227782 - Mozilla doesn't preserve the original "Last-Modified" date sent by the server when downloading a file

Status: VERIFIED DUPLICATE of bug 178506

(Core Graveyard :: File Handling, enhancement)

Description

[Daniel]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Firebird/0.7
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Firebird/0.7

Most servers send an HTTP header called "Last-Modified:" which informs about
when was the last time a file was modified. However, Mozilla ignores this header
and always sets the "Last modified" property of the file to be the current
system date.

Could you please add an option (maybe a hidden one, if you prefer) to preserve
the server's last-modified date?

Thank you very much.


Reproducible: Always

Steps to Reproduce:
1. Go to any webpage
2. Download any file
3. Check the file's "last-modified" date in Windows Explorer

Actual Results:  
The file's "last modified" date was incorrectly set to be the current date.

Expected Results:  
Mozilla should have preserved the file's "last-modified" date specified by the
server.

Comment 1

[Boris Zbarsky [:bzbarsky]]

We could probably do this if we could get the last-modified date off the channel
in a useful format (not as a string) or if there were an easy way to convert
said string to a date....  If there isn't, it's not worth it.

Even if we can do this, is it desirable?  Ben?  Thoughts?

Comment 2

[Felix Miata]

*** This bug has been marked as a duplicate of 178506 ***

Comment 3

[Christian :Biesinger (don't email me, ping me on IRC)]

verified