1 /*
2 * junixsocket
3 *
4 * Copyright 2009-2024 Christian Kohlschütter
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.newsclub.net.unix;
19
20 import java.io.IOException;
21 import java.net.SocketAddress;
22
23 /**
24 * A filter that takes a {@link SocketAddress}, and potentially changes it, or throws an exception
25 * if certain criteria are met.
26 *
27 * @author Christian Kohlschütter
28 */
29 @FunctionalInterface
30 public interface SocketAddressFilter {
31
32 /**
33 * Applies the filter on the given address.
34 *
35 * @param address The address.
36 * @return The address itself or a changed address.
37 * @throws IOException on error or if a certain error condition is desired.
38 */
39 SocketAddress apply(SocketAddress address) throws IOException;
40 }