Mailman 3 July 2011 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

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Porting the features of nevow.guard to twisted.web.guard
by L. Daniel Burr 05 Jan '12

05 Jan '12

Hi gang, Per a short chat with exarkun (thanks exarkun), I'm posting this to the list for discussion. A project upon which I am working requires a twisted.web service that allows a user to delegate authentication/authorization to a third party, e.g., Facebook, Twitter, et cetera. In so doing, I've found myself missing nevow.guard, since web.guard currently only has out-of-the-box support for HTTP Auth. I'd like to see web.guard expand to cover more kinds of auth, such as form-based auth or the OAuth-based solutions coming from so many social graph sites. With this in mind, I asked exarkun about this, and he mentioned that the only thing he does not consider to be garbage in nevow.guard is the feature-set, and that I should port the features to web, discarding the baggage. I'd like to solicit the list for some guidance as to what those features are, or should be, and hopefully end up with a ticket describing the features to be implemented, which I will then attempt to implement and contribute to twisted.web. Thanks, Daniel -- L. Daniel Burr ldanielburr(a)mac.com (312) 656-8387

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twistd and logging
by Ivan 25 Jul '11

25 Jul '11

How to divide log to stderr and stdout logs ? For example twistd have only one parameter-log: (--logfile for stdout ). and for stderr ? document.write('

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How to get Content-Type when I upload a picture?
by 水鏡 20 Jul '11

20 Jul '11

Dears, I used twisted to develop my web site just a little time. I have a question about how to get Content-Type when I upload a picture? When I get request.args["picture"], I only get picture content strings. Can I have a easy way to get the picture's Content-Type? -- Best regards, Eric Chen

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Authentication not working
by Viatcheslav Gachkaylo 18 Jul '11

18 Jul '11

Hello. I ask you to help me finding the source of problems with the following code. The result of opening page at https://serveraddr:serverport/services/admin is 403 Forbidden. It needs to show the output from UpdateManager.render_GET(). In server.tac ... root = resource.ForbiddenResource() err = resource.ForbiddenResource() root.putChild("service", err) upd = UpdateXMLProcessor() err.putChild("update2", upd) portal = Portal(PublicHTMLRealm(), [FilePasswordDB('httpd.password')]) credentialFactory = DigestCredentialFactory("md5", "House of Life Updates") admin = HTTPAuthSessionWrapper(portal, [credentialFactory]) err.putChild('admin', admin) ... In auth.py: class PublicHTMLRealm(object): implements(IRealm) def requestAvatar(self, avatarId, mind, *interfaces): if IResource in interfaces: resc = UpdateManager() resc.realm = self return (IResource, resc, lambda: None) raise NotImplementedError() in admin.py: class UpdateManager(resource.Resource): isLeaf = False pathFromRoot = '/service/admin' def __init__(self): resource.Resource.__init__(self) self.newFull = NewFullResource() self.putChild('new_full', self.newFull) self.newDelta = NewDeltaResource() self.putChild('new_delta', self.newDelta) self.switch = SwitchResource() self.putChild('switch', self.switch) self.putChild('', self) def render_GET(self, request): ... Is anything wrong here in these code parts? I have no errors shown in the console running with twistd -ny server.tac Thank you for your assistance, Viatcheslav Gachkaylo Crystalnix

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Setting up server environment for twisted application
by Viatcheslav Gachkaylo 16 Jul '11

16 Jul '11

Hello. Can you tell me what are the best practices for setting up a twistd daemon in a linux (centos) environment on a server. The server should be always uptime and relaunch on fatal error. I am sure there is a common procedure for this. Also I'm interested in providing secure access to twisted application services. I set up twisted in a python virtualenv and my application is running under user 'nobody'. What else could be done? What about permissions of the python script files and static server resources? Also, is it a good idea to listen (HTTP and HTTPS) on ports 8081 and 8083 and set up apache to redirect port 80 and port 443 on a subdomain to the appropriate twistd daemon ports? Thank you, Viatcheslav Gachkaylo Crystalnix

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How to kill child process after parent process is killed ?
by Ivan 15 Jul '11

15 Jul '11

simple example: from twisted.internet import utils, reactor output = utils.getProcessValue('sleep',['1000']) reactor.run() "kill pid" kill parent, but child remains is live .

