| // Copyright (c) 2012 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_QUIC_QUIC_STREAM_FACTORY_H_ |
| #define NET_QUIC_QUIC_STREAM_FACTORY_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <deque> |
| #include <list> |
| #include <map> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "net/base/address_list.h" |
| #include "net/base/completion_callback.h" |
| #include "net/base/host_port_pair.h" |
| #include "net/base/net_export.h" |
| #include "net/base/network_change_notifier.h" |
| #include "net/cert/cert_database.h" |
| #include "net/http/http_server_properties.h" |
| #include "net/http/http_stream_factory.h" |
| #include "net/log/net_log_with_source.h" |
| #include "net/proxy/proxy_server.h" |
| #include "net/quic/chromium/network_connection.h" |
| #include "net/quic/chromium/quic_chromium_client_session.h" |
| #include "net/quic/chromium/quic_http_stream.h" |
| #include "net/quic/core/quic_client_push_promise_index.h" |
| #include "net/quic/core/quic_config.h" |
| #include "net/quic/core/quic_crypto_stream.h" |
| #include "net/quic/core/quic_protocol.h" |
| #include "net/quic/core/quic_server_id.h" |
| #include "net/ssl/ssl_config_service.h" |
| |
| namespace base { |
| class Value; |
| } |
| |
| namespace net { |
| |
| class CTPolicyEnforcer; |
| class CertVerifier; |
| class ChannelIDService; |
| class ClientSocketFactory; |
| class CTVerifier; |
| class HostResolver; |
| class HttpServerProperties; |
| class NetLog; |
| class QuicClock; |
| class QuicChromiumAlarmFactory; |
| class QuicChromiumConnectionHelper; |
| class QuicCryptoClientStreamFactory; |
| class QuicRandom; |
| class QuicServerInfo; |
| class QuicServerInfoFactory; |
| class QuicStreamFactory; |
| class SocketPerformanceWatcherFactory; |
| class TransportSecurityState; |
| class BidirectionalStreamImpl; |
| |
| namespace test { |
| class QuicStreamFactoryPeer; |
| } // namespace test |
| |
| // When a connection is idle for 30 seconds it will be closed. |
| const int kIdleConnectionTimeoutSeconds = 30; |
| |
| // Indicates cause when connection migration is triggered. |
| enum MigrationCause { |
| EARLY_MIGRATION, // Migration due to path degradation. |
| WRITE_ERROR // Migration due to socket write error. |
| }; |
| |
| // Result of a session migration attempt. |
| enum class MigrationResult { |
| SUCCESS, // Migration succeeded. |
| NO_NEW_NETWORK, // Migration failed since no new network was found. |
| FAILURE // Migration failed for other reasons. |
| }; |
| |
| enum QuicConnectionMigrationStatus { |
| MIGRATION_STATUS_NO_MIGRATABLE_STREAMS, |
| MIGRATION_STATUS_ALREADY_MIGRATED, |
| MIGRATION_STATUS_INTERNAL_ERROR, |
| MIGRATION_STATUS_TOO_MANY_CHANGES, |
| MIGRATION_STATUS_SUCCESS, |
| MIGRATION_STATUS_NON_MIGRATABLE_STREAM, |
| MIGRATION_STATUS_DISABLED, |
| MIGRATION_STATUS_NO_ALTERNATE_NETWORK, |
| MIGRATION_STATUS_MAX |
| }; |
| |
| // Encapsulates a pending request for a QuicHttpStream. |
| // If the request is still pending when it is destroyed, it will |
| // cancel the request with the factory. |
| class NET_EXPORT_PRIVATE QuicStreamRequest { |
| public: |
| explicit QuicStreamRequest(QuicStreamFactory* factory); |
| ~QuicStreamRequest(); |
| |
| // |cert_verify_flags| is bitwise OR'd of CertVerifier::VerifyFlags and it is |
| // passed to CertVerifier::Verify. |
| // |destination| will be resolved and resulting IPEndPoint used to open a |
| // QuicConnection. This can be different than HostPortPair::FromURL(url). |
| int Request(const HostPortPair& destination, |
| PrivacyMode privacy_mode, |
| int cert_verify_flags, |
| const GURL& url, |
| base::StringPiece method, |
| const NetLogWithSource& net_log, |
