Mailman 3 April 2006 - Twisted

[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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[Twisted-Python] Get IP of connecting client in XMLRPC server
by Remy C. Cool 28 Apr '13

28 Apr '13

Hello, On 18 May 2004, the following message was posted to this mailinglist: Jp Calderone exarkun at divmod.com wrote: >Daniel Newton wrote: > > I have a simple XML-PRC server similar to the example below: > > from twisted.web import xmlrpc, server > > class Example(xmlrpc.XMLRPC): > """An example object to be published.""" > > def xmlrpc_add(self, a, b): > """Return sum of arguments.""" > return a + b def xmlrpc_whatIsMyAddress(self): return self.transport.getPeer().host > > if __name__ == '__main__': > from twisted.internet import reactor > r = Example() > reactor.listenTCP(7080, server.Site(r)) > reactor.run() > > I want to be able to get the address of the client that calls the xmlrpc > method can anyone help me with this? This solution didn't work because 'transport' isn't a property of the Example class. I'm currently in the process of changing from a customized SimpleXMLRPCServer to a twisted XMLRPC server solution and I need to insert the client IP into the attributes passed to the called xmlrpc method. Anyone who knows the answer and is willing to share the info? Regards, Remy

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[Twisted-Python] Problem: spawnProcess() never ending when installSignalHandlers=False
by Matt Feifarek 03 Feb '07

03 Feb '07

Hello. I'm using Twisted 1.3.0 on python2.4 on an Ubuntu-Hoary x86 Linux box. I'm using twisted and spawnProcess() with a Queue structure to chain processes that need to be called (specifically, imagemagick commands). I use the "processEnded" event/method of t.i.p.ProcessProtocol to go from one task to the next. Twisted shares a python process with a multi-threaded web-app-kit (Webware) so it has to be run in a thread. This worked well on other older versions of twisted and older versions of python; also on linux. I've tracked down the problem to be twisted itself (or my incorrect use of it) rather than my code. This example illustrates it: ------------------------------------------------- from twisted.internet import reactor from twisted.internet.protocol import ProcessProtocol class MyProt( ProcessProtocol ): def processEnded(self, reason): print "ended.", reason executable = '/bin/touch' args = ( '/tmp/foo.txt', ) args = (executable,) + tuple(args) reactor.spawnProcess( MyProt(), executable, args ) reactor.callLater( 5, reactor.stop ) #reactor.run() reactor.run(installSignalHandlers=False) ------------------------------------------------- As is, this code never runs the "processEnded()" method of MyProt(). If I change the reactor.run() parameter to leave the signal handlers on, it works. Note that I need to leave the signal handlers turned off because I can't run the reactor in the main thread; Webware needs that. I also know that the subprocess is giving up its file descriptors; I can see that if I put more print statements into MyProt(). And I know that the subprocess is working; /tmp/foo.txt is there. It seems that somehow the reactor is using signals to notice when a process has ended; this makes a certain ammount of sense intuitively, though I don't understand the nitty-gritty of processes and signals at all. And more importantly, this has worked before on other combinations of twisted/python. Is this a bug? If so, has it been fixed? If not, what should I do to detect when a spawned process is finished? Thanks very much. Twisted rocks.

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[Twisted-Python] Service dependencies
by Matt Goodall 10 Jul '06

10 Jul '06

Hi, I have a couple of services. The second is dependent on the first being fully initialised before the second gets set up. I thought that the order of Service startup was typically handled by organising services in a hierarchy, and that the startup of the hierarchy understood deferreds. I was wrong - service.Application is a MultiService and only understands deferreds in stopService. There's a DependentMultiService class in twisted.internet.app but that entire module has been deprecated. Is there a reason why the MultiService does not support deferreds in startService? Is there a reason that DependentMultiService was not moved across to the twisted.application package? In other words, what is the recommended way of starting services in the correct order, including waiting for them to get initialised fully, these days? Thanks. - Matt -- __ / \__ Matt Goodall, Pollenation Internet Ltd \__/ \ w: http://www.pollenation.net __/ \__/ e: matt(a)pollenation.net / \__/ \ t: +44 (0)113 2252500 \__/ \__/ / \ Any views expressed are my own and do not necessarily \__/ reflect the views of my employer.

