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testSrv.php
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testSrv.php
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<?php
$host = 'localhost'; //host
$port = '9000'; //port
$null = NULL; //null var
//Create TCP/IP sream socket
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
//reuseable port
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);
//bind socket to specified host
socket_bind($socket, 0, $port);
//listen to port
socket_listen($socket);
//create & add listning socket to the list
$clients = array($socket);
//start endless loop, so that our script doesn't stop
$tOld = gmdate("Y-m-d H:i:s");
while (true) {
$changed = $clients;
socket_select($changed, $null, $null, 0, 10);
if (in_array($socket, $changed)) { // NEW CONNECION
$socket_new = socket_accept($socket);
$clients[] = $socket_new;
$header = socket_read($socket_new, 1024);
perform_handshaking($header, $socket_new, $host, $port);
socket_getpeername($socket_new, $ip); broadcast(["type" => "system", "message"=>$ip." Connected"]);
echo "$ip connected\n";
$found_socket = array_search($socket, $changed);
unset($changed[$found_socket]);
}
foreach ($changed as $changed_socket) {
while(socket_recv($changed_socket, $buf, 1024, 0) >= 1) {
$txtIn = unmask($buf);
$msgIn = json_decode($txtIn);
// handle message somehow .. todo!
break 2;
}
$buf = @socket_read($changed_socket, 1024, PHP_NORMAL_READ);
if ($buf === false) {
$found_socket = array_search($changed_socket, $clients);
socket_getpeername($changed_socket, $ip);
unset($clients[$found_socket]);
broadcast(["type" => "system", "message"=>$ip." disconnected"]);
echo "$ip disconnected\n";
}
}
$tNow = gmdate("Y-m-d H:i:s");
if ($tNow != $tOld) {
broadcast(["type" => "calldata", "data" =>$tNow]);
$tOld = $tNow;
}
}
socket_close($socket);
function broadcast($msg) {
$msgMasked = mask(json_encode($msg));
global $clients;
foreach($clients as $changed_socket) {
@socket_write($changed_socket,$msgMasked,strlen($msgMasked));
}
return true;
}
//Unmask incoming framed message
function unmask($text) {
$length = ord($text[1]) & 127;
if($length == 126) {
$masks = substr($text, 4, 4);
$data = substr($text, 8);
}
elseif($length == 127) {
$masks = substr($text, 10, 4);
$data = substr($text, 14);
}
else {
$masks = substr($text, 2, 4);
$data = substr($text, 6);
}
$text = "";
for ($i = 0; $i < strlen($data); ++$i) {
$text .= $data[$i] ^ $masks[$i%4];
}
return $text;
}
//Encode message for transfer to client.
function mask($text)
{
$b1 = 0x80 | (0x1 & 0x0f);
$length = strlen($text);
if($length <= 125)
$header = pack('CC', $b1, $length);
elseif($length > 125 && $length < 65536)
$header = pack('CCn', $b1, 126, $length);
elseif($length >= 65536)
$header = pack('CCNN', $b1, 127, $length);
return $header.$text;
}
//handshake new client.
function perform_handshaking($receved_header,$client_conn, $host, $port)
{
$headers = array();
$lines = preg_split("/\r\n/", $receved_header);
foreach($lines as $line)
{
$line = chop($line);
if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
{
$headers[$matches[1]] = $matches[2];
}
}
$secKey = $headers['Sec-WebSocket-Key'];
$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
//hand shaking header
$upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
"Upgrade: websocket\r\n" .
"Connection: Upgrade\r\n" .
"WebSocket-Origin: $host\r\n" .
"WebSocket-Location: ws://$host:$port/demo/shout.php\r\n".
"Sec-WebSocket-Accept:$secAccept\r\n\r\n";
socket_write($client_conn,$upgrade,strlen($upgrade));
}