| const CompletionCallback& callback); |
| |
| void OnRequestComplete(int rv); |
| |
| // Helper method that calls |factory_|'s GetTimeDelayForWaitingJob(). It |
| // returns the amount of time waiting job should be delayed. |
| base::TimeDelta GetTimeDelayForWaitingJob() const; |
| |
| std::unique_ptr<QuicHttpStream> CreateStream(); |
| |
| std::unique_ptr<BidirectionalStreamImpl> CreateBidirectionalStreamImpl(); |
| |
| // Sets |session_|. |
| void SetSession(QuicChromiumClientSession* session); |
| |
| const QuicServerId& server_id() const { return server_id_; } |
| |
| const NetLogWithSource& net_log() const { return net_log_; } |
| |
| private: |
| QuicStreamFactory* factory_; |
| QuicServerId server_id_; |
| NetLogWithSource net_log_; |
| CompletionCallback callback_; |
| base::WeakPtr<QuicChromiumClientSession> session_; |
| |
| DISALLOW_COPY_AND_ASSIGN(QuicStreamRequest); |
| }; |
| |
| // A factory for creating new QuicHttpStreams on top of a pool of |
| // QuicChromiumClientSessions. |
| class NET_EXPORT_PRIVATE QuicStreamFactory |
| : public NetworkChangeNotifier::IPAddressObserver, |
| public NetworkChangeNotifier::NetworkObserver, |
| public SSLConfigService::Observer, |
| public CertDatabase::Observer { |
| public: |
| // This class encompasses |destination| and |server_id|. |
| // |destination| is a HostPortPair which is resolved |
| // and a QuicConnection is made to the resulting IP address. |
| // |server_id| identifies the origin of the request, |
| // the crypto handshake advertises |server_id.host()| to the server, |
| // and the certificate is also matched against |server_id.host()|. |
| class NET_EXPORT_PRIVATE QuicSessionKey { |
| public: |
| QuicSessionKey() = default; |
| QuicSessionKey(const HostPortPair& destination, |
| const QuicServerId& server_id); |
| ~QuicSessionKey() = default; |
| |
| // Needed to be an element of std::set. |
| bool operator<(const QuicSessionKey& other) const; |
| bool operator==(const QuicSessionKey& other) const; |
| |
| const HostPortPair& destination() const { return destination_; } |
| const QuicServerId& server_id() const { return server_id_; } |
| |
| private: |
| HostPortPair destination_; |
| QuicServerId server_id_; |
| }; |
| |
| QuicStreamFactory( |
| NetLog* net_log, |
| HostResolver* host_resolver, |
| SSLConfigService* ssl_config_service, |
| ClientSocketFactory* client_socket_factory, |
| HttpServerProperties* http_server_properties, |
| CertVerifier* cert_verifier, |
| CTPolicyEnforcer* ct_policy_enforcer, |
| ChannelIDService* channel_id_service, |
| TransportSecurityState* transport_security_state, |
| CTVerifier* cert_transparency_verifier, |
| SocketPerformanceWatcherFactory* socket_performance_watcher_factory, |
| QuicCryptoClientStreamFactory* quic_crypto_client_stream_factory, |
| QuicRandom* random_generator, |
| QuicClock* clock, |
| size_t max_packet_length, |
| const std::string& user_agent_id, |
| const QuicVersionVector& supported_versions, |
| bool enable_port_selection, |
| bool always_require_handshake_confirmation, |
| bool disable_connection_pooling, |
| float load_server_info_timeout_srtt_multiplier, |
| bool enable_connection_racing, |
| bool enable_non_blocking_io, |
| bool disable_disk_cache, |
| bool prefer_aes, |
| int socket_receive_buffer_size, |
| bool delay_tcp_race, |
| int max_server_configs_stored_in_properties, |
| bool close_sessions_on_ip_change, |
| bool disable_quic_on_timeout_with_open_streams, |
| int idle_connection_timeout_seconds, |
| int reduced_ping_timeout_seconds, |
| int packet_reader_yield_after_duration_milliseconds, |
| bool migrate_sessions_on_network_change, |
| bool migrate_sessions_early, |
