下面是Asp.net(c#)实现多线程断点续传的代码，intraweb可以做么?

Question

System.IO.Stream iStream = null;            // Buffer to read 10K bytes in chunk:
            byte[] buffer = new Byte[10240];            // Length of the file:
            int length;            // Total bytes to read:
            long dataToRead;            // Identify the file to download including its path.
            string filepath  = @"E:\software\SQL Server 2000 Personal Edition.ISO";            // Identify the file name.
            string  filename  = System.IO.Path.GetFileName(filepath);            try
            {
                // Open the file.
                iStream = new System.IO.FileStream(filepath, System.IO.FileMode.Open, 
                    System.IO.FileAccess.Read,System.IO.FileShare.Read);
                Response.Clear();                // Total bytes to read:
                dataToRead = iStream.Length;                long p = 0;
                if(Request.Headers["Range"]!=null)
                {
                    Response.StatusCode = 206;
                    p = long.Parse( Request.Headers["Range"].Replace("bytes=","").Replace("-",""));
                }
                if(p != 0)
                {
                    Response.AddHeader("Content-Range","bytes " + p.ToString() + "-" + ((long)(dataToRead - 1)).ToString() + "/" + dataToRead.ToString());                    
                }
                Response.AddHeader("Content-Length",((long)(dataToRead-p)).ToString());
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode(Request.ContentEncoding.GetBytes(filename)));                iStream.Position = p;
                dataToRead = dataToRead - p;
                // Read the bytes.
                while (dataToRead > 0)
                {
                    // Verify that the client is connected.
                    if (Response.IsClientConnected) 
                    {
                        // Read the data in buffer.
                        length = iStream.Read(buffer, 0, 10240);                        // Write the data to the current output stream.
                        Response.OutputStream.Write(buffer, 0, length);                        // Flush the data to the HTML output.
                        Response.Flush();                        buffer= new Byte[10240];
                        dataToRead = dataToRead - length;
                    }
                    else
                    {
                        //prevent infinite loop if user disconnects
                        dataToRead = -1;
                    }
                }
            }
            catch (Exception ex) 
            {
                // Trap the error, if any.
                Response.Write("Error : " + ex.Message);
            }
            finally
            {
                if (iStream != null) 
                {
                    //Close the file.
                    iStream.Close();
                }
                   Response.End();
            }

Answer 1

我认为
首先第一个要解决的是session问题
我用flashget试着下载链接，结果肯定要报Sessoin not found.Session may have expired

Answer 2

用SOCKET控件就可以做到，一定要集成到INTRWEB上吗？

Answer 3

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
用SOCKET控件就可以做到，一定要集成到INTRWEB上吗？
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
我接触dephi在网络应用太少了，可能想法比较单一。
我的这个intraweb实现断点续传想法是方便于 管理下载，防盗链，另涉及到下载时文件解密
不考虑这些的话一个WebApplication.SendFile('test.zip');就可以了.如果是你，你怎么设计呢?