private string DownloadFTPFile(string remoteFtpPath, string localPath, string username, string password)
{
string localDestinationPath = string.Empty;
try
{
localDestinationPath = iOHelper.GetLocalDestinationPath(remoteFtpPath, localPath);
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(remoteFtpPath);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(username, password);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
var bufferSizeConfigValue = ConfigurationManager.AppSettings["BufferSize"];
logger.AddInformationLog($"BufferSize config value: {bufferSizeConfigValue}");
var bufferSize = !string.IsNullOrWhiteSpace(bufferSizeConfigValue) ? Convert.ToInt32(bufferSizeConfigValue) : 2048;
using (FileStream writer = new FileStream(localDestinationPath, FileMode.Create))
{
byte[] buffer = new byte[bufferSize];
int readCount = responseStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
writer.Write(buffer, 0, readCount);
readCount = responseStream.Read(buffer, 0, bufferSize);
}
}
logger.AddInformationLog($"Download file {remoteFtpPath} completed");
response.Close();
return(localDestinationPath);
}
catch (Exception ex)
{
var fileInfo = new FileInfo(localDestinationPath);
if (fileInfo.Exists)
{
File.Delete(fileInfo.FullName);
}
logger.AddInformationLog($"Download file {remoteFtpPath} didn't complete");
throw;
}
}