Re: Issue 477685 in chromium: "Service Worker Fallback Required" error message is ambiguous

[chro...@googlecode.com]

Updates:
Summary: "Service Worker Fallback Required" error message is ambiguous
Status: Assigned
Owner: ho...@chromium.org

Comment #2 on issue 477685 by fal...@chromium.org: "Service Worker Fallback
Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

Jeff Posnick answered this on stackoverflow
http://stackoverflow.com/questions/29671771, it looks like a CORS issue.

Horo-san, do you think it's possible to improve the error message ("Service
Worker Fallback Required") or otherwise help the developer understand the
error in this scenario? It looks like the fetch request used mode: no-cors
but it required cors.

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[chro...@googlecode.com]

Updates:
Labels: Needs-Feedback

Comment #3 on issue 477685 by durga.be...@chromium.org: "Service Worker

Fallback Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

antoine@ : Thanks for the issue, could you please update the thread with
your findings, for further triage it.

[chro...@googlecode.com]

Updates:
Labels: -Needs-Feedback

Comment #4 on issue 477685 by fal...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

I'm not sure what feedback is needed... we're not blocked on anything.

[chro...@googlecode.com]

Comment #5 on issue 477685 by anto...@rousseau.im: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

OK so having CORS on the CDN and removing the mode: 'no-cors' mode and the
credentials: 'include' from the fetch request did resolve the issue!
http://stackoverflow.com/a/29679553/1052033

[chro...@googlecode.com]

Updates:
Labels: -Pri-2 Pri-3

Comment #6 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

The message "Service Worker Fallback Required" is an internal message.
It is sent from the browser process to the page to ask blink to send the
fallback request when the page sent CORS request to the SW and the SW
didn't handle the request.

https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/core/loader/DocumentThreadableLoader.cpp&rcl=1429472111&l=428

When the page receives the message, it will send the fallback message
(which SkipServiceWorker flag is true).
So the developer can see the fallback request right after the original
request in the inspector.

I think it is better to hide this internal message but the priority is 3.

[chro...@googlecode.com]

Comment #7 on issue 477685 by fal...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

I guess the question isn't how to improve the error message, but how we
could make it more clear to the developer what the error is.

Is it expected that setting <video src> to a URL that SW responds to with
an opaque response will not work? If so, should DevTools display an error
for that somewhere, like in the Network tab or console?

[chro...@googlecode.com]

Comment #8 on issue 477685 by gevorg.s...@gmail.com: "Service Worker

Fallback Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

http://stackoverflow.com/questions/30748861/service-worker-does-not-load-mp3-files

Similar kind of issue described here.

Images attached 1. SW request 2. SW response 3. browser request 4. browser
console

Attachments:
Screen Shot 2015-06-10 at 10.57.35.png 165 KB
Screen Shot 2015-06-10 at 10.57.27.png 45.3 KB
Screen Shot 2015-06-10 at 10.52.49.png 92.6 KB
Screen Shot 2015-06-10 at 10.57.07.png 55.5 KB

[chro...@googlecode.com]

Comment #9 on issue 477685 by gevorg.s...@gmail.com: "Service Worker

Fallback Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

#8 gevorg.s...@gmail.com

http://stackoverflow.com/questions/30748861/service-worker-does-not-load-mp3-files

Similar kind of issue described here.

Images attached 1. SW request 2. SW response 3. browser request 4. browser
console

[chro...@googlecode.com]

Comment #10 on issue 477685 by gevorg.s...@gmail.com: "Service Worker

Fallback Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

#8 gevorg.s...@gmail.com
http://stackoverflow.com/questions/30748861/service-worker-does-not-load-mp3-files

Similar kind of issue described here.

Images attached 1. SW request 2. SW response 3. browser request 4. browser
console

Attachments:
Screen Shot 2015-06-10 at 11.04.46.png 205 KB

Screen Shot 2015-06-10 at 10.57.27.png 45.3 KB
Screen Shot 2015-06-10 at 10.52.49.png 92.6 KB
Screen Shot 2015-06-10 at 10.57.07.png 55.5 KB

[chro...@googlecode.com]

Updates:
Status: Started
Labels: -Pri-3 Pri-2 M-46

Comment #12 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

(No comment was entered for this change.)

