使用 asp.net core 的最简单的 web 服务器代码是什么？

Question

我正在尝试学习 asp.net 核心，但我发现这些示例对我来说太复杂了。即使是模板创建的新项目，我也看到了依赖注入、MVC、实体框架。我只想使用 asp.net core 编写一个最简单的代码，并在 Web 浏览器上输出一些 hello world。

通过“最简单”，我的意思是在 golang 中是这样的：

package main

import (
    "fmt"
    "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

喜欢这段代码的原因是可以看出应该从net/http模块开始，看看HandleFunc的方法会发生什么。我讨厌当前的 asp.net 核心示例的原因是我一次被如此多的新程序集和类所淹没。

谁能给我一个简单的例子，或者一个简单例子的链接，以便我可以一一学习asp.net core中的新概念？

Answer 1

这是一个没有IIS deps的单一功能的简单网络服务器。

using System;
using System.IO;
using System.Net;
using System.Threading;

namespace SimpleWebServer
{
    class Program
    {
        /*
        okok, like a good oo citizen, this should be a nice class, but for
        the example we put the entire server code in a single function
         */
        static void Main(string[] args)
        {
            var shouldExit = false;
            using (var shouldExitWaitHandle = new ManualResetEvent(shouldExit))
            using (var listener = new HttpListener())
            {
                Console.CancelKeyPress += (
                    object sender,
                    ConsoleCancelEventArgs e
                ) =>
                {
                    e.Cancel = true;
                    /*
                    this here will eventually result in a graceful exit
                    of the program
                     */
                    shouldExit = true;
                    shouldExitWaitHandle.Set();
                };

                listener.Prefixes.Add("http://*:8080/");

                listener.Start();
                Console.WriteLine("Server listening at port 8080");

                /*
                This is the loop where everything happens, we loop until an
                exit is requested
                 */
                while (!shouldExit)
                {
                    /*
                    Every request to the http server will result in a new
                    HttpContext
                     */
                    var contextAsyncResult = listener.BeginGetContext(
                        (IAsyncResult asyncResult) =>
                        {
                            var context = listener.EndGetContext(asyncResult);
                            Console.WriteLine(context.Request.RawUrl);

                            /*
                            Use s StreamWriter to write text to the response
                            stream
                             */
                            using (var writer =
                                new StreamWriter(context.Response.OutputStream)
                            )
                            {
                                writer.WriteLine("hello");
                            }

                        },
                        null
                    );

                    /*
                    Wait for the program to exit or for a new request 
                     */
                    WaitHandle.WaitAny(new WaitHandle[]{
                        contextAsyncResult.AsyncWaitHandle,
                        shouldExitWaitHandle
                    });
                }

                listener.Stop();
                Console.WriteLine("Server stopped");
            }
        }
    }
}