# frame協議 # frame協議 ```php workerman定義了一種叫做frame的協議，協議格式為 ```總包長+包體```，其中包長為4字節網絡字節序的整數，包體可以是普通文本或者二進制數據。 以下是frame協議實現。 ```php class Frame { public static function input($buffer ,TcpConnection $connection) { if(strlen($buffer)<4) { return 0; } $unpack_data = unpack('Ntotal_length', $buffer); return $unpack_data['total_length']; } public static function decode($buffer) { return substr($buffer, 4); } public static function encode($buffer) { $total_length = 4 + strlen($buffer); return pack('N',$total_length) . $buffer; } } ``` ```