Bug 20407 – Safari/Webkit doesn't support Non US-ASCII filenames in Content-Disposition header

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: WebCore Misc.

[Robbie Paplin]

As per RFC 2184 & 2231, if one wants the web browser to properly display a filename that contains Unicode characters in the File Download dialog box, you must encode the filename as URL-encoded UTF-8 in the Content-Disposition field.

Let's say I want to download an image named 2008年8月8日.jpg

The server should send down the following header

Content-Disposition: attachment; filename*="2008%e5%b9%b48%e6%9c%888%e6%97%a5.jpg"

In Firefox it works as expected (Note: it appears Firefox supports multiple ways of encoding international filenames. For example, the following header also gives the desired result.

Content-Disposition: attachment; filename="2008\345\271\2648\346\234\2108\346\227\245.jpg"

In IE, if you omit it the asterisk after the filename filed it works (like so)..

Content-Disposition: attachment; filename="2008%e5%b9%b48%e6%9c%888%e6%97%a5.jpg"

I've yet to see this work in Safari using any web application (I've tried Gmail, Hotmail, Windows Live Skydrive) or any of the above methods.

[Mark Rowe (bdash)]

*** This bug has been marked as a duplicate of 15287 ***