Mailman 3 May 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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by Tamika 01 May '19

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] regarding xml elements
by Raj kumar 02 Oct '13

02 Oct '13

Hi, I have an xml file in my application, I have created an element using Example goes like this......... document.createElement("abc") and i appeneded it by using append() method. But how i can reflect this change to my xml file? and one more thing is i want to create element with some other parameters.... like............. <abc m=" " n=" "> </abc> and i have m and n values as strings with me. can anybody help me to create this element and write it to the existing xml file as a child of an existing element? Thanks in advance.. Raj.. Forgot the famous last words? Access your message archive online at http://in.messenger.yahoo.com/webmessengerpromo.php

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[Twisted-Python] Twisted on PyPI
by Donald Stufft 03 Jun '13

03 Jun '13

Hey there! Recently there has been a lot of work around packaging in Python. On my end of things I've been trying to clean up PyPI. Recently I've deployed a change that ensures that all *new* package names on PyPI conform to a strict set of rules. These rules are: - Must begin and end with an ASCII alphanumeric - Must contain only ASCII letters, digits, underscores, hyphens, and periods Now we are left with about 235 total projects out of ~31k who do not conform to these guidelines. Out of those 235 projects Twisted is one of the major ones (Not Twisted itself, but Twisted Web, Twisted Core, etc). Now the plan that we've come up with is to migrate any name that the only invalid characters are internal whitespace by replacing the whitespace with a -. This would Make Twisted Web Twisted-Web. This reflects already what is required to install Twisted Web via pip or easy_install. So I'm emailing you all to warn you about this upcoming change since Twisted is one of the major projects affected and also to see if the Twisted developers would prefer a different rename than Twisted-Web. ----------------- Donald Stufft PGP: 0x6E3CBCE93372DCFA // 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA

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[Twisted-Python] OSX 10.8 buildslave
by Tom Prince 02 Jun '13

02 Jun '13

Due to circumstances beyond our control, the machine that we have been using to host the OSX 10.8 buildslave is currently unavailable. As per policy[1], official support will be dropped for this platform before the next release, unless a replacement is found. Tom [1] https://twistedmatrix.com/trac/wiki/ContinuousIntegration/FixYourDamnBuildS…

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[Twisted-Python] Service downtime
by Tom Prince 29 May '13

29 May '13

The twisted project has recently acquired a new server, and there will be some donwtime in the coming week, in order to migrate services to the new server. At some point Monday or Tuesday, there will be some downtime for mail and the mailing lists, as mail-service is migrated to the new machine. For those that have accounts on cube, your data will be copied to the new machine at this point. On Wednesday, at about 10 MDT (16 UTC), there will be downtime of all twisted services, as live data is transfered over. This may last up-to a couple of hours. http://labs.twistedmatrix.com/2013/05/migration-report.html Tom Prince

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Re: [Twisted-Python] any progress for Ticket #6346, #6378?
by Alec Matusis 29 May '13

