UDPReceive.cs

using UnityEngine;
using System;
using System.Collections;
using System.Net;
using System.IO;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using MiniJSON;

public class UDPReceive : MonoBehaviour
{
    CharactorActor c_actor;
    int LOCAL_PORT = 22222;
    static UdpClient udp;
    Thread thread;
    public string parameter;
   
    public static Action<string> DataCallBack;

    void Start ()
    {
        UDPReceive.DataCallBack += Method;
        UDPStart();
    }

     public void UDPStart(){
       
        udp = new UdpClient(LOCAL_PORT);
        thread = new Thread(new ThreadStart(ThreadMethod));
        
        thread.Start(); 
    }

    public void Method(string data){
       parameter = data;
    }

    void OnApplicationQuit()
    {
        thread.Abort();
    }

    private static void ThreadMethod()
    {
        while(true)
        { 
           
            IPEndPoint remoteEP = null;
            byte[] data = udp.Receive(ref remoteEP);
            string text = Encoding.ASCII.GetString(data);
            
            DataCallBack(text);
            //Debug.Log(text);
           
        }
    } 
}