Mailman 3 October 2012 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince March 3, 2022

March 3, 2022

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 Aug. 5, 2021

Aug. 5, 2021

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. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |… [View More]

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by Tamika May 1, 2019

May 1, 2019

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[Twisted-Python] [ANN] txZMQ released
by Andrey Smirnov July 21, 2014

July 21, 2014

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,… [View More]

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[Twisted-Python] regarding xml elements
by Raj kumar Oct. 2, 2013

Oct. 2, 2013

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 … [View More]

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[Twisted-Python] Get IP of connecting client in XMLRPC server
by Remy C. Cool April 28, 2013

April 28, 2013

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 … [View More]

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[Twisted-Python] GSoC 2012 Project, TwistedChecker
by Raphael Shu Nov. 29, 2012

Nov. 29, 2012

Hi everyone, I'm a student of GSoC 2012, from University of Tsukuba, Japan. I'm glad to be selected as a practicer in Twisted project this year. Then in these serveral months, my project is to create a code standard checker for Twisted, Basically, I will follow "Twisted Coding Standard", it can be found at: http://twistedmatrix.com/trac/browser/trunk/doc/core/development/policy/cod… I hope finally this project could be integrated into our main ticket system, so it would automatically … [View More]

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[Twisted-Python] Create client in Server factory
by Grégoire Leroy Nov. 6, 2012

Nov. 6, 2012

Hi, I have a server who receive data from clients A/B/C (remote machines). I want to use a client D (on the same machine than the server) to send this data to another server (remote). The difficulty is, I want to use the same client D connection for any client. I don't want open an new connection each time. First thing I would think is to create the connection in my server factory, and use client's methods in my server protocol, for example with [...] class LocalProxyFactory(Factory): … [View More]

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[Twisted-Python] deferToThread and reactor loop
by Tobias Oberstein Nov. 2, 2012

