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| 1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ | 5 #ifndef NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ |
| 6 #define NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ | 6 #define NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ |
| 7 | 7 |
| 8 #include "net/base/linked_hash_map.h" | 8 #include "net/base/linked_hash_map.h" |
| 9 #include "net/base/net_export.h" | |
| 10 #include "net/quic/core/quic_alarm.h" | 9 #include "net/quic/core/quic_alarm.h" |
| 11 #include "net/quic/core/quic_alarm_factory.h" | 10 #include "net/quic/core/quic_alarm_factory.h" |
| 12 #include "net/quic/core/quic_packets.h" | 11 #include "net/quic/core/quic_packets.h" |
| 13 #include "net/quic/core/quic_time.h" | 12 #include "net/quic/core/quic_time.h" |
| 14 #include "net/quic/platform/api/quic_clock.h" | 13 #include "net/quic/platform/api/quic_clock.h" |
| 14 #include "net/quic/platform/api/quic_export.h" |
| 15 #include "net/quic/platform/api/quic_socket_address.h" | 15 #include "net/quic/platform/api/quic_socket_address.h" |
| 16 | 16 |
| 17 namespace net { | 17 namespace net { |
| 18 | 18 |
| 19 namespace test { | 19 namespace test { |
| 20 class QuicBufferedPacketStorePeer; | 20 class QuicBufferedPacketStorePeer; |
| 21 } // namespace test | 21 } // namespace test |
| 22 | 22 |
| 23 // This class buffers packets for each connection until either | 23 // This class buffers packets for each connection until either |
| 24 // 1) They are requested to be delivered via | 24 // 1) They are requested to be delivered via |
| 25 // DeliverPacket()/DeliverPacketsForNextConnection(), or | 25 // DeliverPacket()/DeliverPacketsForNextConnection(), or |
| 26 // 2) They expire after exceeding their lifetime in the store. | 26 // 2) They expire after exceeding their lifetime in the store. |
| 27 // | 27 // |
| 28 // It can only buffer packets on certain number of connections. It has two pools | 28 // It can only buffer packets on certain number of connections. It has two pools |
| 29 // of connections: connections with CHLO buffered and those without CHLO. The | 29 // of connections: connections with CHLO buffered and those without CHLO. The |
| 30 // latter has its own upper limit along with the max number of connections this | 30 // latter has its own upper limit along with the max number of connections this |
| 31 // store can hold. The former pool can grow till this store is full. | 31 // store can hold. The former pool can grow till this store is full. |
| 32 class NET_EXPORT_PRIVATE QuicBufferedPacketStore { | 32 class QUIC_EXPORT_PRIVATE QuicBufferedPacketStore { |
| 33 public: | 33 public: |
| 34 enum EnqueuePacketResult { | 34 enum EnqueuePacketResult { |
| 35 SUCCESS = 0, | 35 SUCCESS = 0, |
| 36 TOO_MANY_PACKETS, // Too many packets stored up for a certain connection. | 36 TOO_MANY_PACKETS, // Too many packets stored up for a certain connection. |
| 37 TOO_MANY_CONNECTIONS // Too many connections stored up in the store. | 37 TOO_MANY_CONNECTIONS // Too many connections stored up in the store. |
| 38 }; | 38 }; |
| 39 | 39 |
| 40 // A packets with client/server address. | 40 // A packets with client/server address. |
| 41 struct NET_EXPORT_PRIVATE BufferedPacket { | 41 struct QUIC_EXPORT_PRIVATE BufferedPacket { |
