private void OnNewConnection(IAsyncResult asyncResult)
{
System.Net.Sockets.Socket client;
try
{
client = _listenerSocket.EndAccept(asyncResult);
} catch (ObjectDisposedException) {
// ignore, happens during shutdown
return;
}
client.NoDelay = true;
_listenerSocket.BeginAccept(OnNewConnection, this);
switch (_sessionType)
{
case EnumSessionType.Telnet:
{
_logger.Info($"Accepting incoming Telnet connection from {client.RemoteEndPoint}...");
var session = new TelnetSession(_host, _logger, client, _configuration, _textVariableService);
_host.AddSession(session);
session.Start();
break;
}
case EnumSessionType.Rlogin:
{
if (((IPEndPoint)client.RemoteEndPoint).Address.ToString() != _configuration.RloginRemoteIP)
{
_logger.Info(
$"Rejecting incoming Rlogin connection from unauthorized Remote Host: {client.RemoteEndPoint}");
client.Close();
return;
}
_logger.Info($"Accepting incoming Rlogin connection from {client.RemoteEndPoint}...");
var session = new RloginSession(_host, _logger, client, _channelDictionary, _configuration, _textVariableService, _moduleIdentifier);
_host.AddSession(session);
session.Start();
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
private void OnNewConnection(IAsyncResult asyncResult)
{
System.Net.Sockets.Socket client = _listenerSocket.EndAccept(asyncResult);
client.NoDelay = true;
_listenerSocket.BeginAccept(OnNewConnection, this);
switch (_sessionType)
{
case EnumSessionType.Telnet:
{
_logger.Info($"Accepting incoming Telnet connection from {client.RemoteEndPoint}...");
var telnetSession = new TelnetSession(client);
break;
}
case EnumSessionType.Rlogin:
{
if (((IPEndPoint)client.RemoteEndPoint).Address.ToString() != _configuration["Rlogin.RemoteIP"])
{
_logger.Info(
$"Rejecting incoming Rlogin connection from unauthorized Remote Host: {client.RemoteEndPoint}");
client.Close();
client.Dispose();
return;
}
_logger.Info($"Accepting incoming Rlogin connection from {client.RemoteEndPoint}...");
var rloginSession = new RloginSession(client, _moduleIdentifier);
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
