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_SUPPORTED_EXTENSIONS_PARAMETER_H_ 11 #define NET_DCSCTP_PACKET_PARAMETER_SUPPORTED_EXTENSIONS_PARAMETER_H_ 12 #include <stddef.h> 13 14 #include <algorithm> 15 #include <cstdint> 16 #include <iterator> 17 #include <string> 18 #include <utility> 19 #include <vector> 20 21 #include "absl/strings/string_view.h" 22 #include "api/array_view.h" 23 #include "net/dcsctp/packet/parameter/parameter.h" 24 #include "net/dcsctp/packet/tlv_trait.h" 25 26 namespace dcsctp { 27 28 // https://tools.ietf.org/html/rfc5061#section-4.2.7 29 struct SupportedExtensionsParameterConfig : ParameterConfig { 30 static constexpr int kType = 0x8008; 31 static constexpr size_t kHeaderSize = 4; 32 static constexpr size_t kVariableLengthAlignment = 1; 33 }; 34 35 class SupportedExtensionsParameter 36 : public Parameter, 37 public TLVTrait<SupportedExtensionsParameterConfig> { 38 public: 39 static constexpr int kType = SupportedExtensionsParameterConfig::kType; 40 SupportedExtensionsParameter(std::vector<uint8_t> chunk_types)41 explicit SupportedExtensionsParameter(std::vector<uint8_t> chunk_types) 42 : chunk_types_(std::move(chunk_types)) {} 43 44 static absl::optional<SupportedExtensionsParameter> Parse( 45 rtc::ArrayView<const uint8_t> data); 46 47 void SerializeTo(std::vector<uint8_t>& out) const override; 48 std::string ToString() const override; 49 supports(uint8_t chunk_type)50 bool supports(uint8_t chunk_type) const { 51 return std::find(chunk_types_.begin(), chunk_types_.end(), chunk_type) != 52 chunk_types_.end(); 53 } 54 chunk_types()55 rtc::ArrayView<const uint8_t> chunk_types() const { return chunk_types_; } 56 57 private: 58 std::vector<uint8_t> chunk_types_; 59 }; 60 } // namespace dcsctp 61 62 #endif // NET_DCSCTP_PACKET_PARAMETER_SUPPORTED_EXTENSIONS_PARAMETER_H_ 63