How to keep the server listening?

Hi everyone,

I got this server code from another post and it works very well, but I would like to know, how do I change the code to make it to keep receiving messages indefinitly.

 using UnityEngine;

using System.Threading; using System.Net.Sockets; using System.IO;

public class Servidor1 : MonoBehaviour { private bool mRunning;

 public static string msg = "";
 Thread mThread;
 TcpListener tcp_Listener = null;

 void Start()
 {
     mRunning = true;
     ThreadStart ts = new ThreadStart(SayHello);
     mThread = new Thread(ts);
     mThread.Start();
     print("Thread done...");
 }

 public void stopListening()
 {
     mRunning = false;
 }

 void SayHello()
 {
     try
     {
         tcp_Listener = new TcpListener(54321);
         tcp_Listener.Start();
         print("Server Start");
         while (mRunning)
         {
              check if new connections are pending, if not, be nice and sleep 100ms
             if (!tcp_Listener.Pending())
             {
                 Thread.Sleep(100);
             }
             else
             {
                 print("1");
                 TcpClient client = tcp_Listener.AcceptTcpClient();
                 print("2");
                 NetworkStream ns = client.GetStream();
                 print("3");
                 StreamReader reader = new StreamReader(ns);                   
                 print("4");
                 
                 
                 
                     msg = reader.ReadLine();
                                                 
                         print(msg);
                     
                     
                     


                 reader.Close();
                 client.Close();
             }
         }
     }
     catch (ThreadAbortException)
     {
         print("exception");
     }
     finally
     {
         mRunning = false;
         tcp_Listener.Stop();
     }
 }
 
 public static string mssg(){
         return msg;
     
 }

 void OnApplicationQuit()
 {
     // stop listening thread
     stopListening();
     // wait fpr listening thread to terminate (max. 500ms)
     mThread.Join(500);
 }

}