How to use the @uppy/companion.socket function in @uppy/companion

region: config.aws.aws_region,
        useAccelerateEndpoint: false,  // default: false,
        expires: 300,  // default: 300 (5 minutes)
        acl: 'private',  // default: public-read
      }
    },
    server: {
      host: `localhost:${config.img_storage_port}`,
      protocol: 'http',
      path: '/database_upload',
    },
    filePath: '/tmp',
    debug: true,
  };
  app.use('/database_upload', bodyParser.json(), companion.app(options));
  companion.socket(httpServer, options);

  logger.info(`Storage server is listening on ${config.img_storage_port} port...`);
  return httpServer;
}