PHP Simulate a slow download of a file; curl -o /dev/null

Content

<?php # server.php $content_length_bytes = 1e6; // 1 megabyte. $content_length_bytes *= 3;   // Send binary file header. header('Content-Type: application/octet-stream'); header('Content-Length: ' . $content_length_bytes); header('Content-Disposition: attachment; filename="somefile.bin"');   $bytes = 1000; $length = $content_length_bytes / $bytes; $str = str_repeat('.', $bytes); $micro_seconds = 20000;   for ($i = 0; $i < $length; $i++) {     echo $str;       // Slow the download.     usleep($micro_seconds); }

Start the server.

$ php -S 127.0.0.1:8080 server.php

Show the download progress including Total, Received, Xferd, Average Dload, Speed Upload, Time Total, Time Spent, Time Left, Current Speed:

curl -i http://127.0.0.1:8080/server.php -o /dev/null