[Twisted-Python] call XMLRPC

joel tremblet bingopitts at gmail.com
Tue Apr 17 23:39:40 EDT 2012

Thank for your help

It's right, the code number 1 is not well structured that is the reason I
modified it for the code number 2
But in the first one the xml_rpc call retun the good answer and in the
second one I received a error message

I tried your code,this is a better structure (The Class Resource is in the
next example in the book)

 But the code doesn't work, I have the same error message about xml_rpc

[Failure instance: Traceback: <class 'xmlrpclib.Fault'>: <Fault -32602:
'server error. invalid method parameters'>
--- <exception caught here> ---

The issue is how to call xml_rpc callRemote correctly ?

Thank again

Le 17 avril 2012 04:46, Phil Mayers <p.mayers at imperial.ac.uk> a écrit :

> On 04/17/2012 03:38 AM, joel tremblet wrote:
> > I try to declare the Proxy(OF_XMLRPC_URL) differently, without success
> >
> > Where is my mistake ....
> That code is all wrong, and (to be blunt) pretty horrible too.
> Why have you re-implemented a HTTP protocol yourself? You're bound to
> get this wrong (and in fact have, in several ways). Don't do this. Use
> the HTTP stack that comes with Twisted.
> Anyway, your major mistake in the 1st example is that, at the end of the
> lineReceived method, you always call the sendResponse() method. This
> happens immediately, before the XMLRPC reply has come back, so your code
> sends "no value". You need to attach the sendResponse method to the
> deferred returned from the xmlrpc call.
> I would junk it and start again, like this:
> from twisted.web import server, resource, xmlrpc, http
> proxy = xmlrpc.Proxy(XMLRPC_URL)
> class MyResource(resource.Resource):
>   isLeaf = True
>   def render_GET(self, request):
>     sessid = request.args['sessid'][0]
>     keyid = request.args['keyid'][0]
>     d = proxy.callRemote('checkCommand', sessid, keyid)
>     d.addCallback(self._done, request)
>     d.addErrback(self._err, request)
>     return server.NOT_DONE_YET
>   def _done(self, res, request):
>     if res!=1:
>       request.setResponseCode(406)
>     else:
>       request.setResponseCode(200)
>     request.finish()
>   def _err(self, failure, request):
>     request.setResponseCode(405)
>     request.finish()
> reactor.listenTCP(8080, server.Site(MyResource()))
> reactor.run()
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