gRPC

.net core 3.0新增長功能

建立grpg服務

1、服務端

 

 

 

using System.Threading.Tasks;
using Grpc.Core;
using Microsoft.Extensions.Logging;

namespace GrpcGreeter
{
    public class GreeterService : Greeter.GreeterBase
    {
        private readonly ILogger<GreeterService> _logger;
        public GreeterService(ILogger<GreeterService> logger)
        {
            _logger = logger;
        }

        public override Task<HelloReply> SayHello(HelloRequest request, ServerCallContext context)
        {
            return Task.FromResult(new HelloReply
            {
                Message = "Hello " + request.Name
            });
        }
    }
}

 

 

2、客戶端

1.Nuget包

Grpc.Net.Client  包含 .NET Core 客戶端

Google.Protobuf  包含適用於 C# 的 Protobuf 消息

Grpc.Tools  包含適用於 Protobuf 文件的 C# 工具支持。 運行時不須要工具包，所以依賴項標記爲 PrivateAssets="All"

2.建立Protos文件夾，從 gRPC Greeter 服務將 Protos\greet.proto 文件複製到 gRPC 客戶端項目

3.工程文件添加

<ItemGroup>
  <Protobuf Include="Protos\greet.proto" GrpcServices="Client" />
</ItemGroup>

4.Program.cs

using System;
using System.Threading.Tasks;
using GrpcGreeter;
using Grpc.Net.Client;

namespace GrpcGreeterClient
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var channel = GrpcChannel.ForAddress("https://localhost:5001");
            var client = new Greeter.GreeterClient(channel);
            var reply = await client.SayHelloAsync(
                              new HelloRequest { Name = "GreeterClient" });
            Console.WriteLine("Greeting: " + reply.Message);
            Console.WriteLine("Press any key to exit...");
            Console.ReadKey();
        }
    }
}