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comparison: src/net/fortuna/ical4j/util/InetAddressHostInfo.java
src/net/fortuna/ical4j/util/InetAddressHostInfo.java
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| 1 /** | |
| 2 * Copyright (c) 2012, Ben Fortuna | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * | |
| 9 * o Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * o Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * o Neither the name of Ben Fortuna nor the names of any other contributors | |
| 17 * may be used to endorse or promote products derived from this software | |
| 18 * without specific prior written permission. | |
| 19 * | |
| 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 */ | |
| 32 package net.fortuna.ical4j.util; | |
| 33 | |
| 34 import java.net.InetAddress; | |
| 35 import java.net.NetworkInterface; | |
| 36 import java.net.SocketException; | |
| 37 import java.util.Enumeration; | |
| 38 | |
| 39 /** | |
| 40 * @author fortuna | |
| 41 * | |
| 42 */ | |
| 43 public class InetAddressHostInfo implements HostInfo { | |
| 44 | |
| 45 private final InetAddress hostAddress; | |
| 46 | |
| 47 /** | |
| 48 * @throws SocketException where an error occurs identifying the host address | |
| 49 */ | |
| 50 public InetAddressHostInfo() throws SocketException { | |
| 51 this(findNonLoopbackAddress()); | |
| 52 } | |
| 53 | |
| 54 /** | |
| 55 * @param address a host address | |
| 56 */ | |
| 57 public InetAddressHostInfo(InetAddress address) { | |
| 58 this.hostAddress = address; | |
| 59 } | |
| 60 | |
| 61 /** | |
| 62 * {@inheritDoc} | |
| 63 */ | |
| 64 public String getHostName() { | |
| 65 return hostAddress.getHostName(); | |
| 66 } | |
| 67 | |
| 68 /** | |
| 69 * Find a non loopback address for this machine on which to start the server. | |
| 70 * @return a non loopback address | |
| 71 * @throws SocketException if a socket error occurs | |
| 72 */ | |
| 73 private static InetAddress findNonLoopbackAddress() throws SocketException { | |
| 74 final Enumeration enumInterfaceAddress = NetworkInterface.getNetworkInterfaces(); | |
| 75 while (enumInterfaceAddress.hasMoreElements()) { | |
| 76 final NetworkInterface netIf = (NetworkInterface) enumInterfaceAddress.nextElement(); | |
| 77 | |
| 78 // Iterate over inet address | |
| 79 final Enumeration enumInetAdress = netIf.getInetAddresses(); | |
| 80 while (enumInetAdress.hasMoreElements()) { | |
| 81 final InetAddress address = (InetAddress) enumInetAdress.nextElement(); | |
| 82 if (!address.isLoopbackAddress()) { | |
| 83 return address; | |
| 84 } | |
| 85 } | |
| 86 } | |
| 87 return null; | |
| 88 } | |
| 89 | |
| 90 } |