Nov. 2, 2012

Hi, I've got a question regarding deferToThread / runWithConnection I have a network server that accepts RPCs and forwards those to a relational database calling stored procedures. The call of the stored procedures is happening via "runWithConnection" .. that is on a background thread pool (since that DBs driver is blocking). Now, when there is a large number of RPCs coming in roughly at once, the latency of each call forwarded to the RDBMs increased into the 10's of ms. I have created a … [View More]self-contained test program without DB etc that I think reproduces the "issue": https://github.com/oberstet/scratchbox/blob/master/python/twisted/threadpoo… ************** Am I correct that "deferToThread" does not immediately forward the call to a background thread, but only the next time the reactor loop runs? ************** At least that is what I conclude from the test program's option https://github.com/oberstet/scratchbox/blob/master/python/twisted/threadpoo… which produces totally different timing results: $ python test.py 800 no 20 2012-10-29 18:41:11+0100 [-] Log opened. 2012-10-29 18:41:11+0100 [-] Using Twisted reactor class <class 'twisted.internet.iocpreactor.reactor.IOCPReactor'> 2012-10-29 18:41:11+0100 [-] Thread pool size suggested: 20 2012-10-29 18:41:11+0100 [-] Worker count: 800 2012-10-29 18:41:11+0100 [-] release to reactor between deferToThread: False 2012-10-29 18:41:11+0100 [-] total run-time: 121 ms 2012-10-29 18:41:11+0100 [-] avg. thread switch IN time: 61177 us 2012-10-29 18:41:11+0100 [-] max. thread switch IN time: 79436 us 2012-10-29 18:41:11+0100 [-] avg. thread switch OUT time: 16021 us 2012-10-29 18:41:11+0100 [-] max. thread switch OUT time: 23150 us 2012-10-29 18:41:11+0100 [-] Main loop terminated. $ python test.py 800 yes 20 2012-10-29 18:41:14+0100 [-] Log opened. 2012-10-29 18:41:14+0100 [-] Using Twisted reactor class <class 'twisted.internet.iocpreactor.reactor.IOCPReactor'> 2012-10-29 18:41:14+0100 [-] Thread pool size suggested: 20 2012-10-29 18:41:14+0100 [-] Worker count: 800 2012-10-29 18:41:14+0100 [-] release to reactor between deferToThread: True 2012-10-29 18:41:14+0100 [-] total run-time: 201 ms 2012-10-29 18:41:14+0100 [-] avg. thread switch IN time: 127 us 2012-10-29 18:41:14+0100 [-] max. thread switch IN time: 5131 us 2012-10-29 18:41:14+0100 [-] avg. thread switch OUT time: 166 us 2012-10-29 18:41:14+0100 [-] max. thread switch OUT time: 7886 us 2012-10-29 18:41:15+0100 [-] Main loop terminated. === Could someone pls enlighten me rgd the "issue"? What's the point, and how to interpret the timings? Any hints greatly appreciated! Thanks, Tobias Above timings are on Windows. Here other platforms: Results on FreeBSD ================ [oberstet@www ~/scm/scratchbox/python/twisted/threadpoollatency]$ python test.py 800 no 20 2012-10-29 17:53:37+0000 [-] Log opened. 2012-10-29 17:53:37+0000 [-] Using Twisted reactor class <class 'twisted.internet.kqreactor.KQueueReactor'> 2012-10-29 17:53:37+0000 [-] Thread pool size suggested: 20 2012-10-29 17:53:37+0000 [-] Worker count: 800 2012-10-29 17:53:37+0000 [-] release to reactor between deferToThread: False 2012-10-29 17:53:37+0000 [-] total run-time: 469 ms 2012-10-29 17:53:37+0000 [-] avg. thread switch IN time: 244311 us 2012-10-29 17:53:37+0000 [-] max. thread switch IN time: 300846 us 2012-10-29 17:53:37+0000 [-] avg. thread switch OUT time: 2347 us 2012-10-29 17:53:37+0000 [-] max. thread switch OUT time: 25703 us 2012-10-29 17:53:37+0000 [-] Main loop terminated. [oberstet@www ~/scm/scratchbox/python/twisted/threadpoollatency]$ python test.py 800 yes 20 2012-10-29 17:53:44+0000 [-] Log opened. 2012-10-29 17:53:44+0000 [-] Using Twisted reactor class <class 'twisted.internet.kqreactor.KQueueReactor'> 2012-10-29 17:53:44+0000 [-] Thread pool size suggested: 20 2012-10-29 17:53:44+0000 [-] Worker count: 800 2012-10-29 17:53:45+0000 [-] release to reactor between deferToThread: True 2012-10-29 17:53:45+0000 [-] total run-time: 707 ms 2012-10-29 17:53:45+0000 [-] avg. thread switch IN time: 410 us 2012-10-29 17:53:45+0000 [-] max. thread switch IN time: 6184 us 2012-10-29 17:53:45+0000 [-] avg. thread switch OUT time: 310 us 2012-10-29 17:53:45+0000 [-] max. thread switch OUT time: 1331 us 2012-10-29 17:53:45+0000 [-] Main loop terminated. Results on Linux ============= [webmq@webmqpgcentos threadpoollatency]$ python test.py 800 no 20 2012-10-29 18:56:13+0100 [-] Log opened. 2012-10-29 18:56:13+0100 [-] Using Twisted reactor class <class 'twisted.internet.epollreactor.EPollReactor'> 2012-10-29 18:56:13+0100 [-] Thread pool size suggested: 20 2012-10-29 18:56:13+0100 [-] Worker count: 800 2012-10-29 18:56:13+0100 [-] release to reactor between deferToThread: False 2012-10-29 18:56:13+0100 [-] total run-time: 178 ms 2012-10-29 18:56:13+0100 [-] avg. thread switch IN time: 77332 us 2012-10-29 18:56:13+0100 [-] max. thread switch IN time: 123225 us 2012-10-29 18:56:13+0100 [-] avg. thread switch OUT time: 22048 us 2012-10-29 18:56:13+0100 [-] max. thread switch OUT time: 43779 us 2012-10-29 18:56:13+0100 [-] Main loop terminated. [webmq@webmqpgcentos threadpoollatency]$ python test.py 800 yes 20 2012-10-29 18:56:14+0100 [-] Log opened. 2012-10-29 18:56:14+0100 [-] Using Twisted reactor class <class 'twisted.internet.epollreactor.EPollReactor'> 2012-10-29 18:56:14+0100 [-] Thread pool size suggested: 20 2012-10-29 18:56:14+0100 [-] Worker count: 800 2012-10-29 18:56:15+0100 [-] release to reactor between deferToThread: True 2012-10-29 18:56:15+0100 [-] total run-time: 370 ms 2012-10-29 18:56:15+0100 [-] avg. thread switch IN time: 694 us 2012-10-29 18:56:15+0100 [-] max. thread switch IN time: 3204 us 2012-10-29 18:56:15+0100 [-] avg. thread switch OUT time: 483 us 2012-10-29 18:56:15+0100 [-] max. thread switch OUT time: 7991 us 2012-10-29 18:56:15+0100 [-] Main loop terminated. [View Less]

