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Efficient reliable UDP unicast, UDP multicast, and IPC transport protocol.

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/*
 * Copyright 2014-2025 Real Logic Limited.
 *
 * 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
 *
 * https://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 io.aeron.driver;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * Use the default host name resolver via {@link InetAddress}.
 */
public class DefaultNameResolver implements NameResolver
{
    /**
     * Singleton instance which can be used to avoid allocation.
     */
    public static final DefaultNameResolver INSTANCE = new DefaultNameResolver();

    /**
     * {@inheritDoc}
     */
    public InetAddress resolve(final String name, final String uriParamName, final boolean isReResolution)
    {
        InetAddress resolvedAddress = null;
        try
        {
            resolvedAddress = InetAddress.getByName(name);
        }
        catch (final UnknownHostException ignore)
        {
        }

        return resolvedAddress;
    }

    /**
     * Name resolution hook, useful for logging.
     *
     * @param resolverName    used to handle the resolution.
     * @param hostname        that was resolved.
     * @param resolvedAddress the resulting address or null if it can't be resolved.
     * @deprecated No longer used for logging.
     */
    @Deprecated
    public void resolveHook(final String resolverName, final String hostname, final InetAddress resolvedAddress)
    {
    }
}