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FtpWebRequest - TransferSpeed - Connection forcibly closed

I am upload large tar files about 10GB to the ftp server. It is taking a lot of time and throws the following error: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host.
I have referred to the following:
C# : FTP upload buffer size
Why is my ftp upload method so slow?
https://www.codeproject.com/Questions/204070/how-to-write-c-code-to-increase-the-ftp-file-uploa
The following is the code:
FileStream fs = null;
Stream rs = null;
try
{
string file = args[0].Replace("---"," ");
string ftpServer = args[1].ToString();
string uploadFileName = new FileInfo(file).Name;
string uploadUrl = ftpServer;
Console.WriteLine("Start Time: {0}", DateTime.Now);
Console.WriteLine("File Name: {0}",file);
fs = new FileStream(file, FileMode.Open, FileAccess.Read);
string ftpUrl = string.Format("{0}/{1}", uploadUrl, uploadFileName);
FtpWebRequest requestObj = FtpWebRequest.Create(ftpUrl) as FtpWebRequest;
requestObj.Timeout = -1; // <---- -1 is Infinite
requestObj.Method = WebRequestMethods.Ftp.UploadFile;
rs = requestObj.GetRequestStream();
byte[] buffer = new byte[4096];
//byte[] buffer = new byte[16000]; // <--- 16k
int read = 0;
while ((read = fs.Read(buffer, 0, buffer.Length)) != 0)
{
rs.Write(buffer, 0, read);
}
rs.Flush();
}
catch (Exception ex)
{
Console.WriteLine("File upload/transfer Failed.\r\nError Message:\r\n" + ex.Message);
}
finally
{
if (fs != null)
{
fs.Close();
fs.Dispose();
}
if (rs != null)
{
rs.Close();
rs.Dispose();
}
}
Console.WriteLine("End Time: {0}", DateTime.Now);
Console.WriteLine("Exiting the application.. press any key to continue");
Console.ReadLine();
UPDATE: I am uploading the file to FTP DropBox and No access to the logs. While trying to upload via clients like FileZilla the speed is faster. The limit of the dropbox is 300 GB. Is it possible to find the rate of transfer?
Please explain the solution as well for my understanding as I am a beginner.
Thanks in advance.

FileNotFoundException With FTP

I am trying to upload files more than one but I am just trying single fileupload for practice but I am getting file not found exception my task is as under.
private static void UploadFileToFtp(string source)
{
String ftpurl = #"ftp://ftp.yuvarukhisamaj.com/wwwroot/Shtri/"; //“#ftpurl”; // e.g. ftp://serverip/foldername/foldername
String ftpusername = "yuvarukh";//“#ftpusername”; // e.g. username
String ftppassword = "CXhV5Rzeu";//“#ftppassword”; // e.g. password
try
{
string filename = Path.GetFileName(source);
string ftpfullpath = ftpurl;
FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(ftpfullpath);
ftp.Credentials = new NetworkCredential(ftpusername, ftppassword);
ftp.KeepAlive = true;
ftp.UseBinary = true;
ftp.Method = WebRequestMethods.Ftp.UploadFile;
FileStream fs = File.OpenRead(source);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
Stream ftpstream = ftp.GetRequestStream();
ftpstream.Write(buffer, 0, buffer.Length);
ftpstream.Close();
}
catch (Exception ex)
{
throw ex;
}
}
protected void Btn1_Click(object sender, EventArgs e)
{
String sourcefilepath = FileUpload1.FileName;
UploadFileToFtp(sourcefilepath);
}
Error Details is An Exception of type “System.IO.FileNotFoundException” Occurred in Bshadow.DLL but was not handle in usercode.
Additional information: could not find file C:\Programfiles\Microsoft Visual Studio 8\IDE\dd.jpg
How can I upload multiple files with fileUploaders Via FTP?

you need to use ad ftpurl address the folder/file.ext to upload
Also you use a simple exception you must handling exactly exception not generally one.
in example your full path for ftp must be :
#"ftp://ftp.yuvarukhisamaj.com/wwwroot/Shtri/" + filename + ext;
//ftp://ftp.yuvarukhisamaj.com/wwwroot/Shtri/yourimage.ext;
that fix your issue.
it is a common error in ftpclass of net.

