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MID is a RFC8260 property on an I-DATA chunk, replacing the SSN property on the DATA chunk in non-interleaved message. The MID stands for "Message Identifier", and it was frequently named "message_id" in the source code, but sometimes "mid". To be consistent and using the same terminology as is most common in the RFC, use "mid" everywhere. This was triggered by the need to introduce yet another "message identifier" - but for now, this is just a refacotring CL. Bug: None Change-Id: I9cca898d9f3a2f162d6f2e4508ec1b4bc8d7308f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/322500 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40876}
63 lines
1.9 KiB
C++
63 lines
1.9 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_FORWARD_TSN_COMMON_H_
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#define NET_DCSCTP_PACKET_CHUNK_FORWARD_TSN_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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namespace dcsctp {
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// Base class for both ForwardTsnChunk and IForwardTsnChunk
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class AnyForwardTsnChunk : public Chunk {
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public:
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struct SkippedStream {
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SkippedStream(StreamID stream_id, SSN ssn)
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: stream_id(stream_id), ssn(ssn), unordered(false), mid(0) {}
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SkippedStream(IsUnordered unordered, StreamID stream_id, MID mid)
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: stream_id(stream_id), ssn(0), unordered(unordered), mid(mid) {}
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StreamID stream_id;
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// Set for FORWARD_TSN
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SSN ssn;
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// Set for I-FORWARD_TSN
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IsUnordered unordered;
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MID mid;
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bool operator==(const SkippedStream& other) const {
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return stream_id == other.stream_id && ssn == other.ssn &&
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unordered == other.unordered && mid == other.mid;
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}
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};
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AnyForwardTsnChunk(TSN new_cumulative_tsn,
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std::vector<SkippedStream> skipped_streams)
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: new_cumulative_tsn_(new_cumulative_tsn),
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skipped_streams_(std::move(skipped_streams)) {}
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TSN new_cumulative_tsn() const { return new_cumulative_tsn_; }
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rtc::ArrayView<const SkippedStream> skipped_streams() const {
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return skipped_streams_;
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}
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private:
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TSN new_cumulative_tsn_;
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std::vector<SkippedStream> skipped_streams_;
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_PACKET_CHUNK_FORWARD_TSN_COMMON_H_
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