CUPS unable to print using ipps:// with "The printer is not responding."

[obadz]

Describe the bug

Somewhere between 58a1abd and 2057814, cups lost its ability to print using ipps:// end points (in my case an HP DeskJet 4100 printer).

Instead it flags the error "The printer is not responding".

Using the ipp:// endpoints still works fine.
Reverting to 58a1abd works fine.

Reverting specific cups related commits 005483e, 10f25e8, 07ec5ac and 3edeb8f does not fix the problem.

Steps To Reproduce

Print a document using CUPS on a printer configured with the ipps:// end point.

Expected behavior

Document comes out of printer.

Screenshots

$ journalctl -u cups.service -ef
...
cupsd[1344]: [Job 372] The printer is not responding.
cupsd[1344]: Saving subscriptions.conf...
cupsd[1344]: [Job 372] The printer is not responding.
cupsd[1344]: Saving subscriptions.conf...
...

Additional context

I will try to add more information to this issue as it comes up.

Notify maintainers

@matthewbauer

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

 - system: `"x86_64-linux"`
 - host os: `Linux 6.6.30, NixOS, 24.05 (Uakari), 24.05.git.pkgs-21b3130.conf-f18e0a0`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.2`
 - nixpkgs: `~/git/nixpkgs`

[obadz]

Nagging suspicion: broken by #306637 and fixed by #311735

[obadz]

Confirmed fixed in bfb7a88