1627800 - 404 http error isn't displayed in Firefox

Status: RESOLVED DUPLICATE of bug 1325876

(Core :: Networking: HTTP, defect, P2)

Description

[[e-mail]]

User Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:74.0) Gecko/20100101 Firefox/74.0

Steps to reproduce:

I ran this NodeJS script always returning 404 http error:
const http = require('http');

const hostname = '127.0.0.1';
const port = 3009;

const server = http.createServer((req, res) => {
res.statusCode = 404;
res.end();
});

server.listen(port, hostname, () => {
console.log(Server running at http://${hostname}:${port}/);
});

Actual results:

Firefox shows a blank screen.

(Chromium says HTTP ERROR 404)

Expected results:

Firefox should show the user a message about what happened.

The http code and other relevant info (the IP address, host name, headers) should also be displayed.

Comment 1

[[e-mail]]

OS: FreeBSD 12.1

Comment 2

[Hani Yacoub, Desktop QA]

Could you please provide if it's possible a test page to try to reproduce the issue?
Thanks.

Comment 3

[Firefox Bug Husbandry Bot]

Because this bug's Severity has not been changed from the default since it was filed, and it's Priority is -- (Backlog,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 5

[Valentin Gosu [:valentin] (he/him) {{ FYI: OOO 14 June - 4 August }}]

Attachment: test.js

Running the file with nodejs test.js then loading http://127.0.0.1:3009/ shows an error page in Chrome and nothing in Firefox.

I guess it would be nice if we could provide some default content when there is none for a 404 response? It seems redirecting to about:neterror?something isn't the right approach here.