C# - Download Directory - FTP

I'm trying to download a directory, using FTP in a C# application. I basically need to take a remote dir, and move it, and its contents into a local dir.
Here is the function I'm currently using, and what the log output and errors are. The sample I'm referencing is for getting files, and possibly not directories:
private void Download(string file, string destination)
{
try
{
string getDir = "ftp://" + ftpServerIP + ftpPath + file + "/";
string putDir = destination + "\\" + file;
Debug.WriteLine("GET: " + getDir);
Debug.WriteLine("PUT: " + putDir);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create
(new Uri(getDir));
reqFTP.Credentials = new NetworkCredential(ftpUserID,
ftpPassword);
reqFTP.UseBinary = true;
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.Proxy = null;
reqFTP.UsePassive = false;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream responseStream = response.GetResponseStream();
FileStream writeStream = new FileStream(putDir, FileMode.Create);
int Length = 2048;
Byte[] buffer = new Byte[Length];
int bytesRead = responseStream.Read(buffer, 0, Length);
while (bytesRead > 0)
{
writeStream.Write(buffer, 0, bytesRead);
bytesRead = responseStream.Read(buffer, 0, Length);
}
writeStream.Close();
response.Close();
}
catch (WebException wEx)
{
MessageBox.Show(wEx.Message, "Download Error");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Download Error");
}
}
Debug:
GET: ftp://I.P.ADDR/SOME_DIR.com/members/forms/THE_FOLDER_TO_GET/
PUT: C:\Users\Public\Documents\iMacros\Macros\THE_FOLDER_TO_WRITE
A first chance exception of type 'System.Net.WebException' occurred in System.dll
MessageBox Output:
The requested URI is invalid for this FTP command.

The slash on the end of the getDir indicates a directory - can you use mget and pass a path like that ends in "/*"?

Program hangs on FtpWebResponse

First time poster, long-time reader. I have a really annoying problem thats been getting on my nerves. Ive got a program set up so I listen for new files on an FTP server, if theres a new file I download it. From there I work on some of the information in the file, etc. My problem comes when I run through my sequence the second time. That is, on the first file I download everything is totally fine, but as soon as a new file gets detected and my program tries downloading it, my program just hangs.
private static void DownloadFile(string s)
{
try
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://blabla.com/"+s);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential("xxx" ,"zzz");
using (FtpWebResponse partResponse = (FtpWebResponse)request.GetResponse())
{
Stream partReader = partResponse.GetResponseStream();
byte[] buffer = new byte[1024];
FileInfo fi = new FileInfo(path);
FileStream memStream = fi.Create();
while (true)
{
int bytesRead = partReader.Read(buffer, 0, buffer.Length - 1);
if (bytesRead == 0)
break;
memStream.Write(buffer, 0, bytesRead);
}
partResponse.Close();
memStream.Close();
}
Console.WriteLine(DateTime.Now + " file downloaded");
MoveFileToInProgress(s);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
The line it hangs on is this one:
using (FtpWebResponse partResponse = (FtpWebResponse)request.GetResponse())
The reason my method here is static is because Im just running it in a different project to test it.. My question here is, how come it only ever dies on the second file? Ive been staring myself blind for hours now!

I ran into this problem as well... try finishing your request first and then closing it before trying to retrieve the response. That worked for me (actually tried it after reading comment by MartinNielsen). Here is what I did.
// connect to the ftp site
FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(ftpUri);
ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;
ftpRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
// setting proxy to null so that it does not go through the proxy
ftpRequest.Proxy = null;
// get file information
StreamReader fileStream = new StreamReader(filePath);
byte[] fileBytes = Encoding.UTF8.GetBytes(fileStream.ReadToEnd());
ftpRequest.ContentLength = fileBytes.Length;
fileStream.Close();
// open connection to ftp site
Stream ftpRequestStream = ftpRequest.GetRequestStream();
// write the file to the stream
ftpRequestStream.Write(fileBytes, 0, fileBytes.Length);
// close the stream
ftpRequestStream.Close();
// get the response from the server
FtpWebResponse ftpUploadResponse = (FtpWebResponse)ftpRequest.GetResponse();
string result = ftpUploadResponse.StatusDescription;
// close response
ftpUploadResponse.Close();
// return response to calling code
return result;
Here are a couple of the resources that I used when writing this code (won't let me post more than 2, there were more)
How to: Upload Files with FTP
Uploading a file -- "The requested URI is invalid for this FTP command"

