E-COM-NET

Question

I have a camera on my network which I am trying to connect to with suds but suds doesn't send all the information needed. I need to put extra soap headers not defined in the WSDL file so the camera can understand the message. All the headers are contained in a SOAP envelope and then the suds command should be in the body of the message.

I have checked the suds website and it says to pass in the headers like so: (This passes in the element as a header but I have an envelope so I'm not sure how to input this)

from suds.sax.element import Element client = client(url) ssnns = ('ssn', 'http://namespaces/sessionid') ssn = Element('SessionID', ns=ssnns).setText('123') client.set_options(soapheaders=ssn) result = client.service.addPerson(person)

Now, I am not sure how I would implement this. Say for example, I have the below header:

<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope" xmlns:SOAP ENC="http://www.w3.org/2003/05/soap-encoding" <wsa:MessageID SOAP-ENV:mustUnderstand="true">urn:uuid:43268c01-f09c6</wsa:MessageID> <SOAP-ENV:Header>

Using this or a similar example does anyone know how I would get this passed into the soap command so my camera understands?

Thanks

score 11 · Accepted Answer

I have worked out how to enter in new headers and namespaces in suds. As stated above you create an Element and pass it in as a soapheader as so:

from suds.sax.element import Element client = client(url) ssnns = ('ssn', 'http://namespaces/sessionid') ssn = Element('SessionID', ns=ssnns).setText('123') client.set_options(soapheaders=ssn) result = client.service.addPerson(person)

But if you would like to add a namespace I have found adding a prefix seem's to do the trick. So when you create one of the elements you add addPrefix. I'm not sure if this was the way it was intended to be done but it work's.

ssn = Element('SessionID', ns=ssnns).setText('123').addPrefix(p='SOAP-ENC', u='http://www.w3.org/2003/05/soap-encoding')

The p = 'SOAP-ENC' can be any prefix eg. wsa and the u = http://address is the address of the namespace.

A complete script that would run could be:

#!/usr/local/bin/python2.6 import suds #import logging from suds.client import Client from suds.sax.element import Element from suds.sax.attribute import Attribute from suds.xsd.sxbasic import Import def absoluteMove(): # connects to WSDL file and stores location in variable 'client' client = Client('http://10.10.10.10/p.wsdl') client.options.location = 'http://10.10.10.10:32963' # Create the header wsans = ('wsa', 'http://schemas.xmlsoap.org/ws/2004/08/addressing') mustAttribute = Attribute('SOAP-ENV:mustUnderstand', 'true') n1s = ('SOAP-ENC', 'http://www.w3.org/2003/05/soap-encoding') msgId = Element('Element').addPrefix(p='SOAP-ENC', u='http://www.w3.org/2003/05/soap-encoding') msgId2 = Element('Address', ns=wsans).setText('http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous') msgId1 = Element('ReplyTo', ns=wsans).insert(msgId2) msgId1.append(mustAttribute) msgId3 = Element('To', ns=wsans).setText('http://10.10.10.10:32954') msgId3.append(mustAttribute) client.set_options(soapheaders=[msgId, msgId1, msgId3, msgId2]) # Create 'token' object to pass as an argument using the 'factory' namespace token = client.factory.create('ns4:ReferenceToken') # Create 'dest' object to pass as an argument and values passed to this object dest = client.factory.create('ns4:PTZVector') dest.PanTilt._x=1 dest.PanTilt._y=4.9 dest.Zoom._x=1 # Create 'speed' object to pass as an argument and values passed to this object speed = client.factory.create('ns4:PTZSpeed') speed.PanTilt._x=0 speed.PanTilt._y=0 speed.Zoom._x=1 # 'AbsoluteMove' method invoked passing in the new values entered in the above objects try: result = client.service.AbsoluteMove(token, dest, speed) print "absoluteMove result ", result return result except suds.WebFault, e: print "suds.WebFaults caught: " print e if __name__ == '__main__': result = absoluteMove()

This moves the camera. To change the type of soap-envelope check my next question.

You can add logging into this script whci allow's you to check what xml command you have sent which is handy:

import logging logging.basicConfig(level=logging.INFO) logging.getLogger('suds.client').setLevel(logging.DEBUG)

The location can be put into the script as an option if the location is not in the wsdl file.

How to pass SOAP headers into python SUDS that are not defined in WSDL file

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