How to response to all clients with websocket? - php

Question

I'm working on a small project with PHP-Websocket.
The Server side is running with this https://github.com/ghedipunk/PHP-Websockets
Server side:
require "PHP-Websockets/websockets.php";
class Server extends WebSocketServer
{
private $_connecting = 'Connecting..';
private $_welcome = 'SOCKET SERVER!';
protected function connected($user)
{
// Send welcome message to user when connected
}
protected function process($user, $message)
{
// data sent from client
$json = json_decode($message);
//prepare data response to client
$response = json_encode(array('type'=>'notify', 'message'=>'Client'.$user->id.' has sent a request.'));
$this->send($user, $response);
}
protected function closed($user)
{
// Alert on server
echo "User $user->id has closed the connection".PHP_EOL;
}
public function __destruct()
{
echo "Server Closed!".PHP_EOL;
}
}
$addr = 'localhost';
$port = '2207';
$server = new Server($addr, $port);
$server->run();
Client Side:
<script>
var uri = "ws://localhost:2207";
function socket_connect(){
socket = new WebSocket(uri);
if(!socket || socket == undefined) return false;
socket.onopen = function(){
console.log('Connected to Server!');
}
socket.onerror = function(){
console.log('Connection Failed!');
}
socket.onclose = function(){
socket_log('Connection Closed! ')
}
socket.onmessage = function(e){
//var response_data = e.data;
var msg = JSON.parse(e.data); //PHP sends Json data to client
console.log(msg.message);
var new_response = '<li>'+msg.message+'</li>;
$('#response').append(new_response);
}
}
function send_data_to_server(data){
if(!socket || socket == undefined) return false;
socket.send(JSON.stringify(data));
}
$(document).ready(function(){
socket_connect();
$('#send_request').click(function(){
send_data_to_server({message: 'Message sent from Client'});
});
});
</script>
<input type="button" id="send_request" value="Send Request to Server" />
<ul id="responses"></ul>
Everything works fine with those code above.
When Client1 sends a request to Server, the Server responses to him instantly. BUT the other clients can not see the response message.
So I want to make it go further : When a client sends a request to the server, the server will response to ALL clients so that all client can see the message.
How can I do that?
Thanks in advance && sorry for my bad English!

Answer 1

When a user connect, you need to add him to an array with every other users.
When one disconnect, remove him from this array.
Then when you want to send a message to every user, iterate on the array and send the message to each connected user.

Answer 2

WebSocketServer class has WebSocketServer::$users variable.
If you iterate over WebSocketServer::$users in split_packet function and then call main process it will work. In latest source code please iterate in line no-405.
//original
if ((preg_match('//u', $message)) || ($headers['opcode']==2)) {
//$this->stdout("Text msg encoded UTF-8 or Binary msg\n".$message);
$this->process($user, $message);
} else {
$this->stderr("not UTF-8\n");
}
//have to change
if ((preg_match('//u', $message)) || ($headers['opcode']==2)) {
//$this->stdout("Text msg encoded UTF-8 or Binary msg\n".$message);
foreach($this->users as $usr){
$this->process($usr, $message);
}
} else {
$this->stderr("not UTF-8\n");
}