public static void PrintDirectoryListing(Options.FtpParams ftpParams, string serverPath)
{
var ftpClient = PrepareFtpClient(ftpParams);
var listing = ftpClient.GetListing(serverPath);
var directories = listing.Where(l => l.Type == FtpFileSystemObjectType.Directory);
var files = listing.Where(l => l.Type == FtpFileSystemObjectType.File);
var links = listing.Where(l => l.Type == FtpFileSystemObjectType.Link);
//Console.WriteLine("\tDirectories");
foreach (var dir in directories)
{
Console.WriteLine($"{dir.Name}/");
}
//Console.WriteLine("\tLinks");
foreach (var link in links)
{
Console.WriteLine($"{link.Name}");
}
//Console.WriteLine("\tFiles");
foreach (var file in files)
{
Console.WriteLine($"{file.Size.ToString().PadRight(16)} {file.Name}");
}
}
public static void DownloadFile(Options.FtpParams ftpParams, string serverPath, string localPath, bool resume, int retries, int delay, long offset, CancellationToken downloadingCts)
{
//prepare file
var dataStream = (Stream)null;
if (resume)
{
if (File.Exists(localPath))
{
dataStream = File.Open(localPath, FileMode.Open);
offset = dataStream.Length;
dataStream.Position = dataStream.Length;
Console.WriteLine("Resuming from position " + offset);
}
else
{
throw new FileNotFoundException($"File {localPath} not exist!");
}
}
else
{
dataStream = File.Create(localPath);
}
//downloading
var origStreamStart = dataStream.Position;
var alreadyRetries = 0;
while (true)
{
try
{
var ftpClient = PrepareFtpClient(ftpParams);
DownloadToStream(ftpClient, dataStream, offset, serverPath, downloadingCts);
dataStream.Close();
break;
}
catch (Exception e)
{
var receivedBytesCount = dataStream.Position - origStreamStart;
Console.WriteLine($"Received total {receivedBytesCount} bytes");
if (retries == -1 || retries > alreadyRetries)
{
offset += receivedBytesCount;
Task.Delay(delay * 100, downloadingCts).Wait(downloadingCts);
Console.WriteLine("Retry");
alreadyRetries++;
}
else
{
dataStream.Close();
throw;
}
}
}
}
//upload
public static void UploadFile(Options.FtpParams ftpParams, string serverPath, string localPath, CancellationToken uploadingCts)
{
if (!File.Exists(localPath))
{
throw new FileNotFoundException($"File {localPath} not exist!");
}
var uplFileStream = File.OpenRead(localPath);
var ftpClient = PrepareFtpClient(ftpParams);
ftpClient.UploadAsync(uplFileStream, serverPath, progress: new FtpProgressHandler(uplFileStream), token: uploadingCts).Wait(uploadingCts);
}
private static FtpClient PrepareFtpClient(Options.FtpParams ftpParams)
{
var ftpClient = new FtpClient(ftpParams.Address, ftpParams.Port,
new NetworkCredential(ftpParams.Username, ftpParams.Password))
{
Encoding = ftpParams.Encoding,
UploadDataType = FtpDataType.Binary,
EncryptionMode = ftpParams.UseSsl ? FtpEncryptionMode.Explicit : FtpEncryptionMode.None,
SslProtocols = ftpParams.UseSsl ? SslProtocols.Tls : SslProtocols.None,
ValidateAnyCertificate = ftpParams.IgnoreCert
};
ftpClient.Connect();
return(ftpClient);
}
