The gRPC has a more complete proposal than MsgPack because it is composed of the data serializer Protobuf, as a layer between communication services making use of RPC.
For serialization, create a .proto file with the information about what will be serialized for RPC communication following a client/server model if needed.
The following code can be seen as an example of a .protocol file, that was extracted from the official site tool:
The greeting service definition:
service Greeter {
Sends a greeting:
rpc SayHello (HelloRequest) returns (HelloReply) {}
}
The request message containing the user's name:
message HelloRequest {
string name = 1;
}
The response message containing the greetings:
message HelloReply { string message = 1; ...
