go get -u google.golang.org/grpc
protoc 命令
//https://github.com/protocolbuffers/protobuf/releases
//下载放置到gopath bin下，包括include
go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1
//https://protobuf.dev/reference/go/go-generated/