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 #ifndef NET_DCSCTP_PACKET_PARAMETER_STATE_COOKIE_PARAMETER_H_ 11 #define NET_DCSCTP_PACKET_PARAMETER_STATE_COOKIE_PARAMETER_H_ 12 #include <stddef.h> 13 #include <stdint.h> 14 15 #include <cstdint> 16 #include <string> 17 #include <vector> 18 19 #include "absl/strings/string_view.h" 20 #include "api/array_view.h" 21 #include "net/dcsctp/packet/parameter/parameter.h" 22 #include "net/dcsctp/packet/tlv_trait.h" 23 24 namespace dcsctp { 25 26 // https://tools.ietf.org/html/rfc4960#section-3.3.3.1 27 struct StateCookieParameterConfig : ParameterConfig { 28 static constexpr int kType = 7; 29 static constexpr size_t kHeaderSize = 4; 30 static constexpr size_t kVariableLengthAlignment = 1; 31 }; 32 33 class StateCookieParameter : public Parameter, 34 public TLVTrait<StateCookieParameterConfig> { 35 public: 36 static constexpr int kType = StateCookieParameterConfig::kType; 37 StateCookieParameter(rtc::ArrayView<const uint8_t> data)38 explicit StateCookieParameter(rtc::ArrayView<const uint8_t> data) 39 : data_(data.begin(), data.end()) {} 40 41 static absl::optional<StateCookieParameter> Parse( 42 rtc::ArrayView<const uint8_t> data); 43 44 void SerializeTo(std::vector<uint8_t>& out) const override; 45 std::string ToString() const override; 46 data()47 rtc::ArrayView<const uint8_t> data() const { return data_; } 48 49 private: 50 std::vector<uint8_t> data_; 51 }; 52 53 } // namespace dcsctp 54 55 #endif // NET_DCSCTP_PACKET_PARAMETER_STATE_COOKIE_PARAMETER_H_ 56