Mailman 3 May 2006 - Twisted

[Twisted-Python] signal handlers and threads
by Manlio Perillo 12 May '06

12 May '06

Hi. I have written a small module for sending signals to a "foreign" Python process on Windows 2000/XP. The trunk is on http://svn.berlios.de/svnroot/repos/pykill32/trunk In this way I can send KILL, TERM and so, like in a POSIX system. This works by creating a thread on the remote process (yes, Windows allow this...) and let it call the function "raise" from the MSVCR71 DLL. This seems to work fine, and now I can stop a Twisted process with kill.py TERM pid (does twistd save the pid in a file on Windows?) but I'm not sure if signal handlers are thread safe. Regards Manlio Perillo

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Re : [Twisted-Python] Multiple thread pools
by Stéphane Brault 12 May '06

12 May '06

Hi, I can see now how 'untwisted' my threads concerns are, please forget my newbie ununderstanding ;-) Still, I need to ensure that I won't have more than x similar calls at a time. Is there a way, maybe using some of the deferred classes (deferredqueue,..) to ensure that there is no more than x simultaneous similar calls (wrapped in deferreds), the others being pending, until one is finished. My question might be stupid, but I'm quite new to twisted and the way to implement this behaviour is not clear to me (even if I found great help in the o'reilly book and the docs). Thanks, Stéphane ----- Message d'origine ---- De : Stéphane Brault <stephane_brault(a)yahoo.fr> Ã€ : twisted-python(a)twistedmatrix.com EnvoyÃ© le : Mercredi, 10 Mai 2006, 12h27mn 16s ObjetÂ : [Twisted-Python] Multiple thread pools Hi, I want to use twisted to run a server that is also a SOA client: I developp a scheduler that schedule calls to a web service regularly, tasks may be added or terminated. The web service has different calls and each task calls a specific call (too many calls in that sentence ;-)) and then update a database. The fact is that I can only have a maximum number of thread per call, I was wondering if I could have a thread pool per type of call, feeding it with my scheduled tasks and being able to change its size dynamically. I was thinking of having different groups of tasks, depending of the specific call, and feeding my thread pool according to the schedule. I'm new to twisted, so I don't really know how to do that, the thread documentation is a bit light for me. I'm also not quite sure what type of reactor would be best to use. I hope I've been clear, thanks, Stéphane _______________________________________________ Twisted-Python mailing list Twisted-Python(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python

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[Twisted-Python] How to stop a TCP server without stoping the reactor?
by xuan tang 11 May '06

11 May '06

I am trying to create a TCP server using twisted reactor. I want to stop the server from accepting TCP bind requests (and restart it later), but for some reason I don't want to use reactor.stop(). Is there another way to do it? Thanks, Xuan --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.

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[Twisted-Python] cred and stateless protocols
by Manlio Perillo 10 May '06

10 May '06

Hi. Stateless protocols like HTTP use sessions for client authentication. The session is created by the server and the client should supply it at each request. The question is: does cred support this type of authentication? Thanks Manlio Perillo

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[Twisted-Python] Multiple thread pools
by Stéphane Brault 10 May '06

10 May '06

Hi, I want to use twisted to run a server that is also a SOA client: I developp a scheduler that schedule calls to a web service regularly, tasks may be added or terminated. The web service has different calls and each task calls a specific call (too many calls in that sentence ;-)) and then update a database. The fact is that I can only have a maximum number of thread per call, I was wondering if I could have a thread pool per type of call, feeding it with my scheduled tasks and being able to change its size dynamically. I was thinking of having different groups of tasks, depending of the specific call, and feeding my thread pool according to the schedule. I'm new to twisted, so I don't really know how to do that, the thread documentation is a bit light for me. I'm also not quite sure what type of reactor would be best to use. I hope I've been clear, thanks, Stéphane

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[Twisted-Python] how to quickly set a ad hoc FTP server using Twisted
by Andy Leszczynski 09 May '06

09 May '06

I have a M$ Windows box where I need to start a ad hoc FTP server, how can I do that quickly? Thx, A.

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[Twisted-Python] how to only accept local computer requests?
by Michael Li 09 May '06

09 May '06

Hi, I have a python server with twisted framework running 24x7. I want to have a config file to setup accepting local computer requests or remote computer requests. If the config file exists, it only accepts local computer request, does not accept requests from other computers. If the config file does not exist, it accepts requests from any computers. Is there any easy way to do it ? Best regards. Michael Li ========== This email message and any attachments are for the sole use of the intended recipients and may contain proprietary and/or confidential information which may be privileged or otherwise protected from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipients, please contact the sender by reply email and destroy the original message and any copies of the message as well as any attachments to the original message.

