php socket如何发送

<?php date_default_timezone_set("PRC"); ?><?phpclass WS {	var $master;	var $sockets = array();	var $debug = false;	var $handshake = false;	function __construct($address, $port){		$this->master=socket_create(AF_INET, SOCK_STREAM, SOL_TCP)     or die("socket_create() failed");		socket_set_option($this->master, SOL_SOCKET, SO_REUSEADDR, 1)  or die("socket_option() failed");		socket_bind($this->master, $address, $port)                    or die("socket_bind() failed");		socket_listen($this->master,20)                                or die("socket_listen() failed");				$this->sockets[] = $this->master;		$this->say("Server Started : ".date('Y-m-d H:i:s'));		$this->say("Listening on   : ".$address." port ".$port);		$this->say("Master socket  : ".$this->master."\n");				while(true){			$socketArr = $this->sockets;			$write = NULL;			$except = NULL;			socket_select($socketArr, $write, $except, NULL);  //自动选择来消息的socket 如果是握手 自动选择主机			foreach ($socketArr as $socket){				if ($socket == $this->master){  //主机					$client = socket_accept($this->master);					if ($client < 0){						$this->log("socket_accept() failed");						continue;					} else{						$this->connect($client);					}				} else {					$this->log("^^^^");					$bytes = @socket_recv($socket,$buffer,2048,0);					$this->log("^^^^");					if ($bytes == 0){						$this->disConnect($socket);					}					else{						if (!$this->handshake){							$this->doHandShake($socket, $buffer);						}						else{							$buffer = $this->decode($buffer);							$this->send($socket, $buffer); 						}					}				}			}		}	}		function send($client, $msg){		$this->log("> " . $msg);		$msg = $this->frame($msg);		socket_write($client, $msg, strlen($msg));		$this->log("! " . strlen($msg));	}	function connect($socket){		array_push($this->sockets, $socket);		$this->say("\n" . $socket . " CONNECTED!");		$this->say(date("Y-n-d H:i:s"));	}	function disConnect($socket){		$index = array_search($socket, $this->sockets);		socket_close($socket);		$this->say($socket . " DISCONNECTED!");		if ($index >= 0){			array_splice($this->sockets, $index, 1); 		}	}	function doHandShake($socket, $buffer){		$this->log("\nRequesting handshake...");		$this->log($buffer);		list($resource, $host, $origin, $key) = $this->getHeaders($buffer);		$this->log("Handshaking...");		$upgrade  = "HTTP/1.1 101 Switching Protocol\r\n" .					"Upgrade: websocket\r\n" .					"Connection: Upgrade\r\n" .					"Sec-WebSocket-Accept: " . $this->calcKey($key) . "\r\n\r\n";  //必须以两个回车结尾		$this->log($upgrade);		$sent = socket_write($socket, $upgrade, strlen($upgrade));		$this->handshake=true;		$this->log("Done handshaking...");		return true;	}	function getHeaders($req){		$r = $h = $o = $key = null;		if (preg_match("/GET (.*) HTTP/"              ,$req,$match)) { $r = $match[1]; }		if (preg_match("/Host: (.*)\r\n/"             ,$req,$match)) { $h = $match[1]; }		if (preg_match("/Origin: (.*)\r\n/"           ,$req,$match)) { $o = $match[1]; }		if (preg_match("/Sec-WebSocket-Key: (.*)\r\n/",$req,$match)) { $key = $match[1]; }		return array($r, $h, $o, $key);	}	function calcKey($key){		//基于websocket version 13		$accept = base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));		return $accept;	}	function decode($buffer) {		$len = $masks = $data = $decoded = null;		$len = ord($buffer[1]) & 127;		if ($len === 126) {			$masks = substr($buffer, 4, 4);			$data = substr($buffer, 8);		} 		else if ($len === 127) {			$masks = substr($buffer, 10, 4);			$data = substr($buffer, 14);		} 		else {			$masks = substr($buffer, 2, 4);			$data = substr($buffer, 6);		}		for ($index = 0; $index < strlen($data); $index++) {			$decoded .= $data[$index] ^ $masks[$index % 4];		}		return $decoded;	}	function frame($s){		$a = str_split($s, 125);		if (count($a) == 1){			return "\x81" . chr(strlen($a[0])) . $a[0];		}		$ns = "";		foreach ($a as $o){			$ns .= "\x81" . chr(strlen($o)) . $o;		}		return $ns;	}		function say($msg = ""){		echo $msg . "\n";	}	function log($msg = ""){		if ($this->debug){			echo $msg . "\n";		} 	}}	$wwss=new WS('localhost', 4000);

$client = socket_accept($this->master);//27行