Mailman 3 March 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] Re: [Twisted-commits] r16287 - Revert r16241; tests are passing.
by Jean-Paul Calderone 03 Apr '06

03 Apr '06

On Mon, 13 Mar 2006 12:33:30 -0700, Wilfredo Sanchez <wsanchez(a)wolfwood.twistedmatrix.com> wrote: >Author: wsanchez >Date: Mon Mar 13 12:33:27 2006 >New Revision: 16287 > >Modified: > trunk/twisted/web2/dav/acl.py > trunk/twisted/web2/dav/element/base.py > trunk/twisted/web2/dav/element/rfc3744.py > trunk/twisted/web2/dav/http.py > trunk/twisted/web2/dav/idav.py > trunk/twisted/web2/dav/method/propfind.py > trunk/twisted/web2/dav/resource.py > trunk/twisted/web2/dav/static.py >Log: >Revert r16241; tests are passing. This does not actually appear to be the case. The quick build which ran as a result of this commit had these results: Running 2 tests. twisted.web2.dav.test.test_prop.PROP.test_PROPFIND ... [OK] twisted.web2.dav.test.test_prop.PROP.test_PROPFIND ... [ERROR] =============================================================================== [ERROR]: twisted.web2.dav.test.test_prop.PROP.test_PROPFIND File "/home/buildbot/BuildBot/slave/quick/Twisted/twisted/web2/dav/http.py", line 287, in statusForFailure failure.raiseException() File "/home/buildbot/BuildBot/slave/quick/Twisted/twisted/web2/dav/method/propfind.py", line 119, in gotXML properties_by_status[responsecode.OK].append(resource.readProperty(property, request)) File "/home/buildbot/BuildBot/slave/quick/Twisted/twisted/web2/dav/resource.py", line 129, in readProperty return davxml.GETContentLength(self.contentLength()) File "/home/buildbot/BuildBot/slave/quick/Twisted/twisted/web2/dav/element/base.py", line 107, in __init__ assert isinstance(child, (WebDAVElement, PCDATAElement)), "Not an element: %r" % (child,) exceptions.AssertionError: Not an element: 2717L ------------------------------------------------------------------------------- Ran 2 tests in 0.371s FAILED (errors=1, successes=1) This is slightly challenging to reproduce due to the fact that "trial -u twisted.web2.dav" crashes horribly after the first run. Jean-Paul

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[Twisted-Python] Re: [Twisted-commits] r16495 - test that scripts wrapped in a CGIDirectory resource actually execute
by Jean-Paul Calderone 31 Mar '06

