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/*
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef NET_DCSCTP_TESTING_DATA_GENERATOR_H_
#define NET_DCSCTP_TESTING_DATA_GENERATOR_H_
#include <cstdint>
#include <vector>
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "api/array_view.h"
#include "net/dcsctp/common/internal_types.h"
#include "net/dcsctp/packet/data.h"
namespace dcsctp {
struct DataGeneratorOptions {
StreamID stream_id = StreamID(1);
absl::optional<MID> message_id = absl::nullopt;
PPID ppid = PPID(53);
};
// Generates Data with correct sequence numbers, and used only in unit tests.
class DataGenerator {
public:
explicit DataGenerator(MID start_message_id = MID(0))
: message_id_(start_message_id) {}
// Generates ordered "data" with the provided `payload` and flags, which can
// contain "B" for setting the "is_beginning" flag, and/or "E" for setting the
// "is_end" flag.
Data Ordered(std::vector<uint8_t> payload,
absl::string_view flags = "",
DataGeneratorOptions opts = {});
// Generates unordered "data" with the provided `payload` and flags, which can
// contain "B" for setting the "is_beginning" flag, and/or "E" for setting the
// "is_end" flag.
Data Unordered(std::vector<uint8_t> payload,
absl::string_view flags = "",
DataGeneratorOptions opts = {});
// Resets the Message ID identifier - simulating a "stream reset".
void ResetStream() { message_id_ = MID(0); }
private:
MID message_id_;
FSN fsn_ = FSN(0);
};
} // namespace dcsctp
#endif // NET_DCSCTP_TESTING_DATA_GENERATOR_H_
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