public virtual void Close()
{
StopListener();
if (Client != null && !m_IsClosed)
{
try
{
Client.Shutdown(SocketShutdown.Both);
}
catch (Exception e)
{
m_Session.Logger.Error(e);
}
try
{
Client.Close();
}
catch (Exception e)
{
m_Session.Logger.Error(e);
}
finally
{
Client = null;
m_Session = null;
m_IsClosed = true;
OnClose();
}
}
}
internal static bool TryOpenDataConnection(FtpSession session, out DataConnection dataConnection)
{
dataConnection = null;
int tryPort = session.AppServer.FtpServiceProvider.GetRandomPort();
int previousPort = tryPort;
int tryTimes = 0;
IPAddress ipAddress = session.LocalEndPoint.Address;
while (true)
{
var listenSocket = TryListenSocketPort(ipAddress, tryPort);
if (listenSocket != null)
{
dataConnection = new DataConnection(session, listenSocket, tryPort);
return(true);
}
tryTimes++;
if (tryTimes > 5)
{
return(false);
}
tryPort = session.AppServer.FtpServiceProvider.GetRandomPort();
if (previousPort == tryPort)
{
return(false);
}
}
}
internal static bool TryOpenDataConnection(FtpSession session, int port, out DataConnection dataConnection)
{
// Issues the Active mode is connect, and not listen??
IPAddress ipAddress = session.RemoteEndPoint.Address;
dataConnection = new DataConnection(session, ipAddress, port);
return(true);
}
public DataConnection(FtpSession session, Socket listenSocket, int port)
{
m_Session = session;
m_Address = session.Config.Ip;
SecureProtocol = session.Context.DataSecureProtocol;
m_Listener = listenSocket;
m_Port = port;
}
public DataConnection(FtpSession session, IPAddress address, int port)
{
m_Session = session;
Address = session.Config.Ip;
SecureProtocol = session.Context.DataSecureProtocol;
m_Listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
m_ipAddress = address;
Port = port;
_dataConnectionType = DataConnectionType.Active;
}
internal static bool TryOpenDataConnection(FtpSession session, int port, out DataConnection dataConnection)
{
IPAddress ipAddress = session.LocalEndPoint.Address;
var listenSocket = TryListenSocketPort(ipAddress, port);
if (listenSocket != null)
{
dataConnection = new DataConnection(session, listenSocket, port);
return(true);
}
dataConnection = null;
return(false);
}
