/// <summary>
/// Closes the socket if it is open or listening.
/// </summary>
public void Close()
{
if (closing || Parent.State == State.Closed)
{
return;
}
closing = true;
try
{
var oldState = Parent.State;
if (oldState == State.Connected || oldState == State.Listening)
{
Parent.ChangeState(State.Closing);
if (socketStream != null)
{
socketStream.Dispose(); // Should take care of MOST instances, this Dispose also closes the socket.
}
else if (socket != null && oldState == State.Listening)
{
socket.Close(); // Listeners don't create a stream, so this handles those
}
else if (socket != null && socket.IsConnected)
{
// Edge cases and errors could potentially leave us with a connected socket but without a stream.
socket.Shutdown(SocketShutdown.Both);
socket.Close();
}
socketStream = null;
socket = null;
}
Parent.ChangeState(State.Closed);
if (oldState == State.Connected)
{
Parent.OnDisconnected();
}
}
catch (Exception ex)
{
Parent.OnErrorReceived(Parent, ex.AsEventArgs());
}
finally
{
closing = false;
}
}
