如果只是拿http作为transport的话，用grpc之类的不好吗...

给你看个复杂劝退的

https://github.com/envoyproxy/envoy/blob/main/bazel/repositories.bzl#L126

libevent
nghttp2
nodejs_http_parser
quic
googleurl
boringssl
c_ares
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FROM 221.220.133.*