1584844 - Tools > Developer Tools (aka DevTools) > Network is blank - No network request can be recorded or managed.

Status: RESOLVED FIXED

(Thunderbird :: Preferences, defect)

Description

[Richard Leger]

Attachment: dev.tools.network.empty.PNG

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36

Steps to reproduce:

Open TB Daily 71.0a1 2019-09-29-08-27-21, press CTRL+SHIFT+I to open Developer Tools (equivalent to Menu > Tools > Developer Tools), then select Network tab in the DevTools window that opened...

Actual results:

Dev Tools > Network tab content is empty. No network request can be recorded or managed.

Expected results:

Dev Tools > Network tab content shall not be empty. Tools to record and manage network request shall appear in the view.

Comment 1

[Jorg K (CEST = GMT+2)]

Must be a recent regression, Alice, can you find it for us please.

Comment 2

[Alice0775 White]

Regression window:
https://hg.mozilla.org/comm-central/pushloghtml?fromchange=6d3bef0ac6cee5aeb2f061163e1f5b40778f9701&tochange=d109b7903efb4637d877845579fc8501b132e3d3
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=9596d7f4a7457bccc78cadf9c39bcc9c4b5b97f8&tochange=ce04e402c705c8ee9d491c3cef11a3876af2680f

Comment 3

[Jorg K (CEST = GMT+2)]

Thanks you, Alice, nothing really obvious here.

Julian, there are a few devtools changesets in that range. Anything comes to mind that would have broken the network tab in TB?

Comment 4

[Alice0775 White]

(In reply to Jorg K (GMT+2) from comment #3)

Thanks you, Alice, nothing really obvious here.

Julian, there are a few devtools changesets in that range. Anything comes to mind that would have broken the network tab in TB?

Manually adding devtools.netmonitor.features.requestBlocking = false will fix the issue on TB71a1.
So. this is regressed by d9b4b368aa2e7151f0a1dd8065a0864bc4d001e6 David Walsh — Bug 1580530 - Implement NetworkActionBar in the netmonitor r=Honza

Comment 5

[Jorg K (CEST = GMT+2)]

Interesting. So does FF set this pref? Oh, yes, they do here:
browser/app/profile/firefox.js
2107 pref("devtools.netmonitor.features.requestBlocking", false);

So we just need to port that. Thanks so much, Alice, I'll do that in the next two hours.

Comment 6

[Richard Leger]

Attachment: missing.preference_devtools.netmonitor.features.requestBlocking

FYI, the preference option devtools.netmonitor.features.requestBlocking is non-existent by default in TB. See attached...

Adding it manually as a boolean preference with value false did not fixed the issue at my end...

Comment 7

[Richard Leger]

Attachment: requestBlocking=false not fixing issue

Comment 8

[Richard Leger]

Attachment: browser.toolbox.conectiion.status

FYI, after a short while the DevTools > Network tab disappear and is replaced by the Browser Toolbox connection status attached...

Comment 9

[Jorg K (CEST = GMT+2)]

Attachment: 1584844-add-pref.patch

This does fix the issue. Richard, you can confirm in tomorrow's Daily.

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/1d6ea04f0f44
Port bug 1580530: add pref devtools.netmonitor.features.requestBlocking. r=me

Comment 11

[Richard Leger]

(In reply to Jorg K (GMT+2) from comment #9)

This does fix the issue. Richard, you can confirm in tomorrow's Daily.

Confirmed sorted in TB Daily 71.0a1 2019-09-30-08-24-03-comm-central...
Thank you all.