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[Twisted-Python] Installing Zope Interface on a SUN without compiler?
by Torbjörn Einarsson 08 May '06

08 May '06

Hi, I am running twisted-1.3 on some SUN machines, and haven't changed since I couldn't install the Zope Interface without a compiler. This is unfortunate, since there is no compiler on the machines, and the rest of twisted is installable without a compiler. The Zope interface is now a part of the sumo distribution, but it seems that it needs a compiler in this case as well. Does anyone know a simple way of installing the Zope Interface without a compiler? Thanks, Torbjörn Einarsson

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[Twisted-Python] newpb 0.0.1 is released!
by Brian Warner 08 May '06

08 May '06

I'm pleased to announce that the first alpha release of "newpb", a ground-up rewrite of twisted's native RPC protocol, is now available. Years in the making, newpb offers a variety of new features, more flexible serialization than oldpb, a better security model, and the potential (not yet achieved) to be faster. For a larger list of new features, take a look at the newpb wiki page[1]. The release itself is currently available from my web directory[2]. At some point in the near future, it should also be available from the Twisted downloads directory, and from the download mirror sites as well. To use the release you will have to install it with the usual 'setup.py install' incantation: it adds a 'twisted.pb' module to your regular twisted installation, and as such it won't work if you just add the unpacked directory to your PYTHONPATH. Please note that this is an ALPHA release. Think of it as a technology preview. The wire protocol is *not* stable yet, which means that a newpb-0.0.1 client is unlikely to be able to talk to a newpb-0.0.2 server, etc. Don't deploy it anywhere unless you will be able to upgrade both ends of the wire in the future. There are likely to be significant bugs (including security holes) present, and some major design decisions still remain to be settled. For production systems, please continue to use oldpb (aka twisted.spread, as distributed in TwistedCore) for the forseable future. That said, it's high time that people get a chance to play with this code. An earlier version of it leaked into the TwistedCore-2.2.0 release before anyone could catch it (but truth be told the code there is almost identical to this 0.0.1 release), but apart from that it has been languishing in SVN[3] for far too long. I think I've been working on this intermittently for three years, hopefully with other people involved we can get this thing rolling and usable in a non-bounded amount of time. The top-level "Getting Started" documentation, with examples, is in doc/pb/using-pb.xhtml, of which a lore-rendered version is in my newpb webspace[4]. There are a number of protocol specification documents in there too. There are also lists of outstanding jobs and open design questions in doc/pb/*. The 8.5kloc of code lives in twisted/pb/*, along with an additional 4.7kloc in the 229 unit tests. Naming: the name is still in flux. We've been using "newpb" as a working title, to distinguish it from "oldpb" (which is the twisted.spread that's been shipping in TwistedCore since forever). "pb2" is another working title. It will probably have some new name in the future, hopefully one which makes its purpose more immediately obvious. The point right now is to work on the functionality, not the name. In the long run this is intended to replace oldpb/twisted.spread, but not this month. So don't worry about the name too much for now. When filing bugs and tickets, if you see a 'pb2' component in Trac, please use that. Otherwise please use the 'pb' component and include "newpb" or "pb2" in the title. Discussions here on the twisted-python mailing list or in the #twisted IRC channel on freenode.net are also appropriate. Have an Alice, Bob, and Carol-ific day, -Brian [1]: http://twistedmatrix.com/trac/wiki/NewPB [2]: http://twistedmatrix.com/~warner/newpb/TwistedPb2-0.0.1.tar.bz2 [3]: svn://svn.twistedmatrix.com/svn/Twisted/tags/releases/pb2/0.0.1 [4]: http://twistedmatrix.com/~warner/newpb/

