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.handler.codec.rtsp;
17
18 import io.netty.handler.codec.http.HttpVersion;
19 import io.netty.util.internal.ObjectUtil;
20
21 import java.util.Locale;
22
23 /**
24 * The version of RTSP.
25 */
26 public final class RtspVersions {
27
28 /**
29 * RTSP/1.0
30 */
31 public static final HttpVersion RTSP_1_0 = new HttpVersion("RTSP", 1, 0, true);
32
33 /**
34 * Returns an existing or new {@link HttpVersion} instance which matches to
35 * the specified RTSP version string. If the specified {@code text} is
36 * equal to {@code "RTSP/1.0"}, {@link #RTSP_1_0} will be returned.
37 * Otherwise, a new {@link HttpVersion} instance will be returned.
38 */
39 public static HttpVersion valueOf(String text) {
40 ObjectUtil.checkNotNull(text, "text");
41
42 if (text.isEmpty()) {
43 throw new IllegalArgumentException("text must not be empty");
44 }
45 // toUpperCase() must specify Locale.US so the comparison against "RTSP/1.0" is not
46 // affected by the JVM default locale (e.g. Turkish, where 'i' uppercases to 'İ').
47 String upper = text.toUpperCase(Locale.US);
48 if ("RTSP/1.0".equals(upper)) {
49 return RTSP_1_0;
50 }
51
52 return new HttpVersion(upper, true);
53 }
54
55 private RtspVersions() {
56 }
57 }