C-Sharp

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using Apache.NMS;

namespace ApacheNMS
{
   class Program
   {
       static void Main(string[] args)
       {
           IConnectionFactory factory = new NMSConnectionFactory(new Uri("stomp:tcp://datafeeds.networkrail.com:61618"));

           IConnection connection = factory.CreateConnection("username", "password");
           ISession session = connection.CreateSession();

           IDestination destination = session.GetDestination("topic://" + "TRAIN_MVT_ALL_TOC");
           IMessageConsumer consumer = session.CreateConsumer(destination);

           connection.Start();
           consumer.Listener += new MessageListener(OnMessage);
           Console.WriteLine("Consumer started, waiting for messages... (Press ENTER to stop.)");

           Console.ReadLine();
           connection.Close();
       }

       private static void OnMessage(IMessage message)
       {
           try
           {
               Console.WriteLine("Median-Server (.NET): Message received");

               ITextMessage msg = (ITextMessage)message;
               message.Acknowledge();

               Console.WriteLine(msg.Text);
           }
           catch (Exception ex)
           {
               Console.WriteLine(ex.Message);
               Console.WriteLine("---");
               Console.WriteLine(ex.InnerException);
               Console.WriteLine("---");
               Console.WriteLine(ex.InnerException.Message);
           }
       }
   }
}

For a full explanation of the code and how to use it, please see Gavins blog. This code will connect to the Train Movements (All) data feed, and display the messages as they are displayed.