grpc-c#

一、初步使用

1.vs创建grpc项目

 2.服务端

greet.proto

syntax = "proto3";

option csharp_namespace = "GrpcService1";

package greet;

// The greeting service definition.
service Greeter {
  // Sends a greeting
  rpc SayHello (HelloRequest) returns (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;
}

GreeterService.cs

    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
            });
        }
    }

Startup.cs

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapGrpcService<GreeterService>();

                endpoints.MapGet("/", async context =>
                {
                    await context.Response.WriteAsync("Communication with gRPC endpoints must be made through a gRPC client. To learn how to create a client, visit: https://go.microsoft.com/fwlink/?linkid=2086909");
                });
            });

3.客户端

服务端目前都是现成了，直接写客户端

创建一个控制台，引入

Grpc.Net.Client

Google.Protobuf

Grpc.Tools

4.拷贝服务端的greet.proto到客户端

5.编译proto

右键属性-生成操作

 

 然后手动重新编译一下

6.写客户端代码

using Grpc.Net.Client;
using GrpcService1;
using System;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            var channel = GrpcChannel.ForAddress("https://localhost:5001");
            var client = new Greeter.GreeterClient(channel);

            HelloRequest helloRequest = new HelloRequest();
            helloRequest.Name = "Tom";

            HelloReply helloReply = new HelloReply();

            helloReply=client.SayHello(helloRequest);

            Console.WriteLine(helloReply.Message);
        }
    }
}

二、