29 May '13

Hi Gelin, > As I know there are two epoll implementations in twisted, one that from twisted itself and another one comes from standard library since py 2.6. I was slightly incorrect in my email: the combination where it happens infrequently is actually Twisted 10.2 with python 2.7.3 (not Twisted 10.1 as I wrote). How can I check whether twisted is using Pythons epoll or its own in this combination? And how can I switch between epoll implementations in my app? Alec From: Gelin Yan [mailto:dynamicgl@gmail.com] Sent: Tuesday, May 28, 2013 6:42 PM To: Alec Matusis Subject: Re: [Twisted-Python] any progress for Ticket #6346, #6378? On Wed, May 29, 2013 at 8:31 AM, Alec Matusis <matusis(a)yahoo.com> wrote: > By reading these comments, It looks like recent version of twisted >may >suffer from this problem. So what version of twisted should I use? Do >I >need to keep using 10.1? This problem is very frequent on Linux with Python 2.7 / Twisted 12 combination (we had to quickly roll back- cannot operate with that combo). It never happened with Python 2.6 / Twisted 10 (as in years). It happens very infrequently with Python 2.7 / Twisted 10.1 (as 1x in weeks) Right now I have a server in this state on Python 2.7 / Twisted 10.1. It refuses 30% of new connections, spewing this error: 2013-05-28 17:28:25-0700 [twisted.internet.protocol.ServerFactory] Unhandled Error Traceback (most recent call last): File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/python/log.py", line 69, in callWithContext return context.call({ILogContext: newCtx}, func, *args, **kw) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/python/context.py", line 59, in callWithContext return self.currentContext().callWithContext(ctx, func, *args, **kw) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/python/context.py", line 37, in callWithContext return func(*args,**kw) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/epollreactor.py", line 217, in _doReadOrWrite why = selectable.doRead() --- <exception caught here> --- File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/tcp.py", line 938, in doRead transport = self.transport(skt, protocol, addr, self, s, self.reactor) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/tcp.py", line 752, in __init__ self.startReading() File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/abstract.py", line 365, in startReading self.reactor.addReader(self) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/epollreactor.py", line 100, in addReader self._add(reader, self._reads, self._writes, self._selectables, _epoll.IN, _epoll.OUT) File "/usr/local/encap/Python-2.7.3/lib/python2.7/site-packages/Twisted-10.2.0-py 2.7-linux-x86_64.egg/twisted/internet/epollreactor.py", line 88, in _add self._poller._control(cmd, fd, flags) File "_epoll.pyx", line 125, in _epoll.epoll._control exceptions.IOError: [Errno 2] No such file or directory If I restart the server, it will be stable for a couple of weeks, until some event triggers this problem again. We hope that this problem is fixed before we are really forced to migrate to newer Python, otherwise there's no real upgrade path for us using Twisted. From: twisted-python-bounces(a)twistedmatrix.com [mailto:twisted-python-bounces@twistedmatrix.com] On Behalf Of Gelin Yan Sent: Saturday, May 25, 2013 7:51 AM To: Twisted general discussion Subject: Re: [Twisted-Python] any progress for Ticket #6346, #6378? On Sat, May 25, 2013 at 3:22 AM, <exarkun(a)twistedmatrix.com> wrote: On 04:21 pm, dynamicgl(a)gmail.com wrote: >Hi All Hi Gelin, I don't have anything extra to add about the status of those two tickets (I think you meant #6373 rather than #6378, by the way) - which is exactly why I'm replying. Twisted development doesn't take place in secret. The issue tracker should always reflect the latest state of the development process. If an issue has had no comments and a branch no commits for a couple months, then it's almost certainly because no one has worked on the issue for a couple months. So you generally don't need to ask if there has been any progress, because progress will always be reflected in ticket history or in version control. > I am quite concerned about these two tickets due to recently I may >port >one of my systems to Ubuntu. Perhaps you can help out with the tickets, then! As hopefully you've noticed, one of them is currently up for review. This means a developer believes a fix for the problem has been created and is just waiting for someone else to look it over and agree that it should be applied to trunk. If this happens, then the fix will be available in the next release of Twisted, 13.1.0, which will probably happen in just a few weeks. For more details about how the review process works, please take a look at this wiki page: http://twistedmatrix.com/trac/wiki/ReviewProcess Jean-Paul > By reading these comments, It looks like recent version of twisted >may >suffer from this problem. So what version of twisted should I use? Do >I >need to keep using 10.1? > > I always use the latest version on windows. > >Regards > >gelin yan _______________________________________________ Twisted-Python mailing list Twisted-Python(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python Hi exarkun I noticed "review" tag has been removed for a while so does it imply this ticket is still pending? I am not quite familiar how epoll works on linux so my help probably can be neglected. I event can't sure how to reproduce this bug. By the way, Is it possible to use the "old" epoll implementation instead of the built in epoll from python with the latest version? It looks like this old one works quite well. Thanks Regards gelin yan Hi Alec Thanks for your info. As I know there are two epoll implementations in twisted, one that from twisted itself and another one comes from standard library since py 2.6. If I was correct, since 10.2, twisted has been used the standard epoll if applicable. I am curious which one did you use? Have you tried py 2.7 & epoll from twisted itself? Regards gelin yan

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[Twisted-Python] any progress for Ticket #6346, #6378?
by Gelin Yan 29 May '13

29 May '13

Hi All I am quite concerned about these two tickets due to recently I may port one of my systems to Ubuntu. By reading these comments, It looks like recent version of twisted may suffer from this problem. So what version of twisted should I use? Do I need to keep using 10.1? I always use the latest version on windows. Regards gelin yan

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[Twisted-Python] New registrations to this mailing list broken?
by Laurens Van Houtven 28 May '13

28 May '13

Hi, Sending this hoping that it will in fact make it through ;) Lynn Root (rougelynn) mentioned a few minutes ago on the IRC channel that she was unable to join the Twisted mailing list: 09:25 < roguelynn> hey glyph + tomprince - I'm trying to get on the twisted mailing this but see this error http://glui.me/?i=7ckizft82fokgnt/2013-05-28_at_11.22.18_AM.png/ The short version of that image (just in case it goes down or something) is that Mailman is complaining that the CGI app is run with group t-web, and it was expecting to run as www-data. Solutions include: change the group to be www-data, or re-run the configuration script with flag --with-cgi-gid=t-web Thanks! lvh

