164988 - DNS: Interrupted page loads can cause blocks

Status: VERIFIED DUPLICATE of bug 164593

(Core :: Networking, defect)

Description

[Sean Harding]

(From my comment in Bug 146769):

There seems to be a small window of time (in all likelihood, during the DNS
resolution) in which hitting "stop" for a page load will make all Mozilla DNS
lookups block for some time. For example, I just had the following happen:

1. Type http://www.cnn.com/ in the location bar and hit enter
2. Almost immediately hit "stop" (I suspect, but have not confirmed, that this
must happen before the DNS lookup has completed)
3. All subsequent attempted page loads which required new (non-cached) DNS
information hung for a couple of minutes. Then everything went back to normal.
Additional page loads from sites I'd already been at (thus, DNS info was
probably cached) worked fine. nslookup on the hostnames for the blocked load
attempts also worked fine.

I see this a couple of times a week on average. Currently I'm using build
2002082608 on FreeBSD, but I've seen this (or similar) problems on builds for a
long time and also on MacOS X.

Comment 1

[benc]

I've seen this for a while on all platforms.

Comment 2

[Mats Palmgren (inactive)]

I wonder if this the same as what I saw in bug 153589.

Comment 3

[nivtwig]

I have something much worse, and similar to this. 
Interner Explorer doesn't have any of the problems when I check it at the same 
time with mozilla.
I am working inside a company firewall. This is not the firewall since IE works 
fine.
When I try to access company sites(intranet) there is no problem.
When I try to access all outside sites(internet) mozilla gives a status-bar 
message of the type "Resolving host HOSTNAME..." but doesn't resolve any site. 

The following actions didn't help: clearing history, clearing disk and memory 
cache, restarting mozilla, and reinstalling a newer version!!!
I have the problem for several days(everything worked fine before)
I am using build 2002092308

Are there any workaround steps that someboy can suggest (apart from what I 
tried)?

Comment 4

[benc]

Niv: new bug please.

Comment 5

[Doug Turner (:dougt)]

gordon, do you see this?

Comment 6

[gordon]

*** This bug has been marked as a duplicate of 164593 ***

Comment 7

[Tom Everingham]

verified duplicate