mirror of
https://github.com/mollyim/webrtc.git
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4b7024b572
This reverts commit 2db59a6584.
Reason for revert: Causes msan-issue in crc32c, reading uninitialized
memory.
Bug: webrtc:12943, chromium:1275559
Change-Id: I05f1012d896aeaca86c4562e0df15fa7ea326d60
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/239560
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35461}
97 lines
3 KiB
C++
97 lines
3 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_DATA_COMMON_H_
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#define NET_DCSCTP_PACKET_CHUNK_DATA_COMMON_H_
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#include <stdint.h>
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#include <utility>
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#include <vector>
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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/data.h"
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namespace dcsctp {
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// Base class for DataChunk and IDataChunk
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class AnyDataChunk : public Chunk {
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public:
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// Represents the "immediate ack" flag on DATA/I-DATA, from RFC7053.
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using ImmediateAckFlag = webrtc::StrongAlias<class ImmediateAckFlagTag, bool>;
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// Data chunk options.
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// See https://tools.ietf.org/html/rfc4960#section-3.3.1
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struct Options {
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Data::IsEnd is_end = Data::IsEnd(false);
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Data::IsBeginning is_beginning = Data::IsBeginning(false);
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IsUnordered is_unordered = IsUnordered(false);
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ImmediateAckFlag immediate_ack = ImmediateAckFlag(false);
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};
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TSN tsn() const { return tsn_; }
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Options options() const {
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Options options;
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options.is_end = data_.is_end;
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options.is_beginning = data_.is_beginning;
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options.is_unordered = data_.is_unordered;
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options.immediate_ack = immediate_ack_;
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return options;
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}
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StreamID stream_id() const { return data_.stream_id; }
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SSN ssn() const { return data_.ssn; }
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MID message_id() const { return data_.message_id; }
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FSN fsn() const { return data_.fsn; }
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PPID ppid() const { return data_.ppid; }
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rtc::ArrayView<const uint8_t> payload() const { return data_.payload; }
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// Extracts the Data from the chunk, as a destructive action.
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Data extract() && { return std::move(data_); }
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AnyDataChunk(TSN tsn,
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StreamID stream_id,
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SSN ssn,
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MID message_id,
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FSN fsn,
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PPID ppid,
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std::vector<uint8_t> payload,
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const Options& options)
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: tsn_(tsn),
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data_(stream_id,
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ssn,
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message_id,
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fsn,
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ppid,
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std::move(payload),
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options.is_beginning,
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options.is_end,
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options.is_unordered),
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immediate_ack_(options.immediate_ack) {}
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AnyDataChunk(TSN tsn, Data data, bool immediate_ack)
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: tsn_(tsn), data_(std::move(data)), immediate_ack_(immediate_ack) {}
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protected:
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// Bits in `flags` header field.
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static constexpr int kFlagsBitEnd = 0;
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static constexpr int kFlagsBitBeginning = 1;
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static constexpr int kFlagsBitUnordered = 2;
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static constexpr int kFlagsBitImmediateAck = 3;
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private:
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TSN tsn_;
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Data data_;
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ImmediateAckFlag immediate_ack_;
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_PACKET_CHUNK_DATA_COMMON_H_
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