[开源]快速构建文件下载，支持文件加密，自定义限速

如何使用

1. 通过MasterChief.DotNet.Core.Config构建下载配置文件

   <?xml version="1.0" encoding="utf-16"?>
   <DownloadConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                   FileNameEncryptorIv="0102030405060708090a0a0c0d010208"
                   FileNameEncryptorKey="DotnetDownloadConfig"
                   LimitDownloadSpeedKb="1024"
                   DownLoadMainDirectory="D:\OneDrive\软件\工具\">
   </DownloadConfig>

2. 在WebForm下新建一般处理程序，并实现DownloadHandler抽象类

   /// <summary>
   ///     FileDownloadHandler 的摘要说明
   /// </summary>
   public class FileDownloadHandler : DownloadHandler, IHttpHandler
   {
       public void ProcessRequest(HttpContext context)
       {
           var fileName = context.Request["fileName"];
           StartDownloading(context, fileName);
       }
   
       public bool IsReusable => false;
   
       public override void OnDownloadFailed(HttpContext context, string fileName, string filePath, string ex)
       {
           context.Response.Write(ex);
       }
   
       public override void OnDownloadSucceed(HttpContext context, string fileName, string filePath)
       {
           var result = $"文件[{fileName}]下载成功，映射路径：{filePath}";
           context.Response.Write(result);
       }
   }

3. 在WebForm下载文件加密显示

   protected void Page_Load(object sender, EventArgs e)
   {
       string url = DownloadFileContext.Instance.EncryptFileName("typora-setup-x64.exe");
       link.NavigateUrl = "~/FileDownloadHandler.ashx?fileName=" + url;
   }

4. 运行效果