31 Mar '06

On Tue, 28 Mar 2006 22:29:13 -0700, David Reid <dreid(a)wolfwood.twistedmatrix.com> wrote: >Author: dreid >Date: Tue Mar 28 22:29:11 2006 >New Revision: 16495 > >Modified: > branches/childNotFound-1596/twisted/web2/test/test_cgi.py >Log: >test that scripts wrapped in a CGIDirectory resource actually execute > >Modified: branches/childNotFound-1596/twisted/web2/test/test_cgi.py >============================================================================== >--- branches/childNotFound-1596/twisted/web2/test/test_cgi.py (original) >+++ branches/childNotFound-1596/twisted/web2/test/test_cgi.py Tue Mar 28 22:29:11 2006 >@@ -161,7 +161,7 @@ > > self.failUnless(isinstance(resource, (twcgi.CGIScript,))) > >- def testAnotherDirectory(self): >+ def testSubDirectory(self): > resource, segments = self.root.locateChild(None, ('directory', > 'paths', > 'that', >@@ -170,4 +170,46 @@ > > self.failUnless(isinstance(resource, twcgi.CGIDirectory)) > >- >+ def createScript(self, filename): >+ cgiFile = open(filename, 'wt') >+ cgiFile.write("#!%s\n\n%s" % (sys.executable, >+ DUMMY_CGI)) >+ cgiFile.close() >+ os.chmod(filename, 0700) >+ >+ def testScriptsExecute(self): >+ cgiBinDir = os.path.abspath(self.mktemp()) >+ os.mkdir(cgiBinDir) >+ root = twcgi.CGIDirectory(cgiBinDir) >+ >+ self.createScript(os.path.join(cgiBinDir, 'dummy')) >+ >+ cgiSubDir = os.path.join(cgiBinDir, 'sub') >+ os.mkdir(cgiSubDir) >+ >+ self.createScript(os.path.join(cgiSubDir, 'dummy')) >+ >+ self.p = reactor.listenTCP(0, channel.HTTPFactory(server.Site(root))) >+ portnum = self.p.getHost().port >+ >+ def _firstResponse(res): >+ self.failUnlessEqual(res, "cgi output%s" % os.linesep) >+ >+ return client.getPage('http://localhost:%d/sub/dummy' % portnum) >+ >+ def _secondResponse(res): >+ self.failUnlessEqual(res, "cgi output%s" % os.linesep) >+ >+ def _cleanup(res): >+ d = self.p.stopListening() >+ d.addCallback(lambda ign: res) >+ return d >+ >+ d = client.getPage('http://localhost:%d/dummy' % portnum) >+ >+ d.addCallback(_firstResponse >+ ).addCallback(_secondResponse >+ ).addBoth(_cleanup) >+ >+ return d >+ testScriptsExecute.timeout=10 > Tabs? Jean-Paul

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[Twisted-Python] Why does Selenium need Twisted 1.3?
by Nicola Larosa 30 Mar '06

30 Mar '06

"Download and install Twisted version 1.3 (this is important, because things have been known not to work so well with Twisted 2.x)." Running the Selenium Twisted server on Linux http://agiletesting.blogspot.com/2006/03/running-selenium-twisted-server-on… Uh? -- Nicola Larosa - http://www.tekNico.net/ The first markets were markets. Not bulls, bears, or invisible hands. Not battlefields, targets, or arenas. Not demographics, eyeballs, or seats. Most of all, not consumers. -- Cluetrain

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[Twisted-Python] twisted-2 won't work with Fedora
by Neal Becker 29 Mar '06

29 Mar '06

There is a big problem with twisted on Fedora/Redhat multiarch. For example, x86_64. The problem is that Fedora puts arch-independent (.py) code into a different directory than arch-dependent code. Unfortunately, this doesn't quite work correctly with python's module search algorithm. The problem shows up when twisted-sumo is installed. Then we have: /usr/lib/python2.4/site-packages/twisted/... and /usr/lib64/python2.4/site-packages/twisted/... This won't work. I realize the problem is with python module search, but it looks like a big effort fix the code. A simpler solution would be for twisted to just avoid the problem. If twisted put core c-code into a different place, we could have: /usr/lib64/python2.4/site-packages/twisted-core That would solve the problem.

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[Twisted-Python] Call for help! Support Twisted on Microsoft Windows!
by Eric Mangold 28 Mar '06

28 Mar '06

Hello everyone, Timothy Fitz (FireMoth) and I are trying to slap some sense in to Windows and we need your help! We would like to establish a number of Windows machines accessible to developers over the Internet. As well as provide additional buildslaves on different Windows platforms. We're basically asking for donations of hardware, hosting, and software licenses. Corporate sponsors are welcome! Please see http://twistedmatrix.com/trac/wiki/Windows for all the details. Each individual and organisation who helps out will be prominently recognized on our page listing Twisted sponsors: http://twistedmatrix.com/trac/wiki/TwistedSponsors This will be linked off the front page at some point in the near future. NOTE: Please reply directly to me with offers. I don't want to discourage anyone from offering help, just because someone else has publicly offered something similar. I would prefer to get as many things on the table as possible, and then choose the best way forward. Thanks very much! -Eric Mangold

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