Mailman 3 May 2009 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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Receiving gaierror 10093 getaddrinfo failed
by Information 31 May '09

31 May '09

Hello, I am receiving the following error when trying to start a tcp server with twisted with python 2.5: gaierror: (10093, 'getaddrinfo failed') and the code I am using to start the server is reactor.listenTCP(5555, ServerFactory()) reactor.run(installSignalHandlers=0) It doesn't cause this error on all systems, just some, and the system that is running this python code is able to access the Internet and successfully do DNS lookups. What else can be the issue? I Thanks, John

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mointwisted over SSL
by Cyrille Vladimirov 29 May '09

29 May '09

Hi there! I am new in twisted. These days I try to run a moinmoin wiki server and using mointwisted python server as daemon. The server works fine (opens port 80 for connection and server wiki with no problem) but I am getting in trouble for run it over SSL. First I try to find out somewhere in docs and the only thing I found is: how to generate key and certificate and put 2 lines, about ssl_privekey and ssl_certificate. I am not sure in which config file(s) I have to put these lines and how exactly to run SSL part of the server and open port 443 for accepting of encrypted connections Please help me. Cyrille

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Strange Guard Behaviour
by Federico Tomassini 08 May '09

08 May '09

Hello alls, I have a particular (a little bit difficult) scenario and something is not working as I think, can't understand why. I'm launching, in the same process, two guard`ed application: A ~> localhost:8080 B ~> localhots:9090 Running Apache and depending by the requested segments, I proxy the request to A or B (fqdn is always the same and under https). In particular: if segs[0] == 'foo': redirect(B) else: redirect(A) If I do: 1) I login A (not anonymously). All works. 2) With the same Browser, I login to B (not anon). All is working. Now, making the following requests, something strange happens: * https://fqdn/foo/bla/bla/ the B resource is (correctly) returned. Apache is proxing the request to B. * https://fqdn/ the request is (correctly) forwarded to A... but the B resource is returned! * https://fqdn/some/url/here/ (some <> foo) the A resource is returned, Apache proxing (correctly) to A. I'm really blue, because I can't understand the different behaviour between "/" and "/notfoo/". Apache proxies to A, but in the first case B is returned, in the second, A is returned. Note that: - cookieKey is different for the two resources - I'm sure, reading apache logs, that requests are correctly proxied. Do you have some idea? thank You br -- efphe Today is Pungenday, the 55th day of Discord in the YOLD 3175

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Close TCP Connection Using web resource.Resource
by Michael Toop 08 May '09

08 May '09

Hi, We are struggling to close a TCP connection using web resource.Resource (the TR69 SOAP spec. mandates that we close the connection when we are done). Our site is served in a TCP reactor & uses the NOT_DONE_YET variable in the def render_POST method. We close the render_POST with a request.write('data') & a request.finish() but the connection stays open, stub code below. We are not sure if it is the fact that we are using chunked encoding or if this is a bug? Please assist. Warm Regards, Michael Toop def render_POST(self,request): ...do stuff d = getSoapText(request) d.addCallback(request.write) d.addCallback(request.close()) return server.NOT_DONE_YET

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Re: [Twisted-web] system.multicall support for the XML-RPC server
by Dave Benjamin 05 May '09

05 May '09

On Sat, 2 May 2009, twisted-web-request(a)twistedmatrix.com wrote: > Hi Dave! Thanks for taking the time to contribute. > > Unfortunately, this contribution will almost certainly be lost if you > don't open a ticket for it at <http://twistedmatrix.com/trac/newticket>. > Once you've done that, you'll need to mark it for review by adding the > "review" keyword and reassigning it to nobody - the empty entry at the > top of the "reassign" menu. Thanks for your thoughtful comments! I created a ticket with a patch and unit test and tried to respond to all of the things you mentioned. The ticket is here: http://twistedmatrix.com/trac/ticket/3823 >> I had to add to the XMLRPCIntrospection class in order to include my >> method in the system namespace, even though it is not really an >> introspection method. It's also possible to subclass >> XMLRPCIntrospection >> from outside of xmlrpc.py and use putSubHandler instead of >> xmlrpc.addIntrospection to create the "system" namespace. > > I'm not quite sure what you're getting at here - do you think one of > these other approaches would be better! Well, I'm sort of thinking out loud here, because I'm not sure. As designed, the way to get a "system" namespace in your XML-RPC server is to call xmlrpc.addIntrospection(server). However, the "system.multicall" method belongs to the "system" namespace and is not an introspection method. If I were to add another method called xmlrpc.addMulticall(), the two methods would both be responsible for creating the system namespace. Would the multicall method go in its own class? Or would it be monkey-patched onto the XMLRPCIntrospection class? The latter would avoid breaking existing code, but it would also create an order of operations requirement (first introspection, then multicall), which would be inelegant. For comparison, this is how SimpleXMLRPCServer does it: http://docs.python.org/library/simplexmlrpcserver.html#SimpleXMLRPCServer.S… > ... join us in the #twisted IRC channel on chat.freenode.net. I'll be around as "ramenboy" - maybe I'll see you around. Thanks, Dave -- .. Dave Benjamin - Software Developer - Phoenix, Arizona .. http://ramenlabs.com | http://twitter.com/ramenlabs

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system.multicall support for the XML-RPC server
by Dave Benjamin 01 May '09

01 May '09

Hello, The Twisted XML-RPC server does not come with system.multicall, a de facto standard method which allows a batch of methods to be called in a single request. I wrote an implementation which handles deferred results and ensures that exceptions in one method call do not prevent the other methods from executing. I had to add to the XMLRPCIntrospection class in order to include my method in the system namespace, even though it is not really an introspection method. It's also possible to subclass XMLRPCIntrospection from outside of xmlrpc.py and use putSubHandler instead of xmlrpc.addIntrospection to create the "system" namespace. Anyhow, let me know what you think. Patch follows. Thanks for making Twisted such a joy to read and use. Dave --- /usr/share/pyshared/twisted/web/xmlrpc.py 2008-09-05 02:18:26.000000000 -0700 +++ xmlrpc.py 2009-05-01 10:58:39.000000000 -0700 @@ -246,6 +246,33 @@ xmlrpc_methodSignature.signature = [['array', 'string'], ['string', 'string']] + def xmlrpc_multicall(self, calls): + """ + Boxcar multiple RPC calls in one request. + """ + results = [] + for call in calls: + name = call['methodName'] + params = call['params'] + method = self._xmlrpc_parent._getFunction(name) + try: + d = defer.maybeDeferred(method, *params) + g = defer.waitForDeferred(d) + yield g + result = [g.getResult()] + except Fault, f: + result = {'faultCode': f.faultCode, + 'faultString': f.faultString} + except Exception, e: + log.err(e) + result = {'faultCode': self.FAILURE, + 'faultString': 'error'} + results.append(result) + yield results + + xmlrpc_multicall = defer.deferredGenerator(xmlrpc_multicall) + xmlrpc_multicall.signature = [['array', 'array']] + def addIntrospection(xmlrpc): """

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