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https://github.com/mollyim/webrtc.git
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b87746b155
Quite a large commit, but mostly trivial. It adds all the (in dcSCTP) supported parameters, error causes and chunks as an object model, with serializers and deserializers. They are verified with packet captures where available, that have been captured with Wireshark against a reference implementation. This _could_ be split in parameter/ as one commit, error_cause/ in the following, and chunk/ as the third, but as each chunk/parameter is completely isolated from the other, reviewing it should be linear with the number of chunks/parameters and having them in more commits wouldn't change that, taken all those three commits into account. Bug: webrtc:12614 Change-Id: Ie83c9a22cae6e3a39e35ef26fd532837a6387a08 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/213347 Commit-Queue: Victor Boivie <boivie@webrtc.org> Reviewed-by: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33625}
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef NET_DCSCTP_PACKET_CHUNK_INIT_CHUNK_H_
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#define NET_DCSCTP_PACKET_CHUNK_INIT_CHUNK_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/strings/string_view.h"
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#include "api/array_view.h"
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#include "net/dcsctp/packet/chunk/chunk.h"
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#include "net/dcsctp/packet/parameter/parameter.h"
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#include "net/dcsctp/packet/tlv_trait.h"
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namespace dcsctp {
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// https://tools.ietf.org/html/rfc4960#section-3.3.2
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struct InitChunkConfig : ChunkConfig {
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static constexpr int kType = 1;
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static constexpr size_t kHeaderSize = 20;
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static constexpr size_t kVariableLengthAlignment = 1;
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};
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class InitChunk : public Chunk, public TLVTrait<InitChunkConfig> {
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public:
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static constexpr int kType = InitChunkConfig::kType;
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InitChunk(VerificationTag initiate_tag,
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uint32_t a_rwnd,
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uint16_t nbr_outbound_streams,
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uint16_t nbr_inbound_streams,
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TSN initial_tsn,
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Parameters parameters)
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: initiate_tag_(initiate_tag),
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a_rwnd_(a_rwnd),
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nbr_outbound_streams_(nbr_outbound_streams),
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nbr_inbound_streams_(nbr_inbound_streams),
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initial_tsn_(initial_tsn),
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parameters_(std::move(parameters)) {}
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InitChunk(InitChunk&& other) = default;
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InitChunk& operator=(InitChunk&& other) = default;
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static absl::optional<InitChunk> Parse(rtc::ArrayView<const uint8_t> data);
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void SerializeTo(std::vector<uint8_t>& out) const override;
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std::string ToString() const override;
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VerificationTag initiate_tag() const { return initiate_tag_; }
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uint32_t a_rwnd() const { return a_rwnd_; }
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uint16_t nbr_outbound_streams() const { return nbr_outbound_streams_; }
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uint16_t nbr_inbound_streams() const { return nbr_inbound_streams_; }
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TSN initial_tsn() const { return initial_tsn_; }
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const Parameters& parameters() const { return parameters_; }
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private:
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VerificationTag initiate_tag_;
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uint32_t a_rwnd_;
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uint16_t nbr_outbound_streams_;
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uint16_t nbr_inbound_streams_;
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TSN initial_tsn_;
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Parameters parameters_;
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_PACKET_CHUNK_INIT_CHUNK_H_
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