Docker's OCI distribution protocol sends Expect: 100-continue for blob
uploads larger than ~5 MB. Without this fix, Pingora forwarded the header
to Gitea, Gitea responded with 100 Continue, and Pingora could not reliably
proxy the informational response back — causing spurious 400 errors for the
client on large image layer pushes.
Fix: respond with 100 Continue in request_filter before upstream_peer is
called, then strip the Expect header in upstream_request_filter so the
upstream never sends its own 100 Continue.
Also adds a unit test verifying that remove_header("expect") strips the
header from the upstream request without disturbing other headers.
Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>
Root cause: upstream_request_filter was inserting x-forwarded-proto with
a raw headers.insert() call (via DerefMut) which only updates base.headers
but NOT the CaseMap. header_to_h1_wire zips CaseMap with base.headers, so
headers added without a CaseMap entry are silently dropped on the wire.
Fix: use insert_header() which keeps both maps in sync.
Also adds:
- src/lib.rs + [lib] section: exposes SunbeamProxy/RouteConfig/AcmeRoutes
to integration tests without re-declaring modules in main.rs
- tests/e2e.rs: real end-to-end test — starts a SunbeamProxy over plain
HTTP, routes it to a TCP echo backend, and asserts x-forwarded-proto: http
is present in the upstream request headers
- Updated unit tests to verify header_to_h1_wire round-trip (not just that
HeaderMap::insert works in isolation)
Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>
By default every plain-HTTP request is 301-redirected to HTTPS — no upstream
is ever contacted, making it as close to an L4 redirect as HTTP allows.
New RouteConfig field `disable_secure_redirection` (bool, default false):
when set to true on a route, plain-HTTP requests for that host pass through
to the backend unchanged instead of being redirected.
Also fixes the redirect URL to include the original query string, which was
previously dropped (e.g. ?next=/dashboard would be lost after redirect).
Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>
