使用udp将数据发送到多个客户端C＃ [英] Send data using udp to multiple clients C#

问题描述

我希望每分钟都能通过udp进行通信的设备进行状态更新。我应该用什么方法。任何建议将不胜感激。谢谢



我尝试了什么：



我试过这个

 foreach（iPAddresses中的IPAddress ips）
 {
 Byte [] receiveBytes = {}; 
 Byte [] dataToSend = new Byte [] {0x8B，0xB9,0x00,0x03,0x05,0x01,0x09}; 
 IPEndPoint endPoint =新IPEndPoint（ips，1024）; 
 EndPoint ep =（EndPoint）endPoint; 
 Socket udpClient = new Socket（AddressFamily.InterNetwork，SocketType.Dgram，ProtocolType.Udp）; 
 
尝试
 {
 udpClient.Connect（endPoint）; 
 udpClient.SendTo（dataToSend，ep）; 
 // Thread.Sleep（50）; 
 IPEndPoint localip = new IPEndPoint（IPAddress.Any，1200）; 
 
 UdpClient receivingUdpClient = new UdpClient（localip）; 
 
 
 receiveBytes = receivingUdpClient.Receive（ref endPoint）; 
 // Thread.Sleep（50）; 
 
 udpClient.Close（）; 
 
 
 receivingUdpClient.Close（）; 
 receivingUdpClient.Dispose（）; 
 updateData（receiveBytes，ips）; 
} 
最后
 {
 
 udpClient.Dispose（）; 
} 
 
} 

我能找到的问题是通过这一行 -

 receiveBytes = receivingUdpClient.Receive（ref endPoint）; 

receive（）中的ref端点只有第一个ip地址。它没有变化。发送方法可以更改IP地址。但是没有接收方法。



在此之前我也尝试过其他一些方法。但这就是我现在正在做的事情

解决方案

你没有检查连接（返回）状态。



您可能无法连接;或者不等待足够长的时间。



但是既然你实际上忽略了任何错误（空的前处理程序），你就会想知道发生了什么

I want status update from the devices which communicate on udp, every minute. what method i should use. Any kind of suggestions will be appreciated. Thanks

What I have tried:

I have tried this

foreach (IPAddress ips in iPAddresses)
        {
            Byte[] receiveBytes = { };
            Byte[] dataToSend = new Byte[] { 0x8B, 0xB9, 0x00, 0x03, 0x05, 0x01, 0x09 };
            IPEndPoint endPoint = new IPEndPoint(ips, 1024);
            EndPoint ep = (EndPoint)endPoint;
            Socket udpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            try
            {
                udpClient.Connect(endPoint);
                udpClient.SendTo(dataToSend, ep);
               // Thread.Sleep(50);
                IPEndPoint localip = new IPEndPoint(IPAddress.Any, 1200);

                UdpClient receivingUdpClient = new UdpClient(localip);


                receiveBytes = receivingUdpClient.Receive(ref endPoint);
               // Thread.Sleep(50);

                udpClient.Close();


                receivingUdpClient.Close();
                receivingUdpClient.Dispose();
                updateData(receiveBytes, ips);
            }
            finally
            {

                udpClient.Dispose();
            }

        }

The problem I can find is through this line-

receiveBytes = receivingUdpClient.Receive(ref endPoint);

ref endpoint in receive() is having 1st ip address only. its not changing. Send method is able to change ip address. but not receive method.

I have tried some other methods too before this. but this is what I am doing now

解决方案

You're not checking the "connect" (return) status.

You're probably failing to connect; or not "waiting" long enough.

But since you're effectively ignoring any errors ("empty" ex handler), you're left to wonder what's going on.

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