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// Copyright (c) 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef QUICHE_QUIC_CORE_FRAMES_QUIC_CRYPTO_FRAME_H_
#define QUICHE_QUIC_CORE_FRAMES_QUIC_CRYPTO_FRAME_H_
#include <memory>
#include <ostream>
#include "absl/strings/string_view.h"
#include "quic/core/quic_buffer_allocator.h"
#include "quic/core/quic_types.h"
#include "quic/platform/api/quic_export.h"
namespace quic {
struct QUIC_EXPORT_PRIVATE QuicCryptoFrame {
QuicCryptoFrame() = default;
QuicCryptoFrame(EncryptionLevel level,
QuicStreamOffset offset,
QuicPacketLength data_length);
QuicCryptoFrame(EncryptionLevel level,
QuicStreamOffset offset,
absl::string_view data);
~QuicCryptoFrame();
friend QUIC_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
const QuicCryptoFrame& s);
// When writing a crypto frame to a packet, the packet must be encrypted at
// |level|. When a crypto frame is read, the encryption level of the packet it
// was received in is put in |level|.
EncryptionLevel level = ENCRYPTION_INITIAL;
QuicPacketLength data_length = 0;
// When reading, |data_buffer| points to the data that was received in the
// frame. |data_buffer| is not used when writing.
const char* data_buffer = nullptr;
QuicStreamOffset offset = 0; // Location of this data in the stream.
QuicCryptoFrame(EncryptionLevel level,
QuicStreamOffset offset,
const char* data_buffer,
QuicPacketLength data_length);
};
static_assert(sizeof(QuicCryptoFrame) <= 64,
"Keep the QuicCryptoFrame size to a cacheline.");
} // namespace quic
#endif // QUICHE_QUIC_CORE_FRAMES_QUIC_CRYPTO_FRAME_H_
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