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_OUTGOING_SSN_RESET_REQUEST_PARAMETER_H_ 11 #define NET_DCSCTP_PACKET_PARAMETER_OUTGOING_SSN_RESET_REQUEST_PARAMETER_H_ 12 #include <stddef.h> 13 #include <stdint.h> 14 15 #include <cstdint> 16 #include <string> 17 #include <utility> 18 #include <vector> 19 20 #include "absl/strings/string_view.h" 21 #include "api/array_view.h" 22 #include "net/dcsctp/common/internal_types.h" 23 #include "net/dcsctp/packet/parameter/parameter.h" 24 #include "net/dcsctp/packet/tlv_trait.h" 25 #include "net/dcsctp/public/types.h" 26 27 namespace dcsctp { 28 29 // https://tools.ietf.org/html/rfc6525#section-4.1 30 struct OutgoingSSNResetRequestParameterConfig : ParameterConfig { 31 static constexpr int kType = 13; 32 static constexpr size_t kHeaderSize = 16; 33 static constexpr size_t kVariableLengthAlignment = 2; 34 }; 35 36 class OutgoingSSNResetRequestParameter 37 : public Parameter, 38 public TLVTrait<OutgoingSSNResetRequestParameterConfig> { 39 public: 40 static constexpr int kType = OutgoingSSNResetRequestParameterConfig::kType; 41 OutgoingSSNResetRequestParameter(ReconfigRequestSN request_sequence_number,ReconfigRequestSN response_sequence_number,TSN sender_last_assigned_tsn,std::vector<StreamID> stream_ids)42 explicit OutgoingSSNResetRequestParameter( 43 ReconfigRequestSN request_sequence_number, 44 ReconfigRequestSN response_sequence_number, 45 TSN sender_last_assigned_tsn, 46 std::vector<StreamID> stream_ids) 47 : request_sequence_number_(request_sequence_number), 48 response_sequence_number_(response_sequence_number), 49 sender_last_assigned_tsn_(sender_last_assigned_tsn), 50 stream_ids_(std::move(stream_ids)) {} 51 52 static absl::optional<OutgoingSSNResetRequestParameter> Parse( 53 rtc::ArrayView<const uint8_t> data); 54 55 void SerializeTo(std::vector<uint8_t>& out) const override; 56 std::string ToString() const override; 57 request_sequence_number()58 ReconfigRequestSN request_sequence_number() const { 59 return request_sequence_number_; 60 } response_sequence_number()61 ReconfigRequestSN response_sequence_number() const { 62 return response_sequence_number_; 63 } sender_last_assigned_tsn()64 TSN sender_last_assigned_tsn() const { return sender_last_assigned_tsn_; } stream_ids()65 rtc::ArrayView<const StreamID> stream_ids() const { return stream_ids_; } 66 67 private: 68 static constexpr size_t kStreamIdSize = sizeof(uint16_t); 69 70 ReconfigRequestSN request_sequence_number_; 71 ReconfigRequestSN response_sequence_number_; 72 TSN sender_last_assigned_tsn_; 73 std::vector<StreamID> stream_ids_; 74 }; 75 76 } // namespace dcsctp 77 78 #endif // NET_DCSCTP_PACKET_PARAMETER_OUTGOING_SSN_RESET_REQUEST_PARAMETER_H_ 79