1005757 - A way to pause the HTTP traffic after a certain resource in Network Monitor View.

Status: NEW

(DevTools :: Netmonitor, enhancement, P3)

Description

[Karl Dubost💡 :karlcow]

This is slightly related to Bug 1005755.

When debugging JS, there are ways to create breakpoints (with some conditions). It would be also very useful to be able to create a breakpoint in the HTTP timeline on certain resources.

Basically, the first time the page is loaded in the network view, the developer can look at the HTTP resources. It would be good to be able to create a breakpoint and that all traffic stops before or after downloading this specific resources. That would make possible to understand some class of issues such as:

* resources dependency
* races conditions
* rendering state in the timeline (and/or when a resource fails)

Comment 1

[Panos Astithas (he/him) [:past] (please ni?)]

Somewhat related: bug 821610.

Comment 2

[:Harald Kirschner :digitarald]

Karl will document when this happens again.

- Should we pause before or after the resource?
- Should we go offline or break in debugger?

Comment 3

[Karl Dubost💡 :karlcow]

Exhibit 1.

In the issue https://webcompat.com/issues/16845
There is a JavaScript client side redirection based on User Agent detection.

https://www.tealoungesystem.com/ redirects to https://www.tealoungesystem.com/errors/418.php saying that the browser is not supported.

In order to analyze the Javascript, we need the window.relocation to not be effective and so the navigation context to not happen. In this case the pause should be before https://www.tealoungesystem.com/errors/418.php We still want to be able to analyze the JS code until the redirection.