V2: Require HTTP/2 for the gRPC transport #1279
Merged
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gRPC implementations typically require HTTP/2, but the protocol itself does not. connect-es can run gRPC over HTTP 1.1, but that requires support for HTTP trailers end to end. This can be difficult to achieve and guarantee, and most other gRPC implementations do not support it, so we are disabling support for gRPC over HTTP 1.1 in version 2.
Closes #1258.