syntax = "proto3"; import "google/api/annotations.proto"; package helloworld; // The greeting service definition. service Greeter { // Sends a greeting rpc SayHello (HelloRequest) returns (HelloReply) { option (google.api.http) = { post: "/v1/hello" body: "*" }; } } // The request message containing the user's name. message HelloRequest { string name = 1; } // The response message containing the greetings message HelloReply { string message = 1; }