Socket.io sleep some client

Question

I have a socket.io application. Is there a way to temporarily lock a connection (Only a single connection)for a certain amount of time(say 30 seconds) without dropping the connection. What I want to do is, after an event is triggered in the client side, I want that event not to be triggered again before 30 seconds. By the way I am unable to do this in the client side because of the project restrictions.

score 1 · Answer 1 · answered Oct 19 '15 at 13:35

Firstly I don't know any restrictions on server-side but it might affect client-side also , however basically you should create a room and then you must specify to which room gets socket messages. You can create like activeRoom and suspendedClients (room namings are completely as an example).

Then you can specify room to send message. To create 30 sec timing for specific user; get his socketId and set its countdown time 30 as a json object.

// Multiple Clients may be suspended , use case ?.
var suspendedClients = [{
  socketId: 123981787,
  countdown: 30
},{
  socketId: 987987788,
  countdown: 21
}];
// That users are also in suspendedClients room so they can't get messages.
// Also you might use redis to store them(?. if there is no restrictions about to use a new datastore).

You may check in setInterval function per second suspended clients.

if(suspendedClients[i].countdown == 0) {
   // Remove client from suspendedClients room.
}

This idea is a general concept. You can shape that idea according to your exact requirements.

score 0 · Answer 2 · edited May 23 '17 at 12:23

Socket.io hasn't exactly that function. But you can code it in many ways

in any case you need to stop sending that event or stop receiving

If you can't modify client side, just save socket.id in array of stopped and setTimeout for 30 seconds to pull it out from array

another approach to subscribe / unsubscribe listeners How to unsubscribe from a socket.io subscription?

and I'm thinking you can use rooms for that logic.

All sockets in one room and all listeners send / receive for that room
After event fired, you leave that room for your socket
After 30 seconds you join to it again

Socket.io sleep some client

2 Answers2