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Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/packet/chunk/init_chunk.h')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/packet/chunk/init_chunk.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/chunk/init_chunk.h b/third_party/libwebrtc/net/dcsctp/packet/chunk/init_chunk.h new file mode 100644 index 0000000000..38f9994caa --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/packet/chunk/init_chunk.h @@ -0,0 +1,77 @@ +/* + * 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_CHUNK_INIT_CHUNK_H_ +#define NET_DCSCTP_PACKET_CHUNK_INIT_CHUNK_H_ +#include <stddef.h> +#include <stdint.h> + +#include <string> +#include <utility> +#include <vector> + +#include "absl/strings/string_view.h" +#include "api/array_view.h" +#include "net/dcsctp/packet/chunk/chunk.h" +#include "net/dcsctp/packet/parameter/parameter.h" +#include "net/dcsctp/packet/tlv_trait.h" + +namespace dcsctp { + +// https://tools.ietf.org/html/rfc4960#section-3.3.2 +struct InitChunkConfig : ChunkConfig { + static constexpr int kType = 1; + static constexpr size_t kHeaderSize = 20; + static constexpr size_t kVariableLengthAlignment = 1; +}; + +class InitChunk : public Chunk, public TLVTrait<InitChunkConfig> { + public: + static constexpr int kType = InitChunkConfig::kType; + + InitChunk(VerificationTag initiate_tag, + uint32_t a_rwnd, + uint16_t nbr_outbound_streams, + uint16_t nbr_inbound_streams, + TSN initial_tsn, + Parameters parameters) + : initiate_tag_(initiate_tag), + a_rwnd_(a_rwnd), + nbr_outbound_streams_(nbr_outbound_streams), + nbr_inbound_streams_(nbr_inbound_streams), + initial_tsn_(initial_tsn), + parameters_(std::move(parameters)) {} + + InitChunk(InitChunk&& other) = default; + InitChunk& operator=(InitChunk&& other) = default; + + static absl::optional<InitChunk> Parse(rtc::ArrayView<const uint8_t> data); + + void SerializeTo(std::vector<uint8_t>& out) const override; + std::string ToString() const override; + + VerificationTag initiate_tag() const { return initiate_tag_; } + uint32_t a_rwnd() const { return a_rwnd_; } + uint16_t nbr_outbound_streams() const { return nbr_outbound_streams_; } + uint16_t nbr_inbound_streams() const { return nbr_inbound_streams_; } + TSN initial_tsn() const { return initial_tsn_; } + const Parameters& parameters() const { return parameters_; } + + private: + VerificationTag initiate_tag_; + uint32_t a_rwnd_; + uint16_t nbr_outbound_streams_; + uint16_t nbr_inbound_streams_; + TSN initial_tsn_; + Parameters parameters_; +}; + +} // namespace dcsctp + +#endif // NET_DCSCTP_PACKET_CHUNK_INIT_CHUNK_H_ |