| bool allow_server_migration, |
| bool force_hol_blocking, |
| bool race_cert_verification, |
| bool quic_do_not_fragment, |
| const QuicTagVector& connection_options, |
| bool enable_token_binding); |
| ~QuicStreamFactory() override; |
| |
| // Returns true if there is an existing session for |server_id| or if the |
| // request can be pooled to an existing session to the IP address of |
| // |destination|. |
| bool CanUseExistingSession(const QuicServerId& server_id, |
| const HostPortPair& destination); |
| |
| // Creates a new QuicHttpStream to |host_port_pair| which will be |
| // owned by |request|. |
| // If a matching session already exists, this method will return OK. If no |
| // matching session exists, this will return ERR_IO_PENDING and will invoke |
| // OnRequestComplete asynchronously. |
| int Create(const QuicServerId& server_id, |
| const HostPortPair& destination, |
| int cert_verify_flags, |
| const GURL& url, |
| base::StringPiece method, |
| const NetLogWithSource& net_log, |
| QuicStreamRequest* request); |
| |
| // Called when the handshake for |session| is confirmed. If QUIC is disabled |
| // currently disabled, then it closes the connection and returns true. |
| bool OnHandshakeConfirmed(QuicChromiumClientSession* session); |
| |
| // Called when a TCP job completes for an origin that QUIC potentially |
| // could be used for. |
| void OnTcpJobCompleted(bool succeeded); |
| |
| // Returns true if QUIC is disabled. |
| bool IsQuicDisabled() const; |
| |
| // Called by a session when it becomes idle. |
| void OnIdleSession(QuicChromiumClientSession* session); |
| |
| // Called by a session when it is going away and no more streams should be |
| // created on it. |
| void OnSessionGoingAway(QuicChromiumClientSession* session); |
| |
| // Called by a session after it shuts down. |
| void OnSessionClosed(QuicChromiumClientSession* session); |
| |
| // Called by a session when it times out with open streams. |
| void OnTimeoutWithOpenStreams(); |
| |
| // Cancels a pending request. |
| void CancelRequest(QuicStreamRequest* request); |
| |
| // Closes all current sessions with specified network and QUIC error codes. |
| void CloseAllSessions(int error, QuicErrorCode quic_error); |
| |
| std::unique_ptr<base::Value> QuicStreamFactoryInfoToValue() const; |
| |
| // Delete cached state objects in |crypto_config_|. If |origin_filter| is not |
| // null, only objects on matching origins will be deleted. |
| void ClearCachedStatesInCryptoConfig( |
| const base::Callback<bool(const GURL&)>& origin_filter); |
| |
| // Helper method that configures a DatagramClientSocket. Socket is |
| // bound to the default network if the |network| param is |
| // NetworkChangeNotifier::kInvalidNetworkHandle. |
| // Returns net_error code. |
| int ConfigureSocket(DatagramClientSocket* socket, |
| IPEndPoint addr, |
| NetworkChangeNotifier::NetworkHandle network); |
| |
| // Finds an alternative to |old_network| from the platform's list of connected |
| // networks. Returns NetworkChangeNotifier::kInvalidNetworkHandle if no |
| // alternative is found. |
| NetworkChangeNotifier::NetworkHandle FindAlternateNetwork( |
| NetworkChangeNotifier::NetworkHandle old_network); |
| |
| // Method that initiates migration of active sessions to |new_network|. |
| // If |new_network| is a valid network, sessions that can migrate are |
| // migrated to |new_network|, and sessions not bound to |new_network| |
| // are left unchanged. Sessions with non-migratable streams are closed |
| // if |close_if_cannot_migrate| is true, and continue using their current |
| // network otherwise. |
| // |
