// send message to all clients from server
 private static void sendMessageToClient()
 {
     try
     {
         Console.Write("Msg:");
         string msg = Console.ReadLine();
         // send message to clients
         if (server.listClientsConnected.Count > 0)
         {
             foreach (ClientInfo client in server.listClientsConnected)
             {
                 server.sendMessage(msg, client);
             }
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.Message);
     }
     finally
     {
         sendMessageToClient();
     }
 }