connect 方法

void AsyncTcpConnection::connect()

執行異步連接操作。該方法將立即返回。

注意：如需設置異步連接的onError回調，應該在connect執行之前設置，否則onError回調可能無法被觸發，例如下面的例子onError回調可能無法觸發，無法捕獲異步連接失敗事件。

$connection = new AsyncTcpConnection('tcp://baidu.com:81');
// 執行連接的時候還沒設置onError回調
$connection->connect();
$connection->onError = function($connection, $err_code, $err_msg)
{
    echo "$err_code, $err_msg";
};

參數

無參數

返回值

無返回值

示例 Mysql代理

use Workerman\Worker;
use Workerman\Connection\AsyncTcpConnection;
use Workerman\Connection\TcpConnection;
require_once __DIR__ . '/vendor/autoload.php';

// 真實的mysql地址，假設這裡是本機3306端口
$REAL_MYSQL_ADDRESS = 'tcp://127.0.0.1:3306';

// 代理監聽本地4406端口
$proxy = new Worker('tcp://0.0.0.0:4406');

$proxy->onConnect = function(TcpConnection $connection)
{
    global $REAL_MYSQL_ADDRESS;
    // 異步建立一個到實際mysql伺服器的連接
    $connection_to_mysql = new AsyncTcpConnection($REAL_MYSQL_ADDRESS);
    // mysql連接發來數據時，轉發給對應客戶端的連接
    $connection_to_mysql->onMessage = function(AsyncTcpConnection $connection_to_mysql, $buffer)use($connection)
    {
        $connection->send($buffer);
    };
    // mysql連接關閉時，關閉對應的代理到客戶端的連接
    $connection_to_mysql->onClose = function(AsyncTcpConnection $connection_to_mysql)use($connection)
    {
        $connection->close();
    };
    // mysql連接上發生錯誤時，關閉對應的代理到客戶端的連接
    $connection_to_mysql->onError = function(AsyncTcpConnection $connection_to_mysql)use($connection)
    {
        $connection->close();
    };
    // 執行異步連接
    $connection_to_mysql->connect();

    // 客戶端發來數據時，轉發給對應的mysql連接
    $connection->onMessage = function(TcpConnection $connection, $buffer)use($connection_to_mysql)
    {
        $connection_to_mysql->send($buffer);
    };
    // 客戶端連接斷開時，斷開對應的mysql連接
    $connection->onClose = function(TcpConnection $connection)use($connection_to_mysql)
    {
        $connection_to_mysql->close();
    };
    // 客戶端連接發生錯誤時，斷開對應的mysql連接
    $connection->onError = function(TcpConnection $connection)use($connection_to_mysql)
    {
        $connection_to_mysql->close();
    };

};
// 運行worker
Worker::runAll();

測試

mysql -uroot -P4406 -h127.0.0.1 -p

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 25004
Server version: 5.5.31-1~dotdeb.0 (Debian)

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