C# FTP and windows services

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Hello

I want to do a service in C# and my service download file on a FTP

My code :

C#

public string[] directoryListSimple(ITEM Line, string directory)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + directory);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                ftpRequest.UseBinary = true;
                ftpRequest.UsePassive = false;
                ftpRequest.KeepAlive = true;
                /* Specify the Type of FTP Request */
                ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Establish Return Communication with the FTP Server */
                ftpStream = ftpResponse.GetResponseStream();
                /* Get the FTP Server's Response Stream */
                StreamReader ftpReader = new StreamReader(ftpStream);
                /* Store the Raw Response */
                string directoryRaw = null;
                /* Read Each Line of the Response and Append a Pipe to Each Line for Easy Parsing */
                try
                {
                    while (ftpReader.Peek() != -1)
                    {
                        directoryRaw += ftpReader.ReadLine() + "|";
                    }
                }
                catch (Exception ex)
                {
                    Line.ERROR = "TRUE";
                    CL_TRAVAIL.Instance.LOG("ERROR 2 = " + ex.ToString());
                }
                ftpReader.Close();
                ftpStream.Close();
                ftpResponse.Close();
                ftpRequest = null;

                /* Resource Cleanup */
                /* Return the Directory Listing as a string Array by Parsing 'directoryRaw' with the Delimiter you Append (I use | in This Example) */
                try
                {
                    string[] directoryList = directoryRaw.Split("|".ToCharArray());
                    Line.ERROR = "FASLE";
                    return directoryList;
                }
                catch (Exception ex)
                {
                    Line.ERROR = "TRUE";
                    CL_TRAVAIL.Instance.LOG("ERROR 2 = " + ex.ToString());
                }
                /* Return an Empty string Array if an Exception Occurs */
                return new string[] { "" };
            }
            catch (Exception ex)
            {
                Line.ERROR = "TRUE";
                CL_TRAVAIL.Instance.LOG("ERROR 3 = " + ex.ToString());
                return new string[] { "" };
            }

        }

My error is at this line : ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();

<pre>
10:40:29 - ERROR 3 = System.Net.WebException: La connexion sous-jacente a été fermée : Une erreur inattendue s'est produite lors de la réception.
   à System.Net.FtpWebRequest.CheckError()
   à System.Net.FtpWebRequest.SyncRequestCallback(Object obj)
   à System.Net.CommandStream.Abort(Exception e)
   à System.Net.CommandStream.CheckContinuePipeline()
   à System.Net.FtpDataStream.System.Net.ICloseEx.CloseEx(CloseExState closeState)
   à System.Net.FtpDataStream.Dispose(Boolean disposing)
   à System.IO.Stream.Close()
   à System.IO.StreamReader.Dispose(Boolean disposing)
   à WindowsService.FTP.directoryListSimple(ITEM Line, String directory)

What I have tried:

Hello

I use my code in windows form application and it work, but when i use it in my service application it does not work.

Somebody have an idea

Thank you

Posted 3-Apr-18 23:57pm

Laurent mortroux

Updated 3-May-18 4:48am

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Comments

F-ES Sitecore 4-Apr-18 6:04am

It looks like there is a problem connecting to the ftp server, it could be a network firewall issue, it could be the ftp server isn't running, it could be permissions. There is no way we can tell you why a server we have no access to can't connect to an ftp server we also have no access to. I'd start by trying to connect to the ftp server from the other server using command line tools and seeing if that at least works.

Member 2521084 4-Apr-18 6:11am

what is the account of the service ?

Laurent mortroux 4-Apr-18 6:11am

Thank you
yes i desactivate my firewall , but why it's work in windows form pallication and dont work in service application both on th same computeur.

But my application work with my accountand service with systèm account

Member 2521084 4-Apr-18 6:14am

meaning "local" system account?. Try setting it up under your admin account

Laurent mortroux 4-Apr-18 6:37am

i try with admin account i have the same probleme.

12:23:48 - ERROR 3 = System.Net.WebException: La connexion sous-jacente a été fermée : Une erreur inattendue s'est produite lors de la réception.
   à System.Net.FtpWebRequest.CheckError()
   à System.Net.FtpWebRequest.SyncRequestCallback(Object obj)
   à System.Net.CommandStream.Abort(Exception e)
   à System.Net.CommandStream.CheckContinuePipeline()
   à System.Net.FtpDataStream.System.Net.ICloseEx.CloseEx(CloseExState closeState)
   à System.Net.FtpDataStream.Dispose(Boolean disposing)
   à System.IO.Stream.Close()
   à System.IO.StreamReader.Dispose(Boolean disposing)
   à WindowsService.FTP.directoryListSimple(ITEM Line, String directory)

Member 2521084 4-Apr-18 7:09am

normally the admin account has network access. To be sure test it again with the network-account instead. To be sure, you have the right username and password in the line "ftpRequest.Credentials = new NetworkCredential(user, pass);"?
hth

Laurent mortroux 4-Apr-18 8:30am

hello
Yes i use this ftp credentiel whith filezila and it the same file config for the service and application form1
Thank you

Laurent mortroux 4-Apr-18 8:34am

I share the same class between my project to be shure i have the same code

3 solutions

Solution 3

Try setting the ftpwebrequest.timeout value to -1 (unlimited). The MS docs say it's set to that, but it's actually set to 100000 (100 seconds).

Posted 4-Apr-18 2:57am

#realJSOP

Solution 5

the soluce working with me

try
            {

                FtpWebRequest ftpReq = (FtpWebRequest)WebRequest.Create(host + "/" + remoteFile);
                ftpReq.UseBinary = true;
                ftpReq.Method = WebRequestMethods.Ftp.UploadFile;
                ftpReq.Credentials = new NetworkCredential(user, pass);

                byte[] b = File.ReadAllBytes(localFile);

                ftpReq.ContentLength = b.Length;
                using (Stream s = ftpReq.GetRequestStream())
                {
                    s.Write(b, 0, b.Length);
                }

                FtpWebResponse ftpResp = (FtpWebResponse)ftpReq.GetResponse();

                if (ftpResp != null)
                {
                    OUTILS.LOG("MSG FTP= " + ftpResp.StatusDescription.ToString());
                }
            }
            catch (Exception e)
            {
                OUTILS.LOG("ERROR START");
                OUTILS.LOG("MSG = " + e.ToString());
                OUTILS.LOG("ERROR END");
            }

Posted 3-May-18 4:49am

Laurent mortroux

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Laurent mortroux · Accepted Answer · 2018-04-04T05:43:00

I use this and it's work i don't undurstand why???

public List<string> directoryListSimple(ITEM Line, string directory)
        {

            List<string> directoryList = new List<string>();

            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(host + "/" + directory);
            request.Method = WebRequestMethods.Ftp.ListDirectory;

            // This example assumes the FTP site uses anonymous logon.  
            request.Credentials = new NetworkCredential(user, pass);
            FtpWebResponse response = (FtpWebResponse)request.GetResponse();
            Stream responseStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(responseStream);
            //Console.WriteLine(reader.ReadToEnd());

            while (!reader.EndOfStream)
            {
                directoryList.Add(reader.ReadLine());
            }
            Console.WriteLine("Directory List Complete, status {0}", response.StatusDescription);

            reader.Close();
            responseStream.Close();
            response.Close();
            request = null;
            reader=null;
            responseStream=null;
            response = null;
            
            return directoryList;
        }