Mailman 3 November 2006 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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Re: [Twisted-web] reloading nevow templates
by glyph＠divmod.com 29 Nov '06

29 Nov '06

On 01:46 pm, p.mayers(a)imperial.ac.uk wrote: >Do the nevow rend.Page and athena.LivePage co-operate with the t.p.u.reload >mechanism? No. >For various reasons I don't want to stop the process to reload the changes >I've made to disk and .py templates, but would like to be able to reload >them. Disk templates do not contain python code and therefore do not need to be integrated with t.p.u.rebuild. They already load automatically based on modification time. .py files are a much more intricate problem. >Thoughts? Rebuild is a nice idea, but a lot more work would need to be done to make it work reliably (or rather, fail gracefully and report sane errors when it *can't* work reliably). Getting this to work properly really has nothing to do with nevow, although nevow does exacerbate some problems with it. I'd recommend just manually restarting the server during development for now.

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reloading nevow templates
by Phil Mayers 29 Nov '06

29 Nov '06

All, Do the nevow rend.Page and athena.LivePage co-operate with the t.p.u.reload mechanism? For various reasons I don't want to stop the process to reload the changes I've made to disk and .py templates, but would like to be able to reload them. Thoughts?

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Why cannot find twisted.web packages?
by Steve Han 29 Nov '06

29 Nov '06

Hi all, I am new to twisted and just came this maillist,have not recieved any mails till now.This is as a test. My twisted2.0 came with SuSE10.0 installation box.The packages I had are not the same as those in the documentations of twisted online.

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Question about the Big picture
by Tony Sterrett 16 Nov '06

16 Nov '06

I just received a advertisement for a new book "TurboGears", a python web application server. There sure are a lot of these approach/communities focused on python. So what's the 40k foot view of the menagerie. (i understand this question is a bit abstract). Also do we have to start saying Turbo again, I was just getting use to "Extreme" and "On Steroids" as in ExtremeGears or Ruby on Steroids :-) Respectfully, Tony Sterrett Sterrett Software, LLC. Consultant for Open Source Software, Network and Kernel programming, featuring OpenBSD and Linux. www.sterrett.net (858) 433-1467 San Diego (408) 705-2135 San Jose

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Implementing hanging get with twisted web
by joe kim 12 Nov '06

12 Nov '06

Hi all, I had a question about implementing hanging-gets. A hanging get is basically when the server "hangs" onto the http request until either a certain period of time or until there is an event is triggered. It is a hack for implementing event driven messaging on top of HTTP. Alex Russell references it in his blog: http://alex.dojotoolkit.org/?p=545 What's the best way to implement hanging-gets using twisted? I have a web page that I want to immediately update everytime there is a change to the data. Making asynchronous javascript requests every second do not really make sense, but I was thinking that if the javascript continually made asynchronous requests to the server and the server implemented hanging-gets, then that would be a good solution. Any thoughts are appreciated. Cheers, Joe

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Namespace in 200 OK response from SOAP server?
by Ignacio Mas Ivars 09 Nov '06

