Mailman 3 July 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. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ 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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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, 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 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 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] 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 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] 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 check patches or other things. Please let me know if you have any good advise or idea to this project. My name on IRC is zomux. ( This project is currently hosted on launchpad, http://launchpad.net/twistedchecker ) Thanks. Best Regards, -- *Raphael Shu , UACA 2012*

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[Twisted-Python] AMPBox as an Argument?
by Laurens Van Houtven Aug. 6, 2012

Aug. 6, 2012

Hi, Apparently AMPBoxes aren't Arguments. However, I kind of want an AMPBox (like an AMPList, but only one). Use case: my responses have a "location", but a location is composed of several sub-things: place name, country and postal code. {"location": {"placeName": "Krakow", "countryCode": "PL", postalCode: "30-015"}} would be a lot nicer than having those keys in the top level namespace :) cheers lvh

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Re: [Twisted-Python] Password hash for Perspective Brokers
by Flint Aug. 2, 2012

Aug. 2, 2012

Hi, i've faced the same problem and submitted a patch a few month ago, your can check it here http://twistedmatrix.com/trac/ticket/4398 you'll find also a complet example attached. My first problem was that, the way twisted pb authentication works we're supposed to have a plan version of passwords at server side. Or this is not always the case, most application store a hashed version of the password, the hash method may be different from the one twisted pb use to pass the credential over the network and thus, we're not able to compare those values. In my solution the user can define a custom hash method and tell twisted to use it, so that the password given by twisted over the network will be hashed the same way that the application does before storing it (in database for example), which means we can check if the password is correct without having a plain version of it. Not that, If we don't "customize" the hash method, the original twisted behaviour in used instead, and thus compatibility is preserved. -- G Message: 1 > Date: Thu, 26 Jul 2012 12:36:57 -0500 > From: Kevin Horn <kevin.horn(a)gmail.com> > Subject: Re: [Twisted-Python] Password hash for Perspective Brokers > To: Twisted general discussion <twisted-python(a)twistedmatrix.com> > Message-ID: > <CA+U= > zK3W21_BAg9fbLZzsAmRJXReHsvGmRYb0JLT4sgVV78R7A(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > On Thu, Jul 26, 2012 at 11:43 AM, <exarkun(a)twistedmatrix.com> wrote: > > > On 02:28 pm, spalax(a)gresille.org wrote: > > > Hello > > > I have a problem with checkers in Twisted, which could be > > >solved by > > >adding a new feature. I think I can write the necessary code, but > > >before > > >doing so, I would like to hear you about it. > > > > > ># The problem > > > > > > If I am right, the only way passwords can be hashed when using > > >authentication with perspective brokers is using MD5 [1]. However, > > >there > > >are two flaws with it. > > > > > >* First, MD5 is no longer considered sure. It may be possible, from the > > >hashed password, to find the original one. > > >* Second, in the current implementation of Twisted, no salt is used to > > >hash the password. A salt is considered good practise : it is harder to > > >find the password from the hashed form, and two identical passwords > > >have > > >different hashed form, which prevent someone looking at the hashed > > >passwords to see if two users have the same password. > > > > The second point is incorrect. The hash is salted. See the `respond` > > method in twisted/spread/pb.py. > > ># A solution > > > > > > I tried to implement the solution proposed in [1], and I think > > >I can > > >manage to do it. However, this seems to be a not-so-smart hack, which > > >is > > >not guaranteed to work in future releases of Twisted. That is why I am > > >proposing a patch. > > > > > > The patch would introduce some arguments to class > > >PBServerFactory [2] > > >to use (or not) a salt, and a different hash function. I am not settled > > >down yet about the new signature of this class, but what is sure is > > >that > > >the default must be the actual behaviour, not to break programs already > > >using Twisted. Then, I hesitate between > > > > A good approach would be to parameterize the supported authentication > > mechanisms in an extensible way, rather than just hard coding one or two > > new (probably better) options. > > > > In other words, a SASL implementation for PB would be the best way to > > go. > > > > The existing API and behavior should indeed be preserved as-is for > > backwards compatibility. The new authentication features should be > > exposed under a new API - either as new optional arguments accepted by > > PBServerFactory (and perhaps PBClientFactory) and new login methods > > (again, probably on those two classes). > > > > Jean-Paul > > > > > It would probably also help if someone finished the "Generic SASL > implementation" ticket. > > Lessee, who was working on that last? > > Crap. It was me. > > Sorry about that. > > Kevin Horn >

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[Twisted-Python] [RFC] Introducing six as a dependency
by Vladimir Perić July 31, 2012

July 31, 2012

Hello all, as part of my work on porting Twisted to Python 3, I have considered using the six library[1] to help with some issues. six is basically a compatibility library - same idea as our twisted.python.compat module. Now, one approach is to add six as a dependency of Twisted - it is a very small library so hardly a problem; on the other hand, it is an additional dependency. The other approach would be to copy the required code over to the t.p.compat module (six' license[2] is basically "do what you want with this code"), but this is additional work and we might miss out on the eventual bugfix (though there has only been a couple since the project started). In general, I have heard good things about six. As a note, currently, I would need at least the reraise and exec_ functions from six; additionally, a lot of the things from the six.moves package are useful. And, of course, there might be other compatibility functions which I'd need, I just haven't encountered yet (I do only use these if absolutely required, though). What do you all think? In the end, it boils down to "additional dependency" vs. "less code to maintain". Personally, I could go either way - using six makes things slightly easier, but I could just copy over the code we need and be done with it. [1] http://packages.python.org/six/ [2] https://bitbucket.org/gutworth/six/src/d81f633c45dd/LICENSE -- Vladimir Perić

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