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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 #include "net/quic/core/quic_connection.h" | 5 #include "net/quic/core/quic_connection.h" |
6 | 6 |
7 #include <string.h> | 7 #include <string.h> |
8 #include <sys/types.h> | 8 #include <sys/types.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
11 #include <iterator> | 11 #include <iterator> |
12 #include <limits> | 12 #include <limits> |
13 #include <memory> | 13 #include <memory> |
14 #include <set> | 14 #include <set> |
15 #include <utility> | 15 #include <utility> |
16 | 16 |
17 #include "base/format_macros.h" | 17 #include "base/format_macros.h" |
18 #include "base/macros.h" | 18 #include "base/macros.h" |
19 #include "base/metrics/histogram_macros.h" | 19 #include "base/metrics/histogram_macros.h" |
20 #include "net/base/net_errors.h" | 20 #include "net/base/net_errors.h" |
21 #include "net/quic/core/crypto/crypto_protocol.h" | 21 #include "net/quic/core/crypto/crypto_protocol.h" |
22 #include "net/quic/core/crypto/quic_decrypter.h" | 22 #include "net/quic/core/crypto/quic_decrypter.h" |
23 #include "net/quic/core/crypto/quic_encrypter.h" | 23 #include "net/quic/core/crypto/quic_encrypter.h" |
24 #include "net/quic/core/proto/cached_network_parameters.pb.h" | 24 #include "net/quic/core/proto/cached_network_parameters.pb.h" |
25 #include "net/quic/core/quic_bandwidth.h" | 25 #include "net/quic/core/quic_bandwidth.h" |
26 #include "net/quic/core/quic_config.h" | 26 #include "net/quic/core/quic_config.h" |
27 #include "net/quic/core/quic_flags.h" | |
28 #include "net/quic/core/quic_packet_generator.h" | 27 #include "net/quic/core/quic_packet_generator.h" |
29 #include "net/quic/core/quic_pending_retransmission.h" | 28 #include "net/quic/core/quic_pending_retransmission.h" |
30 #include "net/quic/core/quic_utils.h" | 29 #include "net/quic/core/quic_utils.h" |
31 #include "net/quic/platform/api/quic_bug_tracker.h" | 30 #include "net/quic/platform/api/quic_bug_tracker.h" |
32 #include "net/quic/platform/api/quic_flag_utils.h" | 31 #include "net/quic/platform/api/quic_flag_utils.h" |
| 32 #include "net/quic/platform/api/quic_flags.h" |
33 #include "net/quic/platform/api/quic_logging.h" | 33 #include "net/quic/platform/api/quic_logging.h" |
34 #include "net/quic/platform/api/quic_map_util.h" | 34 #include "net/quic/platform/api/quic_map_util.h" |
35 #include "net/quic/platform/api/quic_str_cat.h" | 35 #include "net/quic/platform/api/quic_str_cat.h" |
36 #include "net/quic/platform/api/quic_text_utils.h" | 36 #include "net/quic/platform/api/quic_text_utils.h" |
37 | 37 |
38 using std::string; | 38 using std::string; |
39 | 39 |
40 namespace net { | 40 namespace net { |
41 | 41 |
42 class QuicDecrypter; | 42 class QuicDecrypter; |
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233 ping_alarm_( | 233 ping_alarm_( |
234 alarm_factory_->CreateAlarm(arena_.New<PingAlarmDelegate>(this), | 234 alarm_factory_->CreateAlarm(arena_.New<PingAlarmDelegate>(this), |
235 &arena_)), | 235 &arena_)), |
236 mtu_discovery_alarm_(alarm_factory_->CreateAlarm( | 236 mtu_discovery_alarm_(alarm_factory_->CreateAlarm( |
237 arena_.New<MtuDiscoveryAlarmDelegate>(this), | 237 arena_.New<MtuDiscoveryAlarmDelegate>(this), |
238 &arena_)), | 238 &arena_)), |
239 visitor_(nullptr), | 239 visitor_(nullptr), |
240 debug_visitor_(nullptr), | 240 debug_visitor_(nullptr), |
241 packet_generator_(connection_id_, | 241 packet_generator_(connection_id_, |
242 &framer_, | 242 &framer_, |
| 243 random_generator_, |
243 helper->GetBufferAllocator(), | 244 helper->GetBufferAllocator(), |
244 this), | 245 this), |
245 idle_network_timeout_(QuicTime::Delta::Infinite()), | 246 idle_network_timeout_(QuicTime::Delta::Infinite()), |
246 handshake_timeout_(QuicTime::Delta::Infinite()), | 247 handshake_timeout_(QuicTime::Delta::Infinite()), |
247 time_of_last_received_packet_(clock_->ApproximateNow()), | 248 time_of_last_received_packet_(clock_->ApproximateNow()), |
248 time_of_last_sent_new_packet_(clock_->ApproximateNow()), | 249 time_of_last_sent_new_packet_(clock_->ApproximateNow()), |
249 last_send_for_timeout_(clock_->ApproximateNow()), | 250 last_send_for_timeout_(clock_->ApproximateNow()), |
250 sent_packet_manager_(perspective, clock_, &stats_, kCubicBytes, kNack), | 251 sent_packet_manager_(perspective, clock_, &stats_, kCubicBytes, kNack), |
251 version_negotiation_state_(START_NEGOTIATION), | 252 version_negotiation_state_(START_NEGOTIATION), |
252 perspective_(perspective), | 253 perspective_(perspective), |
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1050 return; | 1051 return; |