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[Twisted-Python] Transplating a request's transport (SockJS)
by Laurens Van Houtven Oct. 30, 2012

Oct. 30, 2012

Hi, I've been trying to play with SockJS + Twisted. There's an implementation here: https://github.com/Fugiman/sockjs-twisted However, I'm already running a web server, and as the README says sockjs-twisted is *not* intended to be run together with a web server. It doesn't really use any of the mechanics in twisted.web. So, I tried to make it work using Resources anyway: reconstructing the equivalent bytes in render, and replaying them with the SockJSFactory: class SockJSResource(resource.… [View More]

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[Twisted-Python] a question about monotonic clock
by gelin yan Oct. 30, 2012

Oct. 30, 2012

Hi All I am quite concerned the ticket 2424 due to our system use reactor.callLater almost anywhere. I know this issue is hard to be finxed otherwise It wouldn't exist for such a long time. So any work around before we getting fix it? The only way I can do is to disable NTP or stop process, sync the time manually and then restart the process. The latter way is hard to be accepted due to we have many machines. Regards gelin yan

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com Oct. 28, 2012

Oct. 28, 2012

1 0

[Twisted-Python] Avoiding network when testing Perspective Broker
by Maxim Lacrima Oct. 26, 2012

Oct. 26, 2012

Hi! I am learning to develop TDD way. I want to create a server that understands PB protocol. Initially I thought it would be a good idea to avoid real network connections in my tests, so I tried to use `proto_helpers.StringTransport`: ---------- import cStringIO from twisted.spread import pb from twisted.trial import unittest from twisted.test import proto_helpers class Document(pb.Root): def remote_convert(self, props): self.props = props class DocTestCase(unittest.TestCase):… [View More] def setUp(self): # set up server self.doc = Document() factory = pb.PBServerFactory(self.doc) self.broker = factory.buildProtocol(('127.0.0.1', 0)) tr = proto_helpers.StringTransport() self.broker.makeConnection(tr) # this is what a client sends self.props = {'name': 'MyDoc', 'path': '/path/'} # prepare data serialized_props = self.broker.serialize(self.props) msg = ('message', 1, 'root', 'convert', 1, ['tuple', serialized_props], ['dictionary']) io = cStringIO.StringIO() self.broker._encode(msg, io.write) self.chunk = io.getvalue() def test_convert(self): # data arrived self.broker.dataReceived(self.chunk) self.assertEqual(self.props, self.doc.props) ---------- However, `Document.remote_convert` is never executed so the test above fails. After debugging I discovered that `Broker._encode` produces different results depending on whether `self.broker.makeConnection(tr)` is called or not. And I created a test case that shows a difference. Here `test_convert1` succeeds while `test_convert2` fails: ---------- class DocTestCase(unittest.TestCase): def setUp(self): self.doc = Document() factory = pb.PBServerFactory(self.doc) self.broker = factory.buildProtocol(('127.0.0.1', 0)) self.props = {'name': 'MyDoc', 'path': '/path/'} serialized_props = self.broker.serialize(self.props) self.msg = ('message', 1, 'root', 'convert', 1, ['tuple', serialized_props], ['dictionary']) def test_convert1(self): self.broker.currentDialect = 'pb' self.broker.setPrefixLimit(64) self.broker.transport = proto_helpers.StringTransport() io = cStringIO.StringIO() self.broker._encode(self.msg, io.write) self.broker.dataReceived(io.getvalue()) self.assertEqual(self.props, self.doc.props) def test_convert2(self): self.tr = proto_helpers.StringTransport() self.broker.makeConnection(self.tr) io = cStringIO.StringIO() self.broker._encode(self.msg, io.write) self.broker.dataReceived(io.getvalue()) self.assertEqual(self.props, self.doc.props) ---------- I wonder what causes this behavior and, in general, if `StringTransport` is suitable for testing PB protocol. Thanks in advance. For your convenience I attached files with these test cases. -- with regards, Maxim [View Less]

