1 /*
2 * Copyright 2012 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 * https://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.channel.socket.nio;
17
18 import io.netty.channel.socket.InternetProtocolFamily;
19 import io.netty.util.internal.SuppressJava6Requirement;
20
21 import java.net.ProtocolFamily;
22 import java.net.StandardProtocolFamily;
23
24 /**
25 * Helper class which convert the {@link InternetProtocolFamily}.
26 */
27 final class ProtocolFamilyConverter {
28
29 private ProtocolFamilyConverter() {
30 // Utility class
31 }
32
33 /**
34 * Convert the {@link InternetProtocolFamily}. This MUST only be called on jdk version >= 7.
35 */
36 @SuppressJava6Requirement(reason = "Usage guarded by java version check")
37 public static ProtocolFamily convert(InternetProtocolFamily family) {
38 switch (family) {
39 case IPv4:
40 return StandardProtocolFamily.INET;
41 case IPv6:
42 return StandardProtocolFamily.INET6;
43 default:
44 throw new IllegalArgumentException();
45 }
46 }
47 }