This is basic example of gRPC based microservice to serve a Virtual Stack Machine over HTTP2.0 network.
# install protobuf compiler
~/gorpc
$ go get -u -v github.com/golang/protobuf/{proto,protoc-gen-go}
# install grpc
~/gorpc
$ go get -u -v google.golang.org/grpc~/gorpc
$ SRC_DIR=./
$ DST_DIR=$SRC_DIR
$ protoc -I=$SRC_DIR --go_out=plugins=grpc:$DST_DIR $SRC_DIR/machine/machine.proto~/gorpc
$ go run cmd/run_machine_server.go
$ go run client/machine.go