| // If |new_network| is NetworkChangeNotifier::kInvalidNetworkHandle, |
| // there is no new network to migrate sessions onto, and all sessions are |
| // closed. |
| void MaybeMigrateOrCloseSessions( |
| NetworkChangeNotifier::NetworkHandle new_network, |
| bool close_if_cannot_migrate, |
| const NetLogWithSource& net_log); |
| |
| // Method that initiates migration of |session| if |session| is |
| // active and if there is an alternate network than the one to which |
| // |session| is currently bound. |
| MigrationResult MaybeMigrateSingleSession(QuicChromiumClientSession* session, |
| MigrationCause migration_cause); |
| |
| // Migrates |session| over to using |network|. If |network| is |
| // kInvalidNetworkHandle, default network is used. |
| MigrationResult MigrateSessionToNewNetwork( |
| QuicChromiumClientSession* session, |
| NetworkChangeNotifier::NetworkHandle network, |
| bool close_session_on_error, |
| const NetLogWithSource& net_log); |
| |
| // Migrates |session| over to using |peer_address|. Causes a PING frame |
| // to be sent to the new peer address. |
| void MigrateSessionToNewPeerAddress(QuicChromiumClientSession* session, |
| IPEndPoint peer_address, |
| const NetLogWithSource& net_log); |
| |
| // NetworkChangeNotifier::IPAddressObserver methods: |
| |
| // Until the servers support roaming, close all connections when the local |
| // IP address changes. |
| void OnIPAddressChanged() override; |
| |
| // NetworkChangeNotifier::NetworkObserver methods: |
| void OnNetworkConnected( |
| NetworkChangeNotifier::NetworkHandle network) override; |
| void OnNetworkDisconnected( |
| NetworkChangeNotifier::NetworkHandle network) override; |
| void OnNetworkSoonToDisconnect( |
| NetworkChangeNotifier::NetworkHandle network) override; |
| void OnNetworkMadeDefault( |
| NetworkChangeNotifier::NetworkHandle network) override; |
| |
| // SSLConfigService::Observer methods: |
| |
| // We perform the same flushing as described above when SSL settings change. |
| void OnSSLConfigChanged() override; |
| |
| // CertDatabase::Observer methods: |
| |
| // We close all sessions when certificate database is changed. |
| void OnCertDBChanged(const X509Certificate* cert) override; |
| |
| bool require_confirmation() const { return require_confirmation_; } |
| |
| void set_require_confirmation(bool require_confirmation); |
| |
| bool ZeroRTTEnabledFor(const QuicServerId& server_id); |
| |
| // It returns the amount of time waiting job should be delayed. |
| base::TimeDelta GetTimeDelayForWaitingJob(const QuicServerId& server_id); |
| |
| QuicChromiumConnectionHelper* helper() { return helper_.get(); } |
| |
| QuicChromiumAlarmFactory* alarm_factory() { return alarm_factory_.get(); } |
| |
| bool enable_port_selection() const { return enable_port_selection_; } |
| |
| bool has_quic_server_info_factory() { |
| return quic_server_info_factory_.get() != nullptr; |
| } |
| |
| void set_quic_server_info_factory( |
| QuicServerInfoFactory* quic_server_info_factory); |
| |
| bool enable_connection_racing() const { return enable_connection_racing_; } |
| void set_enable_connection_racing(bool enable_connection_racing) { |
| enable_connection_racing_ = enable_connection_racing; |
| } |
| |
| int socket_receive_buffer_size() const { return socket_receive_buffer_size_; } |
| |
| bool delay_tcp_race() const { return delay_tcp_race_; } |
| |
| bool migrate_sessions_on_network_change() const { |
| return migrate_sessions_on_network_change_; |
| } |
| |
| private: |
| class Job; |
| class CertVerifierJob; |
| friend class test::QuicStreamFactoryPeer; |
| |
| typedef std::map<QuicServerId, QuicChromiumClientSession*> SessionMap; |
