public void ChangeWorkingDirectory(string pathname)
{
// Check opened connection
if (!Connected)
{
throw new FtpNotConnectedException();
}
// Send command
var reply = SendCommand(FtpCommands.CWD(pathname));
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.RequestedFileActionCompleted)
{
throw new FtpException(reply);
}
}
public void Open()
{
ConnectionStatus = FtpConnectionStatus.Connecting;
client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint remoteEP;
try
{
remoteEP = new IPEndPoint(Dns.GetHostEntry(RemoteHost).AddressList[0], remotePort);
}
catch (SocketException ex)
{
ConnectionStatus = FtpConnectionStatus.NotConnected;
Connected = false;
throw new Exception("Can't translate domain name to IP adress", ex);
}
try
{
this.client_socket.Connect(remoteEP);
}
catch (Exception ex)
{
ConnectionStatus = FtpConnectionStatus.NotConnected;
Connected = false;
throw new Exception("Can't connect to remote server", ex);
}
FtpReply reply = null;
try
{
reply = ReadReply();
}
catch (Exception ex)
{
Close();
throw new FtpException(FtpReplyCode.OK, reply.Reply, ex);
}
if (reply.ReplyCode != FtpReplyCode.ServiceReadyForNewUser)
{
Close();
throw new FtpException(reply);
}
ConnectionStatus = FtpConnectionStatus.LogingIn;
reply = SendCommand(FtpCommands.USER(this.remoteUserName));
if (reply.ReplyCode != FtpReplyCode.NeedPassword && reply.ReplyCode != FtpReplyCode.UserLoggedIn)
{
Close();
throw new FtpException(reply);
}
if (reply.ReplyCode != FtpReplyCode.UserLoggedIn)
{
reply = SendCommand(FtpCommands.PASS(this.remotePassword));
if (reply.ReplyCode != FtpReplyCode.UserLoggedIn && reply.ReplyCode != FtpReplyCode.CommandNotImplementedSuperfluousAtThisSite)
{
Close();
throw new FtpException(reply);
}
}
Connected = true;
ConnectionStatus = FtpConnectionStatus.Busy;
SendCommand(FtpCommands.CWD(this.remotePath));
ConnectionStatus = FtpConnectionStatus.Ready;
ConnectionOpened(this, new EventArgs());
}
