syntax = "proto3"; // option go_package = "google.golang.org/grpc/examples/helloworld/helloworld"; // option java_multiple_files = true; // option java_package = "io.grpc.examples.helloworld"; // option java_outer_classname = "HelloWorldProto"; package proto; // 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; }