1714546 - Captive Portal Detection showing up when no CP

Status: RESOLVED INVALID

(Core :: Networking, defect)

Description

[iampowerslave]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0

Steps to reproduce:

Opened Firefox

Actual results:

Showed a bar on top saying that I should login to a Captive Portal, clicked and sent me here https://support.mozilla.org/en-US/kb/captive-portal

Expected results:

Nothing
I'm in my home network as usual and it never happened before it updated to 89.0
I do have a proxy and I do have a Firewall and it's config never changed for years. But now FF is giving me this message which I can't dismiss forever.

Comment 1

[iampowerslave]

Attachment: Log in to network after every FF startup even if there are other windows browsing

Comment 2

[Valentin Gosu [:valentin] (he/him)]

Thank you for the report.
Could you possibly record some HTTPS logs for us, using these instructions? https://firefox-source-docs.mozilla.org/networking/http/logging.html
Thanks!

Comment 3

[iampowerslave]

Attachment: log.txt-main.11412.zip

Comment 4

[iampowerslave]

(In reply to Valentin Gosu [:valentin] (he/him) from comment #2)

Thank you for the report.
Could you possibly record some HTTPS logs for us, using these instructions? https://firefox-source-docs.mozilla.org/networking/http/logging.html
Thanks!

Hi!

I have added log.txt-main.11412.zip to the case.

Are these files enough?

Regards,

David

Comment 5

[Valentin Gosu [:valentin] (he/him)]

Thanks for the log. It only shows one of the captive portal attempts, and the channel seems to be OK.
Could you add CaptivePortalService:5 to the list of logged modules and try again?
Thanks!

Comment 6

[iampowerslave]

Attachment: log.txt-main.9336.zip

New log with the requested changes

Comment 7

[iampowerslave]

(In reply to Valentin Gosu [:valentin] (he/him) from comment #5)

Thanks for the log. It only shows one of the captive portal attempts, and the channel seems to be OK.
Could you add CaptivePortalService:5 to the list of logged modules and try again?
Thanks!

Hi!

Just uploaded a new log file (log.txt-main.9336.zip) with those changes included

Regards,

David

Comment 8

[Valentin Gosu [:valentin] (he/him)]

Unfortunately the log misses most the CP attempts, and only shows the last one which gets aborted.
Could you try with the environment variables?
https://firefox-source-docs.mozilla.org/networking/http/logging.html#windows
Maye sure to add CaptivePortalService:5 to MOZ_LOG=

Thanks!

Comment 9

[iampowerslave]

Attachment: log.txt.child-1.moz_log.zip

Comment 10

[iampowerslave]

(In reply to Valentin Gosu [:valentin] (he/him) from comment #8)

Unfortunately the log misses most the CP attempts, and only shows the last one which gets aborted.
Could you try with the environment variables?
https://firefox-source-docs.mozilla.org/networking/http/logging.html#windows
Maye sure to add CaptivePortalService:5 to MOZ_LOG=

Thanks!

Hi. I did that before in about:networking, but now I've tried launching from CMD

See the new attached file log.txt.child-1.moz_log.zip

Comment 11

[Valentin Gosu [:valentin] (he/him)]

In bug 1433500 we changed the URL of the captive portal detection.
Before it was loading a TXT file, not it's loading a HTML file, so I assume your proxy might be interfering with it.
Could you tell us:

1. Does the bug happen without a proxy?
2. What does your proxy do?

Comment 12

[iampowerslave]

(In reply to Valentin Gosu [:valentin] (he/him) from comment #8)

Unfortunately the log misses most the CP attempts, and only shows the last one which gets aborted.
Could you try with the environment variables?
https://firefox-source-docs.mozilla.org/networking/http/logging.html#windows
Maye sure to add CaptivePortalService:5 to MOZ_LOG=

Thanks!

Hi. I did that before in about:networking, but now I've tried launching from CMD

See the new attached file log.txt.child-1.moz_log.zip(In reply to Valentin Gosu [:valentin] (he/him) from comment #11)

In bug 1433500 we changed the URL of the captive portal detection.
Before it was loading a TXT file, not it's loading a HTML file, so I assume your proxy might be interfering with it.
Could you tell us:

1. Does the bug happen without a proxy?
2. What does your proxy do?

Hi.

1. The bug does not happen without a proxy
2. The proxy filters scripts and stuff from websites (http, not https)

Regards,

David

Comment 13

[Valentin Gosu [:valentin] (he/him)]

I'm tentatively going to close this bug as invalid.
The response to the CP page is a HTML file containing a meta redirect.
The redirect is only relevant if the page are loaded in a tab. The CP checker only verifies if the response content is the same byte-for-byte.
Technically this should be fixed if we fix bug 1549393.
Given that we haven't received many reports about CPs in 89, I assume this proxy setup is quite rare.
Is the proxy-setup you're using custom made, or is it "a pre-packaged solution"?

Comment 14

[iampowerslave]

(In reply to Valentin Gosu [:valentin] (he/him) from comment #13)

I'm tentatively going to close this bug as invalid.
The response to the CP page is a HTML file containing a meta redirect.
The redirect is only relevant if the page are loaded in a tab. The CP checker only verifies if the response content is the same byte-for-byte.
Technically this should be fixed if we fix bug 1549393.
Given that we haven't received many reports about CPs in 89, I assume this proxy setup is quite rare.
Is the proxy-setup you're using custom made, or is it "a pre-packaged solution"?

It is the "Proxomitron" it has rules so I think you'll consider it custom made.