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 06 May '06

06 May '06

Bug summary ______________________ Summary for 2006-04-30 through 2006-05-07 Bugs opened: 21 Bugs closed: 15 Total open bugs: 608 (+6) |== Type Changes |== Priority Changes |== Component Changes |Defect: -5 |Highest: -2 |Conch: +1 |Enhancement: +10 |High: -5 |Core: +8 |Task: +1 |Normal: +13 |Mail: +2 |Low: +0 |Names: -1 |Trial: -5 |Web2: +2 |Website: +0 |Words: -1 New / Reopened Bugs ______________________ ===== High ===== [#1701] Most twisted.mail.pop3.IMailbox should be allowed to return Deferreds (opened by exarkun) enhancement mail http://twistedmatrix.com/trac/ticket/1701 ===== Normal ===== [#1685] [patch] unicode fixups in words.irc and words.service (opened by j2a) defect words http://twistedmatrix.com/trac/ticket/1685 [#1686] Better XML Stanza and error support (opened by ralphm) enhancement words http://twistedmatrix.com/trac/ticket/1686 [#1687] Convert reports into queries (opened by exarkun) enhancement website http://twistedmatrix.com/trac/ticket/1687 [#1688] wxreactor ignores previously-installed sigint handlers (opened by ml.flex) defect core http://twistedmatrix.com/trac/ticket/1688 [#1689] Move the Trac configuration files into the WebSite repository (opened by tekNico) enhancement website http://twistedmatrix.com/trac/ticket/1689 [#1690] Make links to documentation for all Twisted versions (opened by tekNico) enhancement website http://twistedmatrix.com/trac/ticket/1690 [#1691] POP3Client can't deal with the continued commands request (opened by tomoyuki) defect mail http://twistedmatrix.com/trac/ticket/1691 [#1692] Intermittent test failure on win32 (test_policies.ThrottlingTestCase.testLimit) (opened by teratorn) (CLOSED, fixed) defect core http://twistedmatrix.com/trac/ticket/1692 [#1693] tkconch freeze waiting for data on Windows (opened by synapsis) enhancement conch http://twistedmatrix.com/trac/ticket/1693 [#1694] killing a process (opened by synapsis) defect core http://twistedmatrix.com/trac/ticket/1694 [#1695] raising an exception from datagramReceived should not kill a listening UDP Port (opened by radix) enhancement core http://twistedmatrix.com/trac/ticket/1695 [#1696] RPMs fail to build on RHEL 4 (opened by shieldszero) defect core http://twistedmatrix.com/trac/ticket/1696 [#1697] Merge Combinator into Twisted (opened by hypatia) enhancement core http://twistedmatrix.com/trac/ticket/1697 [#1698] Version option for Trial (opened by jml) enhancement trial http://twistedmatrix.com/trac/ticket/1698 [#1699] t.w2.vhost.AutoVHostURIRewrite doesn't pass remote_ip information (opened by dreid) enhancement web2 http://twistedmatrix.com/trac/ticket/1699 [#1700] t.w2.vhost.AutoVHostURIRewrite fails silently if no X-Forwarded-Host header is provided. (opened by dreid) enhancement web2 http://twistedmatrix.com/trac/ticket/1700 [#1702] Kill Defer.setTimeout (opened by jml) task core http://twistedmatrix.com/trac/ticket/1702 [#1703] Twisted's logging API is confusing (opened by predictive) enhancement core http://twistedmatrix.com/trac/ticket/1703 [#1705] Test failure on win32 (FilePathTestCase.testGetAndSet) (opened by teratorn) defect core http://twistedmatrix.com/trac/ticket/1705 ===== Low ===== [#1704] Misspelling at http://twistedmatrix.com/projects/conch/ (opened by shieldszero) (CLOSED, fixed) defect website http://twistedmatrix.com/trac/ticket/1704 Closed Bugs ______________________ ===== Highest ===== [#1074] domish.Element checking __class__, breaks inheritance (opened by VislabSteve, closed by ralphm, fixed) defect words http://twistedmatrix.com/trac/ticket/1074 [#1654] Optionally provide prefix context to serialization of domish Elements. (opened by ralphm, closed by ralphm, fixed) enhancement words http://twistedmatrix.com/trac/ticket/1654 ===== High ===== [#1285] twisted.trial.test.test_util.TestFindObject.test_importModule fails intermittently (opened by jml, closed by jml, fixed) defect trial http://twistedmatrix.com/trac/ticket/1285 [#1213] trial does not isolate test methods from each other (opened by exarkun, closed by jml, duplicate) defect trial http://twistedmatrix.com/trac/ticket/1213 [#1304] twisted.trial.test.test_failure_formatting.TestFailureFormatting.testFormatErroredMethod hangs indefinitely (opened by exarkun, closed by jml, duplicate) defect trial http://twistedmatrix.com/trac/ticket/1304 [#1026] [PATCH] Improve index pages of documentation (opened by hypatia, closed by tekNico, invalid) defect website http://twistedmatrix.com/trac/ticket/1026 [#1339] API docs on site should reflect recent releases (opened by ralphm, closed by tekNico, fixed) defect website http://twistedmatrix.com/trac/ticket/1339 [#1217] trial.util should not be used by non-Trial code (opened by jml, closed by jml, fixed) defect names http://twistedmatrix.com/trac/ticket/1217 ===== Normal ===== [#1683] Set up and host Planet Twisted (opened by hypatia, closed by ralphm, fixed) defect website http://twistedmatrix.com/trac/ticket/1683 [#1675] failUnlessFailure is too liberal (opened by spiv, closed by jml, fixed) defect trial http://twistedmatrix.com/trac/ticket/1675 [#1592] twisted.trial.test.test_loader.FileTest.test_packageNotInPath fails (opened by spiv, closed by jml, worksforme) defect trial http://twistedmatrix.com/trac/ticket/1592 [#1669] Parser in domish does not keep unreferenced namespace declarations (opened by ff, closed by ralphm, fixed) defect words http://twistedmatrix.com/trac/ticket/1669 [#1692] Intermittent test failure on win32 (test_policies.ThrottlingTestCase.testLimit) (opened by teratorn, closed by teratorn, fixed) defect core http://twistedmatrix.com/trac/ticket/1692 [#343 ] reactor fd cleanup between tests (opened by warner, closed by jml, duplicate) enhancement trial http://twistedmatrix.com/trac/ticket/343 ===== Low ===== [#1704] Misspelling at http://twistedmatrix.com/projects/conch/ (opened by shieldszero, closed by tekNico, fixed) defect website http://twistedmatrix.com/trac/ticket/1704

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