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// Copyright 2013 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_HTTP_QUIC_HEADERS_STREAM_H_
#define QUICHE_QUIC_CORE_HTTP_QUIC_HEADERS_STREAM_H_
#include <cstddef>
#include <memory>
#include "quic/core/http/quic_header_list.h"
#include "quic/core/quic_packets.h"
#include "quic/core/quic_stream.h"
#include "quic/platform/api/quic_containers.h"
#include "quic/platform/api/quic_export.h"
#include "spdy/core/spdy_framer.h"
namespace quic {
class QuicSpdySession;
namespace test {
class QuicHeadersStreamPeer;
} // namespace test
// Headers in QUIC are sent as HTTP/2 HEADERS or PUSH_PROMISE frames over a
// reserved stream with the id 3. Each endpoint (client and server) will
// allocate an instance of QuicHeadersStream to send and receive headers.
class QUIC_EXPORT_PRIVATE QuicHeadersStream : public QuicStream {
public:
explicit QuicHeadersStream(QuicSpdySession* session);
QuicHeadersStream(const QuicHeadersStream&) = delete;
QuicHeadersStream& operator=(const QuicHeadersStream&) = delete;
~QuicHeadersStream() override;
// QuicStream implementation
void OnDataAvailable() override;
// Release underlying buffer if allowed.
void MaybeReleaseSequencerBuffer();
bool OnStreamFrameAcked(QuicStreamOffset offset,
QuicByteCount data_length,
bool fin_acked,
QuicTime::Delta ack_delay_time,
QuicTime receive_timestamp,
QuicByteCount* newly_acked_length) override;
void OnStreamFrameRetransmitted(QuicStreamOffset offset,
QuicByteCount data_length,
bool fin_retransmitted) override;
void OnStreamReset(const QuicRstStreamFrame& frame) override;
private:
friend class test::QuicHeadersStreamPeer;
// CompressedHeaderInfo includes simple information of a header, including
// offset in headers stream, unacked length and ack listener of this header.
struct QUIC_EXPORT_PRIVATE CompressedHeaderInfo {
CompressedHeaderInfo(
QuicStreamOffset headers_stream_offset,
QuicStreamOffset full_length,
QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener);
CompressedHeaderInfo(const CompressedHeaderInfo& other);
~CompressedHeaderInfo();
// Offset the header was sent on the headers stream.
QuicStreamOffset headers_stream_offset;
// The full length of the header.
QuicByteCount full_length;
// The remaining bytes to be acked.
QuicByteCount unacked_length;
// Ack listener of this header, and it is notified once any of the bytes has
// been acked or retransmitted.
QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener;
};
// Returns true if the session is still connected.
bool IsConnected();
// Override to store mapping from offset, length to ack_listener. This
// ack_listener is notified once data within [offset, offset + length] is
// acked or retransmitted.
void OnDataBuffered(
QuicStreamOffset offset,
QuicByteCount data_length,
const QuicReferenceCountedPointer<QuicAckListenerInterface>& ack_listener)
override;
QuicSpdySession* spdy_session_;
// Headers that have not been fully acked.
QuicCircularDeque<CompressedHeaderInfo> unacked_headers_;
};
} // namespace quic
#endif // QUICHE_QUIC_CORE_HTTP_QUIC_HEADERS_STREAM_H_
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