1646960 - Duplicated CSP blocked request

Status: VERIFIED FIXED

(DevTools :: Netmonitor, defect, P2)

Description

[Jan Honza Odvarko [:Honza] (always need-info? me)]

STR:

1. Load http://janodvarko.cz/tests/network/csp/example1/
2. Open DevTools and select the Network panel
3. Reload the page
4. There are two index.js blocked requests -> BUG

ER: There should be just one.

Honza

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

:Honza, if you think that's a regression, then could you try to find a regression range in using for example mozregression?

Comment 2

[Jan Honza Odvarko [:Honza] (always need-info? me)]

@mayhemer: it looks like the the platform is creating two channels (with different channel IDs) for the one (blocked) requests.
Can you reproduce the issue?

Honza

Comment 3

[Honza Bambas (:mayhemer)]

One is a speculative load (at prescan) and the other is an actual load (at DOM tree building). Redirecting to DOM. This is a known issue, though.

Comment 4

[Jan Honza Odvarko [:Honza] (always need-info? me)]

@mayhemer: Thanks for the update.

I am also increasing priority for this.

Comment 5

[Jan Honza Odvarko [:Honza] (always need-info? me)]

I could figure the patch out thanks to help from @ckerschbaumer

Honza

Comment 6

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Attachment: imported patch ignore-blocked-preloads.diff

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/aa067d4821d6
imported patch ignore-blocked-preloads.diff r=bomsy

Comment 8

[Cristian Brindusan [:cbrindusan]]

https://hg.mozilla.org/mozilla-central/rev/aa067d4821d6

Comment 9

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Reproduced the issue using Firefox 79.0a1 (20200619215130) on Windows 10x64.
The issue is verified fixed with Firefox 79.0 (20200720193547) on Windows 10x64, macOS 10.12 and Ubuntu 18.04.