具有多个发送器和一个接收器的UDP [英] UDP with multiple sender and one single receiver

问题描述

在一个项目中，我有多个UDP数据发送者，但只有一个接收者.

In a project I have multiple senders of UDP data, but only a single receiver.

如果流量增加，则接收器会忘记"很多数据包.我知道这是UDP固有的问题，但是我想减少丢失的数据包的数量.

If traffic gets higher, the receiver "forgets" lots of packets. I know that this is a problem inherent to UDP, but I want to minimize the number of lost packets.

我之前已经阅读过这个 SO问题！

I have read this SO question before!

这是我的代码(请原谅大量的代码块，但我希望示例可以独立存在)

Here is my code (Please excuse the massive code blocks, but I wanted the example to be self contained)

发送方:

public class UdpSender
{
    private static int portNumber = 15000;

    public void Send(string data)
    {
        var udpServer = new UdpClient();
        var ipEndPoint = new IPEndPoint(IPAddress.Broadcast, portNumber);
        byte[] bytes = Encoding.ASCII.GetBytes(data);
        udpServer.Send(bytes, bytes.Length, ipEndPoint);
        udpServer.Close();
    }
}


class Program
{
    static void Main(string[] args)
    {
        var sender = new UdpSender();
        var count = 100000;

        for (var i = 0; i < count; ++i)
        {
            sender.Send(i.ToString());
        }

        Console.ReadKey();
    }
}

接收方:

public class UDPListener
{
    private static int portNumber = 15000;
    private readonly UdpClient udp = new UdpClient(portNumber);

    public volatile int CountOfReceived = 0;

    public void StartListening()
    {
        this.udp.BeginReceive(Receive, new object());
    }

    private void Receive(IAsyncResult ar)
    {
        Interlocked.Increment(ref CountOfReceived);

        IPEndPoint ip = new IPEndPoint(IPAddress.Any, portNumber);
        byte[] bytes = udp.EndReceive(ar, ref ip);
        string message = Encoding.ASCII.GetString(bytes);
        StartListening();
    }
}

class Program
{
    static void Main(string[] args)
    {
        var listener = new UDPListener();

        listener.StartListening();

        while (true)
        {
            Console.WriteLine(listener.CountOfReceived.ToString("000,000,000"));
        }

    }
}

现在，如果我并行启动5个发件人应用程序，则仅收到大约四分之一的消息.这仅在我的本地计算机上.

Right now if I start 5 sender applications in parallel, only about a quarter of the messages is received. This is only on my local machine.

我该怎么做才能最大程度地减少丢包?

推荐答案

考虑到您在旅途中发送数据包的速度，我会说接收器缓冲区可能会花一点时间-增加缓冲区大小(如此处所示)可以解决这个问题.

thinking about the speed you're sending your packets on their trip i would say that the sinks buffer might be filled in a bit of time - increasing the buffer size (as shown here) could solve this issue, i guess.

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