Mailman 3 April 2004 - Twisted-web

LiveEvil for Internet Explorer?
by Kurisaki, Lance April 22, 2004

April 22, 2004

Hi, Has anyone gotten LiveEvil to work with Internet Explorer? Any plans for it in the future? Thanks... Lance Kurisaki

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RE: [Twisted-web] Twisted & PythonWin IDE
by Harald.Nyman＠astrazeneca.com April 21, 2004

April 21, 2004

Hi Adam, At least the vsn of pythonwin I have shows a little snake at the bottom right of the taskbar when it's running - right-clicking it offers "Break into running code", and then it stops. A relief, when you're used to the tiring Task Mgr exercise - had to do that all the time with IDLE. Cheers from a fellow newb, Harald -----Original Message----- From: Adam [mailto:scovel@jvlnet.com] Sent: Wednesday, April 21, 2004 4:28 AM To: twisted-web(a)twistedmatrix.com Subject: [Twisted-web] Twisted & PythonWin IDE Hi all, A quick (and probably stupid) question from a newb. I'd like to find a better way to quickly debug twisted scripts under pythonwin. I've no problem running stand-alone scripts from the command line, but under pythonwin they lock up, and after testing I'm forced to terminate it from the task manager, reopen pythonwin, etc... If someone could point me in the right direction I'd be greatly appreciative. Thanks, Adam _______________________________________________ Twisted-web mailing list Twisted-web(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web

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Exceptions on production systems
by Rilee, Robert April 21, 2004

April 21, 2004

The web.Server Traceback is somewhat hideous. What do folks do on production systems where you don't want to amplify your mistakes to the world? Robert Rilee JIL Information Systems, Inc.

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Using Twisted.web - should I wait?
by Richard Livsey April 20, 2004

April 20, 2004

As mentioned in a previous thread, I'm looking at using twisted.web in a project. However, all the talk at the moment of a twsited.web rewrite and the splitting up of twisted into seperate projects makes me think I should hold off for a bit. Basically the question is, should I bother starting the project now if in a few days/weeks/months time the whole framework is going to change and I end up having to refactor half of the project to fit in? I'm using twisted a fair bit in another project I'm working on (multi-group chat system, like live-person) but am hesitant on starting a new one based around .web/nevow etc.. Any advice? Thanks. -- R.Livsey Incutio Web Developer www.livsey.org www.incutio.com

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Nevow/twisted.web code contribution
by Ed Suominen April 20, 2004

April 20, 2004

Here is a link to a tarball containing a text button generator module for use with nevow/twisted. The tarball contains button.py, a .ttf font file, an example file, test modules, and a copy of the LGPL. http://etcl.org/nevow.button.tgz I hope you will find this contribution worthy of inclusion in nevow-0.2 or twisted-web, whichever makes more sense. (Since nevow deals with content generation, I figured that would be the logical choice, but I could be wrong.) Please note that I'll give this code to either project under whatever OSI-approved license you choose to use for the whole project. Just let me know what you're using and change the header text accordingly. I would like my name and URL left in the header text, however. Best regards, Ed

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Naming the split.
by David Reid April 20, 2004

April 20, 2004

These are some of the names that were thrown around the other day during a discussion #twisted.web about naming the split. Some are dependent on it being installed under the twisted namespace... since radix has said that is a no go, I'm going to omit the "twisted." and see how they stand on their own. unwound stem qem newvo labryinth charlotte weevil ferret eighty spider lattice matrix trellis kudzu arachnid assassin wev weever vewon world waffle Yeah ok and there were a lot more completely stupid names thrown around. If my opinion matters any I like: unwound, charlotte, and eighty. --David

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Apache and Twisted
by Richard Livsey April 20, 2004

April 20, 2004

Hope this hasn't been discussed recently - I googled and searched the archives but I'm tired so I will blame that... Is there any documentation/advice on how to run Twisted apps behind/alongside Apache? My situation is as follows: All our servers run Apache on port 80, I have root access etc so that's no problem. A new project I'm looking at starting soon will hopefully be based around Twisted/Nevow and I want to run it on our servers. How do I configure Apache so that it passes everything (or certain things, could have apache still server static html/images/js/css etc..) onto the twisted app which I assume will be listening on a port other than 80. Any other advice on ways to set this up before I start messing about and breaking our dev box tomorrow? :o) Thanks in advance. -- R.Livsey Incutio Web Developer www.livsey.org www.incutio.com

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how do i write to the new svn repository to commit a bugfix...?
by Alex Martelli April 20, 2004

April 20, 2004

I think I had write access back when nevow was under CVS, but I don't know what I should do to get it back now it's under nevow instead. Anyway, there's a tiny bug in rend.py I just fixed and I can't commit the fix...: $ svn diff rend.py Index: rend.py =================================================================== --- rend.py (revision 179) +++ rend.py (working copy) @@ -91,7 +91,7 @@ def child(self, context, name): callable = getattr(self, 'data_%s' % name, None) if callable is None: - container = IContainer(self.original, None) + container = inevow.IContainer(self.original, None) if container is None: callable = lambda context, data: context.tag["The data named '%s' was not found in %r." % (name, self)] else: I'd appreciate [a] if someone could commit this, [b] if someone could explain to me (assuming I _am_ supposed to still have write access) how I do the equivalent of a "svn login" given that said command isn't there;-). Thanks, Alex

