greeter.proto

syntax = "proto3";

option java_multiple_files = true;
option java_package = "com.example.grpc_app_demo";
option java_outer_classname = "GreeterProto";
option objc_class_prefix = "GRT";

package greeter;

// The greeting service definition.
service Greeter {
  //unary call
  rpc SayHello (HelloRequest) returns (HelloResponse) {}

  //server_streaming
  rpc LotsOfReplies(HelloRequest) returns (stream HelloResponse);

  //client_streaming
  rpc LotsOfRequests(stream HelloRequest) returns (HelloResponse);

  //bi-directional_streaming
  rpc BidirectionalHello(stream HelloRequest) returns (stream HelloResponse);
}

// The request message containing the user's name.
message HelloRequest {
  string name = 1;
}

// The response message containing the greetings
message HelloResponse {
  string message = 1;
}