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[Twisted-Python] Is it a typo in abstract.py ?
by gelin yan Oct. 26, 2012

Oct. 26, 2012

Hi All I just noticed abstract.py from internet/iocpreactor/ has a possible typo: look at the method* *loseConnection * * if self.connected and not self.disconnecting: if self._writeDisconnected: # doWrite won't trigger the connection close anymore self.stopReading() self.stopWriting self.connectionLost(_connDone) else: self.stopReading() self.startWriting() … [View More]

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[Twisted-Python] Silly txoauth with Twisted Client Question
by Andrew Francis Oct. 25, 2012

Oct. 25, 2012

Hi Folks: I am implementing a client that uses Twisted. I have to use oauth 2.0. I have started to read up on Oauth and Twisted cred. I noticed that there is a txoauth. For now, my client is of the "it can't keep secrets" nature as described by Google. From my understanding Twisted Cred is used for implementing servers. What is used for clients? Or do I roll my own headers and implement the handshakes myself? Cheers, Andrew P.S - I just started using Agent and CookieAgent (as … [View More]

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[Twisted-Python] a possible solution for ticket 5562
by gelin yan Oct. 25, 2012

Oct. 25, 2012

Hi All A few months ago, I reported a bug about IOCP. Last night I spent several hours on its implementation and finally found out a possible solution for that. when sending some small chunks data continuously, the buffer will pile them up and send to IOCP; however there is a SEND_LIMIT (128K) that means only 128K will be handled. Now the problem is when we try to trigger the next writing, IOCP will raise ERROR_IO_PENDING immediately and then connection Lost. So I got a idea: if the … [View More]

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[Twisted-Python] Running twistd and tac files as Windows service
by John Aherne Oct. 24, 2012

Oct. 24, 2012

I have been looking at running some twisted programs as a windows service. So in the end I took a copy of twistd.py and adapted it to load my tac file and run it as a windows service. Of course the windows service will run it in a separate thread. I now have it running on XP, 2003 Server Twisted 10 and 12 and it all seemed fine. However when I install it on Windows 7 I get an error 2012-10-23 07:54:49+0100 [-] Unhandled Error Traceback (most recent call last): File "C:\Python27\lib\site-… [View More]

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[Twisted-Python] Running twisted test suite produces errors and hangs
by Maxim Lacrima Oct. 24, 2012

Oct. 24, 2012

Hi! I tried to run twisted test suite. And there are some errors: http://pastebin.com/em3NTN2B Also tests in "twisted.test.test_udp" took too much time to run (trial hanged for a couple of minutes on these tests). I wonder if this is something wrong with my Twisted installation. Thank you. -- with regards, Maxim

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[Twisted-Python] git repo maintenance
by Duncan McGreggor Oct. 22, 2012

Oct. 22, 2012

Hey all, At the sprint today, Glyph mentioned that the github repo hasn't been updated recently and needs someone to maintain it regularly. He also mentioned that pull requests would be accepted from github, at which point I immediately volunteered to keep the repo up to date :-) (I can't bear using svn anymore...) I'll be putting things in place (infrastructure, scripts, etc.) to assist me with this, so let me know if you have any concerns, questions, ideas, etc. Thanks, d

