Should Blossom endpoints return 401 instead of 400 when the request lacks an Authorization header? #25
Description
E.g. the HEAD /upload endpoint returns 400
Line 21 in 4dba937
BUD 06 ...
"If the server requires authorization to upload it may respond with the 401 status code"
Returning 400 is causing uploads to fail between relays that use Khatru (e.g. Haven) and clients that use blossom-client-sdk (e.g. noStrudel) ... because blossom-client-sdk never sends an Authorization header to HEAD /upload and only sends one to PUT /upload if the response from HEAD /upload is 401