openjdk源码
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/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @summary NOT A TEST. Captures the network interface configuration.
* @library /lib/testlibrary
* @build jdk.testlibrary.NetworkConfiguration
* @run main NetworkConfigurationProbe
*/
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.NetworkInterface;
import jdk.testlibrary.NetworkConfiguration;
import static java.util.stream.Collectors.joining;
import static java.lang.System.out;
/**
* Not a test. Captures the network interface configuration.
*/
public class NetworkConfigurationProbe {
public static void main(String... args) throws Exception {
NetworkConfiguration.printSystemConfiguration(out);
NetworkConfiguration nc = NetworkConfiguration.probe();
String list;
list = nc.ip4MulticastInterfaces()
.map(NetworkInterface::getName)
.collect(joining(" "));
out.println("ip4MulticastInterfaces: " + list);
list = nc.ip4Addresses()
.map(Inet4Address::toString)
.collect(joining(" "));
out.println("ip4Addresses: " + list);
list = nc.ip6MulticastInterfaces()
.map(NetworkInterface::getName)
.collect(joining(" "));
out.println("ip6MulticastInterfaces: " + list);
list = nc.ip6Addresses()
.map(Inet6Address::toString)
.collect(joining(" "));
out.println("ip6Addresses: " + list);
}
}