blob: e8fa67c8f7367cf1cb9c8236323a5fd7fafd3f6f [file] [log] [blame]
* 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.
#include <stddef.h>
#include <algorithm>
#include <cstdint>
#include <iterator>
#include <memory>
#include <string>
#include <type_traits>
#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/tlv_trait.h"
#include "rtc_base/strings/string_builder.h"
namespace dcsctp {
class Parameter {
Parameter() {}
virtual ~Parameter() = default;
Parameter(const Parameter& other) = default;
Parameter& operator=(const Parameter& other) = default;
virtual void SerializeTo(std::vector<uint8_t>& out) const = 0;
virtual std::string ToString() const = 0;
struct ParameterDescriptor {
ParameterDescriptor(uint16_t type, rtc::ArrayView<const uint8_t> data)
: type(type), data(data) {}
uint16_t type;
rtc::ArrayView<const uint8_t> data;
class Parameters {
class Builder {
Builder() {}
Builder& Add(const Parameter& p);
Parameters Build() { return Parameters(std::move(data_)); }
std::vector<uint8_t> data_;
static absl::optional<Parameters> Parse(rtc::ArrayView<const uint8_t> data);
Parameters() {}
Parameters(Parameters&& other) = default;
Parameters& operator=(Parameters&& other) = default;
rtc::ArrayView<const uint8_t> data() const { return data_; }
std::vector<ParameterDescriptor> descriptors() const;
template <typename P>
absl::optional<P> get() const {
static_assert(std::is_base_of<Parameter, P>::value,
"Template parameter not derived from Parameter");
for (const auto& p : descriptors()) {
if (p.type == P::kType) {
return P::Parse(;
return absl::nullopt;
explicit Parameters(std::vector<uint8_t> data) : data_(std::move(data)) {}
std::vector<uint8_t> data_;
struct ParameterConfig {
static constexpr int kTypeSizeInBytes = 2;
} // namespace dcsctp