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Re: [Twisted-Python] Adding mock as a test suite dependency
by Julian Berman Oct. 22, 2012

Oct. 22, 2012

From: exarkun(a)twistedmatrix.com > Subject: Re: [Twisted-Python] Adding mock as a test suite dependency > > On 03:00 am, glyph(a)twistedmatrix.com wrote: > >Also I don't particularly like the testing style associated with Mock. > >I think it might discourage us yet further from writing verified fakes, > >i.e. supported in-memory implementations of things like IReactorTCP, > >that have somewhat intricate behavior that's tedious to emulate with > >Mock. &… [View More]gt; > I'm also not a huge fan of the *unverified* mock style of testing. I > don't think anything says that mocks *have* to be unverified, though it > seems they're often used that way. > > The mock library that got added to the stdlib has the notion of > constructing a mock using another object as a template. I haven't used > this feature, but it seems like the intent is to at least take a step > towards verification. It'd be nice if someone who knows more about the > features of this library could give some examples. > > In case anyone isn't clear, the problem with unverified fakes is that > they either start out incompatible with the objects they're fakes of, or > else they become incompatible with them over time. Once they're > incompatible, the tests that use them become significantly less useful, > since they demonstrate little or nothing about what will happen when you > try to use the code for real. > > Verified fakes solve this problem by adding assertions that objects and > their fakes have the necessary overlap in either interface or > functionality in order for the tests using them to be valid. > > Beyond that, considering the particular example presented, I wouldn't > actually use mocks to test this. The real object, the debugger, should > be perfectly usable in unit tests. It doesn't allocate or depend on > expensive resources, it doesn't do network I/O, etc. Mocks are perhaps > an attractive nuisance that distract from coming up with a better test. > > Well it seems I sidestepped behavior vs. state but fell into isolationist vs integration :). The reason I think even this was a reasonable example is because in the code that this will test, there is no dependence on an actual debugger whatsoever. What this test should be testing is that an object whose interface is irrelevant for the purpose of the test was handed off to another method in the case that that is expected. In short, the isolationist view as I understand and have come to appreciate says that mocks (in a broader sense here since these aren't true mocks I guess) aren't just for cases where the real object is expensive or annoying to create – they also remove irrelevant details from the body of the test. That being said though, I'm still looking (read: I have not yet looked but will do so when I get home) for actual examples in the test suite I can point to and say that real, actual mocks would have helped if that's what you'd be looking for. To go back to your first point about verification, mock has a bunch of things there of which if I'm truthful I only use some of them with any regularity. The thing that sounds like what you're referring to is likely the `spec` argument, which will do something like: >>> import mock >>> from twisted.trial.itrial import ITestCase >>> testCase = mock.Mock(spec=ITestCase.names()) >>> testCase.run <Mock name='mock.run' id='4319309392'> >>> testCase.jump Traceback (most recent call last): File "<input>", line 1, in <module> File "/usr/local/Cellar/python/2.7.3/lib/python2.7/site-packages/mock.py", line 647, in __getattr__ raise AttributeError("Mock object has no attribute %r" % name) AttributeError: Mock object has no attribute 'jump' As someone mentioned you also can hand it an implementor of ITestCase too but it will then pull off all attributes that that object has. There's plenty more granularity, but like anything else the design of the test requires common sense. If the test is meant to test how a specific method on the testCase mock is being used then assertions on how it was called generally seem most natural. As an alternate approach, I've learned (from a few places I think) that in cases where I want to verify that the places I've mocked are being used in a way that isn't going to differ from their actual use in the code, that a much wider scoped test that does integrate but doesn't need to be a unit test can be helpful, such that there are a whole bunch of isolated tests for each piece of logic and then one integrated test that actually does push the real object through such that anyone who does change the way that the two objects interacts still will have something telling them that the tests need updating as they would if all of the tests integrated. Jean-Paul > >Personally I'm -0. Don't let that stop you from cooking up a patch > >that would include it though, I might be in the minority here. > > > >-glyph > [View Less]

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[Twisted-Python] Adding mock as a test suite dependency
by Julian Berman Oct. 22, 2012

