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Potential regression on v18 (internet connection behind a proxy)

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January 9, 2013 - 5:41am
#1
Ginko_Aloe
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Joined: 2013-01-09 04:53
Potential regression on v18 (internet connection behind a proxy)

Hi,

I may have experienced a regression after the v18 upgrade : i'm actually behind an enterprise Internet proxy. v17 and previous versions managed to connect properly using default system Internet proxy settings but apparently, v18 can't do the same.

Since setting manually proxy settings don't solve the problem (this proxy is pretty weird and do block a lot of stuff), I had to downgrade to v17. And it actually works.

Since I can't install anything on the laptop, I can't tell you if the bug is in Firefox v18 or in the portable edition of FFv18.

Hope you can solve it if this turns to be a real bug.

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January 9, 2013 - 10:52am
Grantwhy
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Joined: 2010-07-28 22:05
Mozilla did fix something in FF18.0 about proxies ?

well, looking at the Change Log for Firefox 18.0, it does say

FIXED: Improved responsiveness for users on proxies

https://www.mozilla.org/en-US/firefox/18.0/releasenotes/

from one of the blogs on the Firefox site

We have received a lot of strange complaints about Firefox network performance that we could never reproduce. Turned out this was because none of us used proxies. Patrick McManus discovered a lot of synchronous proxy and DNS code in our network stack.

Fix for this should also improve performance for people without proxies since proxy-autodetection code was also doing main thread IO. As a result all of us replacing sync APIs with async ones all of the existing proxy-related addons will have to be updated. Patrick is reaching out to addon authors to make sure addons are updated in time for the next release.

so it wouldn't surprise me if it is a change made in Firefox that is causing your problem.

It probably wouldn't hurt to head over to the Firefox website and let them know?

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January 17, 2013 - 12:23am
(Reply to #2)
Grantwhy
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Last seen: 9 months 1 week ago
Joined: 2010-07-28 22:05
looks like it might be a FF bug

FireFox 18.0.1 is coming out soon, and according to a story on the ghacks.net site there are a couple of bug being fixed that might be causing your problem.

http://www.ghacks.net/2013/01/16/firefox-18-0-1-coming-soon/

One major bug addresses issues with NTLM (NT Lan Manager) and some SSL proxies which prevents that users can access the Internet, the other fixes a bug in proxy auto config which may not work properly in the current stable version of Firefox.

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