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POTwisted XML-RPC error
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  1. POTwisted XML-RPC error
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    copied!<p>I get an exception on both client and server side when I run the first example at <a href="http://buildbot.twistedmatrix.com/builds/sphinx-html/291-15849/projects/web/howto/xmlrpc.html" rel="nofollow">http://buildbot.twistedmatrix.com/builds/sphinx-html/291-15849/projects/web/howto/xmlrpc.html</a>. The server code I used is below:</p> <pre><code>from twisted.web import xmlrpc, server class Example(xmlrpc.XMLRPC): """An example object to be published.""" def xmlrpc_echo(self, x): """ Return all passed args. """ return x def xmlrpc_add(self, a, b): """ Return sum of arguments. """ return a + b def xmlrpc_fault(self): """ Raise a Fault indicating that the procedure should not be used. """ raise xmlrpc.Fault(123, "The fault procedure is faulty.") if __name__ == '__main__': from twisted.internet import reactor r = Example() reactor.listenTCP(7080, server.Site(r)) reactor.run() </code></pre> <p>Client side is below:</p> <pre><code>import xmlrpclib s = xmlrpclib.Server('http://localhost:7080/') print s.echo('Hello world') </code></pre> <p>The server side exception is:</p> <pre><code>Traceback (most recent call last): File "/usr/lib/python2.6/dist-packages/twisted/web/xmlrpc.py", line 150, in render_POST d.addCallback(self._cbRender, request, responseFailed) File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 260, in addCallback callbackKeywords=kw) File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 249, in addCallbacks self._runCallbacks() File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 441, in _runCallbacks self.result = callback(self.result, *args, **kw) --- &lt;exception caught here&gt; --- File "/usr/lib/python2.6/dist-packages/twisted/web/xmlrpc.py", line 170, in _cbRender allow_none=self.allowNone) exceptions.TypeError: dumps() got an unexpected keyword argument 'allow_none' </code></pre> <p>Client side exception is:</p> <pre><code>Traceback (most recent call last): File "./client.py", line 6, in &lt;module&gt; print s.echo('Hello world') File "/usr/local/lib/python2.6/dist-packages/xmlrpclib-1.0.1-py2.6.egg/xmlrpclib.py", line 986, in __call__ return self.__send(self.__name, args) File "/usr/local/lib/python2.6/dist-packages/xmlrpclib-1.0.1-py2.6.egg/xmlrpclib.py", line 1239, in __request verbose=self.__verbose File "/usr/local/lib/python2.6/dist-packages/xmlrpclib-1.0.1-py2.6.egg/xmlrpclib.py", line 1037, in request return self._parse_response(h.getfile(), sock) File "/usr/local/lib/python2.6/dist-packages/xmlrpclib-1.0.1-py2.6.egg/xmlrpclib.py", line 1136, in _parse_response p.close() File "/usr/local/lib/python2.6/dist-packages/xmlrpclib-1.0.1-py2.6.egg/xmlrpclib.py", line 508, in close self._parser.Parse("", 1) # end of data xml.parsers.expat.ExpatError: no element found: line 1, column 0 </code></pre>
 

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