Mailman 3 August 2006 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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simple proxy example?
by Wendell Turner 05 Sep '06

05 Sep '06

The webdownload.py script in Abe Fettig's book works fine for directly connected machines. I would like to modify it to use a proxy. Most of the examples in the twisted docs seem to show how to write a proxy, not how to use one. To modify that example to use a proxy, do I need to use a ProxyClientFactory instead of the HTTPDownloader? I tried that, but it needs 7 arguments, and I could not tell what they should be. Or do I just set the factory.protocol to proxy.Proxy? If so, where do I tell it the proxy's address & port? Is there a (simple(!)) twisted web page retrieval script that uses (i.e. runs behind) a proxy server that I could use to start with? Thanks, Wendell

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[Release] Bic A1A1
by Adrian Perez 01 Sep '06

01 Sep '06

Hello! As I mentioned earlier, I'm writing a weblog system using Nevow, and now I'm proud of announcing the availability of the first «official» alpha release, version A1A1. You can grab it here: - TGZ: http://code.connectical.net/nn-releases/bic/bic-A1A1.tar.gz - Combined TGZ, recommended (Bic A1A1, Pyramid A0A15, Formal 255-svn): http://code.connectical.net/nn-releases/pyramid+bic+formal-20060824.tar.gz (If you don't have Pyramid and/or Formal, and don't want to have extrawork downloading and installing them, I recommend using the second package.) As I stated in my previous message, any comments regarding the thing will be appreciated. I know there are some bugs, and that a lot of features are still missing but... it's alpha! :-P. Even so, I'm very happy with the result. Once installed somewhere in your $PYTHONPATH, make it work as follows: $ mkdir /tmp/bic $ cp bic.{tac,conf} /tmp/bic $ cd /tmp/bic && twistd -noy bic.tac Then point a web browser to http://localhost:3979 (administration at http://localhost:3979/login). By default, username and password are both «admin» (without the quotes). You can tune authentication by editing «bic.conf»: $ echo 'auth_plugin = passwd' >> bic.conf $ echo 'auth_params = filename:bic.passwd' >> bic.conf $ echo 'iamcool:mypassiscool' >> bic.passwd $ echo 'sheiscool:herpassiscool' >> bic.passwd Here you have a screenshot with someone logged in, with the default theme and english localization: http://img391.imageshack.us/img391/5949/bicadminencl9.jpg Finally, I would like to thank the one who pointed about using formal instead of formless, because I found formal to be somewhat nicer than the other one ;-) Also, the recent thread regarding nevow.guard was useful because it helped me understand how does it work, so I was able of using nevow.guard to add authentication. Cheers, P.S: If this list is not suitable for announcements like this, just let me know, I don't want to be unpolite ;-) -- Adrian Perez "Experience is what you get when you don't get what you want" -- (Dan Stanford)

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Re: [Twisted-web] t.i.e.ConnectionDone: Connection was closed cleanly error, using getPage
by Dimi Shahbaz 25 Aug '06

25 Aug '06

On Aug 23, 2006, at 6:49 PM, Jean-Paul Calderone wrote: > 1.1 vs 1.0 probably makes the difference. Connection closed is > probably being used to signal the end of the response. If getPage > is not recognizing this as successful completion, it may be a > getPage bug. Can you attach both traffic captures to a ticket in > the tracker? http://twistedmatrix.com/trac/newticket (you'll need > an account first). > > Jean-Paul For posterity: here is the ticket, which contains the work-around I came up with: http://twistedmatrix.com/trac/ticket/2017 thank you -- Dimi Shahbaz, Software Engineer Specialist California PASS Program www.cyberhigh.fcoe.k12.ca.us

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t.i.e.ConnectionDone: Connection was closed cleanly error, using getPage
by Dimi Shahbaz 24 Aug '06

24 Aug '06

List, Using t.web.client.getPage, I am continually seeing a "t.i.e.ConnectionDone: Connection was closed cleanly error" exception. The same URL loads fine in Firefox. I have examined the request headers that FF was sending, and even tried emulating exactly** all those headers in getPage(..., headers=...), but that was no help. My timeout is set very high as well, so it's not that. However, in ethereal, the response headers from the server, and in fact the content the server was sending back, was identical between the FF request and the getPage() request. The data looks as though it's being received, but I still get that exception, and getPage's success callback is never called. Any insights before I dive into HTTPClientFactory? ** the only difference I saw between the two requests was that FF's was HTTP 1.1, while getPage's was 1.0. -- Dimi Shahbaz, Software Engineer Specialist California PASS Program www.cyberhigh.fcoe.k12.ca.us

