ASP.NET 多播 UdpClient 问题

发布于 2024-08-16 09:35:42 字数 825 浏览 7 评论 0原文

我正在尝试让我的 ASP.NET 应用程序侦听多播 UDP 广播。不幸的是，由于权限/api 问题，我似乎陷入了困境。

问题是我需要允许应用程序的多个实例侦听相同的 IP/端口，因为 ASP.NET 应用程序将发生多次旋转。为此，SocketOptionName.ReuseAddress 必须设置为 true。问题是这需要我的 ASP.NET 应用程序不应该拥有的管理权限。

这是代码：

public static void Listen(int port)
{
   var groupAddress = IPAddress.Parse("224.10.10.10");
   var endPoint = new IPEndPoint(groupAddress, port);
   var client = new UdpClient();

   client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
   client.Client.Bind(new IPEndpoint(IPAddress.Any, port)); // Error thrown here       
   client.JoinMulticastGroup(groupAddress);       

   var udpState = new UdpState() { Client = client, EndPoint = endPoint };
   client.BeginReceive(OnMessageReceived, udpState); // OnMessageReceived code omitted
}

原文

I'm trying to have my ASP.NET app listen for multicast UDP broadcasts. Unfortunately, I seem to be stuck in a bind due to permissions/api issues.

The problem is that I need to allow multiple instances of an application to listen to the same IP/Port since multiple spin-ups of the ASP.NET application will occur. To do this, the SocketOptionName.ReuseAddress must be set to true. The problem is that this requires administrative privileges that my ASP.NET app should not have.

Here's the code:

public static void Listen(int port)
{
   var groupAddress = IPAddress.Parse("224.10.10.10");
   var endPoint = new IPEndPoint(groupAddress, port);
   var client = new UdpClient();

   client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
   client.Client.Bind(new IPEndpoint(IPAddress.Any, port)); // Error thrown here       
   client.JoinMulticastGroup(groupAddress);       

   var udpState = new UdpState() { Client = client, EndPoint = endPoint };
   client.BeginReceive(OnMessageReceived, udpState); // OnMessageReceived code omitted
}

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