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POC# Client to Consume Google App Engine RESTful Webservice (rpc XML)
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copied!<p>I think I hit a problem when using C# client to consume Google App Engine Webservice. The Google App Engine code I use <a href="http://appengine-cookbook.appspot.com/recipe/xml-rpc-server-using-google-app-engine/" rel="nofollow noreferrer">is here</a>. This is how the python script on server would look like:</p> <pre><code>from google.appengine.ext import webapp from google.appengine.ext.webapp.util import run_wsgi_app import logging from StringIO import StringIO import traceback import xmlrpclib from xmlrpcserver import XmlRpcServer class Application: def __init__(self): pass def getName(self,meta): return 'example' class XMLRpcHandler(webapp.RequestHandler): rpcserver = None def __init__(self): self.rpcserver = XmlRpcServer() app = Application() self.rpcserver.register_class('app',app) def post(self): request = StringIO(self.request.body) request.seek(0) response = StringIO() try: self.rpcserver.execute(request, response, None) except Exception, e: logging.error('Error executing: '+str(e)) for line in traceback.format_exc().split('\n'): logging.error(line) finally: response.seek(0) rstr = response.read() self.response.headers['Content-type'] = 'text/xml' self.response.headers['Content-length'] = "%d"%len(rstr) self.response.out.write(rstr) application = webapp.WSGIApplication( [('/xmlrpc/', XMLRpcHandler)], debug=True) def main(): run_wsgi_app(application) if __name__ == "__main__": main() </code></pre> <p>The client side ( in Python) is this:</p> <pre><code>import xmlrpclib s = xmlrpclib.Server('http://localhost:8080/xmlrpc/') print s.app.getName() </code></pre> <p>I have no problem in using Python client to retrieve values from Google App Engine, but I do have difficulties in using a C# client to retrieve the values. The error I got was <code>404 method not found</code> when I am trying to <code>GetResponse</code> from the web request. </p> <p>This is my code</p> <pre><code> var request = (HttpWebRequest)WebRequest.Create("http://localhost:8080/xmlrpc/app"); request.Method = "GET"; request.ContentLength = 0; request.ContentType = "text/xml"; using (HttpWebResponse response = request.GetResponse() as HttpWebResponse) //404 method not found error here. { } </code></pre> <p>Edit: For end points, I've tried:</p> <ol> <li><a href="http://localhost:8080/xmlrpc" rel="nofollow noreferrer">http://localhost:8080/xmlrpc</a></li> <li><a href="http://localhost:8080/xmlrpc/" rel="nofollow noreferrer">http://localhost:8080/xmlrpc/</a></li> <li><a href="http://localhost:8080/xmlrpc/app" rel="nofollow noreferrer">http://localhost:8080/xmlrpc/app</a></li> <li><a href="http://localhost:8080/xmlrpc/app/" rel="nofollow noreferrer">http://localhost:8080/xmlrpc/app/</a></li> </ol> <p>But none works</p> <p>I think it must be that the url is wrong, but I don't know how to get it right. Any idea?</p>

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