code: def ws_connect(message):
      
      prefix, language = message['path'].strip('/').split('/')
      gr = Group('knocker-{0}'.format(language))
      gr.add(message.reply_channel)
      message.channel_session['knocker'] = language
      message.reply_channel.send({"accept": True})
docs: Channels connection setup.
      Register the current client on the related Group according to the language