def set_tunnel(self, host, port=None, headers=None):
    raise NotImplementedError('HTTP CONNECT Tunnelling is not supported')
Sets up the host and the port for the HTTP CONNECT Tunnelling.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/dist27/gae_override/httplib.py/HTTPConnection.set_tunnel