<?phPRequire_once 'CRC16.php';/*----------------------------- | 向服务器发送数据包 ------------------------------*/class Server {//发送数据包public static function sendPacket($packet, $host, $port) {$protocol = 'tcp';$get_prot = getprotobyname ( $protocol );//创建socket$socket = socket_create ( AF_INET, SOCK_STREAM, $get_prot );//建立连接$conn = socket_connect ( $socket, $host, $port );if(!$conn){socket_close($socket);exit("socket connect failed!");}$buffer = @socket_read($socket, 9, PHP_NORMAL_READ);$crcCode = (ord($buffer[7])<<8)+ord($buffer[8]);$len = strlen($packet);$newpacket = CRC16::encode($packet, $crcCode,4);socket_send ( $socket, $newpacket, $len, 0 );//等待接受$head = @socket_read($socket,4,PHP_NORMAL_READ);$len = (ord($head[0])<<24)+(ord($head[1])<<16)+(ord($head[2])<<8)+ord($head[3]);$content = @socket_read($socket,$len-4,PHP_NORMAL_READ);socket_close ( $socket );return substr($content,3);}public static function packet($group,$cmd,$message){$size = strlen($message)+8;$str = '';$str .= self::writeInt($size);$str .= self::writeByte(0);$str .= self::writeByte($group);$str .= self::writeByte($cmd);$str .= self::writeByte(1);$str .= $message;return $str;}//写进2个byte的数据private static function writeShort($s) {return pack ( "n", $s );}//写进4个byte的数据private static function writeInt($N) {return pack ( "N", $N );}//写进1个byte的数据private static function writeByte($b) {return pack ( "c", $b );}}

因为个人服务端连接之后，会分配一个crcCode校验码，发送的消息需要进行crc16的加密（其实很简单的，保持点神秘感），所以先等待接受固定长度来获得crcCode，然后发送请求后，等待接受数据包，并返回。

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