PHP的socket连接到服务端模版
在整理新框架的时候,发现对于一些缓存数据,需要对外的接口访问,而比较方便的是php的接口,所以临时研究了下php如何连接java服务端。
先贴上代码:
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<?php require_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。