[開源]快速構建文件下載，支持文件加密，自定義限速

項目說明

1. 目前支持WebForm文件下載，後續支持Mvc
2. 支持下載文件加密以及下載限速
3. 項目源碼：MasterChief.DotNet.Framework.Download
4. Nuget：Install-Package MasterChief.DotNet.Framework.Download
5. 歡迎PR，歡迎Star；

如何使用

1. 通過MasterChief.DotNet.Core.Config構建下載配置文件

   <?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\軟體\工具\">
   </DownloadConfig>

2. 在WebForm下新建一般處理程式，並實現DownloadHandler抽象類

   /// <summary>
   ///     FileDownloadHandler 的摘要說明
   /// </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}]下載成功，映射路徑：{filePath}";
           context.Response.Write(result);
       }
   }

3. 在WebForm下載文件加密顯示

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

4. 運行效果