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Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/packet/parameter/reconfiguration_response_parameter.h')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/packet/parameter/reconfiguration_response_parameter.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/parameter/reconfiguration_response_parameter.h b/third_party/libwebrtc/net/dcsctp/packet/parameter/reconfiguration_response_parameter.h new file mode 100644 index 0000000000..c5a68acb33 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/packet/parameter/reconfiguration_response_parameter.h @@ -0,0 +1,92 @@ +/* + * 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_PARAMETER_RECONFIGURATION_RESPONSE_PARAMETER_H_ +#define NET_DCSCTP_PACKET_PARAMETER_RECONFIGURATION_RESPONSE_PARAMETER_H_ +#include <stddef.h> + +#include <cstdint> +#include <string> +#include <vector> + +#include "absl/strings/string_view.h" +#include "absl/types/optional.h" +#include "api/array_view.h" +#include "net/dcsctp/common/internal_types.h" +#include "net/dcsctp/packet/parameter/parameter.h" +#include "net/dcsctp/packet/tlv_trait.h" + +namespace dcsctp { + +// https://tools.ietf.org/html/rfc6525#section-4.4 +struct ReconfigurationResponseParameterConfig : ParameterConfig { + static constexpr int kType = 16; + static constexpr size_t kHeaderSize = 12; + static constexpr size_t kVariableLengthAlignment = 4; +}; + +class ReconfigurationResponseParameter + : public Parameter, + public TLVTrait<ReconfigurationResponseParameterConfig> { + public: + static constexpr int kType = ReconfigurationResponseParameterConfig::kType; + + enum class Result { + kSuccessNothingToDo = 0, + kSuccessPerformed = 1, + kDenied = 2, + kErrorWrongSSN = 3, + kErrorRequestAlreadyInProgress = 4, + kErrorBadSequenceNumber = 5, + kInProgress = 6, + }; + + ReconfigurationResponseParameter(ReconfigRequestSN response_sequence_number, + Result result) + : response_sequence_number_(response_sequence_number), + result_(result), + sender_next_tsn_(absl::nullopt), + receiver_next_tsn_(absl::nullopt) {} + + explicit ReconfigurationResponseParameter( + ReconfigRequestSN response_sequence_number, + Result result, + TSN sender_next_tsn, + TSN receiver_next_tsn) + : response_sequence_number_(response_sequence_number), + result_(result), + sender_next_tsn_(sender_next_tsn), + receiver_next_tsn_(receiver_next_tsn) {} + + static absl::optional<ReconfigurationResponseParameter> Parse( + rtc::ArrayView<const uint8_t> data); + + void SerializeTo(std::vector<uint8_t>& out) const override; + std::string ToString() const override; + + ReconfigRequestSN response_sequence_number() const { + return response_sequence_number_; + } + Result result() const { return result_; } + absl::optional<TSN> sender_next_tsn() const { return sender_next_tsn_; } + absl::optional<TSN> receiver_next_tsn() const { return receiver_next_tsn_; } + + private: + static constexpr size_t kNextTsnHeaderSize = 8; + ReconfigRequestSN response_sequence_number_; + Result result_; + absl::optional<TSN> sender_next_tsn_; + absl::optional<TSN> receiver_next_tsn_; +}; + +absl::string_view ToString(ReconfigurationResponseParameter::Result result); + +} // namespace dcsctp + +#endif // NET_DCSCTP_PACKET_PARAMETER_RECONFIGURATION_RESPONSE_PARAMETER_H_ |