如何更改UdpClient IP地址？

发布于 2024-12-06 13:12:22 字数 624 浏览 0 评论 0原文

有没有办法动态更改 UdpClient IP 地址？ StartUpd() 抛出一个

System.Net.Sockets.SocketException：每个套接字仅使用一次地址（协议/网络地址/端口）通常是允许的

即使在执行 StopUpd() 之后，

private static UdpClient udpClientR;
void StartUpd()
{
    try
    {
        udpClientR = new UdpClient();
        udpClientR.Connect(Settings.rxIPAddress, PORT_RX_LOCAL);
        var t1 = new Thread(() => UdpReceiveThread(PORT_RX_REMOTE)) 
        { IsBackground = true };
        t1.Start();
        ...

private void StopUpd()
{
    try
    {
        udpClientR.Close();
        ...

原文

Is there a way to change the UdpClient IP address on the fly?
StartUpd() throws a

System.Net.Sockets.SocketException: Only one usage of each socket
address (protocol/network address/port) is normally permitted

even after doing a StopUpd().

private static UdpClient udpClientR;
void StartUpd()
{
    try
    {
        udpClientR = new UdpClient();
        udpClientR.Connect(Settings.rxIPAddress, PORT_RX_LOCAL);
        var t1 = new Thread(() => UdpReceiveThread(PORT_RX_REMOTE)) 
        { IsBackground = true };
        t1.Start();
        ...

private void StopUpd()
{
    try
    {
        udpClientR.Close();
        ...

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内心激荡 2024-12-13 13:12:22

您需要一些时间来启动线程并停止，然后才能调用 StartUpd 和 StopUpd。 关闭 UDP 客户端后，您可以等待线程退出。这将确保在您尝试重新连接之前其已关闭。所以代码会像这样：

  private UdpClient udpClientR;
  private Thread t1;
  void StartUpd()
  {
     udpClientR = new UdpClient();
     udpClientR.Connect(Settings.rxIPAddress, PORT_RX_LOCAL);
     t1 = new Thread(() => UdpReceiveThread(PORT_RX_REMOTE)) { IsBackground = true };
     t1.Start();
     // Give it some time here to startup, incase you call StopUpd too soon
     Thread.Sleep(1000);
  }

  private void StopUpd()
  {
     udpClientR.Close();
     // Wait for the thread to exit.  Calling Close above should stop any
     // Read block you have in the UdpReceiveThread function.  Once the
     // thread dies, you can safely assume its closed and can call StartUpd again
     while (t1.IsAlive) { Thread.Sleep(10); }
  }

其他随机注释，看起来你拼错了函数名称，可能应该是 StartUdp 和 StopUdp

You'll need some time for the thread to start, and to stop before you can call StartUpd and StopUpd. You can wait for the thread to exit once you Close the UDP client. This will ensure that its closed before you try to reconnect. So the code would like something like this:

  private UdpClient udpClientR;
  private Thread t1;
  void StartUpd()
  {
     udpClientR = new UdpClient();
     udpClientR.Connect(Settings.rxIPAddress, PORT_RX_LOCAL);
     t1 = new Thread(() => UdpReceiveThread(PORT_RX_REMOTE)) { IsBackground = true };
     t1.Start();
     // Give it some time here to startup, incase you call StopUpd too soon
     Thread.Sleep(1000);
  }

  private void StopUpd()
  {
     udpClientR.Close();
     // Wait for the thread to exit.  Calling Close above should stop any
     // Read block you have in the UdpReceiveThread function.  Once the
     // thread dies, you can safely assume its closed and can call StartUpd again
     while (t1.IsAlive) { Thread.Sleep(10); }
  }

Other random note, looks like you misspelled the function names, probably should be StartUdp and StopUdp

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