Move shared files in net/quic/ into net/quic/core/

net/quic/quic_sent_packet_manager_interface.h

-// Copyright 2016 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_SENT_PACKET_MANAGER_INTERFACE_H_
-#define NET_QUIC_QUIC_SENT_PACKET_MANAGER_INTERFACE_H_
-
-#include "base/macros.h"
-#include "net/quic/quic_protocol.h"
-#include "net/quic/quic_sustained_bandwidth_recorder.h"
-
-namespace net {
-
-class QuicConfig;
-class RttStats;
-
-class NET_EXPORT_PRIVATE QuicSentPacketManagerInterface {
- public:
-  // Interface which gets callbacks from the QuicSentPacketManager at
-  // interesting points.  Implementations must not mutate the state of
-  // the packet manager or connection as a result of these callbacks.
-  class NET_EXPORT_PRIVATE DebugDelegate {
-   public:
-    virtual ~DebugDelegate() {}
-
-    // Called when a spurious retransmission is detected.
-    virtual void OnSpuriousPacketRetransmission(
-        TransmissionType transmission_type,
-        QuicByteCount byte_size) {}
-
-    virtual void OnIncomingAck(const QuicAckFrame& ack_frame,
-                               QuicTime ack_receive_time,
-                               QuicPacketNumber largest_observed,
-                               bool rtt_updated,
-                               QuicPacketNumber least_unacked_sent_packet) {}
-
-    virtual void OnPacketLoss(QuicPacketNumber lost_packet_number,
-                              TransmissionType transmission_type,
-                              QuicTime detection_time) {}
-  };
-
-  // Interface which gets callbacks from the QuicSentPacketManager when
-  // network-related state changes. Implementations must not mutate the
-  // state of the packet manager as a result of these callbacks.
-  class NET_EXPORT_PRIVATE NetworkChangeVisitor {
-   public:
-    virtual ~NetworkChangeVisitor() {}
-
-    // Called when congestion window or RTT may have changed.
-    virtual void OnCongestionChange() = 0;
-
-    // Called with the path may be degrading. Note that the path may only be
-    // temporarily degrading.
-    // TODO(jri): With multipath, this method should probably have a path_id
-    // parameter, and should maybe result in the path being marked as inactive.
-    virtual void OnPathDegrading() = 0;
-
-    // Called when the Path MTU may have increased.
-    virtual void OnPathMtuIncreased(QuicPacketLength packet_size) = 0;
-  };
-
-  virtual ~QuicSentPacketManagerInterface() {}
-
-  virtual void SetFromConfig(const QuicConfig& config) = 0;
-
-  // Resumes connection state on the default path.
-  virtual void ResumeConnectionState(
-      const CachedNetworkParameters& cached_network_params,
-      bool max_bandwidth_resumption) = 0;
-
-  // Sets number of active streams of all paths.
-  virtual void SetNumOpenStreams(size_t num_streams) = 0;
-
-  // Sets max pacing rate of the default path.
-  virtual void SetMaxPacingRate(QuicBandwidth max_pacing_rate) = 0;
-
-  // Indicates the handshake has completed, so no handshake packets need to be
-  // retransmitted.
-  virtual void SetHandshakeConfirmed() = 0;
-
-  virtual void OnIncomingAck(const QuicAckFrame& ack_frame,
-                             QuicTime ack_receive_time) = 0;
-
-  // Requests retransmission of all unacked packets of |retransmission_type| on
-  // the default path.
-  virtual void RetransmitUnackedPackets(
-      TransmissionType retransmission_type) = 0;
-
-  // Retransmits the oldest pending packet on the path (on which retransmission
-  // alarm fires) if there is still a tail loss probe pending. Invoked after
-  // OnRetransmissionTimeout.
-  virtual bool MaybeRetransmitTailLossProbe() = 0;
-
-  // Removes the retransmittable frames from all unencrypted packets on the
-  // default path to ensure they don't get retransmitted.
