by Jean-Paul Calderone 01 May '19

01 May '19

Hello all, I'd like to discuss the project policy/process for dealing with incorrect backward incompatibilities that end up released. As a case study, we could look at https://twistedmatrix.com/trac/ticket/9410 <https://twistedmatrix.com/trac/ticket/9410#comment:17> / https://github.com/twisted/twisted/pull/1106 In Twisted 16.3.0 the behavior of Request.write was changed so that it raises an AttributeError if called after the connection has closed. Prior to that release, it silently did nothing in that case. Now, three years later, we have a PR which proposed restoring the behavior of silently ignoring the write to a closed connection. The original change was incompatible. The new change is incompatible. What should win out? Jean-Paul

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