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/*
* 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_SHUTDOWN_CHUNK_H_
#define NET_DCSCTP_PACKET_CHUNK_SHUTDOWN_CHUNK_H_
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <vector>
#include "absl/strings/string_view.h"
#include "api/array_view.h"
#include "net/dcsctp/packet/chunk/chunk.h"
#include "net/dcsctp/packet/tlv_trait.h"
namespace dcsctp {
// https://tools.ietf.org/html/rfc4960#section-3.3.8
struct ShutdownChunkConfig : ChunkConfig {
static constexpr int kType = 7;
static constexpr size_t kHeaderSize = 8;
static constexpr size_t kVariableLengthAlignment = 0;
};
class ShutdownChunk : public Chunk, public TLVTrait<ShutdownChunkConfig> {
public:
static constexpr int kType = ShutdownChunkConfig::kType;
explicit ShutdownChunk(TSN cumulative_tsn_ack)
: cumulative_tsn_ack_(cumulative_tsn_ack) {}
static absl::optional<ShutdownChunk> Parse(
rtc::ArrayView<const uint8_t> data);
void SerializeTo(std::vector<uint8_t>& out) const override;
std::string ToString() const override;
TSN cumulative_tsn_ack() const { return cumulative_tsn_ack_; }
private:
TSN cumulative_tsn_ack_;
};
} // namespace dcsctp
#endif // NET_DCSCTP_PACKET_CHUNK_SHUTDOWN_CHUNK_H_
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