/// <summary>
/// Receive TcpClient from remote computer.
/// </summary>
/// <returns>Accepted TcpClient</returns>
/// <exception cref="Exception">Thrown if TcpListener not started.</exception>
public TcpClient AcceptTcpClient(int timeout = -1)
{
if (StateMachine == null)
{
new Exception("TcpListener is not started.");
}
if (StateMachine.Status == Status.CLOSED) // if TcpListener already accepted client, remove old one.
{
Tcp.RemoveConnection(StateMachine.LocalEndPoint.Port, StateMachine.RemoteEndPoint.Port, StateMachine.LocalEndPoint.Address, StateMachine.RemoteEndPoint.Address);
Start();
}
if (timeout == -1)
{
while (StateMachine.WaitStatus(Status.ESTABLISHED) != true)
{
;
}
}
else
{
while (StateMachine.WaitStatus(Status.ESTABLISHED, timeout) != true)
{
;
}
}
return(new TcpClient(StateMachine));
}
/// <summary>
/// Stop listening for new TCP connections.
/// </summary>
/// <exception cref="OverflowException">Thrown on fatal error (contact support).</exception>
/// <exception cref="Sys.IO.IOException">Thrown on IO error.</exception>
/// <exception cref="Exception">Thrown if TcpListener not started.</exception>
public void Stop()
{
if (StateMachine == null)
{
new Exception("TcpListener is not started.");
}
if (StateMachine.Status == Status.LISTEN)
{
Tcp.RemoveConnection(StateMachine.LocalEndPoint.Port, StateMachine.RemoteEndPoint.Port, StateMachine.LocalEndPoint.Address, StateMachine.RemoteEndPoint.Address);
StateMachine = null;
}
}
/// <summary>
/// Close connection.
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">Thrown on fatal error (contact support).</exception>
/// <exception cref="Exception">Thrown if TCP Status is CLOSED.</exception>
public void Close()
{
if (StateMachine.Status == Status.ESTABLISHED)
{
StateMachine.SendEmptyPacket(Flags.FIN | Flags.ACK);
StateMachine.TCB.SndNxt++;
StateMachine.Status = Status.FIN_WAIT1;
if (StateMachine.WaitStatus(Status.CLOSED, 5000) == false)
{
throw new Exception("Failed to close TCP connection!");
}
}
Tcp.RemoveConnection(StateMachine.LocalEndPoint.Port, StateMachine.RemoteEndPoint.Port, StateMachine.LocalEndPoint.Address, StateMachine.RemoteEndPoint.Address);
}