io.to(socketid).emit() not working

[hackthedev]

Hi.

Im having the following line:
io.to(toKey).emit("sendInfo", "<response>" + socket.id + "</response>");

toKey is the socket id of another connection. Im using chrome for client 1 and edge for client 2.

My problem is that there is nothing happening at all. Its seems to not get executed, but also is not throwing any error. Im executing io.to in the index.js File (server).

Updated to the latest node.js version as well and same for npm.

This is the code for the event

socket.on('sendInfo', function(message) {
        alert("Working");
        console.log("Sending information back to user " + fromRegex(message)[0]);
        socket.emit("sendBackRequestInfo", fromRegex(message)[0], getCookie("username"), getCookie("tag"), getCookie("key"));
    });

its not being triggered. If i do io.emit it works. same as if i do io.to(socket.id).emit(..) (my id).

Its Node.js 16.16.0 and Socket.io.js v4.5

[FunXTime]

Hi, this shall help you.

(From https://socket.io/docs/v4/server-api/#sockettoroom example)

This method you attempted will NOT work as it will send it to everyone in the room.

[danilo-vieira]

In their code example he is using io.to not socket.to what means it was to work. Here im with same problem :/

[ghost]

Same problem here I am using Socket.IO version 3.x and I want to emit to a particular socket ( private messaging kind )
i use io.to(socketId).emit('event', {}) but client does not receive this event

even though client is connected to the socket server

I am using node JS version 14.19.0 in backend and in frontend we have iOS app which does not receive this event

[CristianmMst]

¿Could you solve it?

[hackthedev]

The following code is working for me now

io.to(socket.id).emit("updateMemberList");

Im using socket.io v4.6.1

[lakshmipriya-maticz]

this is not working for me

[lakshmipriya-maticz]

I have a socket id to emit sepcific user

my code ,
io.to(socketid).emit("updatemsg","ok")

its not receieved on socketid user
@hackthedev

[Nour-Banoun]

after each socket connection add the user to his socket channnel

io.on('connection', (socket) =>{
  socket.join(socket.id)
.
.
.
}

then you can emit to the socket id

socket.to(rec_socket_id).emit('event',{})

[darrachequesne]

Calling socket.join(socket.id) is already done for you by the library so it's not necessary.

Source:

socket.io/lib/socket.ts

Lines 597 to 600 in b56da8a

	_onconnect(): void {
	debug("socket connected - writing packet");
	this.connected = true;
	this.join(this.id);

[Oleh1Kuper]

I had the same problem, the code below works for me

server.js
io.to(receiverSocketId).to(socket.id).emit('event', data)