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 26 May '13

26 May '13

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[Twisted-Python] Announcing Crochet 0.7: Easily use Twisted from threaded applications
by Itamar Turner-Trauring 25 May '13

25 May '13

Crochet is an MIT-licensed library that makes it easier for threaded applications like Flask or Django to use the Twisted networking framework. Features include: - Runs Twisted's reactor in a thread it manages. - Hooks up Twisted's log system to the Python standard library loggingframework. Unlike Twisted's built-in logging bridge, this includes support for blocking Handler instances. - Provides a blocking API to eventual results (i.e. Deferred instances). This release includes better documentation and API improvements, as well as better error reporting. Here is a simple example of using Crochet: import sys from twisted.web.client import getPagefrom crochet import setup, run_in_reactorcrochet.setup() @run_in_reactordef download_page(url): return getPage(url) result = download_page(sys.argv[1])# wait() returns the result when it becomes available:print result.wait() You can see more examples, read the documentation, and download the package at: https://pypi.python.org/pypi/crochet -- Itamar Turner-Trauring, Future Foundries LLC http://futurefoundries.com/ — Twisted consulting, training and support.

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[Twisted-Python] How does Twisted handle multiple request at the same time ?
by abhishek unnikrishnan 23 May '13

23 May '13

hi guys i'm new to twisted and asynchronous programming . i have created a rpc server using twisted and xmlrpc packages . i wanted to know what will happen if two or more clients give an rpc call at the same time. how will the server handle this situation. and also wanted to know is there a way for the server to call the client in an rpc scenario . thanks in advance

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[Twisted-Python] t.test.proto_helpers.StringTransportWithDisconnection.connectionLost
by Adi Roiban 22 May '13

22 May '13

Hi, In proto_helpers, StringTransportWithDisconnection is implemented as: class StringTransportWithDisconnection(StringTransport): def loseConnection(self): if self.connected: self.connected = False self.protocol.connectionLost(error.ConnectionDone("Bye.")) In the API, I see that for IProtocol.connectionLost(reason), readon should be a Failure and not an Exception. http://twistedmatrix.com/documents/13.0.0/api/twisted.internet.interfaces.I… ------ Also checking some real code in protocols.ftp shows that reason should be a Failure, as it uses reason.check() method. https://github.com/twisted/twisted/blob/trunk/twisted/protocols/ftp.py#L2269 ------ Is this a bug in the current implementation of StringTransportWithDisconnection? Many thanks, -- Adi Roiban

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[Twisted-Python] twisted server blocking on MySQL read in main thread when using adbapi.ConnectionPool
by Dan Williams 21 May '13

