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2bfb5db548
https://datatracker.ietf.org/doc/draft-ietf-tsvwg-sctp-zero-checksum/06/ The previous implementation was for version 00, and since then changes have been made. The chunk that is used to negotiate this capability has now grown to include an additional property - the sender's alternate error detection method. Bug: webrtc:14997 Change-Id: I78043d187b79f40bbadbcba02eae6eedf54f30f9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/336380 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41759}
60 lines
2 KiB
C++
60 lines
2 KiB
C++
/*
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* Copyright (c) 2023 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_PARAMETER_ZERO_CHECKSUM_ACCEPTABLE_CHUNK_PARAMETER_H_
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#define NET_DCSCTP_PACKET_PARAMETER_ZERO_CHECKSUM_ACCEPTABLE_CHUNK_PARAMETER_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 <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/parameter/parameter.h"
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#include "net/dcsctp/packet/tlv_trait.h"
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#include "net/dcsctp/public/types.h"
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namespace dcsctp {
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// https://datatracker.ietf.org/doc/draft-ietf-tsvwg-sctp-zero-checksum/
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struct ZeroChecksumAcceptableChunkParameterConfig : ParameterConfig {
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static constexpr int kType = 0x8001;
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static constexpr size_t kHeaderSize = 8;
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static constexpr size_t kVariableLengthAlignment = 0;
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};
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class ZeroChecksumAcceptableChunkParameter
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: public Parameter,
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public TLVTrait<ZeroChecksumAcceptableChunkParameterConfig> {
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public:
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static constexpr int kType =
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ZeroChecksumAcceptableChunkParameterConfig::kType;
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explicit ZeroChecksumAcceptableChunkParameter(
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ZeroChecksumAlternateErrorDetectionMethod error_detection_method)
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: error_detection_method_(error_detection_method) {}
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static absl::optional<ZeroChecksumAcceptableChunkParameter> Parse(
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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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ZeroChecksumAlternateErrorDetectionMethod error_detection_method() const {
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return error_detection_method_;
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}
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private:
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ZeroChecksumAlternateErrorDetectionMethod error_detection_method_;
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_PACKET_PARAMETER_ZERO_CHECKSUM_ACCEPTABLE_CHUNK_PARAMETER_H_
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