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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_QUIC_SENT_PACKET_MANAGER_H_ | 5 #ifndef NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_ |
6 #define NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_ | 6 #define NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <set> | 9 #include <set> |
10 #include <utility> | 10 #include <utility> |
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283 | 283 |
284 // Process the incoming ack looking for newly ack'd data packets. | 284 // Process the incoming ack looking for newly ack'd data packets. |
285 void HandleAckForSentPackets(const QuicAckFrame& ack_frame); | 285 void HandleAckForSentPackets(const QuicAckFrame& ack_frame); |
286 | 286 |
287 // Returns the current retransmission mode. | 287 // Returns the current retransmission mode. |
288 RetransmissionTimeoutMode GetRetransmissionMode() const; | 288 RetransmissionTimeoutMode GetRetransmissionMode() const; |
289 | 289 |
290 // Retransmits all crypto stream packets. | 290 // Retransmits all crypto stream packets. |
291 void RetransmitCryptoPackets(); | 291 void RetransmitCryptoPackets(); |
292 | 292 |
| 293 // Retransmits two packets for an RTO and removes any non-retransmittable |
| 294 // packets from flight. |
| 295 void RetransmitRtoPackets(); |
| 296 |
293 // Retransmits all the packets and abandons by invoking a full RTO. | 297 // Retransmits all the packets and abandons by invoking a full RTO. |
294 void RetransmitAllPackets(); | 298 void RetransmitAllPackets(); |
295 | 299 |
296 // Returns the timer for retransmitting crypto handshake packets. | 300 // Returns the timer for retransmitting crypto handshake packets. |
297 const QuicTime::Delta GetCryptoRetransmissionDelay() const; | 301 const QuicTime::Delta GetCryptoRetransmissionDelay() const; |
298 | 302 |
299 // Returns the timer for a new tail loss probe. | 303 // Returns the timer for a new tail loss probe. |
300 const QuicTime::Delta GetTailLossProbeDelay() const; | 304 const QuicTime::Delta GetTailLossProbeDelay() const; |
301 | 305 |
302 // Returns the retransmission timeout, after which a full RTO occurs. | 306 // Returns the retransmission timeout, after which a full RTO occurs. |
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386 | 390 |
387 // Tracks the first RTO packet. If any packet before that packet gets acked, | 391 // Tracks the first RTO packet. If any packet before that packet gets acked, |
388 // it indicates the RTO was spurious and should be reversed(F-RTO). | 392 // it indicates the RTO was spurious and should be reversed(F-RTO). |
389 QuicPacketSequenceNumber first_rto_transmission_; | 393 QuicPacketSequenceNumber first_rto_transmission_; |
390 // Number of times the RTO timer has fired in a row without receiving an ack. | 394 // Number of times the RTO timer has fired in a row without receiving an ack. |
391 size_t consecutive_rto_count_; | 395 size_t consecutive_rto_count_; |
392 // Number of times the tail loss probe has been sent. | 396 // Number of times the tail loss probe has been sent. |
393 size_t consecutive_tlp_count_; | 397 size_t consecutive_tlp_count_; |
394 // Number of times the crypto handshake has been retransmitted. | 398 // Number of times the crypto handshake has been retransmitted. |
395 size_t consecutive_crypto_retransmission_count_; | 399 size_t consecutive_crypto_retransmission_count_; |
396 // Number of pending transmissions of TLP or crypto packets. | 400 // Number of pending transmissions of TLP, RTO, or crypto packets. |
397 size_t pending_timer_transmission_count_; | 401 size_t pending_timer_transmission_count_; |
398 // Maximum number of tail loss probes to send before firing an RTO. | 402 // Maximum number of tail loss probes to send before firing an RTO. |
399 size_t max_tail_loss_probes_; | 403 size_t max_tail_loss_probes_; |
400 bool using_pacing_; | 404 bool using_pacing_; |
401 | 405 |
402 // Vectors packets acked and lost as a result of the last congestion event. | 406 // Vectors packets acked and lost as a result of the last congestion event. |
403 SendAlgorithmInterface::CongestionVector packets_acked_; | 407 SendAlgorithmInterface::CongestionVector packets_acked_; |
404 SendAlgorithmInterface::CongestionVector packets_lost_; | 408 SendAlgorithmInterface::CongestionVector packets_lost_; |
405 | 409 |
406 // Set to true after the crypto handshake has successfully completed. After | 410 // Set to true after the crypto handshake has successfully completed. After |
407 // this is true we no longer use HANDSHAKE_MODE, and further frames sent on | 411 // this is true we no longer use HANDSHAKE_MODE, and further frames sent on |
408 // the crypto stream (i.e. SCUP messages) are treated like normal | 412 // the crypto stream (i.e. SCUP messages) are treated like normal |
409 // retransmittable frames. | 413 // retransmittable frames. |
410 bool handshake_confirmed_; | 414 bool handshake_confirmed_; |
411 | 415 |
412 // Records bandwidth from server to client in normal operation, over periods | 416 // Records bandwidth from server to client in normal operation, over periods |
413 // of time with no loss events. | 417 // of time with no loss events. |
414 QuicSustainedBandwidthRecorder sustained_bandwidth_recorder_; | 418 QuicSustainedBandwidthRecorder sustained_bandwidth_recorder_; |
415 | 419 |
416 DISALLOW_COPY_AND_ASSIGN(QuicSentPacketManager); | 420 DISALLOW_COPY_AND_ASSIGN(QuicSentPacketManager); |
417 }; | 421 }; |
418 | 422 |
419 } // namespace net | 423 } // namespace net |
420 | 424 |
421 #endif // NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_ | 425 #endif // NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_ |
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