Suds ignoring proxy setting

I went into #suds on freenode and Xelnor/rbarrois provided a great answer! Apparently the custom mapping in suds overrides urllib2's behavior for using the system configuration environment variables. This solution now relies on having the http_proxy/https_proxy/no_proxy environment variables set accordingly.

I hope this helps anyone else running into issues with proxies and suds (or other libraries that use suds). https://gist.github.com/3721801

from suds.transport.http import HttpTransport as SudsHttpTransport 


class WellBehavedHttpTransport(SudsHttpTransport): 
    """HttpTransport which properly obeys the ``*_proxy`` environment variables.""" 

    def u2handlers(self): 
        """Return a list of specific handlers to add. 

        The urllib2 logic regarding ``build_opener(*handlers)`` is: 

        - It has a list of default handlers to use 

        - If a subclass or an instance of one of those default handlers is given 
            in ``*handlers``, it overrides the default one. 

        Suds uses a custom {'protocol': 'proxy'} mapping in self.proxy, and adds 
        a ProxyHandler(self.proxy) to that list of handlers. 
        This overrides the default behaviour of urllib2, which would otherwise 
        use the system configuration (environment variables on Linux, System 
        Configuration on Mac OS, ...) to determine which proxies to use for 
        the current protocol, and when not to use a proxy (no_proxy). 

        Thus, passing an empty list will use the default ProxyHandler which 
        behaves correctly. 
        """ 
        return []

client = suds.client.Client(my_wsdl, transport=WellBehavedHttpTransport())

I think you can do by using a urllib2 opener like below.

import suds
t = suds.transport.http.HttpTransport()
proxy = urllib2.ProxyHandler({'http': 'http://localhost:8888'})
opener = urllib2.build_opener(proxy)
t.urlopener = opener
ws = suds.client.Client('file://sandbox.xml', transport=t)

I was actually able to get it working by doing two things:

• making sure there were keys in the proxy dict for http as well as https.
• setting the proxy using set_options AFTER creation of the client.

So, my relevant code looks like this:

self.suds_client = suds.client.Client(wsdl) self.suds_client.set_options(proxy={'http': 'http://localhost:8888', 'https': 'http://localhost:8888'})