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我用 grpc-gateway 创建了一个基本服务。这就是我的 .proto 文件的样子

syntax = "proto3";

package health;

option go_package = "github.com/userl/brw/api/health";
import "google/api/annotations.proto";

service Health {
    // Sends a greeting
    rpc Ping (HealthRequest) returns (HealthReply) {
      option (google.api.http) = {
        get: "/ping"
      };
    }
  }
  
  // The request message containing the user's name
  message HealthRequest {    
  }
  
  // The response message containing the greetings
  message HealthReply {
    string message = 1;
  }

我使用以下代码生成并启动服务

mux := runtime.NewServeMux()
opts := []grpc.DialOption{grpc.WithInsecure()}
err := pHealth.RegisterHealthHandlerFromEndpoint(ctx, mux, ":3002"), opts)
if err != nil {
    log.Fatal(err)
}

http.ListenAndServe(":3001"), mux)

现在，当我尝试 curl 命令时，例如， curl http://localhost:3001/ping我收到以下错误 curl: (7) Failed to connect to localhost port 3003: Connection refused

当我尝试 grpcurl 时 grpcurl --plaintext localhost:3002 list，出现以下错误 failed to dial target host "localhost:3002": dial tcp 127.0.0.1:3002: connect: connection refused

不知道这里出了什么问题或我需要做什么。

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