| typedef std::map<QuicChromiumClientSession*, QuicSessionKey> SessionIdMap; |
| typedef std::set<QuicSessionKey> AliasSet; |
| typedef std::map<QuicChromiumClientSession*, AliasSet> SessionAliasMap; |
| typedef std::set<QuicChromiumClientSession*> SessionSet; |
| typedef std::map<IPEndPoint, SessionSet> IPAliasMap; |
| typedef std::map<QuicChromiumClientSession*, IPEndPoint> SessionPeerIPMap; |
| typedef std::set<Job*> JobSet; |
| typedef std::map<QuicServerId, JobSet> JobMap; |
| typedef std::map<QuicStreamRequest*, QuicServerId> RequestMap; |
| typedef std::set<QuicStreamRequest*> RequestSet; |
| typedef std::map<QuicServerId, RequestSet> ServerIDRequestsMap; |
| typedef std::map<QuicServerId, std::unique_ptr<CertVerifierJob>> |
| CertVerifierJobMap; |
| |
| enum FactoryStatus { |
| OPEN, // New streams may be created. |
| CLOSED, // No new streams may be created temporarily. |
| DISABLED // No more streams may be created until the network changes. |
| }; |
| |
| // Creates a job which doesn't wait for server config to be loaded from the |
| // disk cache. This job is started via a PostTask. |
| void CreateAuxilaryJob(const QuicSessionKey& key, |
| int cert_verify_flags, |
| const NetLogWithSource& net_log); |
| |
| // Returns a newly created QuicHttpStream owned by the caller. |
| std::unique_ptr<QuicHttpStream> CreateFromSession( |
| QuicChromiumClientSession* session); |
| |
| bool OnResolution(const QuicSessionKey& key, const AddressList& address_list); |
| void OnJobComplete(Job* job, int rv); |
| void OnCertVerifyJobComplete(CertVerifierJob* job, int rv); |
| bool HasActiveSession(const QuicServerId& server_id) const; |
| bool HasActiveJob(const QuicServerId& server_id) const; |
| bool HasActiveCertVerifierJob(const QuicServerId& server_id) const; |
| int CreateSession(const QuicSessionKey& key, |
| int cert_verify_flags, |
| std::unique_ptr<QuicServerInfo> quic_server_info, |
| const AddressList& address_list, |
| base::TimeTicks dns_resolution_start_time, |
| base::TimeTicks dns_resolution_end_time, |
| const NetLogWithSource& net_log, |
| QuicChromiumClientSession** session); |
| void ActivateSession(const QuicSessionKey& key, |
| QuicChromiumClientSession* session); |
| |
| // Returns |srtt| in micro seconds from ServerNetworkStats. Returns 0 if there |
| // is no |http_server_properties_| or if |http_server_properties_| doesn't |
| // have ServerNetworkStats for the given |server_id|. |
| int64_t GetServerNetworkStatsSmoothedRttInMicroseconds( |
| const QuicServerId& server_id) const; |
| |
| // Helper methods. |
| bool WasQuicRecentlyBroken(const QuicServerId& server_id) const; |
| |
| bool CryptoConfigCacheIsEmpty(const QuicServerId& server_id); |
| |
| // Starts an asynchronous job for cert verification if |
| // |race_cert_verification_| is enabled and if there are cached certs for the |
| // given |server_id|. |
| QuicAsyncStatus StartCertVerifyJob(const QuicServerId& server_id, |
| int cert_verify_flags, |
| const NetLogWithSource& net_log); |
| |
| // Initializes the cached state associated with |server_id| in |
| // |crypto_config_| with the information in |server_info|. Populates |
| // |connection_id| with the next server designated connection id, |
| // if any, and otherwise leaves it unchanged. |
| void InitializeCachedStateInCryptoConfig( |
| const QuicServerId& server_id, |
| const std::unique_ptr<QuicServerInfo>& server_info, |
| QuicConnectionId* connection_id); |
| |
| // Initialize |quic_supported_servers_at_startup_| with the list of servers |
| // that supported QUIC at start up and also initialize in-memory cache of |
| // QuicServerInfo objects from HttpServerProperties. |
| void MaybeInitialize(); |
