[Twisted-web] Namespace in 200 OK response from SOAP server?

[Ignacio Mas Ivars]

Hi all, 
I am having a problem with a SOAP server, because the answer I am
sending does not include the namespace that comes with the request.

This is the full interaction of my server using a test python client:

POST /SOAP HTTP/1.0
Host: 127.0.0.1
User-Agent: Twisted PageGetter
Content-Length: 734
SOAPAction: get_media_URL
content-type: text/xml
connection: close

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/1999/XMLSchema">
<SOAP-ENV:Body>
<ns1:get_media_URL xmlns:ns1="urn:ms" SOAP-ENC:root="1">
<v1 xsi:type="xsd:string">MyContent</ns1:get_media_URL>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

HTTP/1.0 200 OK
Date: Wed, 08 Nov 2006 16:12:50 GMT
Content-length: 550
Content-type: text/xml; charset="UTF-8"
Server: TwistedWeb/2.4.0

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/1999/XMLSchema">
<SOAP-ENV:Body>
<get_media_URLResponse SOAP-ENC:root="1">
<Result xsi:type="xsd:string">Result</Result>
</get_media_URLResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

The problem is that the real SOAP client that sends the request is
expecting an answer that contains the namespace as well, so that the
answer should be:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/1999/XMLSchema">
<SOAP-ENV:Body>
<ns1:get_media_URLResponse xmlns:ns1="urn:ms" SOAP-ENC:root="1">
<Result xsi:type="xsd:string">Result</Result>
</ns1:get_media_URLResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

The code of my server is as simple as:

def getQuote():
    return "Result"

class SOAPListener(soap.SOAPPublisher):
def __init__(self):
print "SM controller started"

def soap_get_media_URL(self, message):
        print "Got: ", message
        return getQuote()

def main():
    from twisted.internet import reactor
    root = resource.Resource()
    root.putChild('SOAP', SOAPListener())
    reactor.listenTCP(8080, server.Site(root))
    reactor.run()

if __name__ == '__main__':
    main()


Now, how can I force the server to answer back with the proper
namespace? The client refuses to understand the message back
otherwise... Any help will be greatly appreciated!

Thanks,
/Nacho

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