Land Recent QUIC Changes.

net/quic/quic_packet_generator.h

 // 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.
 //
 // Responsible for generating packets on behalf of a QuicConnection.
 // Packets are serialized just-in-time.  Control frames are queued.
 // Ack and Feedback frames will be requested from the Connection
 // just-in-time.  When a packet needs to be sent, the Generator
 // will serialize a packet and pass it to QuicConnection::SendOrQueuePacket()
 //
@@ skipping 51 matching lines @@
 class NET_EXPORT_PRIVATE QuicPacketGenerator {
  public:
   class NET_EXPORT_PRIVATE DelegateInterface {
    public:
     virtual ~DelegateInterface() {}
     virtual bool ShouldGeneratePacket(TransmissionType transmission_type,
                                       HasRetransmittableData retransmittable,
                                       IsHandshake handshake) = 0;
     virtual QuicAckFrame* CreateAckFrame() = 0;
     virtual QuicCongestionFeedbackFrame* CreateFeedbackFrame() = 0;
+    virtual QuicStopWaitingFrame* CreateStopWaitingFrame() = 0;
     // Takes ownership of |packet.packet| and |packet.retransmittable_frames|.
     virtual bool OnSerializedPacket(const SerializedPacket& packet) = 0;
     virtual void CloseConnection(QuicErrorCode error, bool from_peer) = 0;
   };
 
   // Interface which gets callbacks from the QuicPacketGenerator at interesting
   // points.  Implementations must not mutate the state of the generator
   // as a result of these callbacks.
   class NET_EXPORT_PRIVATE DebugDelegateInterface {
    public:
     virtual ~DebugDelegateInterface() {}
 
     // Called when a frame has been added to the current packet.
     virtual void OnFrameAddedToPacket(const QuicFrame& frame) = 0;
   };
 
   QuicPacketGenerator(DelegateInterface* delegate,
                       DebugDelegateInterface* debug_delegate,
                       QuicPacketCreator* creator);
 
   virtual ~QuicPacketGenerator();
 
   // Indicates that an ACK frame should be sent.  If |also_send_feedback| is
   // true, then it also indicates a CONGESTION_FEEDBACK frame should be sent.
+  // If |also_send_stop_waiting| is true, then it also indicates that a
+  // STOP_WAITING frame should be sent as well.
   // The contents of the frame(s) will be generated via a call to the delegates
   // CreateAckFrame() and CreateFeedbackFrame() when the packet is serialized.
-  void SetShouldSendAck(bool also_send_feedback);
+  void SetShouldSendAck(bool also_send_feedback,
+                        bool also_send_stop_waiting);
+
+  // Indicates that a STOP_WAITING frame should be sent.
+  void SetShouldSendStopWaiting();
+
   void AddControlFrame(const QuicFrame& frame);
 
   // Given some data, may consume part or all of it and pass it to the
   // packet creator to be serialized into packets. If not in batch
   // mode, these packets will also be sent during this call. Also
   // attaches a QuicAckNotifier to any created stream frames, which
   // will be called once the frame is ACKed by the peer. The
   // QuicAckNotifier is owned by the QuicConnection. |notifier| may
   // be NULL.
   QuicConsumedData ConsumeData(QuicStreamId id,
@@ skipping 39 matching lines @@
 
   QuicPacketCreator* packet_creator_;
   QuicFrames queued_control_frames_;
 
   // True if batch mode is currently enabled.
   bool batch_mode_;
 
   // Flags to indicate the need for just-in-time construction of a frame.
   bool should_send_ack_;
   bool should_send_feedback_;
+  bool should_send_stop_waiting_;
   // If we put a non-retransmittable frame (namley ack or feedback frame) in
   // this packet, then we have to hold a reference to it until we flush (and
   // serialize it). Retransmittable frames are referenced elsewhere so that they
   // can later be (optionally) retransmitted.
   scoped_ptr<QuicAckFrame> pending_ack_frame_;
   scoped_ptr<QuicCongestionFeedbackFrame> pending_feedback_frame_;
+  scoped_ptr<QuicStopWaitingFrame> pending_stop_waiting_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicPacketGenerator);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PACKET_GENERATOR_H_