1664926 - about:neterror does not allow user to navigate to site once DNS is back

Status: RESOLVED DUPLICATE of bug 1665322

(Core :: DOM: Navigation, defect, P3)

Description

[Asif Youssuff]

Attachment: image.png

Saw this today once my WiFi cut out.

Error - Hmm. We’re having trouble finding that site.

We can’t connect to the server at www.reddit.com.

URL is: about:neterror?e=dnsNotFound&u=https%3A//www.reddit.com/message/unread/&c=UTF-8&d=We%20can%E2%80%99t%20connect%20to%20the%20server%20at%20www.reddit.com.

I reconnected to WiFi and clicked the "Try Again" button, but the page is not connected to.
I have reddit.com open in other tabs, so there is no networking issue.

Unsure, but this may be due to setting fission.sessionHistoryInParent to true.

Comment 1

[alex_mayorga]

¡Hola Asif!

This is Firefox increasing your productivity by locking you out of reddit...¯_(ツ)_/¯

Kidding aside, what entries for reddit.com do you see in about:networking#dns ?

Once you get to the broken state, can you lookup the domain over at about:networking#dnslookuptool ?

If so, what are the responses?

Can you please provide us with any the "Important Modified Preferences" with "network." section of about:support ?

¡Gracias!
Alex

Comment 2

[Asif Youssuff]

Attachment: about:support

Comment 3

[Asif Youssuff]

(In reply to alex_mayorga from comment #1)

¡Hola Asif!

Kidding aside, what entries for reddit.com do you see in about:networking#dns ?

Once you get to the broken state, can you lookup the domain over at about:networking#dnslookuptool ?

IPs
151.101.1.140
151.101.65.140
151.101.129.140
151.101.193.140

Can you please provide us with any the "Important Modified Preferences" with "network." section of about:support ?

Thanks Alex!

Like I said in my initial report, I was able to browse reddit again after my network came back up, but the tab would not let me get back to the page using the "Try Again" button.

I do suspect that this may be due to fission.sessionHistoryInParent, even though Fission was disabled, but that may be a red herring.

FYI, you can easily reproduce this by navigating to about:neterror?e=dnsNotFound&u=https%3A//www.reddit.com/message/unread/&c=UTF-8&d=We%20can%E2%80%99t%20connect%20to%20the%20server%20at%20www.reddit.com - I don't know how the URL got into that state, but it is a hint of the underlying problem (perhaps).

Comment 4

[:Gijs (he/him)]

Clear STR:

1. clean profile
2. set fission.sessionHistoryInParent to true (don't bother setting fission.autostart to true
3. disable network
4. put reddit.com (or any other domain) in the address bar
5. hit enter
6. click "try again" (which will try to refresh)

ER:
it tries to refresh, keeping the same URL

AR:
we get the error page URL.

Comment 5

[Olli Pettay [:smaug][[e-mail]]]

Oh, with fission.sessionHistoryInParent (which is still very much unsupported, but thanks for testing it!).

Comment 6

[Peter Van der Beken [:peterv]]

This might be a dupe of bug 1665322. Looking.

Comment 7

[:Gijs (he/him)]

(In reply to Peter Van der Beken [:peterv] from comment #6)

This might be a dupe of bug 1665322. Looking.

Yeah, this wfm on current nightly - we can probably close as a dupe?

Comment 8

[Neha Kochar [:neha]]

Marking as a dup per comment 7.
We should also not try to enable fission.sessionHistoryInParent without fission. This isn't enforced in code yet, but probably should be.