org.apache.activemq.artemis.utils.IPV6Util.java Source code

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Here is the source code for org.apache.activemq.artemis.utils.IPV6Util.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.activemq.artemis.utils;

import com.google.common.net.InetAddresses;

public class IPV6Util {

    /**
     * It will enclose an IPV6 host with [], that we need before building URIs
     */
    public static String encloseHost(final String host) {
        // if the host contains a ':' then we know it's not IPv4
        if (host != null && host.contains(":")) {
            String hostToCheck = host;

            /* strip off zone index since com.google.common.net.InetAddresses.isInetAddress() doesn't support it
             * see https://en.wikipedia.org/wiki/IPv6_address#Link-local_addresses_and_zone_indices for more info
             */
            if (host.contains("%")) {
                hostToCheck = host.substring(0, host.indexOf("%"));
            }

            if (InetAddresses.isInetAddress(hostToCheck)) {
                return "[" + host + "]";
            }
        }

        return host;
    }
}