netty: Requests with Connection header are malformed #8559
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Although this is part of HTTP/2 and should have already been handled already, it was noticed as part of RBAC work to avoid matching hop-by-hop headers. See gRFC A41. Also add a warning if creating Metadata.Key for "Connection". Use this to try to help diagnose a client if it happens to blindly copy headers from HTTP/1, as PROTOCOL_ERROR is hard to debug. This rolls-forward 6e89919 after it was reverted in 7669656, now that the test proxy has been fixed.
sergiitk
approved these changes
Sep 27, 2021
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Although this is part of HTTP/2 and should have already been handled
already, it was noticed as part of RBAC work to avoid matching
hop-by-hop headers. See gRFC A41.
Also add a warning if creating Metadata.Key for "Connection". Use this
to try to help diagnose a client if it happens to blindly copy headers
from HTTP/1, as PROTOCOL_ERROR is hard to debug.
This rolls-forward 6e89919 after it was reverted in 7669656, now that
the test proxy has been fixed.
CC @dapengzhang0, @YifeiZhuang