417841 - setRequestHeader does not overwrite default value of Cache-Control: no-cache on post requests

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Rune Jensen]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; da; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; da; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12

Trying to cache a POST response from an XMLHttpRequest, but can not overwrite default value of Cache-Control: no-cache. The same is true for Pragma: no-cache.
It ends up something like Cache-Control: erik, no-cache
This is only true for POST _not_ for GET.

I have deactivated all of my extensions except firebug. 

var httpRequest = new XMLHttpRequest();
httpRequest.open('POST', 'search/cards', true);
httpRequest.setRequestHeader('Cache-Control', erik');
httpRequest.send(...);

Here are some samples of the request and the response headers from Firebug:

Response Headers
Date	Sat, 16 Feb 2008 00:31:12 GMT
Server	Apache/2.2.6 (Win32) DAV/2 mod_ssl/2.2.6 OpenSSL/0.9.8e mod_autoindex_color PHP/5.2.4
X-Powered-By	PHP/5.2.4
Expires	Sun, 17 Feb 2008 00:31:13 GMT
Cache-Control	max-age=86400
Content-Length	6463
Keep-Alive	timeout=5, max=98
Connection	Keep-Alive
Content-Type	text/html

Request Headers
Host	localhost
User-Agent	Mozilla/5.0 (Windows; U; Windows NT 6.0; da; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12
Accept	text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language	da,en-us;q=0.7,en;q=0.3
Accept-Encoding	gzip,deflate
Accept-Charset	ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive	300
Connection	keep-alive
Content-Type	application/x-www-form-urlencoded
X-Requested-With	XMLHttpRequest
Cache-Control	erik, no-cache
Referer	http://localhost/magic/
Content-Length	62
Cookie	displayStyle=list; PHPSESSID=f5aaddfd801a58250209b204b9caac53
Pragma	no-cache

Reproducible: Always

Steps to Reproduce:
1.
2.
3.

Comment 1

[WADA:World Anti-bad-Duping Agency]

> httpRequest.setRequestHeader('Cache-Control', erik');
> Cache-Control    erik, no-cache

XMLHttpRequest SPEC says;
> http://www.w3.org/TR/XMLHttpRequest/#setrequestheader
> setRequestHeader(header, value), method
>(snip)
>   The setRequestHeader() method appends a value if the HTTP header given
>   as argument is already part of the list of request headers.

Sorry but I couldn't find method to remove (a) a HTTP header from list of request headers, or (b) some values from a HTTP header in the list of request headers.

Comment 2

[Tyler Downer [He/Him]]

This bug was originally reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.6 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME
http://www.mozilla.com
http://support.mozilla.com/kb/Managing+profiles
http://support.mozilla.com/kb/Safe+mode

Comment 3

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.8 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.