code: def start(self):
          
          self.started = True
          if self.app:
              web_port = self.config['network']['web_port']
              logger.info('Starting server listening on port {0}'.format(web_port))
              key_file = os.path.join(self.work_dir, 'server.key')
              cert_file = os.path.join(self.work_dir, 'server.crt')
              http_server = WSGIServer(('', web_port), self.app, keyfile=key_file, certfile=cert_file)
              http_server_greenlet = gevent.spawn(http_server.serve_forever)
              self.greenlets.append(http_server_greenlet)
  
          stop_if_not_write_workdir(self.work_dir)
          logger.info('Server started.')
          gevent.joinall(self.greenlets)
docs: Starts the BeeSwarm server.