does rest.nvim forward unknown http headers ?

[teto]

I have the following request:

GET {{URL}}/calibration_manager/calibration/{{CALIB_CORE_ID}}/snapshots/{{CALIB_SNAP_ID}}/performance
Content-Type: application/json
Accept: application/json;charset=utf-8
X-jinko-manifest-version: 1

and my server answers with unknown X-jinko-manifest-version (it works with curl invocations). Does rest.nvim support unknown http extensions (usually starting with X-). Any workaround ?

[boltlessengineer]

What happens if you request through curl with X-Jinko-Manifest-Version? Is that custom header case-sensitive?