php socket_write - php

Question

I'm trying to send some data (text) to the current socket.
Previously making hand shake - OK.
Then send data from client (Chrome, latest version) - socket_recv receives it - OK.
Then I'm trying to write to the same socket what I just read by socket_recv using socket_write - NOTHING.
Any errors (checked using socket_last_error and the function returns TRUE). It seems like all OK.
But onmessage event on the client-side not firing. Silence...
Who used websockets in PHP, please help.
Client:
var host = "ws://192.168.0.100:5000/wbs_r1.php";
try {
var socket = new WebSocket(host);
message('<p class="event">Socket Status: ' + socket.readyState);
socket.onopen = function (msg) {
message('<p class="event">Socket Status: ' + socket.readyState + ' (open)');
console.log(socket);
console.log(msg);
}
socket.onmessage = function (msg) {
message('<p class="message">Received: ' + msg.data);
console.log(socket);
console.log(msg);
}
socket.onclose = function (msg) {
message('<p class="event">Socket Status: ' + socket.readyState + ' (Closed)');
console.log(socket);
console.log(msg);
}
socket.onerror = function (msg) {
message('Error: ');
console.log(socket);
console.log(msg);
}
} catch (exception) {
message('<p>Error' + exception);
console.log(exception);
}
Server:
header('Content-Type: text/plain; charset=utf-8');
set_time_limit(0);
error_reporting(E_ALL);
ob_implicit_flush(true);
$sockets = array();
$handshakes = array();
$sockets["wbs1"] = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($sockets["wbs1"], SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($sockets["wbs1"], "0.0.0.0", 5000);
socket_listen($sockets["wbs1"], 20);
socket_set_nonblock($sockets["wbs1"]);
echo $sockets["wbs1"] . "\n";
while(true) {
$changed_sockets = $sockets;
$num_sockets = socket_select($changed_sockets, $write = null, $exceptions = null, null);
//print_r($changed_sockets);
foreach($changed_sockets as $socket) {
echo "\n\n\n" . "Current socket: " . $socket . "\n";
if($socket == $sockets["wbs1"]) {
if(($client = socket_accept($sockets["wbs1"])) >= 0) $sockets[] = $client;
echo "Accepting socket ".$socket."\n";
echo "Client: " . $client . "\n";
} else {
$index = array_search($socket, $sockets);
$len = #socket_recv($socket, $buffer, 2048, 0);
echo "Received " . $len . " bytes from socket ".$socket.": " . $buffer . "\n";
if($len == 0) {
unset($sockets[$index]);
unset($handshakes[$index]);
socket_close($socket);
echo "Closing socket " . $socket . "\n";
} else if(!isset($handshakes[$index])) {
$buffer = substr($buffer, strpos($buffer, "Sec-WebSocket-Key: ") + 19);
$accept = base64_encode(sha1(substr($buffer, 0, strpos($buffer, "\r\n")) . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));
$upgrade = "HTTP/1.1 101 Switching Protocols\r\n" .
"Upgrade: websocket\r\n" .
"Connection: Upgrade\r\n" .
"Sec-WebSocket-Accept: {$accept}\r\n\r\n" .
"Sec-Websocket-Extensions=x-webkit-deflate-frame". chr(0);
socket_write($socket, $upgrade, strlen($upgrade));
$handshakes[$index] = true;
echo "Handshaking: " . $socket . "\n";
} else {
$msg = "Hello!!!\n\0";
$wr = socket_write($socket,$msg);
if(!$wr) echo socket_strerror(socket_last_error()) . "\n";
else echo "Writing to socket " . $socket . "\n";
}
}
}
}