Open Bug 1228401 Opened 9 years ago Updated 2 years ago

How to debug what is causing a HTTP request stall on a test page using Network View?

Categories

(DevTools :: Netmonitor, enhancement, P2)

45 Branch
x86
Windows
enhancement

Tracking

(firefox45 affected)

Tracking Status
firefox45 --- affected

People

(Reporter: jujjyl, Unassigned)

Details

(Whiteboard: [polish-backlog])

Here is a STR to ask for an enhancemenent to the Network view to help figure out why a particular HTTP transfer is stalling for a long time to finish:

2. Navigate to https://dl.dropboxusercontent.com/u/40949268/dump/hop/download_test.html
3. Clear the browser cache.
4. Tap Ctrl-Shift-Q to open the Network view.
5. Reload the page.
6. Observe the network transfers.

Observed: On Windows, Firefox takes two minutes to waiting/throttling finish a HTTP request. However, the Network view does not explain why that is.

Expected: The Network panel should tell why it had to wait for two minutes for the HTTP request to be performed, e.g. "Waiting for data from server", or "Applying browser throttling due to too many simultaneous connections", or similar.

Currently one is able to deduce from the Network view that there is a two minute stall occurring due to some reason, but it does not offer help to how to fix it. (should I reconfigure something in the server? Is my page bad for doing too many XHRs? If so, what's the limit? etc)

See the following screenshot that illustrates the mysterious scenario in question: https://dl.dropboxusercontent.com/u/40949268/dump/hop/firefox_download_test.png . This is related to triaging of bug 1228036.
Priority: -- → P2
Whiteboard: [polish-backlog]
Product: Firefox → DevTools
Severity: normal → S3
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