1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef NET_DCSCTP_PACKET_CHUNK_IDATA_CHUNK_H_
#define NET_DCSCTP_PACKET_CHUNK_IDATA_CHUNK_H_
#include <stddef.h>
#include <stdint.h>
#include <cstdint>
#include <string>
#include <utility>
#include <vector>
#include "absl/strings/string_view.h"
#include "api/array_view.h"
#include "net/dcsctp/packet/chunk/chunk.h"
#include "net/dcsctp/packet/chunk/data_common.h"
#include "net/dcsctp/packet/data.h"
#include "net/dcsctp/packet/tlv_trait.h"
namespace dcsctp {
// https://tools.ietf.org/html/rfc8260#section-2.1
struct IDataChunkConfig : ChunkConfig {
static constexpr int kType = 64;
static constexpr size_t kHeaderSize = 20;
static constexpr size_t kVariableLengthAlignment = 1;
};
class IDataChunk : public AnyDataChunk, public TLVTrait<IDataChunkConfig> {
public:
static constexpr int kType = IDataChunkConfig::kType;
// Exposed to allow the retransmission queue to make room for the correct
// header size.
static constexpr size_t kHeaderSize = IDataChunkConfig::kHeaderSize;
IDataChunk(TSN tsn,
StreamID stream_id,
MID message_id,
PPID ppid,
FSN fsn,
std::vector<uint8_t> payload,
const Options& options)
: AnyDataChunk(tsn,
stream_id,
SSN(0),
message_id,
fsn,
ppid,
std::move(payload),
options) {}
explicit IDataChunk(TSN tsn, Data&& data, bool immediate_ack)
: AnyDataChunk(tsn, std::move(data), immediate_ack) {}
static absl::optional<IDataChunk> Parse(rtc::ArrayView<const uint8_t> data);
void SerializeTo(std::vector<uint8_t>& out) const override;
std::string ToString() const override;
};
} // namespace dcsctp
#endif // NET_DCSCTP_PACKET_CHUNK_IDATA_CHUNK_H_
|
