com.uber.tchannel.utils.TChannelUtilities Maven / Gradle / Ivy
/*
* Copyright (c) 2015 Uber Technologies, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.uber.tchannel.utils;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public class TChannelUtilities {
private static final Logger logger = LoggerFactory.getLogger(TChannelUtilities.class);
public static final ByteBuf emptyByteBuf = Unpooled.EMPTY_BUFFER;
public static InetAddress getCurrentIp() {
try {
Enumeration networkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (networkInterfaces.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface) networkInterfaces
.nextElement();
Enumeration nias = ni.getInetAddresses();
while(nias.hasMoreElements()) {
InetAddress ia= (InetAddress) nias.nextElement();
if (!ia.isLinkLocalAddress()
&& !ia.isLoopbackAddress()
&& ia instanceof Inet4Address) {
return ia;
}
}
}
} catch (SocketException e) {
logger.error("unable to get current IP.", e);
}
return null;
}
}