How to make a function wait for a response from a WebSocket server?

Question

JavaScript

There is a function that should send a websocket request to the server and receive a response in 10-15 seconds

function getData(){
var sock = io("https://server.com");
var out = "";
sock.on("mess", function(data){out = data.message});
sock.emit("send", {text: "Hello, world!"});
return out;
}

but the function ends earlier and I don't need it.
How to make a function wait for a response from websocket.

Answer 1

You are doing something wrong. Here is asynchronous programming, you connect to a websocket, send a signal to perform an action and that's it, then just catch the signal (which will be sent by the first signal handler) that the action is completed.

Answer 2

Async, await or Promise if you like the old version.
https://learn.javascript.ru/async-await
https://learn.javascript.ru/promise-basics