Protobuffers is a binary serialization format for structured data. It is language and platform neutral. It is used to serialize structured data for use in communications protocols, data storage, and more.
The protoc compiler is used to generate code from .proto files. The generated code can be used to populate, serialize, and retrieve structured data.
The gRPC project is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. It enables client and server applications to communicate transparently, and makes it easier to build connected systems.
First you need to install the protoc compiler. You can download it from here. Be sure to download the correct version for your OS.
Then you need to install the protoc-gen-go plugin. You can run the command go install google.golang.org/protobuf/cmd/protoc-gen-go@latest to install the latest version of the compiler.
Also you need to install the protoc-gen-go-grpc plugin. You can run the command go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest to install the latest version of the plugin.
To generate the gRPC code from the proto file to a .go file, you can run the command protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative <relative-route-to-.proto-file>.
To run the Student service run go run server-student/main.go. This one will run in port 5060.
To run the Test service run go run server-test/main.go. This one will run in port 5061.
To run the Client, uncomment/comment the functions depending on what type of connection you want and then run go run client/main.go.