Download files from FTP with FtpResponse on ASP.NET MVC application
it woks for large files!
[HttpGet]
public virtual void Download(string g)
{
Uri uri = (Uri)Session["file_full_path"];
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uri);
request.Credentials = new NetworkCredential("username", "password");
request.UsePassive = true;
request.UseBinary = true;
request.EnableSsl = false;
//find size
request.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse responseSize = (FtpWebResponse)request.GetResponse();
long size = responseSize.ContentLength;
responseSize.Close();
FtpWebRequest request2 = (FtpWebRequest)WebRequest.Create(uri);
request2.Credentials = new NetworkCredential("username", "password");
request2.UsePassive = true;
request2.UseBinary = true;
request2.EnableSsl = false;
request2.Method = WebRequestMethods.Ftp.DownloadFile;
FtpWebResponse response = (FtpWebResponse)request2.GetResponse();
Stream dfileResponseStream = response.GetResponseStream();
Response.ContentType = System.Net.Mime.MediaTypeNames.Application.Octet;
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.Charset = "ISO-8859-9";
Response.AddHeader("content-Disposition", "attachment; filename=" + Path.GetFileName(uri.LocalPath));
while (size > 0)
{
if (Response.IsClientConnected)
{
byte[] buffer = new Byte[10000];
int length = dfileResponseStream.Read(buffer, 0, 10000);// stream.Read(buffer, 0, 10000);
Response.OutputStream.Write(buffer, 0, length);
Response.Flush();
size = size - length;
}
else
{
size = -1;
}
}
response.Close();
}
