Mailman 3 May 2006 - Twisted-web

Test
by Philippe Lafoucrière Aug. 5, 2021

Aug. 5, 2021

Hi all just a test

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Import channel Problem
by George Wright June 1, 2006

June 1, 2006

Hi I'm new to this list. Doing example1.py in first tutorial of twisted.web2 (documentation/ intro.txt) I keep getting: ImportError: cannot import name channel Anyone know what's wrong here? George Wright http://users.bigpond.net.au/George.Wright/ http://www.labyrinth.net.au/~gwright

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nevow documentation
by Manlio Perillo May 31, 2006

May 31, 2006

Hi. The base documentation for Nevow is very well written (it is very unfortunate that Donovan Preston no longer maintain Nevow). Is this documentation up to date with the current versione of twisted? What are the most important missing features? As I can see: - more detailed documentation of IRequest. As an example 200, 404 and 500 return code are automatically generated by Nevow (when rendering a resource, when returning None by locateChildren and bu raising an exception in a renderer, ***what else?*** - documentation of interfaces like IContainer, ISession and IRenderer, ICanHandleException, IHand?, ... - more detailed documentation about context (remember, ...) - documentation for macro - documentation for fragments - documentation for guard - some interfaces are not documented at all (as ISettable, IStatusMessage, ...) All this stuff is explained in the examples but it can help a lot to have them organized in a better way. Thanks Manlio Perillo

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inevow and ISession
by Manlio Perillo May 31, 2006

May 31, 2006

Hi. Why there are two ISession classes in inevow.py? Thanks Manlio Perillo

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nevow guard and logout
by Remi Cool May 31, 2006

May 31, 2006

Hello, I've implemented the nevow guarded and logout_guard examples in my own code, but ran into a problem. I start firefox and load the url http://localhost:8000/login, I get the expected login page. After login I can reach resources like http://localhost:8000/login/test/test.html (before login I got a 'Sorry, but I couldn't find the object you requested.' page) When I return to the login page and click on logout, I get the login page again but can still reach the test/test.html page. After a restart of firefox, I need to log in before I get access to /test/test.html. Three questions: - how can I prevent access to guarded resources after logout? - is it possible to always show the login page when a guarded resource is requested and the user is not logged in? - is it possible to use components.registerAdapter to register the sessionWrapper as root resource? Thanks. - Remi -

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[Nevow] addSlash
by Manlio Perillo May 30, 2006

May 30, 2006

Hi. I'm having problems with addSlash. I have this simple Page: class SimpleRoot(rend.Page): docFactory = loaders.stan(tags.html[ tags.body[ tags.h1["Hello!"] ] ]) def child_1(self, ctx): return self But when I visit: http://localhost:8080/1 I'm redirected to /1/ why? Thanks Manlio Perillo

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Run nevow site and xmlrpc server on the same port
by Remi Cool May 26, 2006

May 26, 2006

Is it possible to run a nevow site and xmlrpc server on the same port? If so ... how I currently have the following code: class nevowResource(rend.Page): addSlash = True def __init__(self, service): rend.Page.__init__(self) self.service = service self.putChild('RPC2', protocols.xmlrpc(self.service)) rt = static.File("../frontend/nevow") rt.ignoreExt(".rpy") rt.processors = {'.rpy': script.ResourceScript} rt.indexNames.append('index.rpy') self.putChild('nevow', rt) self.putChild('php', proxy.ReverseProxyResource('localhost', 80, '/oldcode/')) def locateChild(self, ctx, segments): """""" if segments[0] == '': # If the server is looking for the root page segments will be ('',) # then renderHTTP will be called on self return self.renderHTTP(self), () elif segments[0] in ctx.tag.children.keys(): return ctx.tag.children[segments[0]], segments[1:] else: return None, () def renderHTTP(self, ctx): """""" print 'render HTTP CTX:', dir(ctx) if self == ctx: return ctx.render_string() return ctx.tag application = service.Application('APP', uid=1000, gid=1000) s = myService() serviceCollection = service.IServiceCollection(application) internet.TCPServer(8001, appserver.NevowSite(s)).setServiceParent(serviceCollection) With this solution, XMLRPC seems not to be working ... and on every page request, the xmlrpc code is imported. My service needs to be available/accessable from both the nevow site and the XMLPC server. What is the best way to implement this? - Remi -

