gRPC reference: https://grpc.io/docs/languages/go/quickstart
To recompile protobuf:
protoc --go_out=. --go_opt=paths=source_relative \
--go-grpc_out=. --go-grpc_opt=paths=source_relative \
market/market.proto
To run the market server:
go run server/main.go
To run the test client:
go run test_client/main.go
gRPC endpoints are in market/market.proto