Protocol Buffer example

person.proto

syntax = "proto3";

package grpcexample;

service GRPCExample {
  rpc GetPerson(Request) returns (Person) {}
  rpc ListPeople(Request) returns (stream Person) {}
}

message Request {
}

message Person {
  string name = 1;
  int32 id = 2;
  string email = 3;

  enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
  }

  message PhoneNumber {
    string number = 1;
    PhoneType type = 2;
  }

  repeated PhoneNumber phone = 4;
}