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227 lines (208 loc) · 7.65 KB
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<?php
namespace Base\Tool;
/**
* ▂▃╬▄▄▃▂▁▁
* ●●●█〓████████████▇▇▇▅▅▅▅▅▅▅▅▅▇▅▅ BUG
* ▄▅█████☆█☆█☆███████▄▄▃▂
* ███████████████████████████
* ◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤
*
* WebSocket工具类，PHP跟websocket交互咋就这么泪奔呢？
* 客户端在Public/V/Base
* 调用示例：
* new WebSocket('127.0.0.1',2416);
* @param $address 连接地址
* @param $port 端口
* @author 路漫漫
* @link [email protected]
* @version
* v2017/04/12 增加对客户端信息的转发处理以及过滤
* v2017/04/08 增加发送到指定客户端
* 改进CPU占用99%的问题
* 单例模式，感觉用处不大
* v2017/01/17 初版
*/
class WebSocket {
private $sockets;//socket数组
private $users;
private $master;
private static $obj = null;
//关闭clone
private function __clone() {}
private function __construct($address, $port){
// $cfg = Config('socket');后期读取配置host,端口
//开启端口，并监听
$this->master=$this->openSocket($address, $port);
$this->sockets=['s'=>$this->master];
$this->run();
}
public static function ins($address, $port){
if (self::$obj===null){
self::$obj = new self($address, $port);
}
return self::$obj;
}
private function run(){
while(true){
//拿所有的连接
$changes=$this->sockets;
$null = null;
socket_select($changes,$null,$null,0);
//遍历连接
foreach($changes as $sock){
if($sock==$this->master){
//接受一个Socket连接
$client=socket_accept($this->master);
//把该连接存到数组
$this->sockets[]=$client;
//给该连接一个识别符
$this->users[]=[
'socket'=>$client,
'isShakeHand'=>false
];
}else{
//从连接里拿出请求信息
$len = socket_recv($sock,$buffer,2048,0);
$user = $this->search($sock);
if($len<7){
$this->close($sock,$user);
continue;
}
if(!$this->users[$user]['isShakeHand']){
//先握手
$this->woshou($user,$buffer);
}else{
//握手后，处理请求数据
$buffer = $this->uncode($buffer);
$result = $this->notify($buffer);
if ($result === -233){
$this->close($sock,$user);
}else{
if (!$result) $result = $buffer;
$this->e($result);
//返给指定客户端
$this->send($result,$user);
//返回给所有客户端
//$this->send($result);
}
}
}
}
//避免对锁，cpu占用99%等
usleep(100);
}
}
//关闭连接
private function close($sock,$user){
// $k=array_search($sock, $this->sockets);
socket_close($sock);
unset($this->sockets[$user]);
unset($this->users[$user]);
$this->e("连接:$user 关闭");
}
//获取发送socket的客户端
private function search($sock){
foreach ($this->users as $k=>$v){
if($sock==$v['socket'])
return $k;
}
return false;
}
//建立端口监听
private function openSocket($address,$port){
$server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
//阻塞模式
// socket_set_block($server);
socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($server, $address, $port);
socket_listen($server);
$this->e('socket服务已开启 : '.date('Y-m-d H:i:s'));
$this->e('开始监听 : '.$address.' ,端口 : '.$port);
return $server;
}
//php的websocket特殊处理,比起node.js哎,说多了都是泪
private function woshou($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: " . $new_key . "\r\n\r\n";
//告诉客户端握手成功
socket_write($this->users[$k]['socket'],$new_message,strlen($new_message));
$this->users[$k]['isShakeHand']=true;
return true;
}
//帧数据解码,php在流泪
private 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 $data;
}
//帧数据编码（发回客户端用），php还是在流泪
private function code($msg){
$msg = json_encode($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*", $data);
}
private function ord_hex($data) {
$msg = '';
$l = strlen($data);
for ($i= 0; $i<$l; $i++) {
$msg .= dechex(ord($data{$i}));
}
return $msg;
}
//编码后发回到客户端
//$user为客户端识别
private function send($msg,$user=null){
$msg = $this->code($msg);
if (is_null($user)){
foreach($this->users as $v){
//发送给所有客户端
socket_write($v['socket'],$msg,strlen($msg));
}
}else{
//发送给指定客户端
socket_write($this->users[$user]['socket'],$msg,strlen($msg));
}
}
//通知对应控制器处理
private function notify($msg=''){
$info = json_decode($msg,true);
if (!isset($info['wl']) || !GetCache($info['wl'])) return -233;
if (!isset($info['data'])) return false;
$call = explode('.',$info['service']);
$parmas = $info['data'];
return eval('$c = new App\C\Home\\'.$call[0].'();return $c->'.$call[1].'($parmas);');
}
//记录到log
private function e($str){
MFLog($str,'socket');
}
}