Allow the number of connections QUIC's send algorithms simulate to

net/quic/congestion_control/tcp_cubic_sender.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.
 //
 // TCP cubic send side congestion algorithm, emulates the behavior of
 // TCP cubic.
 
 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
 
@@ skipping 21 matching lines @@
   // Reno option and max_tcp_congestion_window are provided for testing.
   TcpCubicSender(const QuicClock* clock,
                  const RttStats* rtt_stats,
                  bool reno,
                  QuicTcpCongestionWindow max_tcp_congestion_window,
                  QuicConnectionStats* stats);
   virtual ~TcpCubicSender();
 
   // Start implementation of SendAlgorithmInterface.
   virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE;
+  virtual void SetNumEmulatedConnections(int num_connections) OVERRIDE;
   virtual void OnIncomingQuicCongestionFeedbackFrame(
       const QuicCongestionFeedbackFrame& feedback,
       QuicTime feedback_receive_time) OVERRIDE;
   virtual void OnCongestionEvent(bool rtt_updated,
                                  QuicByteCount bytes_in_flight,
                                  const CongestionVector& acked_packets,
                                  const CongestionVector& lost_packets) OVERRIDE;
   virtual bool OnPacketSent(QuicTime sent_time,
                             QuicByteCount bytes_in_flight,
                             QuicPacketSequenceNumber sequence_number,
@@ skipping 33 matching lines @@
   void PrrOnPacketLost(QuicByteCount bytes_in_flight);
   void PrrOnPacketAcked(QuicByteCount acked_bytes);
   QuicTime::Delta PrrTimeUntilSend(QuicByteCount bytes_in_flight) const;
 
 
   HybridSlowStart hybrid_slow_start_;
   Cubic cubic_;
   const RttStats* rtt_stats_;
   QuicConnectionStats* stats_;
 
-  // Reno provided for testing.
+  // If true, Reno congestion control is used instead of Cubic.
   const bool reno_;
 
+  // Number of connections to simulate.
+  int num_connections_;
+
   // ACK counter for the Reno implementation.
   int64 congestion_window_count_;
 
   // Receiver side advertised window.
   QuicByteCount receive_window_;
 
   // Bytes sent and acked since the last loss event.  Used for PRR.
   QuicByteCount prr_out_;
   QuicByteCount prr_delivered_;
   size_t ack_count_since_loss_;
@@ skipping 28 matching lines @@
 
   // Maximum number of outstanding packets for tcp.
   QuicTcpCongestionWindow max_tcp_congestion_window_;
 
   DISALLOW_COPY_AND_ASSIGN(TcpCubicSender);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_