Stop socket.io from reconnecting

Question

Simple scenario:

1. Client connects to server with socket.io (socket = io.connect(...))
2. Server crashes
3. Client tries to reconnect

Answer 1

I think what you need is to configure socket.io client to not reconnect is set property reconnect to false

I created a little server(server.js) to test this:

var io = require('socket.io').listen(8888);

io.sockets.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});

Then I created this test.js to test that it does not reconnect

var client = require('socket.io-client'),
    socket = client.connect('http://localhost:8888', {
        'reconnect': false
    });

socket.on('connect', function () {
    socket.on('news', function (data) {
        console.log(data);
        socket.emit('my other event', { my: 'data' });
    });
});

For test.js to work you will need to install socket.io-client from npm issuing npm install socket.io-client or by adding socket.io-client (dev-)dependency to your package.json.

When I stop server.js while test.js is running test.js will return immediately which I believe is your desired result. When I set reconnect to true the client will try to reconnect to server which is not the desired behaviour

Answer 2

Try the following code:

self.socket?.manager?.reconnects = false

Answer 3

You might want to handle the reconnection yourself.

// Disables the automatic reconnection
var socket = io.connect('http://server.com', {
    reconnection: false
});

// Reconnects on disconnection
socket.on('disconnect', function(){
    socket.connect(callback);
});

Note: old versions used reconnect instead of reconnection.

Answer 4

In a new socket.io 1.1.x you can do the following:

var manager = io.Manager('http://localhost:9823', { autoConnect: false });

Here is blog link.

Answer 5

you can just call socket.disconnect(), then it will stop trying to reconnect.

Answer 6

This one works great for me, though , it shoots one more attempt before stops completely.

socket.io-client": "2.2.0"

this.socket.io.reconnectionAttempts(0);