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Splitting twisted-web from core twisted.
by David Reid April 20, 2004

April 20, 2004

Goals of a split: * Simplify the twisted.web, don't make it do anything clever. The clever stuff should be left up to nevow and perhaps kept a seperate module. Also given fzZzy's history it seems very likely that eventually he will come up with something even better than Nevow, and it would just be a waste to have to rewrite twisted.web (again) to support it. ;) * Implement things like distrib and vhosts at a lower level. Currently distrib and vhosts need to be reimplemented or atleast violently shoehorned into working with Nevow. This will likely be the same with any future alternatives to Nevow. I'll get into specifics about distrib and vhosts later. * Use new APIs. This is as good a chance as any to get rid of all those DeprecationWarnings we get when starting a twisted.web server. Concerns of a split: * Failing. I don't want to fork the code, I want to officially split twisted.web from core twisted and refactor it to support the above goals. I need to know this is what people want to happen, and I need input to make sure it's done Reasonably Right (TM) Not Concerns of a split: * Backwards compatibility. I'm ok with breaking old applications built on twisted.web. I hope by simplifying the core we can expand the possibilities for later development. I've changed my mind about turning Nevow into twisted.web2. I think that would just cause more problems down the line. I want to make twisted.web the simplest webserver it can be without sucking. Distrib and Vhost Specifics: Currently distrib really gets caught up handling some of the complex objects that are used in the nevow.appserver.NevowRequest object. It first throws an InsecureJelly exception when it hits a nevow.context.WovenContext. If you shoehorn that by making it a pb.Copyable with a None returning getStateForCopy method it immediately throws an exception for nevow.appserver.OldResourceAdapter. When you shoehorn that through with the above method it throws an InsecureJelly exception when it hits twisted.internet.defer.Deferred. Obviously you can see why i wouldn't want to pursue that methodology futher. It seems silly to have to do that just so stuff won't go over ther wire, I'm sure there is a simpler way but no one bothered to point it out to me when i was asking about it. And NevowRequest seems like an ideal example of an object to complicated to bother with passing it through pb. Passing http.Request would be so much simpler and it would get us a little bit closer to realize this comment from twisted/web/distrib.py: """ This is going to have to be refactored so that argument parsing is done by each subprocess and not by the main web server (i.e. GET, POST etc.). """ As I'm sure you've probably realized, I'm "That Guy Who Made Vhosts work in Nevow". Yes that is me. And VHost wasn't such a big problem, but it got me thinking about how to do distrib and that led me to realize that perhaps they should not be implemented at what we currently think of as the Resource level, but instead at the Site level or even before that. Both technologies need a minimal ammount of information to process the request. So it seems silly to have them handle server.Request and especially NevowRequest. I guess I've sort of gone off on a rant there, and really wanted to avoid that. So I'll leave that as my opinion, and let you fine programmers comment. The End. These are just my first impressions about how a split should take place, I will admit to not being up on the core twisted.web code and certainly not on the core twisted. But i'm willing to put in the effort to learn it and take care of this if no one else is. Right now i make $6.75US/hr and go to school 2 days a week, i have probably as much free time as anyone else and I really really want this stuff to work. -- David Reid

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SOAP issue
by Thomas Mangin April 19, 2004

April 19, 2004

Hello, I would appreciate if someone could tell me what I did wrong. Tested with twisted 1.2.0 - installed from tar.gz on a Mandrake 9.2 with the latest version of SOAPpy using the python 2.3 Mandrake RPMS. Thank you Thomas ---- #!/usr/bin/python from twisted.web.soap import Proxy from twisted.internet import reactor def printValue(value): print repr(value) reactor.stop() def printError(error): print 'error', error reactor.stop() proxy = Proxy('http://192.0.2.1:7080/SOAP') proxy.callRemote('quote').addCallbacks(printValue, printError) reactor.run() $ cat server.py #!/usr/bin/python from twisted.web import soap from twisted.web import server from twisted.internet import reactor class Example(soap.SOAPPublisher): def soap_quote(self): return "Boring string ....." r = Example() reactor.listenTCP(7080, server.Site(r)) reactor.run() $ ./client.py error [Failure instance: Traceback: twisted.web.error.Error, 500 Internal Server Error ] $ ./server.py Traceback (most recent call last): File "/usr/lib/python2.3/site-packages/twisted/protocols/basic.py", line 229, in dataReceived return self.rawDataReceived(data) File "/usr/lib/python2.3/site-packages/twisted/protocols/http.py", line 1002, in rawDataReceived self.allContentReceived() File "/usr/lib/python2.3/site-packages/twisted/protocols/http.py", line 993, in allContentReceived req.requestReceived(command, path, version) File "/usr/lib/python2.3/site-packages/twisted/protocols/http.py", line 554, in requestReceived self.process() --- <exception caught here> --- File "/usr/lib/python2.3/site-packages/twisted/web/server.py", line 159, in process self.render(resrc) File "/usr/lib/python2.3/site-packages/twisted/web/server.py", line 166, in render body = resrc.render(self) File "/usr/lib/python2.3/site-packages/twisted/web/soap.py", line 87, in render d = defer.maybeDeferred(function, *args) exceptions.TypeError: maybeDeferred() argument after * must be a sequence

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