| /* GENERATED SOURCE. DO NOT MODIFY. */ |
| /* |
| * Copyright (C) 2012 Square, Inc. |
| * |
| * 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.android.okhttp; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * A domain name service that resolves IP addresses for host names. Most applications will use the |
| * {@linkplain #SYSTEM system DNS service}, which is the default. Some applications may provide |
| * their own implementation to use a different DNS server, to prefer IPv6 addresses, to prefer IPv4 |
| * addresses, or to force a specific known IP address. |
| * |
| * <p>Implementations of this interface must be safe for concurrent use. |
| * @hide This class is not part of the Android public SDK API |
| */ |
| public interface Dns { |
| /** |
| * A DNS that uses {@link InetAddress#getAllByName} to ask the underlying operating system to |
| * lookup IP addresses. Most custom {@link Dns} implementations should delegate to this instance. |
| */ |
| Dns SYSTEM = new Dns() { |
| @Override public List<InetAddress> lookup(String hostname) throws UnknownHostException { |
| if (hostname == null) throw new UnknownHostException("hostname == null"); |
| return Arrays.asList(InetAddress.getAllByName(hostname)); |
| } |
| }; |
| |
| /** |
| * Returns the IP addresses of {@code hostname}, in the order they will be attempted by OkHttp. |
| * If a connection to an address fails, OkHttp will retry the connection with the next address |
| * until either a connection is made, the set of IP addresses is exhausted, or a limit is |
| * exceeded. |
| */ |
| List<InetAddress> lookup(String hostname) throws UnknownHostException; |
| } |