1 /*
2 * Copyright 2020 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.http3;
17
18 import static io.netty.util.internal.ObjectUtil.checkNotNull;
19
20 class QpackHeaderField {
21
22 /**
23 * <a href="https://www.rfc-editor.org/rfc/rfc9204.html#name-dynamic-table-size">
24 * Section 3.2.1 Dynamic Table Size</a>.
25 * The size of an entry is the sum of its name's length in bytes, its
26 * value's length in bytes, and 32.
27 */
28 static final int ENTRY_OVERHEAD = 32;
29
30 static long sizeOf(CharSequence name, CharSequence value) {
31 return name.length() + value.length() + ENTRY_OVERHEAD;
32 }
33
34 final CharSequence name;
35 final CharSequence value;
36
37 // This constructor can only be used if name and value are ISO-8859-1 encoded.
38 QpackHeaderField(CharSequence name, CharSequence value) {
39 this.name = checkNotNull(name, "name");
40 this.value = checkNotNull(value, "value");
41 }
42
43 long size() {
44 return sizeOf(name, value);
45 }
46
47 @Override
48 public String toString() {
49 return name + ": " + value;
50 }
51 }