Callback from user A to user B

[IamNotHuman]

Is there a way to do a callback that passes throw the server to another user?

[sudoshreyas]

can you please be more specific?

[IamNotHuman]

For example:

// client A
this.socket.emit('call client b', room, (callback)=>{
    if(callback)
        console.log(true);
    else
        console.log(false);
});

// server

socket.on('call client b', function(room, callback1) {
    socket.to(room).emit('call client b', (callback2)=>{
        if(callback2)
           callback1(true);
        else
           callback1(false);
    });
});

// client B

socket.on('call client b', function(callback) {
     callback(true);
});

[Twois]

You can emit to client B from the server

//server
io.to(socketIdOfClientB).emit('keyOfClientBListener', { "success": true, "msg": "have some fun" });

//Client side
socket.on('keyOfClientBListener', (data) => { //do something });

[bharathnallamothu]

@Twois @IamNotHuman @darrachequesne @subdash @sudoshreyas i have 5 rooms on server let say "A", "B","C","D","E"
server side
i.e `io.on('connection', (socket) => {
console.log('New user connected');
socket.on('disconnect', () => {
console.log('User was disconnected');
});
});
//function that create rooms
function connectSocket(data) {
io.emit(data.device_id, data);
console.log('room',data.device_id, 'created');
}
// room creation call
connectSocket("A")

client side
var socket = io(url);
socket.on('connect', function () {
console.log('Connected to server');
});
socket.on(roomname, function (message) {
console.log(message);
});
`
problem
i want to leave room A and join room B
after joins room B i don't want to to hear data from room A

[LoganDark]

@bharathnallamothu excuse me, why did you mention me? I have nothing to do with this.

[bharathnallamothu]

@LoganDark i thought you are good at socket io if not ignore ... :(

[LoganDark]

Sorry, I'm not very experienced with socket.io. I don't use it very much. Please don't mention me for trivial reasons. Additionally, if you'd like help, please try explaining your issue a little better. What's a "switch", for example? I may not be able to help, but others might if you give them something to work off of.

[darrachequesne]

@bharathnallamothu please open a new issue (note: you can wrap your code example within ```js <your code> ```, so that it is easier to read)

@IamNotHuman to answer your question, no there is currently no way to use acknowledgements between two clients, it only works between the client and the server.

[darrachequesne]

Merged into #1811