WebSocket

server.php

<?php
include 'websocket.php';
 
$config=array(
  'address'=>'10.180.55.23',
  'port'=>'8000',
  'event'=>'WSevent',//回调函数的函数名
  'log'=>true,
);
$websocket = new websocket($config);
$websocket->run();
function WSevent($type,$event){
  global $websocket;
    if('in'==$type){
      $websocket->log('客户进入id:'.$event['k']);
    }elseif('out'==$type){
      $websocket->log('客户退出id:'.$event['k']);
    }elseif('msg'==$type){
      $websocket->log($event['k'].'消息:'.$event['msg']);
      roboot($event['sign'],$event['msg']);
    }
}
 
function roboot($sign,$t){
  global $websocket;
  switch ($t)
  {
  case 'hello':
    $show='hello,GIt @ OSC';
    break;  
  case 'name':
    $show='Robot';
    break;
  case 'time':
    $show='当前时间:'.date('Y-m-d H:i:s');
    break;
  case '再见':
    $show='( ^_^ )/~~拜拜';
    $websocket->write($sign,'Robot:'.$show);
    $websocket->close($sign);
    return;
    break;
  case '天王盖地虎':
    $array = array('小鸡炖蘑菇','宝塔震河妖','粒粒皆辛苦');
    $show = $array[rand(0,2)];
    break;
  default:
    $show='( ⊙o⊙?)不懂,你可以尝试说:hello,name,time,再见,天王盖地虎.';
  }
  $websocket->write($sign,'Robot:'.$show);
}
?>

websocket.php

<?php
header("Content-Type: text/html;charset=utf-8");
/*
创建类websocket($config);
$config结构:
$config=array(
  'address'=>'192.168.0.200',//绑定地址
  'port'=>'8000',//绑定端口
  'event'=>'WSevent',//回调函数的函数名
  'log'=>true,//命令行显示记录
);
 
回调函数返回数据格式
function WSevent($type,$event)
 
$type字符串 事件类型有以下三种
in  客户端进入
out 客户端断开
msg 客户端消息到达
均为小写
 
$event 数组
$event['k']内置用户列表的userid;
$event['sign']客户标示
$event['msg']收到的消息 $type='msg'时才有该信息
 
方法:
run()运行
search(标示)遍历取得该标示的id
close(标示)断开连接
write(标示,信息)推送信息
idwrite(id,信息)推送信息
 
属性:
$users 客户列表
结构:
$users=array(
[用户id]=>array('socket'=>[标示],'hand'=[是否握手-布尔值]),
[用户id]=>arr.....
)
*/
 
class websocket{
    public $log;
    public $event;
    public $signets;
    public $users;  
    public $master; 
    public function __construct($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'];
        $this->master=$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($this->event,$type,$event);
    }
    function log($t){//控制台输出
      if($this->log){
        $t=$t."\r\n";
        fwrite(STDOUT, iconv('utf-8','gbk//IGNORE',$t));
      }
    }
}

index.html

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>websocket_TEST</title>
</head>
<body>
<textarea class="log" style="width: 100%; height: 500px;">
=======websocket======
</textarea>
<input type="button" value="连接" onClick="link()"> 
<input type="button" value="断开" onClick="dis()">
<input type="text" id="text">
<input type="button" value="发送" onClick="send()">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script>
function link(){
  var url='ws://10.180.55.23:8000';
  socket=new WebSocket(url);
  socket.onopen=function(){log('连接成功')}
  socket.onmessage=function(msg){log('获得消息:'+msg.data);console.log(msg);}
  socket.onclose=function(){log('断开连接')}
}
function dis(){
  socket.close();
  socket=null;
}
function log(var1){
  $('.log').append(var1+"\r\n");
}
function send(){
  socket.send($('#text').attr('value'));
}
function send2(){
  var json = JSON.stringify({'type':'php','msg':$('#text2').attr('value')})
  socket.send(json);
}
</script>
</body>
</html>

启动

• 配置好 IP
• 终端启动 php server.php
• 浏览器打开 index.html

等有时间研究下 PHP 代码