lynx-dev bug: refresh and images

[Carlton Anderson]

Bug report
Date: August 31, 2003
Version: Lynx 2.8.5dev16

Lynx has a bug in dealing with dynamically
generated images. If a web author creates
a PHP file that outputs an image, and if
that PHP script uses an HTTP refresh line
in the HTTP header, Lynx prepends the image
binary with words like this:

Refresh: 5 seconds <a href="http://localhost/index.html";>
http://localhost/index.html</a><br>

Since this information is prepended to the
image data, the image is essentially ruined. 
Here is an example:

<?php
error_reporting(E_ALL);

$svr = & $HTTP_SERVER_VARS;
header('Content-Type: image/png');
header('Content-Disposition: attachment; filename=afile.bin');
header("Refresh: 5; URL=http://$svr[HTTP_HOST]/index.html";);
passthru('cat ../homeimage.png');
?>

This is a bug. A better behavior for Lynx would be
for it to prepend the text only when the HTTP body
is of type text/html. 


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