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1   /*
2    * Copyright 2017 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.resolver.dns;
17  
18  import io.netty.util.internal.UnstableApi;
19  
20  import java.net.InetSocketAddress;
21  
22  /**
23   * A {@link DnsServerAddressStreamProvider} which always uses a single DNS server for resolution.
24   */
25  @UnstableApi
26  public final class SingletonDnsServerAddressStreamProvider extends UniSequentialDnsServerAddressStreamProvider {
27      /**
28       * Create a new instance.
29       * @param address The singleton address to use for every DNS resolution.
30       */
31      public SingletonDnsServerAddressStreamProvider(final InetSocketAddress address) {
32          super(DnsServerAddresses.singleton(address));
33      }
34  }