| 42 BufferedPacket(std::unique_ptr<QuicReceivedPacket> packet, | 42 BufferedPacket(std::unique_ptr<QuicReceivedPacket> packet, |
| 43 QuicSocketAddress server_address, | 43 QuicSocketAddress server_address, |
| 44 QuicSocketAddress client_address); | 44 QuicSocketAddress client_address); |
| 45 BufferedPacket(BufferedPacket&& other); | 45 BufferedPacket(BufferedPacket&& other); |
| 46 | 46 |
| 47 BufferedPacket& operator=(BufferedPacket&& other); | 47 BufferedPacket& operator=(BufferedPacket&& other); |
| 48 | 48 |
| 49 ~BufferedPacket(); | 49 ~BufferedPacket(); |
| 50 | 50 |
| 51 std::unique_ptr<QuicReceivedPacket> packet; | 51 std::unique_ptr<QuicReceivedPacket> packet; |
| 52 QuicSocketAddress server_address; | 52 QuicSocketAddress server_address; |
| 53 QuicSocketAddress client_address; | 53 QuicSocketAddress client_address; |
| 54 }; | 54 }; |
| 55 | 55 |
| 56 // A queue of BufferedPackets for a connection. | 56 // A queue of BufferedPackets for a connection. |
| 57 struct NET_EXPORT_PRIVATE BufferedPacketList { | 57 struct QUIC_EXPORT_PRIVATE BufferedPacketList { |
| 58 BufferedPacketList(); | 58 BufferedPacketList(); |
| 59 BufferedPacketList(BufferedPacketList&& other); | 59 BufferedPacketList(BufferedPacketList&& other); |
| 60 | 60 |
| 61 BufferedPacketList& operator=(BufferedPacketList&& other); | 61 BufferedPacketList& operator=(BufferedPacketList&& other); |
| 62 | 62 |
| 63 ~BufferedPacketList(); | 63 ~BufferedPacketList(); |
| 64 | 64 |
| 65 std::list<BufferedPacket> buffered_packets; | 65 std::list<BufferedPacket> buffered_packets; |
| 66 QuicTime creation_time; | 66 QuicTime creation_time; |
| 67 }; | 67 }; |
| 68 | 68 |
| 69 typedef linked_hash_map<QuicConnectionId, BufferedPacketList> | 69 typedef linked_hash_map<QuicConnectionId, BufferedPacketList> |
| 70 BufferedPacketMap; | 70 BufferedPacketMap; |
| 71 | 71 |
| 72 class NET_EXPORT_PRIVATE VisitorInterface { | 72 class QUIC_EXPORT_PRIVATE VisitorInterface { |
| 73 public: | 73 public: |
| 74 virtual ~VisitorInterface() {} | 74 virtual ~VisitorInterface() {} |
| 75 | 75 |
| 76 // Called for each expired connection when alarm fires. | 76 // Called for each expired connection when alarm fires. |
| 77 virtual void OnExpiredPackets(QuicConnectionId connection_id, | 77 virtual void OnExpiredPackets(QuicConnectionId connection_id, |
| 78 BufferedPacketList early_arrived_packets) = 0; | 78 BufferedPacketList early_arrived_packets) = 0; |
| 79 }; | 79 }; |
| 80 | 80 |
| 81 QuicBufferedPacketStore(VisitorInterface* vistor, | 81 QuicBufferedPacketStore(VisitorInterface* vistor, |
| 82 const QuicClock* clock, | 82 const QuicClock* clock, |
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| 152 std::unique_ptr<QuicAlarm> expiration_alarm_; | 152 std::unique_ptr<QuicAlarm> expiration_alarm_; |
| 153 | 153 |
| 154 // Keeps track of connection with CHLO buffered up already and the order they | 154 // Keeps track of connection with CHLO buffered up already and the order they |
| 155 // arrive. | 155 // arrive. |
| 156 linked_hash_map<QuicConnectionId, bool> connections_with_chlo_; | 156 linked_hash_map<QuicConnectionId, bool> connections_with_chlo_; |
| 157 }; | 157 }; |
| 158 | 158 |
| 159 } // namespace net | 159 } // namespace net |
| 160 | 160 |
| 161 #endif // NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ | 161 #endif // NET_QUIC_CORE_QUIC_BUFFERED_PACKET_STORE_H_ |
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