Question

如何设置套接字时间限制？ http://pastebin.com/0q3NeLAX

我尝试过socket_time_limit和其他人，但没有帮助。

我希望如果socket没有收到任何信息，它将在X秒后关闭。

function QueryMinecraft( $IP, $Port = 25565 )
{
    $Socket = Socket_Create( AF_INET, SOCK_STREAM, SOL_TCP );
    if( $Socket === FALSE || @Socket_Connect( $Socket, $IP, (int)$Port ) === FALSE )
    {
        return FALSE;
    }

    Socket_Send( $Socket, "\xFE", 1, 0 );
    $Len = Socket_Recv( $Socket, $Data, 256, 0 );
    Socket_Close( $Socket );

    if( $Len < 4 || $Data[ 0 ] != "\xFF" )
    {
        return FALSE;
    }

    $Data = SubStr( $Data, 3 );
    $Data = iconv( 'UTF-16BE', 'UTF-8', $Data );
    $Data = Explode( "\xA7", $Data );

    return Array(
        'HostName'   => SubStr( $Data[ 0 ], 0, -1 ),
        'Players'    => isset( $Data[ 1 ] ) ? IntVal( $Data[ 1 ] ) : 0,
        'MaxPlayers' => isset( $Data[ 2 ] ) ? IntVal( $Data[ 2 ] ) : 0
    );
}

Answer 1

我不会为此使用套接字扩展，我只将其用于使用fsockopen()无法完成的高级套接字操作。原因是套接字扩展并不总是可用，而fsockopen()通常是。

以下是我用数据接收超时编写代码的方法：

function QueryMinecraft( $IP, $Port = 25565 )
{

    // Seconds to wait for a successful connection
    $connectTimeout = 5;
    // Seconds to wait for data
    $receiveTimeout = 5;

    $Socket = fsockopen($IP, $port, $errNo, $errStr, $connectTimeout);

    if( !$Socket || !stream_set_timeout( $Socket, $receiveTimeout ) )
    {
        return FALSE;
    }

    fwrite( $Socket, "\xFE" );
    $Data = fread( $Socket, 256 );
    fclose( $Socket );

    if( strlen( $Data ) < 4 || $Data[ 0 ] != "\xFF" )
    {
        return FALSE;
    }

    $Data = SubStr( $Data, 3 );
    $Data = iconv( 'UTF-16BE', 'UTF-8', $Data );
    $Data = Explode( "\xA7", $Data );

    return Array(
        'HostName'   => SubStr( $Data[ 0 ], 0, -1 ),
        'Players'    => isset( $Data[ 1 ] ) ? IntVal( $Data[ 1 ] ) : 0,
        'MaxPlayers' => isset( $Data[ 2 ] ) ? IntVal( $Data[ 2 ] ) : 0
    );

}

如何为套接字设定时间限制？

1 个答案: