Open PavelA85 opened 1 month ago
@PavelA85, metadata keys in gRPC (and in HTTP headers) are case-insensitive. In HTTP/2, they are always transmitted in lower-case. This lower-casing is done because the keys in a metadata.MD
map must always be lower-case. Since this code is directly creating the map (instead of using methods on the metadata.MD
type), it must make sure they are correctly canonicalized. Also see the relevant grpc-go docs.
Hi, I try to provide header with
-H "isDebug: true"
but header name is lowercased withheaderName := strings.ToLower(strings.TrimSpace(pieces[0]))
during MetadataFromHeadersAny reason for this behavior?