21 May '13

...and I don't understand why it is running in the main (reactor) thread. I have a twisted.web server that uses adbapi.ConnectionPool to read and sometimes update a MySQL database with small amounts of data at a fairly high rate. It's been stable for quite a while, but is now seeing increasing load and been hanging a couple of times a day. monit gets triggered when the web server fails to respond to an HTTP GET health check. SIGTERM won't terminate it, so I'm using monit to send it SIGABRT. Examining the core file shows that the main (reactor) thread is blocking in a read in the mysql client library: > Program terminated with signal 6, Aborted. > #0 0x00007f549b341d2d in read () from > /lib/x86_64-linux-gnu/libpthread.so.0 > (gdb) bt 10 > #0 0x00007f549b341d2d in read () from > /lib/x86_64-linux-gnu/libpthread.so.0 > #1 0x00007f5497429112 in vio_read_buff () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #2 0x00007f549741b24f in ?? () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #3 0x00007f549741bde8 in my_net_read () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #4 0x00007f54974155ba in cli_safe_read () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #5 0x00007f5497416618 in ?? () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #6 0x00007f5497413f8b in mysql_next_result () from > /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 > #7 0x00007f549792bccc in ?? () from > /usr/lib/python2.7/dist-packages/_mysql.so > #8 0x0000000000497ea4 in PyEval_EvalFrameEx () > #9 0x0000000000498602 in PyEval_EvalFrameEx () > (More stack frames follow...) > (gdb) bt -10 > #62 0x0000000000498602 in PyEval_EvalFrameEx () > #63 0x0000000000498602 in PyEval_EvalFrameEx () > #64 0x0000000000498602 in PyEval_EvalFrameEx () > #65 0x0000000000498602 in PyEval_EvalFrameEx () > #66 0x000000000049f1c0 in PyEval_EvalCodeEx () > #67 0x00000000004a9081 in PyRun_FileExFlags () > #68 0x00000000004a9311 in PyRun_SimpleFileExFlags () > #69 0x00000000004aa8bd in Py_Main () > #70 0x00007f549a05976d in __libc_start_main () from > /lib/x86_64-linux-gnu/libc.so.6 > #71 0x000000000041b9b1 in _start () > (gdb) All of the 10 thread pool threads are sitting waiting on locks: > (gdb) thread 11 > [Switching to thread 11 (Thread 0x7f54963dd700 (LWP 2691))] > #0 0x00007f549b340fd0 in sem_wait () from > /lib/x86_64-linux-gnu/libpthread.so.0 > (gdb) bt 10 > #0 0x00007f549b340fd0 in sem_wait () from > /lib/x86_64-linux-gnu/libpthread.so.0 > #1 0x0000000000547525 in lock_PyThread_acquire_lock.49023 () > #2 0x0000000000497ea4 in PyEval_EvalFrameEx () > #3 0x000000000049f1c0 in PyEval_EvalCodeEx () > #4 0x00000000004983b8 in PyEval_EvalFrameEx () > #5 0x000000000049f1c0 in PyEval_EvalCodeEx () > #6 0x00000000004983b8 in PyEval_EvalFrameEx () > #7 0x000000000049f1c0 in PyEval_EvalCodeEx () > #8 0x00000000004a8a92 in function_call () > #9 0x00000000004e9f36 in PyObject_Call () > (More stack frames follow...) > (gdb) What has me very confused is seeing the MySQL read happening in the main thread; how can that be? This is running in AWS EC2 on a pretty busy host but there isn't any discernible correlation between times of high I/O or CPU usage and the hangs. Environment is Ubuntu 12.04.1 LTS, Python 2.7.3, Twisted 11.1.0. Thanks for any help! Dan

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[Twisted-Python] modal dialogs with the qt4reactor?
by Donal McMullan 20 May '13

20 May '13

In a 2006 email, Ed Suominen links to two copies of "a non-blocking modal dialog, immediately obtaining a deferred to the user's eventual input." http://twistedmatrix.com/pipermail/twisted-python/2006-September/014077.html I'd love to know how to do this, but both sites are unreachable. The internet giveth and the internet taketh awayeth. Can anyone help? Thanks! Donal

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 19 May '13

19 May '13

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[Twisted-Python] question : How to listen to USB-HID
by bino＠indoakses-online.com 18 May '13

18 May '13

Dear All ... Currently I have a twistd script that listen to arduino dev board. Arduino recognized as plain usb-serial, so I can do it using LineReceiver as simple as : --> class ArduinoReceiver(LineReceiver) And make it SerialService as told by http://www.mentby.com/lucas-taylor/serialport-protocol-as-a-service.html But I plan to replace arduino with digispark ( http://digistump.com/products/1 ) Problem is I just realize that this device will recognized as USB-HID Kindly please give me any enlightenment on how to handle USB-HID device with twistd ? Sincerely -bino-

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[Twisted-Python] yuyan zhang 邀请您开设 Google 电子邮件帐户
by yuyan zhang 14 May '13

14 May '13

我一直在使用 Gmail，我觉得您不妨也试试。现在邀请您创建帐户。您已受邀使用 Gmail！ yuyan zhang已邀请您开通 Gmail 帐户。 Gmail 是由 Google 推出的一项免费的电子邮件服务，其开发理念是：电子邮件可以更加直观、高效且有趣。Gmail 具备以下特点： *垃圾邮件更少* 采用 Google 的创新技术防止不受欢迎的邮件进入您的收件箱。 *大容量* 超大存储空间，永远不需要删除其他邮件。 *内置聊天功能* 与yuyan zhang和其他朋友进行实时文字或视频聊天。 *移动访问* 通过手机随时随地收发 Gmail 电子邮件。您甚至可以从 Yahoo!、Hotmail、AOL 或其他任何网络邮件服务或 POP 帐户导入您的通讯录和电子邮件。在您创建帐户以后，系统会告知yuyan zhang您的新 Gmail 地址以便你们可以保持联系。了解详情<http://mail.google.com/mail/help/intl/zh-CN/about.html> 或开始使用<http://mail.google.com/mail/a-ef12cbb304-e9d0a7f3a2-2-DEw3Xrw3KFiSawYhvBsXb…> ！注册<http://mail.google.com/mail/a-ef12cbb304-e9d0a7f3a2-2-DEw3Xrw3KFiSawYhvBsXb…> Google Inc. | 1600 Ampitheatre Parkway | Mountain View, California 94043