| |
| void ProcessGoingAwaySession(QuicChromiumClientSession* session, |
| const QuicServerId& server_id, |
| bool was_session_active); |
| |
| // Internal method that migrates |session| over to using |
| // |peer_address| and |network|. If |network| is |
| // kInvalidNetworkHandle, default network is used. If the migration |
| // fails and |close_session_on_error| is true, connection is closed. |
| MigrationResult MigrateSessionInner( |
| QuicChromiumClientSession* session, |
| IPEndPoint peer_address, |
| NetworkChangeNotifier::NetworkHandle network, |
| bool close_session_on_error, |
| const NetLogWithSource& net_log); |
| |
| // Called to re-enable QUIC when QUIC has been disabled. |
| void OpenFactory(); |
| // If QUIC has been working well after having been recently |
| // disabled, clear the |consecutive_disabled_count_|. |
| void MaybeClearConsecutiveDisabledCount(); |
| |
| bool require_confirmation_; |
| NetLog* net_log_; |
| HostResolver* host_resolver_; |
| ClientSocketFactory* client_socket_factory_; |
| HttpServerProperties* http_server_properties_; |
| TransportSecurityState* transport_security_state_; |
| CTVerifier* cert_transparency_verifier_; |
| std::unique_ptr<QuicServerInfoFactory> quic_server_info_factory_; |
| QuicCryptoClientStreamFactory* quic_crypto_client_stream_factory_; |
| QuicRandom* random_generator_; |
| std::unique_ptr<QuicClock> clock_; |
| const size_t max_packet_length_; |
| |
| // Factory which is used to create socket performance watcher. A new watcher |
| // is created for every QUIC connection. |
| // |socket_performance_watcher_factory_| may be null. |
| SocketPerformanceWatcherFactory* socket_performance_watcher_factory_; |
| |
| // The helper used for all connections. |
| std::unique_ptr<QuicChromiumConnectionHelper> helper_; |
| |
| // The alarm factory used for all connections. |
| std::unique_ptr<QuicChromiumAlarmFactory> alarm_factory_; |
| |
| // Contains owning pointers to all sessions that currently exist. |
| SessionIdMap all_sessions_; |
| // Contains non-owning pointers to currently active session |
| // (not going away session, once they're implemented). |
| SessionMap active_sessions_; |
| // Map from session to set of aliases that this session is known by. |
| SessionAliasMap session_aliases_; |
| // Map from IP address to sessions which are connected to this address. |
| IPAliasMap ip_aliases_; |
| // Map from session to its original peer IP address. |
| SessionPeerIPMap session_peer_ip_; |
| |
| // Origins which have gone away recently. |
| AliasSet gone_away_aliases_; |
| |
| const QuicConfig config_; |
| QuicCryptoClientConfig crypto_config_; |
| |
| JobMap active_jobs_; |
| ServerIDRequestsMap job_requests_map_; |
| RequestMap active_requests_; |
| |
| CertVerifierJobMap active_cert_verifier_jobs_; |
| |
| QuicVersionVector supported_versions_; |
| |
| // Determine if we should consistently select a client UDP port. If false, |
| // then we will just let the OS select a random client port for each new |
| // connection. |
| bool enable_port_selection_; |
| |
| // Set if we always require handshake confirmation. If true, this will |
| // introduce at least one RTT for the handshake before the client sends data. |
| bool always_require_handshake_confirmation_; |
| |
| // Set if we do not want connection pooling. |
| bool disable_connection_pooling_; |
| |
| // Specifies the ratio between time to load QUIC server information from disk |
| // cache to 'smoothed RTT'. This ratio is used to calculate the timeout in |
| // milliseconds to wait for loading of QUIC server information. If we don't |
| // want to timeout, set |load_server_info_timeout_srtt_multiplier_| to 0. |