[chro...@googlecode.com]

Comment #13 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

This issue is related to Issue 511054.

[chro...@googlecode.com]

Comment #14 on issue 477685 by bugd...@chromium.org: "Service Worker

Fallback Required" error message is ambiguous

https://code.google.com/p/chromium/issues/detail?id=477685#c14

The following revision refers to this bug:
http://src.chromium.org/viewvc/blink?view=rev&rev=199803

------------------------------------------------------------------
r199803 | ho...@chromium.org | 2015-07-31T08:02:50.724839Z

Changed paths:
M
http://src.chromium.org/viewvc/blink/trunk/Source/core/frame/FrameConsole.cpp?r1=199803&r2=199802&pathrev=199803

Don't show "Service Worker Fallback Required" error message in DevTools
console.

BUG=477685

Review URL: https://codereview.chromium.org/1265823005
-----------------------------------------------------------------

[chro...@googlecode.com]

Updates:
Status: Fixed

Comment #15 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous

https://code.google.com/p/chromium/issues/detail?id=477685

(No comment was entered for this change.)

[chro...@googlecode.com]

Comment #16 on issue 477685 by sim....@gmail.com: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

In Chrome 45.0.2454.101 is not fixed
In my case I have this error message with .mp3 files dinamicaly loaded on
my web-application when service-worker is started. Service worker need for
getting push notifications.

[chro...@googlecode.com]

Comment #17 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

This issue was fixed in M46.
Please try Chrome 46.

[chro...@googlecode.com]

Updates:
Status: Started

Comment #19 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

Reopened.

#14 removed the ambiguous message from the console view.
But it may be better not to show the "(Service Worker Fallback)" item in
the network view.
This is almost meaningless for Web developers.

[chro...@googlecode.com]

Comment #20 on issue 477685 by bugd...@chromium.org: "Service Worker

Fallback Required" error message is ambiguous

https://code.google.com/p/chromium/issues/detail?id=477685#c20

The following revision refers to this bug:

https://chromium.googlesource.com/chromium/src.git/+/2e1de2f8f4ee2c620c43f00b2825224689046c3a

commit 2e1de2f8f4ee2c620c43f00b2825224689046c3a
Author: horo <ho...@chromium.org>
Date: Wed Dec 16 04:36:52 2015

[DevTools] Hide "Service Worker Fallback" response from the Network tab.

This message is used for an internal response which is sent from the browser
process to the page's renderer process to consider the CORS preflight logic
when the Service Worker didn't handle the CORS request .
This message is not only meaningless for Web developers but also confusing
them.
http://stackoverflow.com/questions/34035667/service-worker-making-extra-call

So this cl removes the CORS fallback response from the network panel.

BUG=477685

Review URL: https://codereview.chromium.org/1518383002

Cr-Commit-Position: refs/heads/master@{#365441}

[modify]
http://crrev.com/2e1de2f8f4ee2c620c43f00b2825224689046c3a/third_party/WebKit/Source/devtools/front_end/network/NetworkDataGridNode.js
[modify]
http://crrev.com/2e1de2f8f4ee2c620c43f00b2825224689046c3a/third_party/WebKit/Source/devtools/front_end/network/NetworkLogView.js

[chro...@googlecode.com]

Updates:
Status: Fixed
Labels: M-49

Comment #21 on issue 477685 by ho...@chromium.org: "Service Worker Fallback

Required" error message is ambiguous
https://code.google.com/p/chromium/issues/detail?id=477685

Fixed in M49.

$ git find-releases 2e1de2f8f4ee2c620c43f00b2825224689046c3a
commit 2e1de2f8f4ee2c620c43f00b2825224689046c3a was:
initially in 49.0.2594.0