Oct. 22, 2012

Hi. I'd like to gauge any interest in (or resistance towards) adding mock (http://www.voidspace.org.uk/python/mock/mock.html) as a dependency for the test suite. In short, while I don't necessarily feel strongly about behavior vs. state based verification being preferred in a general sense, I think both have their place when used with sensibility. (Sorry, I know that's not saying too much of substance, but I'm trying to ward off a discussion on whether or not it has a place at all if possible)… [View More]. The *benefit* though for me in having mock present is that it decreases the lines of code necessary to write stubs and mocks. While doing so is not really that difficult anyhow, it *is* just a bit more clutter to do so without mock, and the extra 3 or 4 lines mean that in more than one instance I have found myself pick a different strategy than I would have because of the extra lines of code that clutter the test method. To give a specific example, as I write this I'm writing tests for #6143 (which will hopefully let trial drop into a debugger on an error or failure rather than at the outset of a test run). To do so I want to write tests that look like: def test_itDebugsOnError(self): result = mock.Mock() exc_type, exc_value, tb = mock.Mock(), mock.Mock(), mock.Mock() decorated = DebugDecorator(result) with mock.patch.object(decorated, "debug") as debug: decorated.addError(exc_type, exc_value, tb) debug.assert_called_once_with(tb) result.addError.assert_called_once_with(exc_type, exc_value, tb) where I want to test that the decorated test result is being used as I expect it to, and that debug is being called. Another test will test that debug does what it's supposed to, also in isolation. Of course none of the objects I used there were very interesting, but mock has similarly terse syntax for creating mocks with attributes, return values, etc. amongst a bunch of other useful features which I'll be happy to elaborate on if anyone would like, I just had the above example at hand. To add a few more notes: - mock is in the stdlib starting with 3.3 as unittest.mock, which as I understand it is the first version of Py3 for which support is planned. So really all that'd be needed would be to add mock as a dependency on 2.X. - it's a single file with no external deps, so installation is not difficult, and it'd only be a dep for running the tests (and presumably only a subset thereof that chose to use it) - there are other mocking libraries, but I don't like any of the others as much personally for various reasons. - I'd be willing to do the small amount of work to add it if there'd be interest :) Cheers, Julian [View Less]

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[Twisted-Python] Managing twisted application as init service.
by Maxim Lacrima Oct. 22, 2012

Oct. 22, 2012

Hi, I have been developing an application, which I would like to manage in a fashion similar to scripts placed in /etc/init.d. I.e. I want to start, stop, restart and monitor the application. Currently, I am trying to figure out a correct approach for this. Initially I thought to create a wrapper shell script like here [1] and just copy it into `/etc/init.d` directory. Then in that script I would make `twistd` start the application. However, today I discovered `twisted.runner` package, … [View More]

1 0

[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com Oct. 21, 2012

Oct. 21, 2012

1 0

[Twisted-Python] getpeername from verify callback
by Nathan Mower Oct. 19, 2012

Oct. 19, 2012

The following sample code worked until Twisted began to prefer memory BIOs over socket BIOs. Now it produces this error... exceptions.AttributeError: 'NoneType' object has no attribute 'getpeername' ...on line 9 where getpeername() is called by the verify() callback. Is there any way to obtain the peer name, given the OpenSSL.SSL.Connection object passed into verify()? Anything that surfaces the underlying socket? (Perhaps something similar to what is done in connectionMade(), which does … [View More]

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[Twisted-Python] how to daemonize twisted...and detatch from shell process
by Stephan Oct. 18, 2012

Oct. 18, 2012

Hi, I'm attempting to create an ubuntu service that when started will run in the background processing beanstalk jobs. I've taken the code from beanstalk-client twisted to act as my beanstalk client ( https://github.com/dustin/beanstalk-client-twisted/blob/master/beanstalk.py) The issue I'm having is how do I set up my service (ocapi.py) so that when the daemon (ocapi) starts it detaches from the process, which isn't' happening right now. ocapi.py (service) <--this is what should detach … [View More]

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