单文件版本的netframework的net core 2.1

如果你还在用net4.5,如果你还在用netframework，又想使用netcore2.1的库或者功能，又觉得nuget动不动就好大，可以试试下面的这个。

https://pan.baidu.com/s/1uxywusd485RgqxSnuVTzQw

就一个dll,里面netcore新增的功能，比如span,比如新的非winhttp.dll的httpclient,都可以用

例：

创建一个新的console netframework4.5的项目

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.AspNetCore.Server.Kestrel.Core.Internal;
using Microsoft.Extensions.Options;
using Microsoft.AspNetCore;

namespace testhttp
{
class Program
{
static void Main(string[] args)
{
Http();
}

static void Http()
{
var host = new WebHostBuilder()
.UseKestrel(options =>
{
// options.ThreadCount = 4;
//options.NoDelay = true;
//options.UseConnectionLogging();
})
.UseUrls("http://127.0.0.1:5001")
.UseContentRoot(Directory.GetCurrentDirectory())
.UseStartup<Startup>()
.Build();
host.Run();
}
}

public class Startup
{
public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(LogLevel.Trace);

app.Run(async context =>
{
Console.WriteLine("{0} {1}{2}{3}",
context.Request.Method,
context.Request.PathBase,
context.Request.Path,
context.Request.QueryString);
Console.WriteLine("Method:{0}", context.Request.Method);
Console.WriteLine("PathBase:{0}", context.Request.PathBase);
Console.WriteLine("Path:{0}", context.Request.Path);
Console.WriteLine("QueryString:{0}", context.Request.QueryString);

var connectionFeature = context.Connection;
Console.WriteLine("Peer:{0}", connectionFeature.RemoteIpAddress.ToString());
Console.WriteLine("Sock:{0}", connectionFeature.LocalIpAddress.ToString());

context.Response.ContentLength = 11;
context.Response.ContentType = "text/plain";
await context.Response.WriteAsync("Hello world");
});
}
}
}

这样就可以了，对了libuv你自己下一个，丢到输出目录 ，或者用这个nuget

https://www.nuget.org/packages/Libuv/