websocket organization of sending and receiving messages

I put websocket on the server, without nodejs.

I use this solution as a server: https://github.com/Doncode/simple_php_websocket_server

I start the server from the browser.

on the client:

var socket = new WebSocket("ws://мой адрес:9000/ws"); socket.onopen = function() { alert("Соединение установлено."); }; socket.onclose = function(event) { if (event.wasClean) { alert('Соединение закрыто чисто'); } else { alert('Обрыв соединения'); } alert('Код: ' + event.code + ' причина: ' + event.reason); }; socket.onmessage = function(event) { alert("Получены данные " + event.data); }; socket.onerror = function(error) { alert("Ошибка " + error.message); }; setInterval(function() { socket.send('msg1'); }, 5000); 

Connection is established, there are no errors.

But how to make the server respond? He is silent like a fish ...

The library has a function

 function websocket_onmessage($keyINsock, $str){ echo "\r\n"; echo "WEBSOCKET_ONMESSAGE[$keyINsock] $str \r\n"; echo "\r\n"; websock_send($keyINsock, $str); //эхо 

}

As I understand it, it should work after each received message, but this does not happen. How to be? Problem with server?