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Re: [Twisted-Python] Twisted-Python Digest, Vol 110, Issue 12
by yuyan zhang 14 May '13

14 May '13

can everyone help me,the error is [root@herry zhangyuyan]# python dns_udp.py /usr/local/lib/python2.7/site-packages/Twisted-13.0.0-py2.7-linux-x86_64.egg/twisted/names/dns.py:110: RuntimeWarning: urandom unavailable - proceeding with non-cryptographically secure random source 2013/5/13 <twisted-python-request(a)twistedmatrix.com> > Send Twisted-Python mailing list submissions to > twisted-python(a)twistedmatrix.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > or, via email, send a message with subject or body 'help' to > twisted-python-request(a)twistedmatrix.com > > You can reach the person managing the list at > twisted-python-owner(a)twistedmatrix.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Twisted-Python digest..." > > > Today's Topics: > > 1. Re: Twisted Web documentation out of date (Hynek Schlawack) > 2. Weekly Bug Summary (exarkun(a)twistedmatrix.com) > 3. txtorcon 0.8.0 (meejah) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 11 May 2013 18:41:24 +0200 > From: Hynek Schlawack <hs(a)ox.cx> > Subject: Re: [Twisted-Python] Twisted Web documentation out of date > To: Twisted general discussion <twisted-python(a)twistedmatrix.com> > Message-ID: <B1367445-076E-4BAF-A669-10F2F8247733(a)ox.cx> > Content-Type: text/plain; charset="utf-8" > > > > Twisted reviewers: review tickets! Tom, the recipient of the sponsored > fellowship, is busy with fixing our infrastructure, so we really need the > community to pitch in. > > > > If you're interested in reviewing tickets, please let me know. > > I spoke about that to jp already: collecting some *practical* material on > proper code review in the wiki would be really beneficiary. I've been > pointed to http://mumak.net/stuff/your-code-sucks.html which is a nice > start but doesn't one really get started. Maybe a checklist to hold to in > the beginning? Pointing out common things to look for? >

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Re: [Twisted-Python] Twisted-Python Digest, Vol 110, Issue 13
by yuyan zhang 14 May '13

14 May '13

can everyone help me,the error is [root@herry zhangyuyan]# python dns_udp.py /usr/local/lib/python2.7/site-packages/Twisted-13.0.0-py2.7-linux-x86_64.egg/twisted/names/dns.py:110: RuntimeWarning: urandom unavailable - proceeding with non-cryptographically secure random source 2013/5/14 <twisted-python-request(a)twistedmatrix.com> > Send Twisted-Python mailing list submissions to > twisted-python(a)twistedmatrix.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > or, via email, send a message with subject or body 'help' to > twisted-python-request(a)twistedmatrix.com > > You can reach the person managing the list at > twisted-python-owner(a)twistedmatrix.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Twisted-Python digest..." > > > Today's Topics: > > 1. Re: Twisted Web documentation out of date > (exarkun(a)twistedmatrix.com) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 13 May 2013 12:25:48 -0000 > From: exarkun(a)twistedmatrix.com > Subject: Re: [Twisted-Python] Twisted Web documentation out of date > To: Twisted general discussion <twisted-python(a)twistedmatrix.com> > Message-ID: <20130513122548.5372.464135425.divmod.xquotient.91@top> > Content-Type: text/plain; charset="utf-8"; format="flowed" > > On 11 May, 04:41 pm, hs(a)ox.cx wrote: > > > >>Twisted reviewers: review tickets! Tom, the recipient of the > >>sponsored fellowship, is busy with fixing our infrastructure, so we > >>really need the community to pitch in. > >> > >>If you're interested in reviewing tickets, please let me know. > > > >I spoke about that to jp already: collecting some *practical* material > >on proper code review in the wiki would be really beneficiary. I've > >been pointed to http://mumak.net/stuff/your-code-sucks.html which is a > >nice start but doesn't one really get started. Maybe a checklist to > >hold to in the beginning? Pointing out common things to look for? > > There are some things listed on: > > http://twistedmatrix.com/trac/wiki/ReviewProcess > > Far from complete, but maybe it's a start. > > Jean-Paul > > > > ------------------------------ > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python(a)twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > > > End of Twisted-Python Digest, Vol 110, Issue 13 > *********************************************** >

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[Twisted-Python] Twisted Web documentation out of date
by Pierre Jaury 13 May '13

