registerProxiedPrefix tells bodyParser to leave a prefix's request bodies alone.
that is correct for forwarded traffic and load-bearing for uploads: a parsed
multipart body is re-serialised with a new boundary while the original
content-type header is still forwarded, and every upload fails.
but a plugin mounts its OWN routes under the same prefix, and those are not
forwarded — they are served in-process and they need their bodies. claiming the
whole prefix meant every field on them read as missing.
caldav hit it the day it was extracted: POST /api/caldav/provision/ios answered
"deviceLabel is required" for a request that carried one. its app passwords used
to live at /api/dav, a second prefix that was not proxied, and one prefix per
plugin ended that arrangement.
so `proxiedSubPath` — caldav's sidecar answers `_officer/*` and nothing else, so
it claims `/api/caldav/_officer` and the plugin's own routes are parsed normally.
omitted means the whole prefix, which is right for every sidecar with no routes
of its own, so nothing else changes.
this affects any plugin mixing its own routes with a proxy, which is most of
them. they have not hit it because their own routes are GETs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer-Session: 656f5c85-e49a-4f1f-b9f3-042a04b4d043
pastilhasandClaude Opus 5
f00abe816e