Land Recent QUIC Changes.

net/quic/quic_sent_packet_manager.h

 // Copyright 2013 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_H_
 #define NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 34 matching lines @@
   // 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 OnSpuriousPacketRetransmition(
         TransmissionType transmission_type,
         QuicByteCount byte_size) {}
+
+    virtual void OnSentPacket(
+        QuicPacketSequenceNumber sequence_number,
+        QuicTime sent_time,
+        QuicByteCount bytes) {}
+
+    virtual void OnRetransmittedPacket(
+        QuicPacketSequenceNumber old_sequence_number,
+        QuicPacketSequenceNumber new_sequence_number,
+        TransmissionType transmission_type,
+        QuicTime time) {}
+
+    virtual void OnIncomingAck(
+        const ReceivedPacketInfo& received_info,
+        QuicTime ack_receive_time,
+        QuicPacketSequenceNumber largest_observed,
+        bool largest_observed_acked,
+        QuicPacketSequenceNumber least_unacked_sent_packet) {}
   };
 
   // Struct to store the pending retransmission information.
   struct PendingRetransmission {
     PendingRetransmission(QuicPacketSequenceNumber sequence_number,
                           TransmissionType transmission_type,
                           const RetransmittableFrames& retransmittable_frames,
                           QuicSequenceNumberLength sequence_number_length)
             : sequence_number(sequence_number),
               transmission_type(transmission_type),
@@ skipping 101 matching lines @@
   QuicBandwidth BandwidthEstimate() const;
 
   // Returns true if the current bandwidth estimate is reliable.
   bool HasReliableBandwidthEstimate() const;
 
   // Returns the size of the current congestion window in bytes.  Note, this is
   // not the *available* window.  Some send algorithms may not use a congestion
   // window and will return 0.
   QuicByteCount GetCongestionWindow() const;
 
+  // Returns the size of the slow start congestion window in bytes,
+  // aka ssthresh.  Some send algorithms do not define a slow start
+  // threshold and will return 0.
+  QuicByteCount GetSlowStartThreshold() const;
+
   // Enables pacing if it has not already been enabled, and if
   // FLAGS_enable_quic_pacing is set.
   void MaybeEnablePacing();
 
   bool using_pacing() const { return using_pacing_; }
 
   void set_debug_delegate(DebugDelegate* debug_delegate) {
     debug_delegate_ = debug_delegate;
   }
 
@@ skipping 133 matching lines @@
   // Sets of packets acked and lost as a result of the last congestion event.
   SendAlgorithmInterface::CongestionMap packets_acked_;
   SendAlgorithmInterface::CongestionMap packets_lost_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSentPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_