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Add locator example (#1796)
Co-authored-by: Bruno Oliveira <brunolins16@users.noreply.github.com>
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‎examples/Locator/Client/Client.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net6.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<Protobuf Include="..\Proto\internal.proto" GrpcServices="Client" Link="Protos\internal.proto" />
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<Protobuf Include="..\Proto\external.proto" GrpcServices="Client" Link="Protos\external.proto" />
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<PackageReference Include="Google.Protobuf" Version="$(GoogleProtobufPackageVersion)" />
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<PackageReference Include="Grpc.Net.Client" Version="$(GrpcDotNetPackageVersion)" />
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<PackageReference Include="Grpc.Tools" Version="$(GrpcToolsPackageVersion)" PrivateAssets="All" />
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</ItemGroup>
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</Project>

‎examples/Locator/Client/Program.cs

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#region Copyright notice and license
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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using System;
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using System.Diagnostics;
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using System.Threading.Tasks;
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using Greet;
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using Grpc.Core;
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using Grpc.Net.Client;
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namespace Client
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{
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public class Program
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{
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static async Task Main(string[] args)
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{
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await MakeInternalCall("https://localhost:5001");
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try
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{
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await MakeInternalCall("http://localhost:5000");
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Debug.Fail("Expected error.");
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}
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catch (RpcException ex)
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{
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Console.WriteLine(ex.Status.StatusCode);
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}
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await MakeExternalCall("http://localhost:5000");
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try
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{
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await MakeExternalCall("https://localhost:5001");
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Debug.Fail("Expected error.");
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}
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catch (RpcException ex)
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{
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Console.WriteLine(ex.Status.StatusCode);
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}
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Console.WriteLine("Shutting down");
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Console.WriteLine("Press any key to exit...");
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Console.ReadKey();
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}
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private static async Task MakeInternalCall(string address)
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{
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var channel = GrpcChannel.ForAddress(address);
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var client = new Internal.InternalClient(channel);
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var reply = await client.SayHelloAsync(new InternalRequest { Name = "InternalClient" });
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Console.WriteLine("Greeting: " + reply.Message);
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}
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private static async Task MakeExternalCall(string address)
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{
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var channel = GrpcChannel.ForAddress(address);
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var client = new External.ExternalClient(channel);
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var reply = await client.SayHelloAsync(new ExternalRequest { Name = "ExternalClient" });
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Console.WriteLine("Greeting: " + reply.Message);
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}
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}
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}

‎examples/Locator/Locator.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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VisualStudioVersion = 16.0.29230.61
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}"
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Client", "Client\Client.csproj", "{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Release|Any CPU.Build.0 = Release|Any CPU
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{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {D22B3129-3BFB-41FA-9FCE-E45EBEF8C2DD}
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EndGlobalSection
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EndGlobal

‎examples/Locator/Proto/external.proto

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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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syntax = "proto3";
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package greet;
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service External {
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rpc SayHello (ExternalRequest) returns (ExternalReply);
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}
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message ExternalRequest {
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string name = 1;
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}
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message ExternalReply {
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string message = 1;
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}

‎examples/Locator/Proto/internal.proto

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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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syntax = "proto3";
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package greet;
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service Internal {
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rpc SayHello (InternalRequest) returns (InternalReply);
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}
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message InternalRequest {
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string name = 1;
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}
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message InternalReply {
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string message = 1;
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}

‎examples/Locator/Server/Program.cs

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#region Copyright notice and license
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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.Hosting;
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namespace Server
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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CreateHostBuilder(args).Build().Run();
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}
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public static IHostBuilder CreateHostBuilder(string[] args) =>
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Host.CreateDefaultBuilder(args)
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.ConfigureWebHostDefaults(webBuilder =>
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{
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webBuilder.UseStartup<Startup>();
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webBuilder.ConfigureKestrel(options =>
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{
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options.ListenLocalhost(5000);
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options.ListenLocalhost(5001, listener => listener.UseHttps());
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});
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});
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}
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}

‎examples/Locator/Server/Server.csproj

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net6.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<Protobuf Include="..\Proto\internal.proto" GrpcServices="Server" Link="Protos\internal.proto" />
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<Protobuf Include="..\Proto\external.proto" GrpcServices="Server" Link="Protos\external.proto" />
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<PackageReference Include="Grpc.AspNetCore" Version="$(GrpcDotNetPackageVersion)" />
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</ItemGroup>
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</Project>

‎examples/Locator/Server/Services/ExternalService.cs

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#region Copyright notice and license
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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using System.Threading.Tasks;
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using Greet;
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using Grpc.Core;
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using Microsoft.Extensions.Logging;
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namespace Server
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{
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public class ExternalService : External.ExternalBase
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{
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private readonly ILogger _logger;
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public ExternalService(ILoggerFactory loggerFactory)
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{
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_logger = loggerFactory.CreateLogger<ExternalService>();
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}
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public override Task<ExternalReply> SayHello(ExternalRequest request, ServerCallContext context)
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{
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_logger.LogInformation($"Sending hello to {request.Name}");
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return Task.FromResult(new ExternalReply { Message = "Hello " + request.Name });
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}
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}
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}

‎examples/Locator/Server/Services/InternalService.cs

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#region Copyright notice and license
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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using System.Threading.Tasks;
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using Greet;
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using Grpc.Core;
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using Microsoft.Extensions.Logging;
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namespace Server
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{
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public class InternalService : Internal.InternalBase
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{
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private readonly ILogger _logger;
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public InternalService(ILoggerFactory loggerFactory)
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{
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_logger = loggerFactory.CreateLogger<InternalService>();
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}
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public override Task<InternalReply> SayHello(InternalRequest request, ServerCallContext context)
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{
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_logger.LogInformation($"Sending hello to {request.Name}");
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return Task.FromResult(new InternalReply { Message = "Hello " + request.Name });
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}
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}
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}

‎examples/Locator/Server/Startup.cs

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#region Copyright notice and license
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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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namespace Server
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{
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public class Startup
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{
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public void ConfigureServices(IServiceCollection services)
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{
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services.AddGrpc();
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}
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public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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app.UseRouting();
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app.UseEndpoints(endpoints =>
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{
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endpoints.MapGrpcService<InternalService>().RequireHost("*:5001");
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endpoints.MapGrpcService<ExternalService>().RequireHost("*:5000");
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});
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}
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}
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}

‎examples/Locator/Server/appsettings.Development.json

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{
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"Logging": {
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"LogLevel": {
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"Default": "Debug",
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"System": "Information",
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"Grpc": "Information",
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"Microsoft": "Information"
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}
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}
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}

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