13 May '13

Twisted Web documentation still refers to some deprecated objects that have been removed from Twisted 13.0. For instance, the latest version of this page : http://twistedmatrix.com/documents/current/web/howto/web-in-60/error-handli… refers to NoResource as being part of the twisted.web.error module while it was moved to twisted.web.resource a while ago. I did not find any other outdated reference for now, yet this might not be as isolated as it seems. Regards, Pierre. -- Pierre Jaury <pierre(a)jaury.eu> Weblog - http://kaiyou.fr GPG ID - E804FB60

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[Twisted-Python] txtorcon 0.8.0
by meejah 12 May '13

12 May '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 txtorcon 0.8.0 is now tagged and released. [1] txtorcon is a Python+Twisted-based asynchronous implementation of the Tor control protocol. It includes a state-tracking abstraction, configuration abstraction, Twisted endpoint support for hidden services, 96%+ unit-test coverage and many examples. New in this release: . issue #18: slight *API change* ICircuitListener.circuit_failed, circuit_closed, IStreamListener.stream_failed, stream_closed and stream_detach all now include any keywords in the notification method (these either lacked flags, or only included some) . launch_tor() can take a timeout (starting with a patch from hellais); . cleanup from aagbsn; . more test coverage; . run tests cleanly without graphviz (from lukaslueg); . issue #26: fix from lukaslueg; . pep8 and whitespace targets plus massive cleanup (now pep8 clean, from lukaslueg); . issue #30: fix reported by webmeister making ipaddr actually-optional; . example using synchronous web server (built-in SimpleHTTPServer) with txtorcon (from lukaslueg); . TorState can now create circuits without an explicit path; . passwords for non-cookie authenticated sessions now use a password callback (that may return a Deferred); . fixes for AddrMap in case Tor ticket #8596 is implemented; Code and built documentation may be obtained: git clone git://github.com/meejah/txtorcon.git https://github.com/meejah/txtorcon https://txtorcon.readthedocs.org/en/latest/index.html You may easily install it: pip install txtorcon easy_install txtorcon The sha256sum output is: 87fcb3bce3ac3b48583f637bf69445bd50071411dc3fded89df7600d870a3094 txtorcon-0.8.0.tar.gz thanks, meejah [1] -- (Note the tagging took place last month, and I've only now updated PyPI, ReadTheDocs, freecode, emailed this, ...) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJRjy+yAAoJEJ0UOBRRgEVQXrMH/0Kl3DmVLyqo3aTBNv1d50RL yi8u5LTZLNtuYiyJsxqTFyq8zNhfEwIPoXbsqHyNuv0hv8s6Qn4OkXh47/crhukO GpnNNTldvSQIpOfNw+ftCYF/NC0X5pOjJo/Rz1XUkFyms50cqq17i+MWvcAvaFnW Ols6+7ulh8u61ElafVxnwn1zgitkpUOOsnF8a27iXryFJ/iZFFROnCigJv2eM8pj SqcwKbVp9h1VtztoYhtEcjEPBm1NnrYGoRIjh9D3RQfEVnXgM2fU4HoGhFAqYj7M wFZv0DZBvL2s/XwV8PEi4Y4+fTJZTXE7bbHctMWjUWjhlMfMniq2oud4hZJ5ugY= =MDAq -----END PGP SIGNATURE-----

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 12 May '13

12 May '13

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[Twisted-Python] ANNOUNCING Tahoe-LAFS v1.10
by Zooko Wilcox-OHearn 10 May '13

