/// <summary>
/// This method is just used to make a new connection with NGRID server.
/// It receives response of register message and adds communicator to Communicators if successfuly registered.
/// </summary>
/// <param name="sender">Creator object of event</param>
/// <param name="e">Event arguments</param>
private void Communicator_MessageReceived(object sender, MessageReceivedFromCommunicatorEventArgs e)
{
try
{
//Message must be NGRIDOperationResultMessage
var message = e.Message as NGRIDOperationResultMessage;
if (message == null)
{
throw new NGRIDException("First message must be NGRIDOperationResultMessage");
}
//Check if remote NGRID server accepted connection
if(!message.Success)
{
throw new NGRIDException("Remote NGRID server did not accept connection.");
}
//Unregister from event and add communicator to Communicators list.
e.Communicator.MessageReceived -= Communicator_MessageReceived;
try
{
AddCommunicator(e.Communicator);
}
catch (Exception ex)
{
Logger.Warn(ex.Message, ex);
e.Communicator.Stop(false);
}
}
catch (Exception ex)
{
Logger.Warn("Can not connected to remote NGRID server: '" + Name + "'. Connection is being closed.");
Logger.Warn(ex.Message, ex);
try
{
e.Communicator.Stop(false);
}
catch (Exception ex2)
{
Logger.Warn(ex2.Message, ex2);
}
}
finally
{
_reconnectingCommunicator = null;
}
}
/// <summary>
/// Creates a new TCPCommunicator to communicate with NGRID server.
/// </summary>
private void ConnectToServer()
{
var ip = IPAddress.Parse(_ipAddress);
if (ip == null)
{
throw new NGRIDException("IP address is not valid: " + _ipAddress);
}
var socket = GeneralHelper.ConnectToServerWithTimeout(new IPEndPoint(ip, _port), 10000); //10 seconds
if (!socket.Connected)
{
throw new NGRIDException("TCP connection can not be established.");
}
//Create communicator object.
_reconnectingCommunicator = new TCPCommunicator(socket, CommunicationLayer.CreateCommunicatorId());
//Register MessageReceived event to receive response of Register message
_reconnectingCommunicator.MessageReceived += Communicator_MessageReceived;
//Start communicator and send a register message
_reconnectingCommunicator.Start();
_reconnectingCommunicator.SendMessage(new NGRIDRegisterMessage
{
CommunicationWay = CommunicationWays.SendAndReceive,
CommunicatorType = CommunicatorTypes.NgridServer,
Name = Settings.ThisServerName,
Password = "" //Not implemented yet
});
}