For the record, the reason grpc uses trailers is because it uses http/2, not the other way around. It was expected that since the whole transport was completel

For the record, the reason grpc uses trailers is because it uses http/2, not the other way around. It was expected that since the whole transport was completely new, adopters of http/2 would add trailer support. As it turns out, they mostly didn't. Particularly Firefox and Chrome did not expose trailers. This is even despite being part of the new Fetch API.