com.alibaba.nacos.naming.misc.NetUtils Maven / Gradle / Ivy
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/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.nacos.naming.misc;
import com.alibaba.nacos.naming.boot.RunningConfig;
import org.apache.commons.lang3.StringUtils;
import java.net.InetAddress;
import java.net.UnknownHostException;
import static com.alibaba.nacos.common.util.SystemUtils.PREFER_HOSTNAME_OVER_IP;
/**
* @author nacos
*/
public class NetUtils {
private static String serverAddress = null;
public static String localServer() {
try {
if (StringUtils.isNotBlank(serverAddress)) {
return serverAddress + UtilsAndCommons.CLUSTER_CONF_IP_SPLITER + RunningConfig.getServerPort();
}
InetAddress inetAddress = InetAddress.getLocalHost();
serverAddress = inetAddress.getHostAddress();
if (PREFER_HOSTNAME_OVER_IP) {
if (inetAddress.getHostName().equals(inetAddress.getCanonicalHostName())) {
serverAddress = inetAddress.getHostName();
} else {
serverAddress = inetAddress.getCanonicalHostName();
}
}
return serverAddress + UtilsAndCommons.CLUSTER_CONF_IP_SPLITER + RunningConfig.getServerPort();
} catch (UnknownHostException e) {
return "resolve_failed";
}
}
public static String num2ip(int ip) {
int[] b = new int[4];
String x = "";
b[0] = (int) ((ip >> 24) & 0xff);
b[1] = (int) ((ip >> 16) & 0xff);
b[2] = (int) ((ip >> 8) & 0xff);
b[3] = (int) (ip & 0xff);
x = Integer.toString(b[0]) + "." + Integer.toString(b[1]) + "." + Integer.toString(b[2]) + "." + Integer.toString(b[3]);
return x;
}
}