|  | // Copyright 2015 gRPC authors. | 
|  | // | 
|  | // Licensed under the Apache License, Version 2.0 (the "License"); | 
|  | // you may not use this file except in compliance with the License. | 
|  | // You may obtain a copy of the License at | 
|  | // | 
|  | //     http://www.apache.org/licenses/LICENSE-2.0 | 
|  | // | 
|  | // Unless required by applicable law or agreed to in writing, software | 
|  | // distributed under the License is distributed on an "AS IS" BASIS, | 
|  | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | // See the License for the specific language governing permissions and | 
|  | // limitations under the License. | 
|  |  | 
|  | syntax = "proto3"; | 
|  |  | 
|  | option java_multiple_files = true; | 
|  | option java_package = "io.grpc.examples.helloworld"; | 
|  | option java_outer_classname = "HelloWorldProto"; | 
|  | option objc_class_prefix = "HLW"; | 
|  |  | 
|  | package helloworld; | 
|  |  | 
|  | // The greeting service definition. | 
|  | service Greeter { | 
|  | // Sends a greeting | 
|  | rpc SayHello (HelloRequest) returns (HelloReply) {} | 
|  |  | 
|  | rpc SayHelloStreamReply (HelloRequest) returns (stream HelloReply) {} | 
|  |  | 
|  | rpc SayHelloBidiStream (stream HelloRequest) returns (stream 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; | 
|  | } |