Question

我怎么知道哪个接口将允许UPD连接？我得到了所有这样的网络接口的列表：

Enumeration<NetworkInterface> networkInterfaceEnumeration = NetworkInterface.getNetworkInterfaces();

$ ipconfig
Windows IP Configuration

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : myworld.com
   IPv4 Address. . . . . . . . . . . : 10.219.1.157
   Subnet Mask . . . . . . . . . . . : 255.255.254.0
   Default Gateway . . . . . . . . . : 10.219.0.1

Tunnel adapter isatap.myworld.com:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : myworld.com

Answer 1

我发现的解决方案是遍历所有接口，并测试已启用连接：示例工作代码为：

public static DatagramChannel openDatagramChannelForAnyWorkingInterface(int port, String ip) throws IOException {

    DatagramChannel channel;
    try {
        channel = DatagramChannel.open(StandardProtocolFamily.INET);
        channel.configureBlocking(true);
        channel.socket().setReuseAddress(true);
        channel.bind(new InetSocketAddress(port));
        Enumeration<NetworkInterface> networkInterfaceEnumeration = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface np : Collections.list(networkInterfaceEnumeration)) {
            try {
                channel.join(InetAddress.getByName(ip), NetworkInterface.getByName(np.getName()));
                log.info("Data joining channel ip [{}], port [{}] interface [{}]", ip, port, np.getName());
                break;
            } catch (Exception ignore) {
            }
        }
    } catch (Exception e) {
        log.error("Exception while subscribing to market data: ", e);
        throw e;
    }
    return channel;
}

Windows 7上的以太网？

1 个答案: