| // 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 NET_THIRD_PARTY_QUIC_CORE_LEGACY_QUIC_STREAM_ID_MANAGER_H_ |
| #define NET_THIRD_PARTY_QUIC_CORE_LEGACY_QUIC_STREAM_ID_MANAGER_H_ |
| |
| #include "net/third_party/quic/core/quic_stream_id_manager.h" |
| |
| namespace quic { |
| |
| namespace test { |
| class QuicSessionPeer; |
| } // namespace test |
| |
| class QuicSession; |
| |
| // Manages Google QUIC stream IDs. This manager is responsible for two |
| // questions: 1) can next outgoing stream ID be allocated (if yes, what is the |
| // next outgoing stream ID) and 2) can a new incoming stream be opened. |
| class QUIC_EXPORT_PRIVATE LegacyQuicStreamIdManager { |
| public: |
| LegacyQuicStreamIdManager(QuicSession* session, |
| size_t max_open_outgoing_streams, |
| size_t max_open_incoming_streams); |
| |
| ~LegacyQuicStreamIdManager(); |
| |
| // Returns true if the next outgoing stream ID can be allocated. |
| bool CanOpenNextOutgoingStream( |
| size_t current_num_open_outgoing_streams) const; |
| |
| // Returns true if a new incoming stream can be opened. |
| bool CanOpenIncomingStream(size_t current_num_open_incoming_streams) const; |
| |
| bool MaybeIncreaseLargestPeerStreamId(const QuicStreamId id); |
| |
| // Returns true if |id| is still available. |
| bool IsAvailableStream(QuicStreamId id) const; |
| |
| // Returns the stream ID for a new outgoing stream, and increments the |
| // underlying counter. |
| QuicStreamId GetNextOutgoingStreamId(); |
| |
| // Return true if |id| is peer initiated. |
| bool IsIncomingStream(QuicStreamId id) const; |
| |
| size_t MaxAvailableStreams() const; |
| |
| void set_max_open_incoming_streams(size_t max_open_incoming_streams) { |
| max_open_incoming_streams_ = max_open_incoming_streams; |
| } |
| |
| void set_max_open_outgoing_streams(size_t max_open_outgoing_streams) { |
| max_open_outgoing_streams_ = max_open_outgoing_streams; |
| } |
| |
| void set_largest_peer_created_stream_id( |
| QuicStreamId largest_peer_created_stream_id) { |
| largest_peer_created_stream_id_ = largest_peer_created_stream_id; |
| } |
| |
| size_t max_open_incoming_streams() const { |
| return max_open_incoming_streams_; |
| } |
| |
| size_t max_open_outgoing_streams() const { |
| return max_open_outgoing_streams_; |
| } |
| |
| QuicStreamId next_outgoing_stream_id() const { |
| return next_outgoing_stream_id_; |
| } |
| |
| QuicStreamId largest_peer_created_stream_id() const { |
| return largest_peer_created_stream_id_; |
| } |
| |
| private: |
| friend class test::QuicSessionPeer; |
| |
| size_t GetNumAvailableStreams() const; |
| |
| // Not owned. |
| QuicSession* session_; |
| |
| // The maximum number of outgoing streams this connection can open. |
| size_t max_open_outgoing_streams_; |
| |
| // The maximum number of incoming streams this connection will allow. |
| size_t max_open_incoming_streams_; |
| |
| // The ID to use for the next outgoing stream. |
| QuicStreamId next_outgoing_stream_id_; |
| |
| // Set of stream ids that are less than the largest stream id that has been |
| // received, but are nonetheless available to be created. |
| QuicUnorderedSet<QuicStreamId> available_streams_; |
| |
| QuicStreamId largest_peer_created_stream_id_; |
| }; |
| |
| } // namespace quic |
| |
| #endif // NET_THIRD_PARTY_QUIC_CORE_LEGACY_QUIC_STREAM_ID_MANAGER_H_ |