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server.php
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server.php
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<?php
/**
* Created by PhpStorm.
* User: imjunera
* Date: 2015-06-19
* Time: 오후 11:25
*/
Class WebSocket {
private $host, $port;
private $serverSocket, $tSocketArray;
private $clients = array(), $clientsInfo = array();
private $users = array();
private $handShakeResponse = ["HTTP/1.1 101 Switching Protocols", "Upgrade: websocket", "Connection: Upgrade", "key", "\r\n"];
function __construct($port) {
$this->host = "127.0.0.1";
$this->port = $port;
$this->createSocket();
}
private function createSocket() {
$this->serverSocket = socket_create(AF_INET, SOCK_STREAM, 0);
socket_bind($this->serverSocket, 0, $this->port) or die("bind error !!");
socket_listen($this->serverSocket);
$this->waitSocket();
}
private function waitSocket() {
while(true) {
$this->tSocketArray = array_merge(array($this->serverSocket), $this->clients);
if(socket_select($this->tSocketArray, $ttw = null, $tte = null, 10)) {
foreach($this->tSocketArray as $eachSocket) {
if($eachSocket == $this->serverSocket) {
echo "new user !!\n";
$_socket = socket_accept($this->serverSocket);
socket_getpeername($_socket, $_ip, $_port);
$this->clients[$_socket] = $_socket;
$this->clientsInfo[$_socket] = array("ip" => $_ip, "port" => $_port);
} else {
$msg = socket_read($eachSocket, 10000);
$this->msgParser($eachSocket, $msg);
}
}
}
}
}
private function msgParser(&$eachSocket, $msg) {
if(substr($msg, 0, 3) == "GET") {
$this->doAuthWebSocket($eachSocket, $msg);
} else {
//decode msg
$dm = $this->decodeMsg($msg);
if($dm != null && substr($dm,0,1) == 'm') {
echo $dm;
foreach($this->clients as $k => $v) {
$magic = chr(0x81);
$length = chr(strlen($dm));
socket_write($v, $magic.$length.$dm);
}
} else if($dm != null && substr($dm, 0,1) == 'n') {
$this->users[$eachSocket] = substr($dm, 1, strlen($dm));
foreach($this->clients as $k => $v) {
$magic = chr(0x81);
$length = chr(strlen($dm));
socket_write($v, $magic.$length.$dm);
}
} else {
$u = $this->users[$eachSocket];
unset($this->clients[$eachSocket]);
unset($this->clientsInfo[$eachSocket]);
unset($this->users[$eachSocket]);
socket_close($eachSocket);
foreach($this->clients as $k => $v) {
$magic = chr(0x81);
$dm = "b".$u;
$length = chr(strlen($dm));
socket_write($v, $magic.$length.$dm);
}
}
}
}
private function doAuthWebSocket(&$eachSocket, $msg) {
$acceptKey = $this->getAcceptKey($msg);
$this->handShakeResponse[3] = "Sec-WebSocket-Accept: ".$acceptKey;
$acceptData = join("\r\n", $this->handShakeResponse);
print_r($acceptData);
socket_write($eachSocket, $acceptData);
}
private function getAcceptKey($msg) {
$msgArr = explode("\r\n", $msg);
$locationKey = preg_grep("~Sec-WebSocket-Key:~", $msgArr);
$key = explode(" ",array_merge($locationKey)[0])[1];
$key .= "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
$key = sha1($key);
$acceptKey = "";
for($i=0; $i<strlen($key); $i+=2) {
$t = $key[$i].$key[$i+1];
$acceptKey .= chr("0x".$t);
}
return base64_encode($acceptKey);
}
private function decodeMsg($_msg) {
$msg = bin2hex($_msg);
$maskKey[0] = $msg[4].$msg[5];
$maskKey[1] = $msg[6].$msg[7];
$maskKey[2] = $msg[8].$msg[9];
$maskKey[3] = $msg[10].$msg[11];
$len = 0;
$originalMsg = "";
for($i=12; $i<strlen($msg); $i+=2) {
$t = $msg[$i].$msg[$i+1];
$originalMsg .= hex2bin($t) ^ hex2bin($maskKey[$len%4]);
$len++;
}
return $originalMsg;
}
}
new WebSocket(1237);