ver.
          proxy_port: The port that the proxy server is running on.
          proxy_rdns: If True (default), DNS queries will not be performed
          locally, and instead, handed to the proxy to resolve.  This is useful
          if the network does not allow resolution of non-local names. In
          httplib2 0.9 and earlier, this defaulted to False.
          proxy_user: The username used to authenticate with the proxy server.
          proxy_pass: The password used to authenticate with the proxy server.
          proxy_headers: Additional or modified headers for the proxy connect
          request.
        N)
r?