Wpf的gRpc的Server/Client

• 創建Wpf庫項目Hello、Wpf項目HelloServer、Wpf項目HelloClient
  

• 庫項目Hello中引入Nuget

Grpc、Grpc.Tools

• Wpf項目Client、Server分別引入Nuget

Grpc

• 編寫proto

syntax = "proto3";

option csharp_namespace = "greeter.hello";

service Greeter{
    rpc SayHello (HelloRequest) returns (HelloResponse);
    rpc SayWorld (HelloRequest) returns (HelloResponse);
}

message HelloRequest{
    string name = 1;
}

message HelloResponse{
    string message = 1;
}

• 使用命令行方式編譯proto、rpc

..\packages\Grpc.Tools.2.27.0\tools\windows_x64\protoc.exe -I.\Proto\ --csharp_out ./ --grpc_out ./ --plugin=protoc-gen-grpc=..\packages\Grpc.Tools.2.27.0\tools\windows_x64\grpc_csharp_plugin.exe .\Proto\routine.proto

• 使用Grpc.Tools在vs配置編譯選項編譯groto、rpc
  
  proto文件的屬性, Build Action、gRpc Stub Classes（server and client/server only/client only)、Class Access, 此屬性面板的功能由Nuget包Grpc.Tools提供

• Server實現gRpcService

using System.Threading.Tasks;
using greeter.hello;
using Grpc.Core;

namespace HelloServer.gRpcService
{
    class GreeterService: Greeter.GreeterBase
    {
        public override Task<HelloResponse> SayHello(HelloRequest request, ServerCallContext context)
        {
            return Task.FromResult(new HelloResponse() {Message = "server responsed: " + "hello " + request.Name});
        }

        public override Task<HelloResponse> SayWorld(HelloRequest request, ServerCallContext context)
        {
            return Task.FromResult(new HelloResponse() {Message = "server responsed: " + request.Name + " world"});
        }
    }
}

• 創建服務端

using System.ComponentModel;
using System.Windows;
using greeter.hello;
using Grpc.Core;
using HelloServer.gRpcService;

namespace HelloServer
{
    /// <summary>
    /// MainWindow.xaml 的交互邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        private Server server;

        public MainWindow()
        {
            InitializeComponent();

            this.Loaded += OnLoaded;
        }

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            server = new Server()
            {
                Services = { Greeter.BindService(new GreeterService())},
                Ports = { new ServerPort("localhost", 8099, ServerCredentials.Insecure)}
            };
            server.Start();
        }

        protected override void OnClosing(CancelEventArgs e)
        {
            server?.ShutdownAsync().Wait();
            base.OnClosing(e);
        }
    }
}

• 創建客戶端

using System.ComponentModel;
using System.Windows;
using greeter.hello;
using Grpc.Core;

namespace HelloClient
{
    /// <summary>
    /// MainWindow.xaml 的交互邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        private Channel channel;
        private Greeter.GreeterClient client;

        public MainWindow()
        {
            InitializeComponent();

            this.Loaded += OnLoaded;
        }

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            channel = new Channel("localhost", 8099, ChannelCredentials.Insecure);
            client = new Greeter.GreeterClient(channel);
            var response = client.SayHello(new HelloRequest() { Name = "Link Sun" });
            lvResponse.Items.Add(response);
        }

        private void TbHello_OnClick(object sender, RoutedEventArgs e)
        {
            string name = tbName.Text;
            var response = client.SayHello(new HelloRequest() { Name = name });
            lvResponse.Items.Add(response);
        }

        private void TbWorld_OnClick(object sender, RoutedEventArgs e)
        {
            string name = tbName.Text;
            var response = client.SayWorld(new HelloRequest() { Name = name });
            lvResponse.Items.Add(response);
        }

        protected override void OnClosing(CancelEventArgs e)
        {
            channel?.ShutdownAsync().Wait();
            base.OnClosing(e);
        }
    }
}

• 運行情況
  

• 代碼工程
  https://github.com/linxmouse/gRpcStartup