Mailman 3 April 2005 - Twisted

[Twisted-Python] mktap.py missing from Twisted 2.0 Windows installer
by Justin Johnson 18 Apr '05

18 Apr '05

I just installed Twisted 2.0 on Windows XP using the Python 2.3 installer at http://twisted.sourceforge.net/Twisted_NoDocs-2.0.0.win32(installer-rc3)-py…. After installing, mktap.py can't be found anywhere in any subdirectories of my Python install.

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RE: [Twisted-Python] Foreign event loop friendly reactor
by Henning.Ramm＠mediapro-gmbh.de 18 Apr '05

18 Apr '05

I really admire how you make a better, lighter world in a few hours from a "simple" request on the list! That's what I really love about mailing lists where the wizards are present - and as responsive as you guys. (Similar to my "home" list about ConTeXt...) Keep rockin' and blessed be! HR

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[Twisted-Python] Foreign event loop friendly reactor
by Bob Ippolito 18 Apr '05

18 Apr '05

In response to the "wxpython issues" thread I had suggested that we should have a thread-using reactor that integrates with foreign event loops, so I wrote one and committed it (twisted.internet.threadedselectreactor). Since this approach requires less maintenance, and whomever maintains the select reactor can trivially maintain this as well, I'm "officially" deprecating cfreactor (although I never really cared much to maintain it anyway). An example of using it to integrate with a foreign event loop is at: doc/core/examples/Cocoa/SimpleWebClient It should be relatively trivial to show how it could be used to integrate with other event loops (wx, Tkinter, pygame, etc.). Effectively, it's compatible with anything that has a thread-safe way to notify the main event loop. In the future, it might make sense to revise the reactor API to support "interleave" directly, and change the existing reactors accordingly so that more than just select can support this behavior. -bob

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[Twisted-Python] Experimental win32 installers. Twisted=2.0.0, installer=rc3
by Cory Dodt 17 Apr '05

17 Apr '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 New release of the experimental installers. These have the correct version strings for all projects, and z.i compiled. Check em out. Website will have updated links soonish. http://twisted.sourceforge.net/Twisted_NoDocs-2.0.0.win32%28installer-rc3%2… http://twisted.sourceforge.net/Twisted_NoDocs-2.0.0.win32%28installer-rc3%2… C -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCYqAk3A5SrXAiHQcRAu5PAJ4mGi6i+wIW5qCa9YhX8Ras0VktUgCfdMJC s9YTtGIjWY1b5NXisoJ+yKY= =q4Am -----END PGP SIGNATURE-----

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[Twisted-Python] policies.py change in 2.0
by Brian Kirsch 16 Apr '05

16 Apr '05

Hey guys, Question for you. In the 2.0 Twisted release the policies.ProtocolWrapper changed on line 31 to now set the wrappedProtocol.factory to point to the wrappingFactory. def __init__(self, factory, wrappedProtocol): self.wrappedProtocol = wrappedProtocol < self.factory = factory > self.factory = wrappedProtocol.factory = factory I was wondering what the reason for the change was? The change caused our current code to break (an easy fix). It seems to me that the wrapper should be transparent to the wrappedProtocol. Changing the protocol's factory leads to unexpected behavior if that protocol is depending on specific methods or data in the factory. In fact this change actually breaks the Twisted smtp.py code. def getMailFrom(self): if not self.done: self.done = 1 / return str(self.factory.fromEmail) #this will now break if wrapped/ else: return None Brian Kirsch - Email Framework Engineer Open Source Applications Foundation 543 Howard St. 5th Floor San Francisco, CA 94105 (415) 946-3056 http://www.osafoundation.org

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[Twisted-Python] wxpython issues
by Ivo van der Wijk 16 Apr '05