10 May '13

Folks: Tahoe-LAFS is built on Twisted and uses Twisted extensively for networking, event queue, and more. If you want to hack on a distributed storage system written in Twisted, you are welcome to join us! Here is our new Release Announcement. Regards, Zooko ------- ANNOUNCING Tahoe, the Least-Authority File System, v1.10 The Tahoe-LAFS team is pleased to announce the immediate availability of version 1.10.0 of Tahoe-LAFS, an extremely reliable distributed storage system. Get it here: https://tahoe-lafs.org/source/tahoe-lafs/trunk/docs/quickstart.rst Tahoe-LAFS is the first distributed storage system to offer "provider-independent security" — meaning that not even the operators of your storage servers can read or alter your data without your consent. Here is the one-page explanation of its unique security and fault-tolerance properties: https://tahoe-lafs.org/source/tahoe-lafs/trunk/docs/about.rst The previous stable release of Tahoe-LAFS was v1.9.2, released on July 3, 2012. v1.10.0 is a feature release which adds a new Introducer protocol, improves the appearance of the web-based user interface, improves grid security by making introducer FURLs unguessable, and fixes many bugs. See the NEWS file [1] for details. WHAT IS IT GOOD FOR? With Tahoe-LAFS, you distribute your filesystem across multiple servers, and even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to work correctly, and continues to preserve your privacy and security. You can easily share specific files and directories with other people. In addition to the core storage system itself, volunteers have built other projects on top of Tahoe-LAFS and have integrated Tahoe-LAFS with existing systems, including Windows, JavaScript, iPhone, Android, Hadoop, Flume, Django, Puppet, bzr, mercurial, perforce, duplicity, TiddlyWiki, and more. See the Related Projects page on the wiki [3]. We believe that strong cryptography, Free and Open Source Software, erasure coding, and principled engineering practices make Tahoe-LAFS safer than RAID, removable drive, tape, on-line backup or cloud storage. This software is developed under test-driven development, and there are no known bugs or security flaws which would compromise confidentiality or data integrity under recommended use. (For all important issues that we are currently aware of please see the known_issues.rst file [2].) COMPATIBILITY This release should be compatible with the version 1 series of Tahoe-LAFS. Clients from this release can write files and directories in the format used by clients of all versions back to v1.0 (which was released March 25, 2008). Clients from this release can read files and directories produced by clients of all versions since v1.0. Servers from this release can serve clients of all versions back to v1.0 and clients from this release can use servers of all versions back to v1.0. Except for the new optional MDMF format, we have not made any intentional compatibility changes. However we do not yet have the test infrastructure to continuously verify that all new versions are interoperable with previous versions. We intend to build such an infrastructure in the future. The new Introducer protocol added in v1.10 is backwards compatible with older clients and introducer servers, however some features will be unavailable when an older node is involved. Please see docs/nodekeys.rst [14] for details. This is the eighteenth release in the version 1 series. This series of Tahoe-LAFS will be actively supported and maintained for the foreseeable future, and future versions of Tahoe-LAFS will retain the ability to read and write files compatible with this series. LICENCE You may use this package under the GNU General Public License, version 2 or, at your option, any later version. See the file "COPYING.GPL" [4] for the terms of the GNU General Public License, version 2. You may use this package under the Transitive Grace Period Public Licence, version 1 or, at your option, any later version. (The Transitive Grace Period Public Licence has requirements similar to the GPL except that it allows you to delay for up to twelve months after you redistribute a derived work before releasing the source code of your derived work.) See the file "COPYING.TGPPL.rst" [5] for the terms of the Transitive Grace Period Public Licence, version 1. (You may choose to use this package under the terms of either licence, at your option.) INSTALLATION Tahoe-LAFS works on Linux, Mac OS X, Windows, Solaris, *BSD, and probably most other systems. Start with "docs/quickstart.rst" [6]. HACKING AND COMMUNITY Please join us on the mailing list [7]. Patches are gratefully accepted -- the RoadMap page [8] shows the next improvements that we plan to make and CREDITS [9] lists the names of people who've contributed to the project. The Dev page [10] contains resources for hackers. SPONSORSHIP Atlas Networks has contributed several hosted servers for performance testing. Thank you to Atlas Networks [11] for their generous and public-spirited support. And a special thanks to LeastAuthority [12], which employs several Tahoe-LAFS developers, for their continued support. HACK TAHOE-LAFS! If you can find a security flaw in Tahoe-LAFS which is serious enough that we feel compelled to warn our users and issue a fix, then we will award you with a customized t-shirts with your exploit printed on it and add you to the "Hack Tahoe-LAFS Hall Of Fame" [13]. ACKNOWLEDGEMENTS This is the twelfth release of Tahoe-LAFS to be created solely as a labor of love by volunteers. Thank you very much to the team of "hackers in the public interest" who make Tahoe-LAFS possible. Brian Warner on behalf of the Tahoe-LAFS team May 1, 2013 San Francisco, California, USA [1] https://tahoe-lafs.org/trac/tahoe-lafs/browser/NEWS.rst [2] https://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/known_issues.rst [3] https://tahoe-lafs.org/trac/tahoe-lafs/wiki/RelatedProjects [4] https://tahoe-lafs.org/trac/tahoe-lafs/browser/COPYING.GPL [5] https://tahoe-lafs.org/trac/tahoe-lafs/browser/COPYING.TGPPL.rst [6] https://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/quickstart.rst [7] https://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-dev [8] https://tahoe-lafs.org/trac/tahoe-lafs/roadmap [9] https://tahoe-lafs.org/trac/tahoe-lafs/browser/CREDITS [10] https://tahoe-lafs.org/trac/tahoe-lafs/wiki/Dev [11] http://atlasnetworks.us/ [12] https://leastauthority.com/ [13] https://tahoe-lafs.org/hacktahoelafs/ [14] https://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/nodekeys.rst