I'm not expert on C# but I use this code to download files from my ftp:
public void Download(string filename)
{
// I try to download five times before crash
for (int i = 1; i < 5; i++)
{
try
{
FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(Global.Path + "/" + filename);
ftp.Credentials = new NetworkCredential(User, Pass);
ftp.KeepAlive = false;
ftp.Method = WebRequestMethods.Ftp.DownloadFile;
ftp.UseBinary = true;
ftp.Proxy = null;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
string LocalDirectory = Application.StartupPath.ToString() + "/downloads/" + filename;
using (FileStream fs = new FileStream(LocalDirectory, FileMode.Create, FileAccess.Write, FileShare.None))
using (Stream strm = ftp.GetResponse().GetResponseStream())
{
contentLen = strm.Read(buff, 0, buffLength);
while (contentLen != 0)
{
fs.Write(buff, 0, contentLen);
contentLen = strm.Read(buff, 0, buffLength);
}
}
Process.Start(LocalDirectory);
break;
}
catch (Exception exc)
{
if (i == 5)
{
MessageBox.Show("Can't download, try number: " + i + "/5 \n\n Error: " + exc.Message,
"Problem downloading the file");
}
}
}
}
Tell me if it works for you :)

IOEXCEPTION in C# compact framework when saving image

I'm saving an image from a web request and something really weird is happening. On roughly half of the 8,000 images I'm downloading I get IOEXCEPTION errors:
ERROR_ACCESS_DENIED (5)
INVALID_PARAMETER (87)
Before I save the file using file.open, I check to make sure the file does not exist. The exception is thrown at this line of code:
fileStream = File.Open(destination, FileMode.Create, FileAccess.Write, FileShare.None);
Below is the code:
public static bool DownloadFile(string url, string destination)
{
bool success = false;
System.Net.HttpWebRequest request = null;
System.Net.WebResponse response = null;
Stream responseStream = null;
FileStream fileStream = null;
try
{
request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
request.Method = "GET";
request.Timeout = 100000; // 100 seconds
request.Proxy = System.Net.GlobalProxySelection.GetEmptyWebProxy();
response = request.GetResponse();
responseStream = response.GetResponseStream();
fileStream = File.Open(destination, FileMode.Create, FileAccess.Write, FileShare.None);
//fileStream = File.Create(destination);
// read up to ten kilobytes at a time
int maxRead = 10240;
byte[] buffer = new byte[maxRead];
int bytesRead = 0;
int totalBytesRead = 0;
// loop until no data is returned
while ((bytesRead = responseStream.Read(buffer, 0, maxRead)) > 0)
{
totalBytesRead += bytesRead;
fileStream.Write(buffer, 0, bytesRead);
}
// we got to this point with no exception. Ok.
success = true;
}
catch (System.Net.WebException we)
{
// something went terribly wrong.
success = false;
//MessageBox.Show(exp.ToString());
writeErrFile(we.ToString(), url);
//Debug.WriteLine(exp);
}
catch (System.IO.IOException ie)
{
// something went terribly wrong.
success = false;
//MessageBox.Show(ie.InnerException.ToString());
writeErrFile(ie.ToString(), destination + " -- " + url);
//Debug.WriteLine(exp);
}
catch (Exception exp)
{
// something went terribly wrong.
success = false;
//MessageBox.Show(exp.ToString());
writeErrFile(exp.ToString(), destination + " -- " + url);
//Debug.WriteLine(exp);
}
finally
{
// cleanup all potentially open streams.
if (null != responseStream)
responseStream.Close();
if (null != response)
response.Close();
if (null != fileStream)
fileStream.Close();
}
// if part of the file was written and the transfer failed, delete the partial file
if (!success && File.Exists(destination))
File.Delete(destination);
return success;
}
I've been stuck on this for a couple of days. Any help would be appreciated in unimaginable orders of magnitude.

Use file.exists() to check if the file exists and file.create or file.openwrite to write the file.
From your code I can't see how you are checking the file exists.