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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_CHUNK_H_
#define NET_DCSCTP_PACKET_CHUNK_CHUNK_H_
#include <stddef.h>
#include <sys/types.h>
#include <cstdint>
#include <iterator>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "absl/algorithm/container.h"
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "api/array_view.h"
#include "net/dcsctp/packet/data.h"
#include "net/dcsctp/packet/error_cause/error_cause.h"
#include "net/dcsctp/packet/parameter/parameter.h"
#include "net/dcsctp/packet/tlv_trait.h"
namespace dcsctp {
// Base class for all SCTP chunks
class Chunk {
public:
Chunk() {}
virtual ~Chunk() = default;
// Chunks can contain data payloads that shouldn't be copied unnecessarily.
Chunk(Chunk&& other) = default;
Chunk& operator=(Chunk&& other) = default;
Chunk(const Chunk&) = delete;
Chunk& operator=(const Chunk&) = delete;
// Serializes the chunk to `out`, growing it as necessary.
virtual void SerializeTo(std::vector<uint8_t>& out) const = 0;
// Returns a human readable description of this chunk and its parameters.
virtual std::string ToString() const = 0;
};
// Introspects the chunk in `data` and returns a human readable textual
// representation of it, to be used in debugging.
std::string DebugConvertChunkToString(rtc::ArrayView<const uint8_t> data);
struct ChunkConfig {
static constexpr int kTypeSizeInBytes = 1;
};
} // namespace dcsctp
#endif // NET_DCSCTP_PACKET_CHUNK_CHUNK_H_
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