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Twisted to proxy php out to apache?
by Remi C Cool May 25, 2006

May 25, 2006

Hello fellow twisters, David Reid suggested that I should ask the twisted.web list for answers ... so here it is. We have a rather large web app based on xul, xmlrpc (via twisted) and php (via apache) .... and we would like to get it all (in due time) in python. As a first step it would be perfect to let twisted handle php page requests so that we can use nevow for the upcomming modules and convert old modules when we have the time to spare. Some time ago, I tried to get PHP to run as a CGI from twisted ... that was so slow that I got timing problems and a non operatable webapp. BTW ... nothing new on the FCGI for PHP front yet? My question ... is it possible to pass php page requests from twisted to apache so I don't suffer the speed loss but still have my app listening on only one port (for http and xmlrpc) ? So can twisted be a proxy for php or is this not the recommended way to go? I know about the reverseproxy stuff .. but if I understand that correctly, it's about passing requests to twisted from apache or other server. I would like it to be the other way round .. twisted passes requests for PHP to apache, receives the processed content and passes that back to the client. (if that method doesn't have any significant drawbacks) - Remi -

4 5

HTTPS server performance
by Mircea Amarascu May 24, 2006

May 24, 2006

I need a basic HTTPS server, without any web applications support, so I've decided to use the listenTCP and listenSSL methods, together with a twisted.web.http.HTTPFactory, a twisted.web.http.HTTPChannel protocol and a twisted.web.http.Request handler. I added a ServerContextFactory for SSL (like in echoserv_ssl.py example): class ServerContextFactory: def getContext(self): """Create an SSL context. Similar to twisted's echoserv_ssl example, except the private key and certificate are in separate files.""" print "Creating SSL context..." ctx = SSL.Context(SSL.SSLv23_METHOD) ctx.use_privatekey_file('serverkey.pem') ctx.use_certificate_file('servercert.pem') return ctx if __name__ == "__main__": from twisted.internet import reactor reactor.listenTCP(8000, MyHttpFactory()) reactor.listenSSL(8043, MyHttpFactory(), ServerContextFactory()) reactor.run() I'm testing this configuration with ApacheBench (ab), and I get some 800 requests/sec for HTTP, and only about 30 requests/sec for HTTPS. I now that the ratio for HTTPS is about 60% of HTTP, so I was wondering if I'm doing something wrong, or what is causing this problem. Thank you.

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Re: [Twisted-Python] Twisted to proxy php out to apache?
by David Reid May 23, 2006

May 23, 2006

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Remi Cool wrote: > Hello fellow twisters, Hello, > We have a rather large web app based on xul, xmlrpc (via twisted) and > php (via apache) .... and we would like to get it all (in due time) in > python. Sounds like a pretty good idea. > <snip things that suck about php> > > My question ... is it possible to pass php page requests from twisted to > apache so I don't suffer the speed loss but still have my app listening > on only one port (for http and xmlrpc) ? So can twisted be a proxy for > php or is this not the recommended way to go? This is absolutely possible, the resource you're probably interested in is twisted.web.proxy.ReverseProxyResource, which acts pretty much like mod_proxy for Apache. Also twisted.web/web2 and Nevow questions are best asked on the twisted-web mailling list. - -David - -- "Usually the protocol is this: I appoint someone for a task, which they are not qualified to do. Then, they have to fight a bear if they don't want to do it." -- Glyph Lefkowitz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (Darwin) iD8DBQFEc3x/rsrO6aeULcgRAgRXAJ9qMI4HXmelhaPDYIxvGI64InyNNACeOShG PibqTdpOB3AmlpEMOOMJuSw= =4zSs -----END PGP SIGNATURE-----

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