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[Twisted-Python] Helping the Python 3 port
by Jonathan Ballet 09 May '13

09 May '13

Hi, I'm interested to give a help to port Twisted to Python 3. I gave a look at the tickets on Trac tagged with py3k and those in the Python-3.x milestone. I gave a try at http://twistedmatrix.com/trac/ticket/5802 to see what still needed to be done, and after rebasing the patch on trunk and starting to hack a few modules, I noticed that I have to do those 3 things in a bunch of places: * use the newer "except Exception as e" instead of "except Exception, e" * use the print function instead of the print statement * replace "implements(IFoo)" by the class decorator "@implementer(IFoo)" I can probably post a new patch which fixes all those things in order for Trial (as per #5802) to just start, but I wonder if this is the right approach and if it wouldn't be better to fix those first (since they are, AFAIK, compatible with Python 2.6 anyway). Any idea? Jonathan

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[Twisted-Python] is it about wokkel ?
by bino＠indoakses-online.com 07 May '13

07 May '13

Dear All ... I Really not sure whetehr it's about wokkel or not, please bare with me. I run a twistd tac in a tablet with Linux OS. Basically it's a wokkel based XMPP client that send a line to own XMPP server. This client also join a conference room, I monitor the conference room 1. First try, send to a bot jid and that bot didn't send any response. Result : After about 12-13 hour, : a. Conference said that the client left the room b. The system (Tablet) hang 2. Second try : send to the conference room , and another bot (the one at #1) echo it to room also Result : All system stable passing 24 hour test. Kindly please some body give me tell me what wokkel XMPP client will do when it got no resposponse/call from other for long time. Sincerely -bino-

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[Twisted-Python] chain certificates on the command line?
by Glyph 06 May '13

06 May '13

With the recent resolution of <http://twistedmatrix.com/trac/ticket/2061>, I am wondering if there is already a plan in progress (and maybe some existing tickets) for adding intermediary chain certificate support to client and server endpoint string syntaxes? Apologies if I lost it somewhere in the somewhat lengthy discussion on that ticket :). -glyph

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 05 May '13

05 May '13

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[Twisted-Python] suggestions for improvement in Twisted APIs
by Miika Komu 04 May '13

04 May '13

Howdy, we investigated the networking APIs of Twisted (10.2) and published our findings in Ottawa Linux Symposium 2012: http://nw.dreamhosters.com/ols/ols2012/ols2012-komu.pdf We propose two types of improvements to the framework described in full detail in section 4.3.1 of the publication. First, we suggest security bug fixes. Second, we suggest improvements that can improve either the user experience (i.e. by improving latency in IPv6 environments) or developers (after all, frameworks are a conveniency for the developers). The suggestions for improvements are briefly summarized below. Security issues --------------- * R1.3: IPv6-mapped addresses should not be present on the wire for security reasons. * R3.2: Server-side multihoming for UDP does not work properly. The framework should use SO_BINDTODEVICE option or sendmsg()/recvmsg() interfaces in a proper way. * (R5.3): The framework does not initialize the SSL/TLS implementation automatically Suggested improvements (for better end-user or developer experience) -------------------------------------------------------------------- * (R1.1): The framework does not support symbolic host names in its APIs, i.e., does not hide the details of hostname-to-address resolution from the application * R1.2: The details of IPv6 are not abstracted away from the application * R2.1: The framework does not implement DNS look ups with getaddrinfo(). This is important for IPv6 source address selection * R2.2: The framework does not support parallel DNS look ups over IPv4 and IPv6 to optimize latency * R3.3: The framework does not support parallel connect() over IPv4 and IPv6 to minimize the latency for connection set-up * (R4.1): TCP and UDP are not easily interchangeable Please refer to section 4.3.4 in the publication for a more elaborate discussion of the improvements.

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[Twisted-Python] How do I write AMP Command definitions TTD-edly?
by Laurens Van Houtven 03 May '13

03 May '13

Hi, I have no issue writing AMP responders TTD-edly, they work pretty much the way any other code would. However, I did notice that the only way I'd notice if my Command definitions themselves were broken were if my functional tests start failing. It would be nice if I could write unit test driven Command specifications, as well. The quickest I could come up with was to call makeArguments/makeResponse with a few known-good/known-bad dictionaries, and see if it blows up. Is there a smarter way to do it? -- cheers lvh

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