AutoBahn bug workaround.

With AuthBahn WebSocket client, we must specify the subprotocol that the
server specifies.

See crossbario/autobahn-python#147


git-svn-id: https://origsvn.digium.com/svn/testsuite/asterisk/trunk@3925 a5964663-950a-4945-9369-5dd0b5cb08c1

lib/python/asterisk/ari.py

@@ -96,7 +96,7 @@ def __init__(self, host, apps, on_event, userpass, port=DEFAULT_PORT,
               (host, port,
                urllib.urlencode({'app': apps, 'api_key': '%s:%s' % userpass}))
         logger.info("WebSocketClientFactory(url=%s)" % url)
-        WebSocketClientFactory.__init__(self, url)
+        WebSocketClientFactory.__init__(self, url, debug = True, protocols=['ari'])
         self.on_event = on_event
         self.timeout_secs = timeout_secs
         self.protocol = self.__build_protocol