护照插座io认证

Question

我正在尝试使用护照验证我的会话。套接字： npm passport socket.io doc

我试图遵循npm文档：

在我的前端：

verify = () => {
    let socket = null;
    var token = sessionStorage.getItem('token');
    socket = io.connect('http://localhost:8080', {
    query: {token: token}
    });
}

我的后端：

     let io = require('socket.io')(server);
      app.set("io", io);

io.use(passportSocketIo.authorize({
  secret: config.jwt.secret, 
  success:      onAuthorizeSuccess,  // *optional* callback on success
  fail:         onAuthorizeFail,     // the session_secret to parse the cookie
}));

    function onAuthorizeSuccess(data, accept){
      console.log('successful connection to socket.io');

      accept(null, true);

      accept();
    }

    function onAuthorizeFail(data, message, error, accept){
      if(error)
        throw new Error(message);
      console.log('failed connection to socket.io:', message);

    }

我得到这个错误：

auth.store.get(data.sessionID, function(err, session){
               ^
TypeError: Cannot read property 'get' of null