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[Twisted-Python] Status of wxPython support in Twisted 2.1: use wxreactor
by Itamar Shtull-Trauring 01 Jul '06

01 Jul '06

wxreactor in Twisted 2.1 uses threadedselectreactor. This means that wx apps ought to use wxreactor, not TSR directly; there are some issues with vanilla TSR wx integration that are also present in wxreactor, but will be fixed in future versions of wxreactor. What's broken (there may be more): 1. reactor shutdown events aren't handled correctly (e.g. Deferred returned from during-shutdown event). 2. Signal handling for e.g. Ctrl-C is caught by wx, not twisted. In order to get these fixed I need your help. I have a version of wxreactor that *probably* fixes these in Subversion trunk. You can try it out by running doc/core/examples/wxdemo.py. Hitting Ctrl-C, choosing Exit from the menu or closing the menu all should have the same effect - the application logs "shutting down in 0.3 seconds...", "2", "1", "0" then exits. In addition, "Hello world" should continue to be printed while the dialog box is open or you are holding down a menu. Please try this out, and report success or failure at <http://twistedmatrix.com/bugs/issue1235>. I'm especially interested to hear if it works on Windows or Mac OS X. Please include your OS and version of wxPython/wxWidgets when submitting reports.

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[Twisted-Python] Do Twisted support LMTP servers?
by Jesus Cea 06 Jun '06

06 Jun '06

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Twisted is very extensive in protocol support, managing smtp, pop3 and imap4, for example. I was wondering if there is any LMTP server project out there. It should be fairly simple, since LMTP is very very similar to usual SMTP. I need to use LMTP for a local project, and I was wondering if tiwsted could be used to fill this gap. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ jcea(a)argo.es http://www.argo.es/~jcea/ _/_/ _/_/ _/_/ _/_/ _/_/ jabber / xmpp:jcea@jabber.org _/_/ _/_/ _/_/_/_/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iQCVAwUBRDb7+plgi5GaxT1NAQK4rQP9EDdkMc0b83teXKB/XM22fV2gq3z/uEj1 RBjeHGSPOs5ogg1+/E4eiq8vq83mNTBDzxVJriN20UbrHgOcC+kBjfnCB8MCPnER 1tEorRnb19Siy+xnu0+rJ3XtNLJXJubMiXxm/5ig27Hl+UChnQLCthiqL1h0P22/ yi9LCprkRZ4= =fG6b -----END PGP SIGNATURE-----

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[Twisted-Python] Twisted Sprint in Australia
by Jonathan Lange 19 May '06

19 May '06

Hello, I reckon it's about time for another AU sprint. The likely locations are Sydney or Melbourne, and the likely dates are any weekend in May, the first weekend of June or the last weekend of June. Topics are as yet undecided. I intend to remove wait() entirely. I tentatively suggest that the Sprint be: - In Sydney - June 24-25 (patches accepted) Can you make it? Reply today! cheers, jml

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[Twisted-Python] ProducerConsumerProxy problem
by Haris Andrianakis 01 May '06

01 May '06

Hi, I'm trying to setup a ProducerConsumerProxy between a protocols.basic.FileSender producer and a TCP Protocol transport. I have the following code: fileObj = file('test.txt','r') proxy = protocols.pcp.ProducerConsumerProxy(self.transport) producer = protocols.basic.FileSender() dd = producer.beginFileTransfer(fileObj, proxy) dd.addCallback(self.uploadDone) dd.addErrback(self.uploadError) proxy.registerProducer(producer, False) The problem is that only 16KB of data are transfered and then the transfer pauses. Also if I use BasicProducerConsumerProxy no data at all gets transfered. I think that the proxy doesn't call resumeProducing() on the FileSender producer and thats why the transfer seems to halt. Any suggestions ?

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[Twisted-Python] newpb status?
by Phil Christensen 30 Apr '06

30 Apr '06

Just out of curiosity, I wondered where things stood with newpb. I'm eagerly awaiting its arrival; apologies if there was a list announcement I missed. I got an overview from Brian a few months back, and it got me all pumped ;-)... Is there any documentation available yet? Even just some example code would be nice; I'd like to get into newpb, even if it's in a state of flux. Unfortunately, I can't seem to find the time to lurk in IRC that much, so i kind of need some sort of asynchronous instruction... I've certainly got no problems with reading in-code docs, but I would definitely appreciate a little bit of a starter howto or something... -phil

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[Twisted-Python] Re: [Twisted-commits] r16688 - newpb: add NEWS/README, update Changelog for the 0.0.1 release
by Itamar Shtull-Trauring 30 Apr '06

30 Apr '06

So... what will new protocol be called? pb2/newpb is confusing, I think.

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