Test & Warn if MD@Home is enabled and User has Referer spoofing turned on.

[Kyte]

Was having issues loading images through md@home in my usual Firefox, so I sent off a report. Out of curiosity I loaded the same manga on Chrome and it loaded correctly, so I compared the Request headers and noticed the Chrome tab had the referer set to md.org, while the Firefox one didn't. This tipped me off so I turned off Referer Spoofing in uMatrix, which fixed the issue.

Since this is not a very obvious solution, it might be a good idea to try and test if the user has referer spoofing turned on and if so show a popup warning the user to turn it off or MD@Home images won't load.

 

[Holo]

Referrer spoofing is probably an edge case. You wouldn't expect the average user to do that.

 

[Kyte]

Indeed, I don't think it's a bug.
However, IIRC uMatrix has it on by default and in this day and age there's been a slow but steady rise in usage of privacy tools, it's worth considering giving a bit of help for those that aren't quite as savvy.

 

[Halo]

From uMatrix' description:

*For advanced users.*

And its github:

Definitely for advanced users.

You're expected to be solving your own problems when using this kind of extension.