| float load_server_info_timeout_srtt_multiplier_; |
| |
| // Set if we want to race connections - one connection that sends |
| // INCHOATE_HELLO and another connection that sends CHLO after loading server |
| // config from the disk cache. |
| bool enable_connection_racing_; |
| |
| // Set if experimental non-blocking IO should be used on windows sockets. |
| bool enable_non_blocking_io_; |
| |
| // Set if we do not want to load server config from the disk cache. |
| bool disable_disk_cache_; |
| |
| // Set if AES-GCM should be preferred, even if there is no hardware support. |
| bool prefer_aes_; |
| |
| // True if QUIC should be disabled when there are timeouts with open |
| // streams. |
| bool disable_quic_on_timeout_with_open_streams_; |
| |
| // Number of times in a row that QUIC has been disabled. |
| int consecutive_disabled_count_; |
| bool need_to_evaluate_consecutive_disabled_count_; |
| |
| // Size of the UDP receive buffer. |
| int socket_receive_buffer_size_; |
| |
| // Set if we do want to delay TCP connection when it is racing with QUIC. |
| bool delay_tcp_race_; |
| |
| // PING timeout for connections. |
| QuicTime::Delta ping_timeout_; |
| QuicTime::Delta reduced_ping_timeout_; |
| |
| // If more than |yield_after_packets_| packets have been read or more than |
| // |yield_after_duration_| time has passed, then |
| // QuicChromiumPacketReader::StartReading() yields by doing a PostTask(). |
| int yield_after_packets_; |
| QuicTime::Delta yield_after_duration_; |
| |
| // Set if all sessions should be closed when any local IP address changes. |
| const bool close_sessions_on_ip_change_; |
| |
| // Set if migration should be attempted on active sessions when primary |
| // interface changes. |
| const bool migrate_sessions_on_network_change_; |
| |
| // Set if early migration should be attempted when the connection |
| // experiences poor connectivity. |
| const bool migrate_sessions_early_; |
| |
| // If set, allows migration of connection to server-specified alternate |
| // server address. |
| const bool allow_server_migration_; |
| |
| // If set, force HOL blocking. For measurement purposes. |
| const bool force_hol_blocking_; |
| |
| // Set if cert verification is to be raced with host resolution. |
| bool race_cert_verification_; |
| |
| // If set, configure QUIC sockets to not fragment packets. |
| bool quic_do_not_fragment_; |
| |
| // Each profile will (probably) have a unique port_seed_ value. This value |
| // is used to help seed a pseudo-random number generator (PortSuggester) so |
| // that we consistently (within this profile) suggest the same ephemeral |
| // port when we re-connect to any given server/port. The differences between |
| // profiles (probablistically) prevent two profiles from colliding in their |
| // ephemeral port requests. |
| uint64_t port_seed_; |
| |
| // Local address of socket that was created in CreateSession. |
| IPEndPoint local_address_; |
| bool check_persisted_supports_quic_; |
| bool has_initialized_data_; |
| std::set<HostPortPair> quic_supported_servers_at_startup_; |
| |
| NetworkConnection network_connection_; |
| |
| int num_push_streams_created_; |
| |
| QuicClientPushPromiseIndex push_promise_index_; |
| |
| // Current status of the factory's ability to create streams. |
| FactoryStatus status_; |
| |
| base::TaskRunner* task_runner_; |
| |
| const scoped_refptr<SSLConfigService> ssl_config_service_; |
| |
| base::WeakPtrFactory<QuicStreamFactory> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(QuicStreamFactory); |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_QUIC_QUIC_STREAM_FACTORY_H_ |