[Pkg-chromium-maint] Bug#862752: chromium: 404 pages can't be found

[Bob Proulx]

Emmanuel Revah wrote:
> Dear Maintainer,

Hello Emmanuel.  I am not the maintainer but I have a suggestion.
When you find strange things like this it is always good to double
check using one of the command line tools.  Note also that many sites
have custom 404 pages that may be fooling you.  Debian's site has
custom 404 pages for example.

> It appears that Chromium does not let me see 404 pages sent from certain
> websites. I've tested using the same website with Firefox, I get the usual 404
> header with the website's 404 page.
> 
> With Chromium I do not, I get Chromium's own error page "No webpage was found
> for the web address:".

It would be good to double using wget or curl to verify the headers
and return code completely independently of any of the web browsers.
For example:

$ wget -S -O/dev/null http://www.debian.org/testing-nonexistent
--2017-05-16 18:27:25--  http://www.debian.org/testing-nonexistent
Resolving www.debian.org (www.debian.org)... 149.20.4.15, 140.211.166.202, 128.31.0.62, ...
Connecting to www.debian.org (www.debian.org)|149.20.4.15|:80... connected.
HTTP request sent, awaiting response... 
  HTTP/1.1 404 Not Found
  Date: Wed, 17 May 2017 00:27:25 GMT
  Server: Apache
  Content-Location: 404.en.html
  Vary: negotiate,accept-language
  TCN: choice
  X-Content-Type-Options: nosniff
  X-Frame-Options: sameorigin
  Referrer-Policy: no-referrer
  X-Xss-Protection: 1
  Last-Modified: Mon, 08 May 2017 05:26:10 GMT
  ETag: "1e37-54efc7a13eacc;54f98ecd39bea"
  Accept-Ranges: bytes
  Content-Length: 7735
  X-Clacks-Overhead: GNU Terry Pratchett
  Keep-Alive: timeout=5, max=100
  Connection: Keep-Alive
  Content-Type: text/html
  Content-Language: en
2017-05-16 18:27:25 ERROR 404: Not Found.

> I found one thing that does work: DevTools. Indeed, with devtools open I can
> see the server's 404 page as I should.

I do not understand what you mean when you say "with devtools open".
But again I am not the maintainer but just another user.

Bob