DNS-over-HTTP(behind HTTPS reverse proxy) not working, Empty reply from server since v0.107.24

[PeterDaveHello]

Prerequisites

• I have checked the Wiki and Discussions and found no answer

• I have searched other issues and found no duplicates

• I want to report a bug and not ask a question

Operating system type

Linux, Ubuntu 20.04.5 LTS

CPU architecture

AMD64

Installation

Docker 23.0.1

Setup

On one machine

AdGuard Home version

v0.107.24

Description

What did you do?

Upgrade AdGuard Home from v0.107.23 to v0.107.24, than DoH via reverse proxy to AdGuard Home plain-text http service broken.

Expected result

The upgrade shouldn't break anything as there's no related changes mentioned, before the upgrade, use curl to test the query will get a DoH binary output.

Actual result

Use curl to send DoH HTTP GET request to the service with get curl: (52) Empty reply from server error.

Additional information

allow_unencrypted_doh is set to true in AdGuardHome.yaml already, manually change the schema_version back to 14 and rollback AdGuard Home from v0.107.24 to v0.107.23 will make everything working again.

[PeterDaveHello]

you can't use GET in doh you need use POST and set json header

@Disqu3-mirOir-qt Are you sure? I don't even think a json header need to be set.

[Disqu3-mirOir-qt]

yes this reason why delete my awnser json need set for talk with api not for doh request i think

sorry

[PeterDaveHello]

Oh, okay, I got it, thanks!

[ainar-g]

@PeterDaveHello, it might be the same but as #5518. Could you please check the latest Edge build to see if it fixes the issue for you as well?

[PeterDaveHello]

Hi @ainar-g,

Looks like the issue was fixed in v0.107.25, thanks, BTW, if there's any chance to have corresponding tests to those critical functions like this? Thanks again!

[ainar-g]

The unit tests have already been added, and some other process changes are in the works. Thanks for testing!