Windows7上的以太网？

我怎么知道，哪个接口将允许UPD连接？ 我得到如下所有网络接口的列表：

枚举networkInterfaceEnumeration=NetworkInterface.getNetworkInterfaces

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我找到的解决方案是迭代所有接口，并测试为连接启用的接口： 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;
}

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你好，奥利弗，这不是一个重复的问题。由于基于windows的ipconfig不提供详细信息，如列出所有接口、支持的连接类型等。因此，我必须迭代所有接口以测试UDP连接。

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;
}