code: def servers(self, server='api.telldus.com', port=http.HTTPS_PORT):
          
          logging.debug("Fetching server list from %s:%d", server, port)
  
          conn = http.HTTPSConnection(server, port, context=self.ssl_context())
          conn.request('GET', "/server/assign?protocolVersion=2")
  
          response = conn.getresponse()
          if response.status != http.OK:
              raise RuntimeError("Could not connect to {}:{}: {} {}".format(
                  server, port, response.status, response.reason))
  
          servers = []
  
          def extract_servers(name, attributes):
              if name == "server":
                  servers.append((attributes['address'],
                                  int(attributes['port'])))
  
          parser = expat.ParserCreate()
          parser.StartElementHandler = extract_servers
          parser.ParseFile(response)
  
          logging.debug("Found %d available servers", len(servers))
          return servers
docs: Fetch list of servers that can be connected to.
  
          :return: list of (address, port) tuples