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Re: [Twisted-web] How to do create a very simple tac file ?
by Ivan 14 Jul '11

14 Jul '11

Thank you for example. I write a simple plugin for template: from twisted.application import service, internet from twisted.internet import utils, reactor from twisted.python import log from twisted.python import usage class Options(usage.Options): pass class TestService(service.Service): name = 'TestService' def __init__(self, reactor): self.reactor = reactor def startService(self): self.reactor.callWhenRunning(self.Test) self.reactor.run() def Test(self): utils.getProcessOutputAndValue('/usr/bin/sleep', args = ['1000']) def makeService(options): s = TestService(reactor) return s It's work (twistd -n test ) , but kill pid ( without kill -9 ) don't work. I see a message "Main loop terminated" and script continue running. Why ? 14 июля 2011, 17:30 от Duncan McGreggor <duncan.mcgreggor(a)gmail.com>: On Thu, Jul 14, 2011 at 7:05 AM, Thorne, Stephen < stephen(a)thorne.id.au> wrote: > On Thu, Jul 14, 2011 at 13:50, Ivan < bdfy(a)mail.ru> wrote: >> I have a very simple example: >> >> from twisted.internet import protocol, utils, reactor >> >> >> def start(): >> utils.getProcessOutputAndValue('sleep',['1000']) >> >> reactor.callWhenRunning(start) >> reactor.run() > > I put together an example of how to create a 'complete' example > application using twisted plugins (which are also run with 'twistd' > but allow things like command line arguments) a few weeks ago. > > repo is here: https://bitbucket.org/jerub/twisted-plugin-example > > It shows how to do things in 'Service.startService', this approach > would map to using a .tac file as well, with some munging. > > https://bitbucket.org/jerub/twisted-plugin-example/src/a3af1e55194a/example… > > Stephen. I gotta second this. This is the best example of Twisted plugins I've seen yet. I know I'll regret saying this, but it's foolproof. d _______________________________________________ Twisted-web mailing list Twisted-web(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web

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How to do create a very simple tac file ?
by Ivan 14 Jul '11

14 Jul '11

I have a very simple example: from twisted.internet import protocol, utils, reactor def start(): utils.getProcessOutputAndValue('sleep',['1000']) reactor.callWhenRunning(start) reactor.run() How to create tac file for this example ?

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Agent request timeout
by John Aherne 07 Jul '11

07 Jul '11

So far this is where I have got to. In my timeout using callLater, I call d._canceller(). This calls _connectionLost_WAITING which is partly what I would expect. But it does not call _canceller_WAITING which I would have expected as well. The function at d._canceller would appear to be cancelConnection so I can see why it would go to loseConnection right away. But I have not found where cancelConnection resides yet. The _connectLost_WAITING then calls disconnectParser and finally does the errback with ResponseFailed and the connection is dropped cleanly. The fact that _canceller_WAITING is not called makes me think I am making the wrong call on the request deferred when I use d._canceller(), but I have not seen anything else I can call. Also d._canceller requires a parameter. And I can pass it anything and it seems to not make use of any argument I pass in. I have used d the deferred, None, 'TRANSMITTING' the string all with exactly the same effect. So it makes me think I am making the wrong call on the request deferred. Does anyone know if I should be calling some other function. Below is the result from a test run outputting various points the program runs through which might be helpful. E:\jahtest>test_post.py dispatcher <function dispatcher at 0x00FD57B0> template <function deliverBody at 0x00FD5770> dispatcher <function dispatcher at 0x00FD58F0> template <function _bodyDataRecei ved at 0x00FD58B0> dispatcher <function dispatcher at 0x00FD5A30> template <function _bodyDataFinis hed at 0x00FD59F0> dispatcher <function dispatcher at 0x00FD5F70> template <function _canceller at 0x00FD5F30> dispatcher <function dispatcher at 0x00FD9170> template <function connectionLost at 0x00FD9130> body <stringprod_resp.StringProducer object at 0x00F9BCB0> fff canceller <function cancelConnect at 0x00FD95B0> got do cancel connectionlost waiting [Failure instance: Traceback (failure with no frames): <c lass 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly. ] disconnect parser [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly. ] got error <bound method Failure.getErrorMessage of <twisted.python.failure.Failu re <class 'twisted.web._newclient.ResponseFailed'>>> Thanks for any info. John Aherne

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