非接收UDP問題

Question

我是網絡編程的新手，我遇到了一些我一直在測試的代碼作爲局域網聊天程序基礎的問題。

服務器代碼：

public static void Main() 
    { 

     UdpClient publisher = new UdpClient("230.0.0.1", 8899); 
     UdpClient subscriber = new UdpClient("230.0.0.2", 8800); 
     IPAddress addr = IPAddress.Parse("230.0.0.1"); 
     subscriber.JoinMulticastGroup(addr); 
     Console.WriteLine("Running chat program at 230.0.0.1:8899"); 


     while (true) 
     { 
      IPEndPoint ep = null; 
      byte[] chats = subscriber.Receive(ref ep); 
      string chatstring = Encoding.ASCII.GetString(chats); 
      Console.WriteLine(chatstring); 


      string msg = String.Format(chatstring); 
      byte[] sdata = Encoding.ASCII.GetBytes(msg); 
      publisher.Send(sdata, sdata.Length); 



      System.Threading.Thread.Sleep(500); 
     } 
    } 

該客戶端程序：

static void Main(string[] args) 
     { 

      UdpClient subscriber = new UdpClient("230.0.0.1", 8899); 

      IPAddress addr = IPAddress.Parse("230.0.0.1"); 
      subscriber.JoinMulticastGroup(addr); 
      IPEndPoint ep = null; 
      Thread SendChats = new Thread(Send); 
      SendChats.Start(); 
      while (true) 
      { 
       byte[] receivedbytes = subscriber.Receive(ref ep); 
       string receivedchats = Encoding.ASCII.GetString(receivedbytes); 
       Console.WriteLine(receivedchats); 
       Thread.Sleep(500); 
      } 
     } 

     static void Send() 
     { 
      UdpClient publisher = new UdpClient("230.0.0.2", 8800); 



      while (true) 
      { 
       string msg = Console.ReadLine(); 
       byte[] sdata = Encoding.ASCII.GetBytes(msg); 
       publisher.Send(sdata, sdata.Length); 
       Thread.Sleep(400); 
      } 

     } 

通過我的盤算，服務器程序應該從客戶端接收數據，但很可惜，一個消息在輸入後並交付，從來沒有任何事情可以通過。我錯過了什麼嗎？

Answer 1

您的用戶是否在服務器上連接了錯誤的多播？

UdpClient subscriber = new UdpClient("230.0.0.2", 8800); 
IPAddress addr = IPAddress.Parse("230.0.0.1"); 
subscriber.JoinMulticastGroup(addr); 

也許應該是：

IPAddress addr = IPAddress.Parse("230.0.0.2"); 

而且 - 你有任何路由器/客戶端/服務器之間切換，因爲它們會阻止組播流量，除非特別配置這樣做。