'@param kwargs: Keyword arguments.
- B{proxy} - An http proxy to be specified on requests.
The proxy is defined as {protocol:proxy,}
- type: I{dict}
- default: {}
- B{timeout} - Set the url open timeout (seconds).
- type: I{float}
- default: 90
- B{username} - The username used for http authentication.
- type: I{str}
- default: None
- B{password} - The password used for http authentication.
- type: I{str}
- default: None'

def __init__(self, **kwargs):

    HttpTransport.__init__(self, **kwargs)
    self.pm = u2.HTTPPasswordMgrWithDefaultRealm()
