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using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using Nwc.XmlRpc;
using System.Collections;

namespace OpenSim.Servers
{
    public class OpenGridProtocolServer
    {
        
        private Thread m_workerThread;
        private Socket m_listenerSocket;
	private IPEndPoint m_IPendpoint;

	private int m_port;
	private ArrayList m_clients;

	private class ClientHandler {
		private Thread m_clientThread;
		private Socket m_socketHandle;

		public ClientHandler(Socket clientSocketHandle) {
			m_socketHandle=clientSocketHandle;
			m_clientThread = new Thread(new ThreadStart(DoWork));
			m_clientThread.IsBackground = true;
			m_clientThread.Start();
		}
		
		private void DoWork() {
                	OpenSim.Framework.Console.MainConsole.Instance.WriteLine("OpenGridProtocol.cs: ClientHandler.DoWork() - Got new client");
			this.WriteLine("OpenSim 0.1, running OGS protocol 1.0");
			
		}

		private void WriteLine(string theline) {
			theline+="\n";
			byte[] thelinebuffer = System.Text.Encoding.ASCII.GetBytes(theline.ToCharArray());
			m_socketHandle.Send(thelinebuffer,theline.Length,0);
		}
	}

        public OpenGridProtocolServer(int port)
        {
            m_port = port;
        }

        public void Start()
        {
                OpenSim.Framework.Console.MainConsole.Instance.WriteLine("OpenGridProtocol.cs: Start() - Opening server socket");

		m_clients = new ArrayList();
                m_workerThread = new Thread(new ThreadStart(StartServerSocket));
                m_workerThread.IsBackground = true;
                m_workerThread.Start();
        }

        private void StartServerSocket()
        {
            try
            {
                OpenSim.Framework.Console.MainConsole.Instance.WriteLine("OpenGridProtocol.cs: StartServerSocket() - Spawned main thread OK");
                

		m_IPendpoint = new IPEndPoint(IPAddress.Any, m_port);
		m_listenerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
		m_listenerSocket.Bind(m_IPendpoint);
		m_listenerSocket.Listen(4);

		Socket sockethandle;
                while (true)
                {
                    sockethandle = m_listenerSocket.Accept();
		    lock(m_clients.SyncRoot) { 
			m_clients.Add(new OpenGridProtocolServer.ClientHandler(sockethandle));
		    }
                }
            }
            catch (Exception e)
            {
                OpenSim.Framework.Console.MainConsole.Instance.WriteLine(e.Message);
            }
        }
    }
}