Mailman 3 December 2013 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince 03 Mar '22

03 Mar '22

I am plannig to upgrade twisted's buildbot in the near future. In preperation for that, I am going to take down the production buildbot on Tuesday, June 26, around 1600 UTC[1]. During that time, the result of any builds done will be lost. Thus, I'd ask that people avoid committing to trunk during that time. I will send a reminder before I take down the buildbot both here, and on #twisted and #twisted-dev. Tom [1] http://timeanddate.com/worldclock/meetingtime.html?iso=20120626&p1=80&p2=22…

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[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 05 Aug '21

05 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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01 May '19

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[Twisted-Python] [ANN] txZMQ released
by Andrey Smirnov 21 Jul '14

21 Jul '14

Hi! I would like to announce txZMQ, ZeroMQ bindings for Twisted. txZMQ is based on pyzmq and requires recent ØMQ version (>=2.1). txZMQ uses ØMQ APIs to get file descriptor that is used to signal pending actions from ØMQ library IO thread running in separate thread. txZMQ should be usable with any Twisted reactor. ØMQ is: * The socket library that acts as a concurrency framework. * Carries messages across inproc, IPC, TCP, and multicast. * Connect N-to-N via fanout, pubsub, pipeline, request-reply. * Fast enough for clustered products and supercomputing. * Asynch I/O for scalable multicore message-passing apps. Bridging ØMQ and Twisted makes a nice match: fast simple messaging between Twisted instances solving complex problems :) Links: * PyPi: http://pypi.python.org/pypi/txZMQ/ * Source code: https://github.com/smira/pyzmq * pyzmq: http://pypi.python.org/pypi/pyzmq * ØMQ: http://www.zeromq.org/ -- Andrey Smirnov, Qik Web Team Lead

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[Twisted-Python] multiple log-in / perspective broker
by Daniel Sank 11 Jan '14

11 Jan '14

Suppose I have a chat room application using perspective broker. Users log in with their credentials and gain access to some kind of lobby showing all available chat rooms. Now suppose entry into each chat room is precluded by another log in step. How do I implement that? I suppose I could make another realm and listen on another port but that seems wrong. -- Daniel Sank Department of Physics Broida Hall University of California Santa Barbara, CA 93117 (805)893-3899

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[Twisted-Python] Reliable way to check if Twisted has IPv6 support?
by Amit Saha 07 Jan '14

07 Jan '14

Hello, I have a code path similar to: if Twisted has IPv6: # do this else: # do that I came up with this: Using 'getattr' to get a function which wouldn't exist if there was no IPv6 address as follows: >>> from twisted.internet import abstract >>> getattr(abstract, 'isIPv6Address') <function isIPv6Address at 0x171a488> Is there a more reliable way (which works with the Twisted-8.0+) to check this? Thanks, Amit. -- Amit Saha <http://echorand.me>

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[Twisted-Python] Filing Bugs
by Gerrat Rickert 06 Jan '14

06 Jan '14

I'd like to file a bug, but the site requires a login. I'm sure I've registered before, but don't remember my username or password. Neither the "login" link or "Register" link has any information about how to reset a password. Nor is it present on the home page, or in the FAQ. ...although the Register link does state that: "Entering an email address will enable you to reset your password if you ever forget it." (I'm pretty sure I did enter an email address when I registered ages ago) I assume there's something obvious that I'm missing, but it's flying below my visual radar, because I've tried looking everywhere on the site. I give up...can someone point me to the page/link where I can reset my password (to http://twistedmatrix.com - not the mailing list - resetting my password on the mailing list is obvious and straightforward). Thanks, Gerrat

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[Twisted-Python] Twisted Endpoints and WebSocket / Autobahn
by Tobias Oberstein 31 Dec '13

31 Dec '13

Hi, I am working on Twisted Endpoint support in Autobahn https://github.com/tavendo/AutobahnPython. So far, I made Autobahn able to talk WebSocket _over_ arbitrary Twisted Endpoints, e.g. WebSocket over Unix domain sockets works. This is already quite nifty. Is there anything like Twisted Endpoints for Processes and/or Serial? Like: endpoint = serverFromString(reactor,"process:program=/usr/local/bin/myprogram") or endpoint = serverFromString(reactor,"serial:port=/dev/tty1:baudrate=115000") That would allow to talk WebSocket over stdin/stdout to a program or a serial conneced device. Both can be useful in certain situations. I'd also like to add the other: creating an Twisted Endpoint _from_ an Autobahn server/client to be able to talk any (stream) protocol _over_ WebSocket (like SSH or VNC over WebSocket). endpoint = serverFromString(reactor,"websocket:tcp:80:url=ws://myhostname.com/somepath") I guess I need to provide an implementation of http://twistedmatrix.com/documents/current/api/twisted.internet.interfaces.… What else? Is there some docs or recipe? Thanks! /Tobias

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[Twisted-Python] txdlo - a Twisted DeferredListObserver
by Terry Jones 30 Dec '13

30 Dec '13

I just wrote a quick class called DeferredListObserver that lets you do various things with a list of deferreds. You can add observers that get passed information about the deferreds firing. You can also add deferreds to the observed list at any time (this is very useful if you're dynamically creating deferreds that you want to monitor). The class can be used to easily build things like Twisted's DeferredList or simple variants of it, or can let you separate the various behaviors of DeferredList into simpler functions. You can also do other things that I've occasionally wanted. E.g., get a deferred that fires when N of the observed deferreds have fired. Or ignore errors until one deferred succeeds, only firing with an error if all deferreds fail. Or write a DeferredPool with a notifyWhenEmpty method like the one I posted here about 4 years ago. Or (a more involved example), suppose you have 3 methods that can return you a user's avatar: a fast local cache, a filesystem, and a slow network call to Gravatar. You want to launch all three lookups at once and use the first answer. But if the cache and/or filesystems fails first, you don't want an error you instead want to take the result from Gravatar and add it to the cache and/or filesystem, as well firing a deferred with the result (wherever it comes from). Only if all three lookups fail do you want to receive an error. I'll improve the examples (and probably add tests for them) at some point. Meanwhile, the DeferredListObserver class (in txdlo.py), tests for it, and various examples can be had from https://github.com/terrycojones/txdlo Terry

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[Twisted-Python] Where is trial?
by Daniel Sank 29 Dec '13

29 Dec '13

I am trying to write tests for my project. According to the twisted howto found here http://twistedmatrix.com/documents/current/core/howto/trial.html I should use trial. When I try to run trial from the command line (Windows) I get the usual "that's not a program I know about" error. The howto says that there's a twisted bin directory that should be in the path, but looking around in my python installation, I see no such thing. I checked lib/site-packages/twisted and /Scripts. What am I missing here? I installed twisted using the executable windows installer. -Daniel

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