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Resuming downloading

دوشنبه, 04 فروردین 1399 23:28

Resuming downloading

سلام دوستان من از این کد زیر استفاده کردم برای تبدیل لینک خارج کشور به لینک داخلی و کار میکنه فقط یه مشکل داره که Resuming downloading نداره که خودم فکر میکنم مشکل هدر داره ولی نمیتونم 

چطور درستش کنم ممنون میشم کمک کنید


            string url = "http://dlto.gfx1.ir/Afterx/31398/Modern-And-Simple-Gfx1.ir.zip";


            Uri uri = new Uri(url);
            string filename = Path.GetFileName(uri.LocalPath);

            //Create a stream for the file
            Stream stream = null;

            //This controls how many bytes to read at a time and send to the client
            int bytesToRead = 10000;

            // Buffer to read bytes in chunk size specified above
            byte[] buffer = new Byte[bytesToRead];

            // The number of bytes read
            try
            {
                //Create a WebRequest to get the file
                HttpWebRequest fileReq = (HttpWebRequest)HttpWebRequest.Create(uri);

                //Create a response for this request
                HttpWebResponse fileResp = (HttpWebResponse)fileReq.GetResponse();

                if (fileReq.ContentLength > 0)
                    fileResp.ContentLength = fileReq.ContentLength;




                //Get the Stream returned from the response
                stream = fileResp.GetResponseStream();

                // prepare the response to the client. resp is the client Response
                var resp = HttpContext.Current.Response;
               
                //Indicate the type of data being sent
                resp.ContentType = "application/octet-stream";


                //Name the file 
                resp.AddHeader("Content-Disposition:", "attachment; filename=\"" + filename + "\"");
                resp.AddHeader("Content-Length", fileResp.ContentLength.ToString());


               



                int length;
                do
                {
                    // Verify that the client is connected.
                    if (resp.IsClientConnected)
                    {
                        // Read data into the buffer.
                        length = stream.Read(buffer, 0, bytesToRead);

                        // and write it out to the response's output stream
                        resp.OutputStream.Write(buffer, 0, length);

                        // Flush the data
                        resp.Flush();

                        //Clear the buffer
                        buffer = new Byte[bytesToRead];
                    }
                    else
                    {
                        // cancel the download if client has disconnected
                        length = -1;
                    }
                }


                while (length > 0); //Repeat until no data is read
            }
            finally
            {
                if (stream != null)
                {
                    //Close the input stream
                    stream.Close();
                }
            }

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