private Messages.MESSAGE DeSerialize(byte[] received)
{
IntPtr ip = Marshal.AllocHGlobal(received.Length); //allocate unmanaged memory
Marshal.Copy(received, 0, ip, received.Length); //copy the byte[] to the unmanaged memory
Messages.MESSAGE structure = (Messages.MESSAGE)Marshal.PtrToStructure(ip, typeof(Messages.MESSAGE)); //Marshal the unmanaged memory contents to the Message_PDU structure
Marshal.FreeHGlobal(ip); //free unmanaged memory
return(structure);
}
private void periodicActivityCheck(object myObject, EventArgs myEventArgs)
{
//ACCEPT CONNECTIONS
Socket tempSocket = tcp.tcp_acceptConnection();
if (tempSocket != null)
{
Client client = new Client();
client.ConnectionSocket = tempSocket;
ConnectedClients.Add(client);
txt_clients.Text = ConnectedClients.Count.ToString();
}
//RECIEVE MESSAGES
for (int i = 0; i < ConnectedClients.Count; i++)
{
Messages.MESSAGE msg = tcp.receiveMessage(ConnectedClients[i].ConnectionSocket);
#region MESSAGE DECODER
switch (msg.msgID)
{
//Handle Error Message (Closed connection)
case -1:
ConnectedClients.RemoveAt(i);
txt_clients.Text = ConnectedClients.Count.ToString();
txt_output.AppendText("Player Disconnected \n");
updatePlayersList();
break;
case 0:
break;
//Initialise player
case 1:
decoder.initialiseClient(msg, ConnectedClients[i]);
updatePlayersList();
decoder.updateAllPlayersInfo();
break;
//Request to invite player recieved
case 4:
txt_output.AppendText("recieved request \n");
decoder.inviteClient(ConnectedClients[i].ClientID, msg);
break;
//invitation response recieved
case 6:
decoder.invitationResponse(msg);
break;
default: //pass message to appriopriate game sessession
getGameSession(msg.gameSession).getMessage(msg, ConnectedClients[i].ClientID);
break;
}
#endregion MESSAGE DECODER
}
}
public Messages.MESSAGE receiveMessage(Socket clientConnectionSocket)
{
Messages.MESSAGE msg = new Messages.MESSAGE();
try
{
EndPoint remoteEndPoint = (EndPoint)localEndPoint; //case IPEndPoint to EndPoint
byte[] recBuffer = new byte[1024]; //Initialise Buffer for recived messages
int recByteCount;
recByteCount = clientConnectionSocket.ReceiveFrom(recBuffer, ref remoteEndPoint);
byte[] data = new byte[recByteCount];
Array.Copy(recBuffer, data, recByteCount);
if (recByteCount > 0)
{
msg = DeSerialize(data);
}
else
{
msg.msgID = 0;
}
}
catch (SocketException se)
{
// If an exception occurs, display an error message
if (10053 == se.ErrorCode || 10054 == se.ErrorCode) // Remote end closed the connection
{
msg.msgID = -1;
closeConnection(clientConnectionSocket);
}
else if (10035 != se.ErrorCode)
{
}
}
catch
{
//Silently catch other exceptions
}
return(msg);
}
public void sendMessage(Messages.MESSAGE msg, Socket clientConnectionSocket)
{
byte[] byteData = Serialize(msg);
clientConnectionSocket.Send(byteData, SocketFlags.None);
}
public void getMessage(Messages.MESSAGE msg, int clientID)
{
sessionDecoder.messageReader(msg, clientID);
}