Mirror keys for multiboxing MMORPG games like WOW/LOTRO


public class UdpKeyListener
{
	private const int listenPort = 11053;
	private int m_exitCode = 0;
	private int m_messageCount = 0;
    private System.IntPtr m_handle = System.IntPtr.Zero;
		//Asynchronous Non-Blocking Background Worker
	private System.ComponentModel.BackgroundWorker m_BackgroundWorker = new System.ComponentModel.BackgroundWorker();
	public event OnMessageReceivedEventHandler OnMessageReceived;
	public delegate void OnMessageReceivedEventHandler(object Sender, int msgCount, int iRet, string msg);
	private void m_BackgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
	{
		int iRet = 1;
		System.Net.Sockets.UdpClient listener = new System.Net.Sockets.UdpClient(listenPort);
		System.Net.IPEndPoint groupEP = new System.Net.IPEndPoint(System.Net.IPAddress.Any, listenPort);
		try {
			while (!(((iRet == 0) || (iRet == -1)))) {
				byte[] bytes = listener.Receive(ref groupEP);
				//GMTMXX
				if (bytes.Length > 6 && bytes[0] == 71 && bytes[1] == 77 && bytes[2] == 84 && bytes[3] == 77 && bytes[4] == 88 && bytes[5] == 88) {
					m_BackgroundWorker.ReportProgress(iRet,System.Convert.ToString(System.Text.Encoding.ASCII.GetString(bytes, 6, bytes.Length - 6)));
				}
			}
		} catch (System.Exception ex) {
            System.Diagnostics.Debug.Write(ex.ToString());
			iRet = -1;
		} finally {
			listener.Close();
		}
	}
	private void m_BackgroundWorker_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e)
	{
		if ((((e.UserState != null)) && (typeof(string).Equals(e.UserState.GetType())))) 
        {
			m_messageCount += 1;
			int iRet = e.ProgressPercentage;
			string msg =System.Convert.ToString(e.UserState);
			if ((((OnMessageReceived != null)) && (OnMessageReceived.GetInvocationList().Length > 0))) {
				if (OnMessageReceived != null) {
					OnMessageReceived(this, m_messageCount, iRet, msg);
				}
			}
		}
	}
	public UdpKeyListener()
	{
        m_BackgroundWorker.DoWork += new System.ComponentModel.DoWorkEventHandler(m_BackgroundWorker_DoWork);
        m_BackgroundWorker.ProgressChanged += new System.ComponentModel.ProgressChangedEventHandler(m_BackgroundWorker_ProgressChanged);
		m_BackgroundWorker.WorkerReportsProgress = true;
		m_BackgroundWorker.WorkerSupportsCancellation = true;
		m_BackgroundWorker.RunWorkerAsync();
	}
	public int exitCode {
		get { return m_exitCode; }
	}
	public int messageCount {
		get { return m_messageCount; }
	}
    public System.IntPtr handle
    {
		get { return m_handle; }
	}

	public static void Send(string msg)
	{
		System.Net.Sockets.UdpClient xClient = new System.Net.Sockets.UdpClient();
		byte[] bytes = System.Text.Encoding.ASCII.GetBytes("GMTMXX" + msg);
		xClient.Send(bytes, bytes.Length, new System.Net.IPEndPoint(System.Net.IPAddress.Parse("255.255.255.255"), listenPort));
		xClient.Close();
	}
}