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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project 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 io.netty.resolver.dns;

import io.netty.util.internal.UnstableApi;

/**
 * Provides an opportunity to override which {@link DnsServerAddressStream} is used to resolve a specific hostname.
 * 
 * For example this can be used to represent /etc/resolv.conf and
 * 
 * /etc/resolver.
 */
@UnstableApi
public interface DnsServerAddressStreamProvider {
    /**
     * Ask this provider for the name servers to query for {@code hostname}.
     * @param hostname The hostname for which to lookup the DNS server addressed to use.
     *                 If this is the final {@link DnsServerAddressStreamProvider} to be queried then generally empty
     *                 string or {@code '.'} correspond to the default {@link DnsServerAddressStream}.
     * @return The {@link DnsServerAddressStream} which should be used to resolve {@code hostname}.
     */
    DnsServerAddressStream nameServerAddressStream(String hostname);
}