Disconnect event fire after 2 minutes - node.js

Question

I am using node.js and socket.io to create a chat application.
socket.on('disconnect',function(data){
console.log("disconnected");
}
This event is fired as soon as the client gets disconnected(tab closed or network problem).
I want the disconnect event to be fired after 1 minute of disconnection from client. Is that possible? Is there any configuration in socket.io?

Answer 1

That capability is not built into socket.io. The disconnect event fires when the socket is disconnected. Period. If you want to trigger some activity 1 minute after a disconnect, you can build your own timer to do so.
socket.on('disconnect',function(data){
setTimeout(function() {
console.log("disconnected");
}, 60 * 1000);
}
If you want to trigger your event only if the client does not reconnect within 1 minute, then you can code that also, but it is a little more involved as you have to save the timer for the setTimeout() and then cancel it if that specific client reconnects before the timer fires.
Based on what you put in your answer, here's what I think is an improved version:
(function() {
var origClose = socket.onclose;
socket.onclose = function(reason){
var self = this;
var args = Array.prototype.slice.call(arguments);
/* Delay of 1 second to remove from all rooms and disconnect the id */
setTimeout(function() {
origClose.apply(self, args);
}, 60 * 1000);
}
})();

Answer 2

You have some parameters to control this behavior server-side. See close timeout and heartbeat timeout here
and if you're using v1.0 you'll need to set the options in the new style described here.
Note that these don't technically do what you're asking - they simply lengthen the amount of time a client has to reconnect.

Answer 3

Socket.onclose is fired immediately after disconnection before the disconnect event.
disconnect event can be delayed by changing as follows.
socket.onclose = function(reason){
console.log(socket.adapter.sids[socket.id]);
Object.getPrototypeOf(this).onclose.call(this,reason);
/* Delay of 1 seconds to remove from all rooms and disconnect the id */
setTimeout(function() {
if (!this.connected) return this;
debug('closing socket - reason %s', reason);
this.leaveAll();
this.nsp.remove(this);
this.client.remove(this);
this.connected = false;
this.disconnected = true;
delete this.nsp.connected[this.id];
this.emit('disconnect', reason);
}, 60 * 1000);
}