09 Nov '06

Hi all, I am having a problem with a SOAP server, because the answer I am sending does not include the namespace that comes with the request. This is the full interaction of my server using a test python client: POST /SOAP HTTP/1.0 Host: 127.0.0.1 User-Agent: Twisted PageGetter Content-Length: 734 SOAPAction: get_media_URL content-type: text/xml connection: close <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/1999/XMLSchema"> <SOAP-ENV:Body> <ns1:get_media_URL xmlns:ns1="urn:ms" SOAP-ENC:root="1"> <v1 xsi:type="xsd:string">MyContent</ns1:get_media_URL> </SOAP-ENV:Body> </SOAP-ENV:Envelope> HTTP/1.0 200 OK Date: Wed, 08 Nov 2006 16:12:50 GMT Content-length: 550 Content-type: text/xml; charset="UTF-8" Server: TwistedWeb/2.4.0 <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/1999/XMLSchema"> <SOAP-ENV:Body> <get_media_URLResponse SOAP-ENC:root="1"> <Result xsi:type="xsd:string">Result</Result> </get_media_URLResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope> The problem is that the real SOAP client that sends the request is expecting an answer that contains the namespace as well, so that the answer should be: <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/1999/XMLSchema"> <SOAP-ENV:Body> <ns1:get_media_URLResponse xmlns:ns1="urn:ms" SOAP-ENC:root="1"> <Result xsi:type="xsd:string">Result</Result> </ns1:get_media_URLResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope> The code of my server is as simple as: def getQuote(): return "Result" class SOAPListener(soap.SOAPPublisher): def __init__(self): print "SM controller started" def soap_get_media_URL(self, message): print "Got: ", message return getQuote() def main(): from twisted.internet import reactor root = resource.Resource() root.putChild('SOAP', SOAPListener()) reactor.listenTCP(8080, server.Site(root)) reactor.run() if __name__ == '__main__': main() Now, how can I force the server to answer back with the proper namespace? The client refuses to understand the message back otherwise... Any help will be greatly appreciated! Thanks, /Nacho --- ,,, (o o) --ooO--(_)---Ooo----------- Why get your news from seasoned professionals when you can get half-witted rumors from random strangers [on the Internet]?-Joel Achenbach --oo0--------0oo-----------

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Re: [Twisted-web] How to insert an Athena event handler using Stan?
by glyph＠divmod.com 01 Nov '06

01 Nov '06

On 07:56 pm, exarkun(a)divmod.com wrote: >On Tue, 31 Oct 2006 11:57:05 -0500, Phil Christensen <phil(a)bubblehouse.org> >wrote: >> T.div(render=T.directive('liveElement'))[ >> T.input(type='text', size=80)[athena.handler(event='onkeypress', >>handler='parse')]]) >> ] >> >>fails without generating any error. I guess I'm okay with the first >>version for my particular use-case, but I'd be interested to know if >>there's something obvious I'm missing, or other information I can supply. > >How does it fail? Can you throw together a minimal self-contained example? >I use this in a lot of places and it works and as far as I understand there >is no reason it shouldn't. Not only does it work, but we are trying to move towards that being the suggested style, as it generally has superior error-handling characteristics. It would be really nice to get issues with it fixed, and even if this isn't a real problem, document it as a possible "gotcha" so people do not feel uneasy about taking this approach. So.. got a unit test? :)

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How to insert an Athena event handler using Stan?
by kgi 01 Nov '06

01 Nov '06

Hi all. I've got some LiveElements in an Athena page to which I want to attach event handlers. Their XHTML is stan-based. What I've got right now (which works) is something like this, which I've understood is the Right Way to do it if you're explicitly using inline Javascript: _js = ( "Nevow.Athena.Widget.get(this).keyPressed(this, event); " + "return false;" ) docFactory = loaders.stan ( T.div ( render = T.directive ( 'liveElement' ), ) [ "Blah Text Label", T.input ( type = "text", _class = "sw-input", onkeyup = _js, ), T.div ( _class = "sw-output" ) [ "Blah More Text" ], ] ) There are messages in the mailing list (for example, from JP on October 11th 2006) recommending that one should use the athena:handler feature, like this: <textarea> <athena:handler event="onkeypress" handler="keyPressed" /> </textarea> However, if one has stan-based rather than file-based XHTML, it's neither documented nor obvious how this should be done. I've managed to get this far: from nevow import stan ... _athena = stan.Proto ( 'athena:handler event="onkeypress" handler="keyPressed"' ) ... T.input ( type = "text", _class = "sw-input" ) [ _athena ] This serialises OK, but it doesn't work, because the node doesn't get rewritten; that is, the generated XHTML contains the athena:handler node verbatim. Now, rewriteEventHandlerNodes() in Nevow/nevow/athena.py (around line 962) seems to traverse the tree looking for athena:handler nodes and replacing them with "Nevow.Athena.Widget.handleEvent()" Javascript, so I presume that the node I'm creating fails to get identified as an athena:handler node because I'm creating it incorrectly. What is the correct way to create such a node such that it gets picked up by rewriteEventHandlerNodes()? Regards, Ricky

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