workerman作为http服务器，实现文件下载

while (true)
{
    $range = array($i,$i + (10*1024));
    $ret = $client->getObject('/test.rar', $range);

    echo $ret;
    ob_flush();
    flush();
    $i = $i + (10*1024) + 1;
    $flag = $size - $i;

    if ($flag <= 0 )
    {
        break;
    }
}

    $buffer .= $ret;

    $i = $i + (10*1024) + 1;
    $flag = $size - $i;

    if ($flag <= 0 )
    {
        break;
    }
}