-  virtual void NeuterUnencryptedPackets() = 0;
-
-  virtual bool HasPendingRetransmissions() const = 0;
-
-  virtual PendingRetransmission NextPendingRetransmission() = 0;
-
-  // Returns true if the default path has unacked packets.
-  virtual bool HasUnackedPackets() const = 0;
-
-  virtual QuicPacketNumber GetLeastUnacked(QuicPathId path_id) const = 0;
-
-  virtual bool OnPacketSent(
-      SerializedPacket* serialized_packet,
-      QuicPathId original_path_id,
-      QuicPacketNumber original_packet_number,
-      QuicTime sent_time,
-      TransmissionType transmission_type,
-      HasRetransmittableData has_retransmittable_data) = 0;
-
-  virtual void OnRetransmissionTimeout() = 0;
-
-  // Returns the earliest time we can send the next packet. Sets |path_id| to be
-  // the path on which the next packet will be sent.
-  virtual QuicTime::Delta TimeUntilSend(QuicTime now,
-                                        HasRetransmittableData retransmittable,
-                                        QuicPathId* path_id) = 0;
-
-  // Returns the earliest retransmission time of all paths.
-  // TODO(fayang): This method should not be const becasue the return value
-  // depends upon the time it is invoked.
-  virtual const QuicTime GetRetransmissionTime() const = 0;
-
-  // Returns the rtt stats of the default path.
-  virtual const RttStats* GetRttStats() const = 0;
-
-  // Returns the estimated bandwidth on default path calculated by the
-  // congestion algorithm.
-  virtual QuicBandwidth BandwidthEstimate() const = 0;
-
-  // Returns the sustained bandwidth recorder on the default path.
-  virtual const QuicSustainedBandwidthRecorder* SustainedBandwidthRecorder()
-      const = 0;
-
-  // Returns the size of the current congestion window on default path in number
-  // of kDefaultTCPMSS-sized segments.
-  virtual QuicPacketCount GetCongestionWindowInTcpMss() const = 0;
-
-  // Determines the number of packets of length |max_packet_length| which fit in
-  // the congestion windows for all paths, and returns the max number of packets
-  // across all paths.
-  virtual QuicPacketCount EstimateMaxPacketsInFlight(
-      QuicByteCount max_packet_length) const = 0;
-
-  // Returns the size of the current congestion window size on the default path
-  // in bytes.
-  virtual QuicByteCount GetCongestionWindowInBytes() const = 0;
-
-  // Returns the size of the slow start congestion window in number of 1460 byte
-  // TCP segments on the default path.
-  virtual QuicPacketCount GetSlowStartThresholdInTcpMss() const = 0;
-
-  // No longer retransmit data for |stream_id| on all paths.
-  virtual void CancelRetransmissionsForStream(QuicStreamId stream_id) = 0;
-
-  // Called when peer address changes and the connection migrates on |path_id|.
-  // TODO(fayang): Name of this method is confusing in multipath world because
-  // this migration is path level. Need to rename this as OnPeerMigration.
-  virtual void OnConnectionMigration(QuicPathId path_id,
-                                     PeerAddressChangeType type) = 0;
-
-  virtual bool IsHandshakeConfirmed() const = 0;
-
-  virtual void SetDebugDelegate(DebugDelegate* debug_delegate) = 0;
-
-  virtual QuicPacketNumber GetLargestObserved(QuicPathId path_id) const = 0;
-
-  virtual QuicPacketNumber GetLargestSentPacket(QuicPathId path_id) const = 0;
-
-  virtual QuicPacketNumber GetLeastPacketAwaitedByPeer(
-      QuicPathId path_id) const = 0;
-
-  virtual void SetNetworkChangeVisitor(NetworkChangeVisitor* visitor) = 0;
-
-  // Returns true if the default path is in slow start.
-  virtual bool InSlowStart() const = 0;
-
-  // These two methods return the consecutive RTO or TLP count of the default
-  // path.
-  virtual size_t GetConsecutiveRtoCount() const = 0;
-  virtual size_t GetConsecutiveTlpCount() const = 0;
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_SENT_PACKET_MANAGER_INTERFACE_H_