1051 } | 1052 } |
1052 | 1053 |
1053 pending_version_negotiation_packet_ = false; | 1054 pending_version_negotiation_packet_ = false; |
1054 } | 1055 } |
1055 | 1056 |
1056 QuicConsumedData QuicConnection::SendStreamData( | 1057 QuicConsumedData QuicConnection::SendStreamData( |
1057 QuicStreamId id, | 1058 QuicStreamId id, |
1058 QuicIOVector iov, | 1059 QuicIOVector iov, |
1059 QuicStreamOffset offset, | 1060 QuicStreamOffset offset, |
1060 bool fin, | 1061 StreamSendingState state, |
1061 QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener) { | 1062 QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener) { |
1062 if (!fin && iov.total_length == 0) { | 1063 if (state == NO_FIN && iov.total_length == 0) { |
1063 QUIC_BUG << "Attempt to send empty stream frame"; | 1064 QUIC_BUG << "Attempt to send empty stream frame"; |
1064 return QuicConsumedData(0, false); | 1065 return QuicConsumedData(0, false); |
1065 } | 1066 } |
1066 | 1067 |
1067 // Opportunistically bundle an ack with every outgoing packet. | 1068 // Opportunistically bundle an ack with every outgoing packet. |
1068 // Particularly, we want to bundle with handshake packets since we don't know | 1069 // Particularly, we want to bundle with handshake packets since we don't know |
1069 // which decrypter will be used on an ack packet following a handshake | 1070 // which decrypter will be used on an ack packet following a handshake |
1070 // packet (a handshake packet from client to server could result in a REJ or a | 1071 // packet (a handshake packet from client to server could result in a REJ or a |
1071 // SHLO from the server, leading to two different decrypters at the server.) | 1072 // SHLO from the server, leading to two different decrypters at the server.) |
1072 ScopedRetransmissionScheduler alarm_delayer(this); | 1073 ScopedRetransmissionScheduler alarm_delayer(this); |
1073 ScopedPacketBundler ack_bundler(this, SEND_ACK_IF_PENDING); | 1074 ScopedPacketBundler ack_bundler(this, SEND_ACK_IF_PENDING); |
1074 // The optimized path may be used for data only packets which fit into a | 1075 // The optimized path may be used for data only packets which fit into a |
1075 // standard buffer and don't need padding. | 1076 // standard buffer and don't need padding. |
1076 if (id != kCryptoStreamId && !packet_generator_.HasQueuedFrames() && | 1077 if (id != kCryptoStreamId && !packet_generator_.HasQueuedFrames() && |
1077 iov.total_length > kMaxPacketSize) { | 1078 iov.total_length > kMaxPacketSize && state != FIN_AND_PADDING) { |
1078 // Use the fast path to send full data packets. | 1079 // Use the fast path to send full data packets. |
1079 return packet_generator_.ConsumeDataFastPath(id, iov, offset, fin, | 1080 return packet_generator_.ConsumeDataFastPath( |
1080 std::move(ack_listener)); | 1081 id, iov, offset, state != NO_FIN, std::move(ack_listener)); |
1081 } | 1082 } |
1082 return packet_generator_.ConsumeData(id, iov, offset, fin, | 1083 return packet_generator_.ConsumeData(id, iov, offset, state, |
1083 std::move(ack_listener)); | 1084 std::move(ack_listener)); |
1084 } | 1085 } |
1085 | 1086 |
1086 void QuicConnection::SendRstStream(QuicStreamId id, | 1087 void QuicConnection::SendRstStream(QuicStreamId id, |
1087 QuicRstStreamErrorCode error, | 1088 QuicRstStreamErrorCode error, |
1088 QuicStreamOffset bytes_written) { | 1089 QuicStreamOffset bytes_written) { |
1089 // Opportunistically bundle an ack with this outgoing packet. | 1090 // Opportunistically bundle an ack with this outgoing packet. |
1090 ScopedPacketBundler ack_bundler(this, SEND_ACK_IF_PENDING); | 1091 ScopedPacketBundler ack_bundler(this, SEND_ACK_IF_PENDING); |
1091 packet_generator_.AddControlFrame( | 1092 packet_generator_.AddControlFrame( |
1092 QuicFrame(new QuicRstStreamFrame(id, error, bytes_written))); | 1093 QuicFrame(new QuicRstStreamFrame(id, error, bytes_written))); |
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2387 | 2388 |
2388 void QuicConnection::CheckIfApplicationLimited() { | 2389 void QuicConnection::CheckIfApplicationLimited() { |
2389 if (queued_packets_.empty() && | 2390 if (queued_packets_.empty() && |
2390 !sent_packet_manager_.HasPendingRetransmissions() && | 2391 !sent_packet_manager_.HasPendingRetransmissions() && |
2391 !visitor_->WillingAndAbleToWrite()) { | 2392 !visitor_->WillingAndAbleToWrite()) { |
2392 sent_packet_manager_.OnApplicationLimited(); | 2393 sent_packet_manager_.OnApplicationLimited(); |
2393 } | 2394 } |
2394 } | 2395 } |
2395 | 2396 |
2396 } // namespace net | 2397 } // namespace net |
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