能否同时运行 http.ListenAndServe() 和 ReadFromUDP() 函数？

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我正在尝试编写一个简单的 web 应用程序来侦听 udp 数据包。

但是我要么只监听 udp 数据包，要么运行 web 应用程序... 我不熟悉 golang，但这是我用来...的代码 监听udp：

serverconn, _ := net.listenudp("udp", &net.udpaddr{ip:[]byte{#,#,#,#},port:####,zone:""})
  defer serverconn.close()
  buf := make([]byte, 1024)

  for {
    n, addr, _ := serverconn.readfromudp(buf)
    fmt.println("received ", string(buf[0:n]), " from ", addr)
  }

服务器逻辑：

package main
we import 4 important libraries 
1. “net/http” to access the core go http functionality
2. “fmt” for formatting our text
3. “html/template” a library that allows us to interact with our html file.
4. "time" - a library for working with date and time.
import (
   "net/http"
   "fmt"
   "time"
   "html/template"
)

//create a struct that holds information to be displayed in our html file
type welcome struct {
   name string
   time string
}

//go application entrypoint
func main() {
   //instantiate a welcome struct object and pass in some random information. 
   //we shall get the name of the user as a query parameter from the url
   welcome := welcome{"anonymous", time.now().format(time.stamp)}

   //we tell go exactly where we can find our html file. we ask go to parse the html file (notice
   // the relative path). we wrap it in a call to template.must() which handles any errors and halts if there are fatal errors

   templates := template.must(template.parsefiles("templates/welcome-template.html"))

   //our html comes with css that go needs to provide when we run the app. here we tell go to create
   // a handle that looks in the static directory, go then uses the "/static/" as a url that our
   //html can refer to when looking for our css and other files. 

   http.handle("/static/", //final url can be anything
      http.stripprefix("/static/",
         http.fileserver(http.dir("static")))) //go looks in the relative "static" directory first using http.fileserver(), then matches it to a
         //url of our choice as shown in http.handle("/static/"). this url is what we need when referencing our css files
         //once the server begins. our html code would therefore be <link rel="stylesheet"  href="/static/stylesheet/...">
         //it is important to note the url in http.handle can be whatever we like, so long as we are consistent.

   //this method takes in the url path "/" and a function that takes in a response writer, and a http request.
   http.handlefunc("/" , func(w http.responsewriter, r *http.request) {

      //takes the name from the url query e.g ?name=martin, will set welcome.name = martin.
      if name := r.formvalue("name"); name != "" {
         welcome.name = name;
      }
      //if errors show an internal server error message
      //i also pass the welcome struct to the welcome-template.html file.
      if err := templates.executetemplate(w, "welcome-template.html", welcome); err != nil {
         http.error(w, err.error(), http.statusinternalservererror)
      }
   })

   //start the web server, set the port to listen to 8080. without a path it assumes localhost
   //print any errors from starting the webserver using fmt
   fmt.println("listening");
   fmt.println(http.listenandserve(":8080", nil));
}

取自(https://medium.com/google-cloud/building-a-go-web-app-from-scratch-to-deploying-on-google-cloud-part-1-building-a-简单-go-aee452a2e654)

我尝试将这两个提取物放入 1 个文件中，并使用

go run *.go

如有任何帮助，我们将不胜感激！

解决方案

您将需要开始研究 goroutine - 因为您要求同时做两件事。我建议对通道、goroutines 和并发进行一些阅读：)

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