Set timeout for Uploading a file

Hi,

I am trying to upload a file of 10 MB to SFTP using SSH.net but my program got stuck, if I try to upload same file manually I am getting below error :
Error: error while writing: received failure with description 'Failure'

I am not getting any error and the program is just stuck at uploading the file, so I appreciate your answers for below questions :

• Why no error is returned.
• How can I set the timeout for uploading a file, so in case uploading the file took more than 1 minute and I want to get timeout message ?

Snippet of my code:

     var con = # ConnectionInfo
     con.Timeout = new TimeSpan(0, 0, 1, 0); # connection Timeout
      using (var client = new SftpClient(con))
                {
                    var fileStream = new FileStream(filename, FileMode.Open);
                    string uploadFileName = ftpAcc.UploadPath; 
                    client.UploadFile(fileStream, uploadFileName, true, null);
                    client.Disconnect();
                }

Non vengono indicati file o test del repository. Inizia riproducendo l'upload con ConnectionInfo.Timeout e SftpClient.UploadFile dallo snippet fornito, quindi traccia come viene gestito il timeout; il lavoro è terminato quando un upload che supera il limite configurato segnala un timeout invece di rimanere bloccato.