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php原生websocket-创新互联
class websocket
{
public $log;
public $event;
public $signets;
public $users;
public $master;
public $obj;
public function __construct($config)
{
if (substr(php_sapi_name(), 0, 3) !== 'cli') {
die("请通过命令行模式运行!");
}
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$this->event = $config['event'];
$this->log = $config['log'];
$this->obj = $config['obj'];
$this->master = $this->WebSocket($config['address'], $config['port']);
$this->sockets = array('s' => $this->master);
}
function WebSocket($address, $port)
{
$server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($server, $address, $port);
socket_listen($server);
$this->log('开始监听: ' . $address . ' : ' . $port);
return $server;
}
function run()
{
while (true) {
$changes = $this->sockets;
@socket_select($changes, $write = NULL, $except = NULL, NULL);
foreach ($changes as $sign) {
if ($sign == $this->master) {
$client = socket_accept($this->master);
$this->sockets[] = $client;
$user = array(
'socket' => $client,
'hand' => false,
);
$this->users[] = $user;
$k = $this->search($client);
$eventreturn = array('k' => $k, 'sign' => $sign);
$this->eventoutput('in', $eventreturn);
} else {
$len = socket_recv($sign, $buffer, 2048, 0);
$k = $this->search($sign);
$user = $this->users[$k];
if ($len < 7) {
$this->close($sign);
$eventreturn = array('k' => $k, 'sign' => $sign);
$this->eventoutput('out', $eventreturn);
continue;
}
if (!$this->users[$k]['hand']) {//没有握手进行握手
$this->handshake($k, $buffer);
} else {
$buffer = $this->uncode($buffer);
$eventreturn = array('k' => $k, 'sign' => $sign, 'msg' => $buffer);
$this->eventoutput('msg', $eventreturn);
}
}
}
}
}
function search($sign)
{//通过标示遍历获取id
foreach ($this->users as $k => $v) {
if ($sign == $v['socket'])
return $k;
}
return false;
}
function close($sign)
{//通过标示断开连接
$k = array_search($sign, $this->sockets);
socket_close($sign);
unset($this->sockets[$k]);
unset($this->users[$k]);
}
function handshake($k, $buffer)
{
$buf = substr($buffer, strpos($buffer, 'Sec-WebSocket-Key:') + 18);
$key = trim(substr($buf, 0, strpos($buf, "\r\n")));
$new_key = base64_encode(sha1($key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", true));
$new_message = "HTTP/1.1 101 Switching Protocols\r\n";
$new_message .= "Upgrade: websocket\r\n";
$new_message .= "Sec-WebSocket-Version: 13\r\n";
$new_message .= "Connection: Upgrade\r\n";
$new_message .= "Sec-WebSocket-Accept: " . $new_key . "\r\n\r\n";
socket_write($this->users[$k]['socket'], $new_message, strlen($new_message));
$this->users[$k]['hand'] = true;
return true;
}
function uncode($str)
{
$mask = array();
$data = '';
$msg = unpack('H*', $str);
$head = substr($msg[1], 0, 2);
if (hexdec($head{1}) === 8) {
$data = false;
} else if (hexdec($head{1}) === 1) {
$mask[] = hexdec(substr($msg[1], 4, 2));
$mask[] = hexdec(substr($msg[1], 6, 2));
$mask[] = hexdec(substr($msg[1], 8, 2));
$mask[] = hexdec(substr($msg[1], 10, 2));
$s = 12;
$e = strlen($msg[1]) - 2;
$n = 0;
for ($i = $s; $i <= $e; $i += 2) {
$data .= chr($mask[$n % 4] ^ hexdec(substr($msg[1], $i, 2)));
$n++;
}
}
return $data;
}
function code($msg)
{
$msg = preg_replace(array('/\r$/', '/\n$/', '/\r\n$/',), '', $msg);
$frame = array();
$frame[0] = '81';
$len = strlen($msg);
$frame[1] = $len < 16 ? '0' . dechex($len) : dechex($len);
$frame[2] = $this->ord_hex($msg);
$data = implode('', $frame);
return pack("H*", $data);
}
function ord_hex($data)
{
$msg = '';
$l = strlen($data);
for ($i = 0; $i < $l; $i++) {
$msg .= dechex(ord($data{$i}));
}
return $msg;
}
function idwrite($id, $t)
{//通过id推送信息
if (!$this->users[$id]['socket']) {
return false;
}//没有这个标示
$t = $this->code($t);
return socket_write($this->users[$id]['socket'], $t, strlen($t));
}
function write($k, $t)
{//通过标示推送信息
$t = $this->code($t);
return socket_write($k, $t, strlen($t));
}
function eventoutput($type, $event)
{//事件回调
call_user_func(array($this->obj, $this->event), $this, $type, $event);
}
function log($t)
{//控制台输出
if ($this->log) {
$t = $t . "\r\n";
fwrite(STDOUT, $t);
}
}
}
websocket_TEST
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