node.js - Flutter Socket io 几秒钟后断开连接

Question

我正在使用使用 express 的本地套接字服务器，该服务器使用 ngrok 公开到互联网。这是服务器代码:

const app = require('express')();
const http = require('http').createServer(app);

app.get('/', (req, res) => {
   res.send("Node Server is running. Yay!!");
});

//Socket Logic
const socketio = require('socket.io')(http)
socketio.on("connection", (userSocket) => {
   console.log('Connected to socket');
});

http.listen(3000, () => {
 console.log('listening on port 3000');
});

我的连接逻辑是:

 void connectToServer() {
    try {
      socket = io('https://fa6387728fcd.ngrok.io', <String, dynamic>{
        'transports': ['websocket'],
        'autoConnect': false,
      });

      // Connect to websocket
      socket.connect();

      // Handle socket events
      socket.on('connect', (data) => print('Connected to socket server'));
      socket.on('disconnect', (reason) => print('disconnected $reason'));
      socket.on('error', (err) => print('Error: $err'));
    } catch (e) {
      print(e.toString());
    }
  }

但我一直收到 disconnected ping timeout 或有时我收到 disconnected transport close

Answer 1

我遇到了同样的问题。问题不是由 socket_io_client 引起的包。

当我在服务器端更新 socket.io 时，问题就解决了。只需在您的 node.js 服务器上运行 npm install socket.io@latest 命令即可。