196120 - "Connection refused" errors not working in <IFRAME SRC=>

Status: VERIFIED WONTFIX

(Core :: DOM: Navigation, defect)

Description

[benc]

Mozilla 1.3b, Win98+Mac OS X.

While working on "ftp buster", I found that sites that error w/ "connection
refused" through normal usage (like URL bar or links...) silently fail w/ no
error and no content. The status bar does say "Finished FTP transaction".

I did a little bit of hacking, and found that the problem also affeccts HTTP URL
that cause the same error.

I'm not sure if this is docshell or not, I've already searched necko+docshell
components for IFRAME and SRC bugs.

I'll upload the two sample files I created.

Comment 1

[benc]

Attachment: ftp URL in IFRAME

Comment 2

[benc]

Attachment: http URL in IFRAME

Comment 3

[Boris Zbarsky [:bzbarsky]]

Um.. for an iframe, we should currently do nothing. Once we have error page
support, we should show an error page for FTP errors.  Is that testcase really
testing the bug you're trying to test?

Comment 4

[benc]

yes. I've got the automated loader tool that is automated, but doesn't provide
error messages. it uses IFRAME.

Comment 5

[benc]

I got the version number wrong, I was using Mozilla 1.3a because i trying to
dodge the error message regressions found in:

http://www.mozilla.org/quality/networking/testing/results/mozilla1.3b/coreresults.html

Most were caused by bug 189965.

I'll be looking at a newer build soon, but I needed at least something to
reproduce and report against.

Comment 6

[Doug Turner (:dougt)]

ben - what are the steps to reproduce this bug?

Comment 7

[Doug Turner (:dougt)]

to darin.

Comment 8

[Darin Fisher]

benc: i think this is by design.  otherwise, we'd get an error message
potentially for each frame (assuming toplevel frameset/document loaded fine). 
adam disabled this if iirc.  the solution is to use error pages.  i'd recommend
WONTFIX.

Comment 9

[benc]

darin: Error pages is an entirely different can of worms, I guess we've entered
"design by bug report". Somewhere along the way, everyone has made a case for
every single URL entry point to display or not an error message. I just want a
list of what the current expected behavior is so I can run my tests and write
bugs against the diff.

So this would be docshell? I'll be happy to send it where it belongs.

dougt:
This happens if ftp buster is configured w/ bad URLs (see description). You can
directly reproduce this by clicking on either of the ftp and http examples I
enclosed in #1 and #2.

Comment 10

[Adam Lock]

This is by design. Common error messages are suppressed for IFRAMEs because
links are so frequently broken that the error popups become very annoying. I
can't remember the bug number, but the code that does it is here:

http://lxr.mozilla.org/seamonkey/source/docshell/base/nsWebShell.cpp#930

Note this is only for error popups. When error pages are enabled, the error is
shown in the iframe.

Comment 11

[Darin Fisher]

marking WONTFIX

Comment 12

[benc]

VERIFIED.

Comment 13

[benc]

*** Bug 143750 has been marked as a duplicate of this bug. ***

Comment 14

[benc]

*** Bug 184841 has been marked as a duplicate of this bug. ***