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web2: handling data from an http PUT request?
by Allan Bailey 11 Aug '06

11 Aug '06

Does anyone have an example of how to handle data from an http PUT method? So far I'm only getting partial data from the below example. Note: I'm fairly new to twisted and using deferred's. So if I'm missing something please let me know, or send pointers. thanks, -allan ================ ## class HOME(resource.Resource): addSlash = True def allowedMethods(self): return ('GET', 'HEAD', 'OPTIONS', 'PUT') def locateChild(self, req, segments): return (self, server.StopTraversal) def render_PUT(self, req): content = "<html><body>\n" content += "<hr>\n" content += "method: %s \n" % req.method content += "uri: %s \n" % req.uri content += "path: %s \n" % req.path content += "dir(req): %s \n" % dir(req) content += "<hr>\n" content += "args: %s \n" % req.args content += "<hr>data from PUT:\n\n<hr>\n\n%s\n\n<hr>\n" content +="</body></html>\n" print req.stream print dir(req.stream) data = req.stream.read() if type(data) == type(""): # this never happens, seems to always be a deferred. dunno why. content = content % data return http.Response(responsecode.OK, stream=content) elif isinstance(data, defer.Deferred): def _pull(result, send=content): # result should be a string of data. send = send % result return http.Response(responsecode.OK, stream=send) d = data.addCallback(_pull, content) return d else: raise 'FixMe' #return None # def http_PUT(self, req): return self.render_PUT(req) -- Allan

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Apple using Twisted in OS 10.5 Leopard Server
by Peter Herndon 09 Aug '06

09 Aug '06

Hi all, Apple has open sourced their iCal Server, and it is written in Python using Twisted and web2. http://trac.macosforge.org/projects/collaboration/browser/ has the overall stuff in it, and the server itself is at http://trac.macosforge.org/projects/collaboration/browser/ CalendarServer/trunk/ Neat stuff! Peter Herndon tpherndon(a)gmail.com

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[Nevow] custom renderers for exceptions
by Manlio Perillo 07 Aug '06

07 Aug '06

Hi. I have written this code to write custom "resource handlers" for exceptions. Using adapters directly avoids the use of the context. class DefaultExceptionHandler(object): # TODO catch all error handling implements(inevow.ICanHandleException) def renderHTTP_exception(self, ctx, reason): def cb(html): request.write(html) request.finishRequest(False) log.err(reason) request = inevow.IRequest(ctx) error = reason.value # make error available to the adapter request.error = error rend = inevow.IResource(error) rend.renderHTTP(ctx).addCallback(cb) # replace the default one appserver.DefaultExceptionHandler = DefaultExceptionHandler class ExceptionResource(Adapter, rend.Page): docFactory = loaders.stan( t.html[ t.head[ t.title["Oops"] ], t.body[ t.p(render=t.directive("string")) ] ] ) class ZeroDivisionResource(Adapter, rend.Page): implements(inevow.IRenderer) docFactory = loaders.stan( t.html[ t.head[ t.title["Oops"] ], t.body[ t.p[ t.xml("∞") ] ] ] ) registerAdapter(ExceptionResource, Exception, inevow.IResource) registerAdapter(ZeroDivisionResource, ZeroDivisionError, inevow.IResource) Example: class OopsPage(rend.Page): def exception(self, ctx, data): 1/0 # cause an exception on purpose docFactory = loaders.stan(exception) Regards Manlio Perillo

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[Nevow] new chapter about authentication
by Manlio Perillo 07 Aug '06

07 Aug '06

Hi. I have written a new chapter for authentication. It is still a draft (as always), and don't forget that I'm not an expert. http://svn.python.it/twisted/trunk/contrib/nevow/doc/txt/nevow-authenticati… P.S. Is it possible to link external source files in hier, like in lore? Regards Manlio Perillo

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URL.fromRequest
by Manlio Perillo 07 Aug '06

07 Aug '06

exceptions.DeprecationWarning: [v0.4] URL.fromRequest will change behaviour soon. Use fromContext instead I think that there is something wrong with this. What means "will change behavior"? If the context is going away, why I have to use fromContext? Thanks and regards Manlio Perillo

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