UdpClient.cs

using UnityEngine;
using System.Collections;
using System;
using System.Net.Sockets;
using System.Net;
using System.Text;

public class UdpClient : MonoBehaviour {
	private static string ip = "192.168.0.0.1";
	private static int port = 9002;
	public static bool messageReceived = false;

	private struct UdpState {
		public UdpClient u;
		public IPEndPoint e;

	}

	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}

	public static void ReceiveCallback(IAsyncResult ar)
	{
		UdpClient u = (UdpClient)((UdpState)(ar.AsyncState)).u;
		IPEndPoint e = (IPEndPoint)((UdpState)(ar.AsyncState)).e;
		
		Byte[] receiveBytes = u.EndReceive(ar, ref e);
		string receiveString = Encoding.ASCII.GetString(receiveBytes);
		
		Console.WriteLine("Received: {0}", receiveString);
		messageReceived = true;
	}

	public static void ReceiveMessages()
	{
		// Receive a message and write it to the console.
		IPEndPoint e = new IPEndPoint(IPAddress.Parse(ip), port);
		UdpClient u = new UdpClient(e);
		
		UdpState s = new UdpState();
		s.e = e;
		s.u = u;
		
		Console.WriteLine("listening for messages");
		u.BeginReceive(new AsyncCallback(ReceiveCallback), s);
		// Do some work while we wait for a message. For this example, 
		// we'll just sleep 
		return;
	}
}