# pipe ## 說明: ```php void Connection::pipe(TcpConnection $target_connection) ``` ## 參數 將當前連接的數據流導入到目標連接。內置了流量控制。此方法做TCP代理非常有用 ## 范例 TCP代理 ```php <?php use Workerman\Worker; use Workerman\Connection\AsyncTcpConnection; require_once __DIR__ . '/Workerman/Autoloader.php'; $worker = new Worker('tcp://0.0.0.0:8483'); $worker->count = 12; // tcp連接建立后 $worker->onConnect = function($connection) { // 建立本地80端口的異步連接 $connection_to_80 = new AsyncTcpConnection('tcp://127.0.0.1:80'); // 設置將當前客戶端連接的數據導向80端口的連接 $connection->pipe($connection_to_80); // 設置80端口連接返回的數據導向客戶端連接 $connection_to_80->pipe($connection); // 執行異步連接 $connection_to_80->connect(); }; // 運行worker Worker::runAll(); ```