source: branches/thasling/DistributedGA/DistributedGA.Core/Implementation/WcfMessageService.cs @ 13923

using System;
using System.Net;
using System.Net.Sockets;
using System.ServiceModel;
using System.Threading;
using DistributedGA.Core.Domain;
using DistributedGA.Core.Interface;

namespace DistributedGA.Core.Implementation
{
    public class WcfMessageService : IMessageService
    {
        public event EventHandler<MessageRecieveEventArgs> OnDataRecieved;

        private static ManualResetEvent _ResetEvent = new ManualResetEvent(false);

        private IMessageContract messageContract = null;

        public int Init(string ip)
        {
            int port = 0;
            port = FreeTcpPort();

            messageContract = new MessageContractImpl();
            messageContract.MessageRecieved += new EventHandler<MessageRecieveEventArgs>(OnMessageRecieved);

            var serviceUrl = "DistributedGA.svc";
            new Thread(() =>
            {
                var baseUri = new Uri(string.Concat("net.tcp://", ip, ":", port, "/DistributedGA"));
                var serviceUri = new Uri(baseUri, serviceUrl);
                NetTcpBinding binding = new NetTcpBinding();

                using (var host = new ServiceHost(messageContract, serviceUri))
                {
                    host.AddServiceEndpoint(typeof(IMessageContract), binding, serviceUri);

                    host.Open();

                    _ResetEvent.WaitOne();
                }
            }).Start();
            return port;
        }

        public void Dispose()
        {
            _ResetEvent.Set();
        }

        private int FreeTcpPort()
        {
            TcpListener l = new TcpListener(IPAddress.Loopback, 0);
            l.Start();
            int port = ((IPEndPoint)l.LocalEndpoint).Port;
            l.Stop();
            return port;
        }

        private void OnMessageRecieved(object sender, MessageRecieveEventArgs e)
        {
            if (OnDataRecieved != null)
            {
                OnDataRecieved(this, e);
            }
        }
    }
}