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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // A server side dispatcher which dispatches a given client's data to their | 5 // A server side dispatcher which dispatches a given client's data to their |
| 6 // stream. | 6 // stream. |
| 7 | 7 |
| 8 #ifndef NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ | 8 #ifndef NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ |
| 9 #define NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ | 9 #define NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ |
| 10 | 10 |
| 11 #include <memory> | 11 #include <memory> |
| 12 #include <unordered_map> | 12 #include <unordered_map> |
| 13 #include <vector> | 13 #include <vector> |
| 14 | 14 |
| 15 #include "base/macros.h" | 15 #include "base/macros.h" |
| 16 #include "net/base/ip_endpoint.h" | 16 #include "net/base/ip_endpoint.h" |
| 17 #include "net/base/linked_hash_map.h" | 17 #include "net/base/linked_hash_map.h" |
| 18 #include "net/quic/core/crypto/quic_compressed_certs_cache.h" | 18 #include "net/quic/core/crypto/quic_compressed_certs_cache.h" |
| 19 #include "net/quic/core/crypto/quic_random.h" | 19 #include "net/quic/core/crypto/quic_random.h" |
| 20 #include "net/quic/core/quic_blocked_writer_interface.h" | 20 #include "net/quic/core/quic_blocked_writer_interface.h" |
| 21 #include "net/quic/core/quic_buffered_packet_store.h" | 21 #include "net/quic/core/quic_buffered_packet_store.h" |
| 22 #include "net/quic/core/quic_connection.h" | 22 #include "net/quic/core/quic_connection.h" |
| 23 #include "net/quic/core/quic_crypto_server_stream.h" |
| 23 #include "net/quic/core/quic_protocol.h" | 24 #include "net/quic/core/quic_protocol.h" |
| 24 #include "net/quic/core/quic_server_session_base.h" | 25 #include "net/quic/core/quic_server_session_base.h" |
| 25 | 26 |
| 26 #include "net/tools/quic/stateless_rejector.h" | 27 #include "net/tools/quic/stateless_rejector.h" |
| 27 #include "net/tools/quic/quic_process_packet_interface.h" | 28 #include "net/tools/quic/quic_process_packet_interface.h" |
| 28 #include "net/tools/quic/quic_time_wait_list_manager.h" | 29 #include "net/tools/quic/quic_time_wait_list_manager.h" |
| 29 | 30 |
| 30 namespace net { | 31 namespace net { |
| 31 | 32 |
| 32 class QuicConfig; | 33 class QuicConfig; |
| 33 class QuicCryptoServerConfig; | 34 class QuicCryptoServerConfig; |
| 34 class QuicServerSessionBase; | |
| 35 | 35 |
| 36 namespace test { | 36 namespace test { |
| 37 class QuicDispatcherPeer; | 37 class QuicDispatcherPeer; |
| 38 } // namespace test | 38 } // namespace test |
| 39 | 39 |
| 40 class QuicDispatcher : public QuicServerSessionBase::Visitor, | 40 class QuicDispatcher : public QuicServerSessionBase::Visitor, |
| 41 public ProcessPacketInterface, | 41 public ProcessPacketInterface, |
| 42 public QuicBlockedWriterInterface, | 42 public QuicBlockedWriterInterface, |
| 43 public QuicFramerVisitorInterface, | 43 public QuicFramerVisitorInterface, |
| 44 public QuicBufferedPacketStore::VisitorInterface { | 44 public QuicBufferedPacketStore::VisitorInterface { |
| 45 public: | 45 public: |
| 46 // Ideally we'd have a linked_hash_set: the boolean is unused. | 46 // Ideally we'd have a linked_hash_set: the boolean is unused. |
| 47 typedef linked_hash_map<QuicBlockedWriterInterface*, | 47 typedef linked_hash_map<QuicBlockedWriterInterface*, |
| 48 bool, | 48 bool, |
| 49 QuicBlockedWriterInterfacePtrHash> | 49 QuicBlockedWriterInterfacePtrHash> |
| 50 WriteBlockedList; | 50 WriteBlockedList; |
| 51 | 51 |
| 52 QuicDispatcher(const QuicConfig& config, | 52 QuicDispatcher(const QuicConfig& config, |
| 53 const QuicCryptoServerConfig* crypto_config, | 53 const QuicCryptoServerConfig* crypto_config, |
| 54 QuicVersionManager* version_manager, | 54 QuicVersionManager* version_manager, |
| 55 std::unique_ptr<QuicConnectionHelperInterface> helper, | 55 std::unique_ptr<QuicConnectionHelperInterface> helper, |
| 56 std::unique_ptr<QuicServerSessionBase::Helper> session_helper, | 56 std::unique_ptr<QuicCryptoServerStream::Helper> session_helper, |
| 57 std::unique_ptr<QuicAlarmFactory> alarm_factory); | 57 std::unique_ptr<QuicAlarmFactory> alarm_factory); |
| 58 | 58 |
| 59 ~QuicDispatcher() override; | 59 ~QuicDispatcher() override; |
| 60 | 60 |
| 61 // Takes ownership of |writer|. | 61 // Takes ownership of |writer|. |
| 62 void InitializeWithWriter(QuicPacketWriter* writer); | 62 void InitializeWithWriter(QuicPacketWriter* writer); |
| 63 | 63 |
| 64 // Process the incoming packet by creating a new session, passing it to | 64 // Process the incoming packet by creating a new session, passing it to |
