FTP operations using FluentFTP

           

Scenario: Implement FTP solution using FluentFTP library

Solution:

Per fluentFTP documentation

FluentFTP is a fully managed FTP and FTPS library for .NET & .NET Standard, optimized for speed. It provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Automatic directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP transfers, UTF-8 support, Async/await support, Powershell support and more.

1. Add latest FluentFTP nuget package to the project
2. Create FluentFtp class to download/upload to FTP

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using System;
using System.IO;
using System.Net;
using FluentFTP;

namespace TestApp
{
    public class FluentFTPUtils
    {
        public void Download(Context context)
        {
            var ftpClient = new FtpClient
            {
                Host = _host,
                Credentials = new NetworkCredential { UserName = "{user}", Password = "{pass}" },
                Port = _port,
                DataConnectionType = _connectionType,
                DownloadDataType = FtpDataType.Binary,
                UploadDataType = FtpDataType.Binary,
                ConnectTimeout = _timeout,
                ReadTimeout = _rimeout,
                DataConnectionConnectTimeout = _dcTimeout,
                DataConnectionReadTimeout = _drTimeout
            }; ;

            ftpClient.Connect();

            ftpClient.SetWorkingDirectory(_workingDirectory);

            foreach (
                var file in
                ftpClient.GetListing(ftpClient.GetWorkingDirectory())
                    .Where(f => f.Type == FtpFileSystemObjectType.File && f.Name == "fileName")
                    .OrderBy(f => f.Modified))
            {
                Stream destStream = null;
                try
                {
                    ftpClient.Download(destStream, file.Name);
                }
                finally
                {
                    destStream?.Close();
                }

                if (delete)
                {
                    ftpClient.DeleteFile(file.Name);
                }
                else if (rename)
                {
                    ftpClient.MoveFile(file.Name, newFilename);

                }
            }

            CloseFtpConnection(ftpClient);
        }

        public void Upload(Context context)
        {

            var ftpClient = new FtpClient
            {
                Host = _host,
                Credentials = new NetworkCredential { UserName = "{user}", Password = "{pass}" },
                Port = _port,
                DataConnectionType = _connectionType,
                DownloadDataType = FtpDataType.Binary,
                UploadDataType = FtpDataType.Binary,
                ConnectTimeout = _timeout,
                ReadTimeout = _rimeout,
                DataConnectionConnectTimeout = _dcTimeout,
                DataConnectionReadTimeout = _drTimeout
            }; ;

            ftpClient.Connect();

            Stream inputStream = null;
            try
            {
                inputStream = document.CreateStream();
                ftpClient.Upload(inputStream, "fileName");
            }
            finally
            {
                inputStream?.Close();
            }
            CloseFtpConnection(ftpClient);
        }

        private void CloseFtpConnection(FtpClient ftpConnection)
        {
            if (ftpConnection != null)
            {
                ftpConnection.Dispose();
            }
        }
    }
}