private async Task ConnectAsync()
{
TcpListener listener = new TcpListener(ClientIp, ClientPort);
listener.Start();
Client = await listener.AcceptTcpClientAsync();
Client.NoDelay = true;
Server = new TcpClient
{
NoDelay = true
};
await Server.ConnectAsync(ServerIp, ServerPort);
listener.Stop();
IsConnected = true;
if (Connected != null)
{
Delegate[] delegates = Connected.GetInvocationList();
foreach (Func <Task> t in delegates)
{
try
{
await t().ConfigureAwait(false);
}
catch { }
}
}
ClientTask = Task.Factory.StartNew(() => InterceptAsync(Client, Server), TaskCreationOptions.LongRunning);
ServerTask = Task.Factory.StartNew(() => InterceptAsync(Server, Client), TaskCreationOptions.LongRunning);
}
private void ConnectThread()
{
IPEndPoint endpoint;
FTPResponse response;
m_cmdsocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
try
{
IPAddress address = IPAddress.Parse(m_host);
endpoint = new IPEndPoint(address, m_port);
}
catch (System.FormatException)
{
try
{
IPAddress address = Dns.GetHostEntry(m_host).AddressList[0];
//IPAddress address = Dns.Resolve(m_host).AddressList[0];
endpoint = new IPEndPoint(address, m_port);
}
catch (SocketException)
{
return;
}
}
// make the connection
try
{
m_cmdsocket.Connect(endpoint);
}
catch (Exception)
{
return;
}
// check the result
response = ReadResponse();
if (response.ID != 220)
{
m_cmdsocket.Close();
m_cmdsocket = null;
if (!m_exceptions)
{
return;
}
else
{
m_connected = false;
return;
}
}
// set the user id
response = SendCommand("USER " + m_uid, false);
// check the response
if (!((response.ID == 331) || (response.ID == 230)))
{
m_cmdsocket.Close();
m_cmdsocket = null;
Disconnect();
if (!m_exceptions)
{
return;
}
else
{
m_connected = false;
return;
}
}
// if a PWD is required, send it
if (response.ID == 331)
{
response = SendCommand("PASS " + m_pwd, false);
if (!((response.ID == 202) || (response.ID == 230)))
{
m_cmdsocket.Close();
m_cmdsocket = null;
Disconnect();
m_connected = false;
return;
}
}
// get the server type
response = SendCommand("SYST", false);
if (response.Text.ToUpper().IndexOf("UNIX") > -1)
{
m_server = FTPServerType.Unix;
}
else if (response.Text.ToUpper().IndexOf("WINDOWS") > -1)
{
m_server = FTPServerType.Windows;
}
else
{
m_server = FTPServerType.Unknown;
}
m_connected = true;
if (Connected != null)
{
foreach (FTPConnectedHandler fh in Connected.GetInvocationList())
{
fh(this);
}
}
}
