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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}
58 lines
1.9 KiB
C++
58 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_TESTING_DATA_GENERATOR_H_
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#define NET_DCSCTP_TESTING_DATA_GENERATOR_H_
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#include <cstdint>
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#include <vector>
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#include "absl/strings/string_view.h"
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#include "absl/types/optional.h"
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#include "api/array_view.h"
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#include "net/dcsctp/common/internal_types.h"
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#include "net/dcsctp/packet/data.h"
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namespace dcsctp {
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struct DataGeneratorOptions {
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StreamID stream_id = StreamID(1);
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absl::optional<MID> mid = absl::nullopt;
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PPID ppid = PPID(53);
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};
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// Generates Data with correct sequence numbers, and used only in unit tests.
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class DataGenerator {
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public:
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explicit DataGenerator(MID start_mid = MID(0)) : mid_(start_mid) {}
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// Generates ordered "data" with the provided `payload` and flags, which can
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// contain "B" for setting the "is_beginning" flag, and/or "E" for setting the
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// "is_end" flag.
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Data Ordered(std::vector<uint8_t> payload,
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absl::string_view flags = "",
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DataGeneratorOptions opts = {});
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// Generates unordered "data" with the provided `payload` and flags, which can
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// contain "B" for setting the "is_beginning" flag, and/or "E" for setting the
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// "is_end" flag.
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Data Unordered(std::vector<uint8_t> payload,
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absl::string_view flags = "",
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DataGeneratorOptions opts = {});
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// Resets the Message ID identifier - simulating a "stream reset".
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void ResetStream() { mid_ = MID(0); }
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private:
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MID mid_;
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FSN fsn_ = FSN(0);
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_TESTING_DATA_GENERATOR_H_
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