| 65 // an existing session, or passing it to the time wait list. | 65 // an existing session, or passing it to the time wait list. |
| 66 void ProcessPacket(const IPEndPoint& server_address, | 66 void ProcessPacket(const IPEndPoint& server_address, |
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| 220 const QuicCryptoServerConfig* crypto_config() const { return crypto_config_; } | 220 const QuicCryptoServerConfig* crypto_config() const { return crypto_config_; } |
| 221 | 221 |
| 222 QuicCompressedCertsCache* compressed_certs_cache() { | 222 QuicCompressedCertsCache* compressed_certs_cache() { |
| 223 return &compressed_certs_cache_; | 223 return &compressed_certs_cache_; |
| 224 } | 224 } |
| 225 | 225 |
| 226 QuicFramer* framer() { return &framer_; } | 226 QuicFramer* framer() { return &framer_; } |
| 227 | 227 |
| 228 QuicConnectionHelperInterface* helper() { return helper_.get(); } | 228 QuicConnectionHelperInterface* helper() { return helper_.get(); } |
| 229 | 229 |
| 230 QuicServerSessionBase::Helper* session_helper() { | 230 QuicCryptoServerStream::Helper* session_helper() { |
| 231 return session_helper_.get(); | 231 return session_helper_.get(); |
| 232 } | 232 } |
| 233 | 233 |
| 234 QuicAlarmFactory* alarm_factory() { return alarm_factory_.get(); } | 234 QuicAlarmFactory* alarm_factory() { return alarm_factory_.get(); } |
| 235 | 235 |
| 236 QuicPacketWriter* writer() { return writer_.get(); } | 236 QuicPacketWriter* writer() { return writer_.get(); } |
| 237 | 237 |
| 238 // Creates per-connection packet writers out of the QuicDispatcher's shared | 238 // Creates per-connection packet writers out of the QuicDispatcher's shared |
| 239 // QuicPacketWriter. The per-connection writers' IsWriteBlocked() state must | 239 // QuicPacketWriter. The per-connection writers' IsWriteBlocked() state must |
| 240 // always be the same as the shared writer's IsWriteBlocked(), or else the | 240 // always be the same as the shared writer's IsWriteBlocked(), or else the |
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| 321 // Entity that manages connection_ids in time wait state. | 321 // Entity that manages connection_ids in time wait state. |
| 322 std::unique_ptr<QuicTimeWaitListManager> time_wait_list_manager_; | 322 std::unique_ptr<QuicTimeWaitListManager> time_wait_list_manager_; |
| 323 | 323 |
| 324 // The list of closed but not-yet-deleted sessions. | 324 // The list of closed but not-yet-deleted sessions. |
| 325 std::vector<QuicServerSessionBase*> closed_session_list_; | 325 std::vector<QuicServerSessionBase*> closed_session_list_; |
| 326 | 326 |
| 327 // The helper used for all connections. | 327 // The helper used for all connections. |
| 328 std::unique_ptr<QuicConnectionHelperInterface> helper_; | 328 std::unique_ptr<QuicConnectionHelperInterface> helper_; |
| 329 | 329 |
| 330 // The helper used for all sessions. | 330 // The helper used for all sessions. |
| 331 std::unique_ptr<QuicServerSessionBase::Helper> session_helper_; | 331 std::unique_ptr<QuicCryptoServerStream::Helper> session_helper_; |
| 332 | 332 |
| 333 // Creates alarms. | 333 // Creates alarms. |
| 334 std::unique_ptr<QuicAlarmFactory> alarm_factory_; | 334 std::unique_ptr<QuicAlarmFactory> alarm_factory_; |
| 335 | 335 |
| 336 // An alarm which deletes closed sessions. | 336 // An alarm which deletes closed sessions. |
| 337 std::unique_ptr<QuicAlarm> delete_sessions_alarm_; | 337 std::unique_ptr<QuicAlarm> delete_sessions_alarm_; |
| 338 | 338 |
| 339 // The writer to write to the socket with. | 339 // The writer to write to the socket with. |
| 340 std::unique_ptr<QuicPacketWriter> writer_; | 340 std::unique_ptr<QuicPacketWriter> writer_; |
| 341 | 341 |
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| 361 // A backward counter of how many new sessions can be create within current | 361 // A backward counter of how many new sessions can be create within current |
| 362 // event loop. When reaches 0, it means can't create sessions for now. | 362 // event loop. When reaches 0, it means can't create sessions for now. |
| 363 int16_t new_sessions_allowed_per_event_loop_; | 363 int16_t new_sessions_allowed_per_event_loop_; |
| 364 | 364 |
| 365 DISALLOW_COPY_AND_ASSIGN(QuicDispatcher); | 365 DISALLOW_COPY_AND_ASSIGN(QuicDispatcher); |
| 366 }; | 366 }; |
| 367 | 367 |
| 368 } // namespace net | 368 } // namespace net |
| 369 | 369 |
| 370 #endif // NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ | 370 #endif // NET_TOOLS_QUIC_QUIC_DISPATCHER_H_ |
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