xref: /aosp_15_r20/external/webrtc/net/dcsctp/packet/chunk/shutdown_ack_chunk.cc (revision d9f758449e529ab9291ac668be2861e7a55c2422) 
1 /*
2  *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 #include "net/dcsctp/packet/chunk/shutdown_ack_chunk.h"
11 
12 #include <stdint.h>
13 
14 #include <vector>
15 
16 #include "absl/types/optional.h"
17 #include "api/array_view.h"
18 
19 namespace dcsctp {
20 
21 // https://tools.ietf.org/html/rfc4960#section-3.3.9
22 
23 //   0                   1                   2                   3
24 //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
25 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
26 //  |   Type = 8    |Chunk  Flags   |      Length = 4               |
27 //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
28 constexpr int ShutdownAckChunk::kType;
29 
Parse(rtc::ArrayView<const uint8_t> data)30 absl::optional<ShutdownAckChunk> ShutdownAckChunk::Parse(
31     rtc::ArrayView<const uint8_t> data) {
32   if (!ParseTLV(data).has_value()) {
33     return absl::nullopt;
34   }
35   return ShutdownAckChunk();
36 }
37 
SerializeTo(std::vector<uint8_t> & out) const38 void ShutdownAckChunk::SerializeTo(std::vector<uint8_t>& out) const {
39   AllocateTLV(out);
40 }
41 
ToString() const42 std::string ShutdownAckChunk::ToString() const {
43   return "SHUTDOWN-ACK";
44 }
45 
46 }  // namespace dcsctp
47