16 Apr '05

Hi, I know there are issues with wxPython (not exactly sure which though - is there anything documented about this?) Anyway, wxPython is, at this moment, still my prefered GUI Toolkit (and Wax even makes it rather pythonic) and Twisted is my prefered choice for networking, so I really need the support :) I'm currently having issues with wx 2.5.3 - the GUI is not drawn. I've found out that this issue is caused in wxreactor.py - the timer is scheduled every 1msec (which the new wx perhaps actually can handle!), simultate is being run for 10msec. and won't finish in time for the new event. Changing the interval in wxreactor.py to 50msec solves my problem. All of this is with twisted 1.3.0rc1 Cheers Ivo -- Drs. I.R. van der Wijk -=- Korte Leidsedwarsstraat 12 Amaze 1017 RC Amsterdam, NL -=- T +31-20-4688336 F +31-20-4688337 Zope/Plone/Content Management W http://www.amaze.nl E info(a)amaze.nl Open Source Solutions W http://vanderwijk.info E ivo(a)amaze.nl Consultancy PGP http://vanderwijk.info/pgp

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[Twisted-Python] Re: Raise soap faults
by Charles Moad 16 Apr '05

16 Apr '05

> Though on the client side it still won't raise an exception, but you will > hopefully get your faultType instance. You may check for it explicitly and > raise it, if you like. When a soap fault is returned the http return code is 500, so the client does actually see this and raise an exception. You do not have to explicitly check if it was a fault after ever call to the service.

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[Twisted-Python] Getting SSL context of protocol session
by Steve Smith 15 Apr '05

15 Apr '05

Hi, How do I retrieve the SSL context for a given protocol session object? For example, with the echo-server: # -------- class ServerContextFactory: def getContext(self): return SSL.Context(SSL.SSLv23_METHOD) class Echo(Protocol): def dataReceived(self, data): # I want to check the identity in the client certificate at # this point. Therefore I need the current SSL context. self.transport.write(data) factory = Factory() factory.protocol = Echo reactor.listenSSL(8000, factory, ServerContextFactory()) reactor.run() # -------- Currently there appears to be no way of linking the context and the protocol handler for the connection. Is there a way around this? Cheers, Steve

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[Twisted-Python] Question about deferreds and ClientCreator
by Ryan Thiessen 15 Apr '05

15 Apr '05

Hello, I'm just starting out with twisted, and it's a very impressive framework. I'm still learning the concepts though, and feel like I'm missing something important. I get the idea of deferred callbacks, but there are cases where I'd like to implement something directly and I cannot figure out how to accomplish this. I'm attempting to write an application based on the example found here: http://twistedmatrix.com/projects/words/documentation/examples/oscardemo.py The example I can understand perfectly, I can see how it creates the deferred callback and runs through the reactor, and I can tweak it to my heart's content. But that is targeted as a client but in a server-side operation like a bit. Instead, what happens if you are writing a program that requires user input? In the example, the program is run by the reactor and it depends on external input to cause the callbacks and generate activity. Grr.. it seems like I'm talking in circles, and I'm probably using the wrong terminology. What I'm trying to do is access the "sendMessage" function of the oscardemo.py from outside that class. I have functionality in a GTK2 window that is intended to send a message using oscar, but I cannot figure out how to take advantage of the protocol.ClientCreator to do that. If I assign a variable to protocol.ClientCreator it tells me it is a Deferred OscarAuthenticator, but I cannot make the mental leap to figure out how to manipulate that in order to send messages. It seems that I should be using callbacks since it is deferred, but I can't see how I'd do that to accomplish my goals. Is using ClientCreator the wrong step for me here, or does that provide the sort of functionality I am looking for? If I need to RTFM, can someone point me at the correct manual to read? I've read the HOWTOs on deferred and can only seem to get information about callbacks and I can't figure out how to use callbacks to provide user-supplied messages. Sorry for my lack of clarity, as I said I'm still quite new at this. -- Cheers, -Ryan Thiessen-

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[Twisted-Python] Fwd: [XML-SIG] Query re: Xml and Flash
by Anthony Tarlano 14 Apr '05

14 Apr '05

---------- Forwarded message ---------- From: Claire Mc Entee <claire_mcentee(a)hotmail.com> Date: Apr 12, 2005 7:12 PM Subject: [XML-SIG] Query re: Xml and Flash To: xml-sig(a)python.org Hello there, I am developing a site using XML and Flash and I was wondering if you had any ideas as to which book would be the best to buy? Kind regards, Claire Mc Entee _________________________________________________________________ Don't know what Meegos are? Click to find out. http://meegos.msn.ie _______________________________________________ XML-SIG maillist - XML-SIG(a)python.org http://mail.python.org/mailman/listinfo/xml-sig

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Twisted April 2005