438471 - getResponseHeader returns undefined for a "header" whose value is a blank string

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Himanshu]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14

Steps to repro:

1. From the server side send a header in the response containing a blank value. the back end I use is Java 5 based, JSP, Struts 2.0 and Tomcat 6.0. I am also using Ajax via Yahoo user Interface.

2. try to execute JS method getResponseHeader("aboveheadername") on xmlhttprequest obj and check out the value in console (firebug) or an alert stmt. it appears as undefined. the header exists and its actual value i.e is a blank should be shown.

Reproducible: Always

Steps to Reproduce:
1.see details
2.
3.
Actual Results:  
getResponseHeader returns undefined

Expected Results:  
a blank string

Comment 1

[Himanshu]

a useful link: http://lxr.mozilla.org/mozilla/source/content/base/public/nsIXMLHttpRequest.idl#148

Comment 2

[Himanshu]

In fact as the above link suggests, getRespHeader must return null for the value of a header that does not exist, instead it seems to be returning undefined. this method is wrongly implemented

Comment 3

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.9 or later in safe mode? If not, please close. These links can help you in your testing.
http://support.mozilla.com/kb/Safe+Mode
http://support.mozilla.com/kb/Managing+profiles

Comment 4

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.10 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.