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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.
#include "net/third_party/quiche/src/quic/core/quic_stream_id_manager.h"
namespace quic {
namespace test {
class QuicSessionPeer;
} // namespace test
class QuicSession;
// This class comprises two QuicStreamIdManagers, which manage bidirectional and
// unidirectional stream IDs, respectively.
class QUIC_EXPORT_PRIVATE UberQuicStreamIdManager {
UberQuicStreamIdManager(QuicSession* session,
size_t max_open_outgoing_streams,
size_t max_open_incoming_streams);
// Called when a stream with |stream_id| is registered as a static stream.
void RegisterStaticStream(QuicStreamId id);
// Initialize the maximum allowed outgoing stream id, number of streams, and
// MAX_STREAM_ID advertisement window.
void SetMaxOpenOutgoingStreams(size_t max_streams);
// Initialize the maximum allowed incoming stream id and number of streams.
void SetMaxOpenIncomingStreams(size_t max_streams);
// Returns true if next outgoing bidirectional stream ID can be allocated.
bool CanOpenNextOutgoingBidirectionalStream();
// Returns true if next outgoing unidirectional stream ID can be allocated.
bool CanOpenNextOutgoingUnidirectionalStream();
// Returns the next outgoing bidirectional stream id.
QuicStreamId GetNextOutgoingBidirectionalStreamId();
// Returns the next outgoing unidirectional stream id.
QuicStreamId GetNextOutgoingUnidirectionalStreamId();
// Returns true if allow to open the incoming |id|.
bool MaybeIncreaseLargestPeerStreamId(QuicStreamId id);
// Called when |id| is released.
void OnStreamClosed(QuicStreamId id);
// Called when a MAX_STREAM_ID frame is received.
bool OnMaxStreamIdFrame(const QuicMaxStreamIdFrame& frame);
// Called when a STREAM_ID_BLOCKED frame is received.
bool OnStreamIdBlockedFrame(const QuicStreamIdBlockedFrame& frame);
// Return true if |id| is peer initiated.
bool IsIncomingStream(QuicStreamId id) const;
// Returns true if |id| is still available.
bool IsAvailableStream(QuicStreamId id) const;
size_t GetMaxAllowdIncomingBidirectionalStreams() const;
size_t GetMaxAllowdIncomingUnidirectionalStreams() const;
void SetLargestPeerCreatedStreamId(
QuicStreamId largest_peer_created_stream_id);
QuicStreamId next_outgoing_bidirectional_stream_id() const;
QuicStreamId next_outgoing_unidirectional_stream_id() const;
QuicStreamId max_allowed_outgoing_bidirectional_stream_id() const;
QuicStreamId max_allowed_outgoing_unidirectional_stream_id() const;
size_t max_allowed_outgoing_bidirectional_streams() const;
size_t max_allowed_outgoing_unidirectional_streams() const;
QuicStreamId actual_max_allowed_incoming_bidirectional_stream_id() const;
QuicStreamId actual_max_allowed_incoming_unidirectional_stream_id() const;
QuicStreamId advertised_max_allowed_incoming_bidirectional_stream_id() const;
QuicStreamId advertised_max_allowed_incoming_unidirectional_stream_id() const;
friend class test::QuicSessionPeer;
// Manages stream IDs of bidirectional streams.
QuicStreamIdManager bidirectional_stream_id_manager_;
// Manages stream IDs of unidirectional streams.
QuicStreamIdManager unidirectional_stream_id_manager_;
} // namespace quic