151075 - Blocked web pages in hosts file cause alert popup

Status: VERIFIED DUPLICATE of bug 28586

(Core :: Networking: HTTP, enhancement)

Description

[rbouskila]

Hi, I use the fairly prevalent method of blocking adservers by redirecting them
with the hosts file to 127.0.0.1. However, in Mozilla (all versions up to and
including 1.0, as far as I can tell), this causes an annoying alert to pop up
which says "Alert - The connection was refused when attempting to contact
foo.bar.com." Would it be possible to have some kind of detection of when a
server is referenced in the hosts file (under Win2k, it's in
$windir\system32\drivers\etc\) and suppress this popup in those cases? Thanks!

Comment 1

[Matthias Versen [:Matti]]

*** This bug has been marked as a duplicate of 28586 ***

Comment 2

[John Unruh]

Verified dupe.

Comment 3

[Matthew Gaudet (he/him) [:mgaudet]]

Attachment: Prototype of Tree Style (Lexical) Timers

This patch implements a timer tree system. The basic idea is the same as that
of a profiler, however, these timers have two distinct advantages.
1. They measure and report events non-probabalistically,
2. They may provide accuracy that can't be achieved with a sampling profiler

The result of this system is a tree of timers, such that you can see how
children contributed to the parent time:

   A (100s)
   | - B (50s)
   | - C (40s)
   | - | - D (30s)

In the above timer tree, note that the children do not all add up to the
parents: This is a side effect of missing time, which will naturally happen
where there has not been annotation with timers.

The current prototype annotates baseline compilation (this was chosen just for
ease and my own curiosity), and the timers get dumped during context
destruction with the environment variable

    DUMP_TIMERS=1

Improvements Required Before Landing:

- Currently the Persistent Timers leak.
- Currently using plain old new/delete, should be using a JS
  allocator.
- Handling Off Thread tasks.
- Improving Output (JSON?)