从同一浏览器和相同的PHP脚本下载php同步文件

Question

<?php

$filename= './get/me/me_'.rand(1,100).'.zip';

header("Content-Length: " . filesize($filename));
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename=foo.zip');

readfile($filename);
?>

Hi, I have this simple code that forces a random file download, my problem is that if I call the script two or more times from the same browser the second download won't start until the first is completed or interrupted. Thus I can download only one file per time. Do you have any clue?

Answer 1

just guesses. There could be different reasons.

first, your server could restrict the number of connections or childs in paralell. But I guess this sin't the problem

second, it is more likely that the client restricts the number of connections. The "normal" browser opens only two connections at a time to a certain server. Modern browsers allow up to 8 (?) connections. This is a simple restriction in order to avoid problems which could occur with slow servers.

One workaround could be to place every download on a "virtual" subdomain.

give it a try!