Initial import.

1 files changed, 58 insertions, 0 deletions

diff --git a/chromium/net/quic/congestion_control/inter_arrival_probe.h b/chromium/net/quic/congestion_control/inter_arrival_probe.h
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+++ b/chromium/net/quic/congestion_control/inter_arrival_probe.h
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+// Copyright (c) 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.
+
+// Class that handle the initial probing phase of inter arrival congestion
+// control.
+#ifndef NET_QUIC_CONGESTION_CONTROL_INTER_ARRIVAL_PROBE_H_
+#define NET_QUIC_CONGESTION_CONTROL_INTER_ARRIVAL_PROBE_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "net/base/net_export.h"
+#include "net/quic/congestion_control/available_channel_estimator.h"
+#include "net/quic/quic_bandwidth.h"
+
+namespace net {
+
+class NET_EXPORT_PRIVATE InterArrivalProbe {
+ public:
+  InterArrivalProbe();
+  ~InterArrivalProbe();
+
+  // Call every time a packet is sent to the network.
+  void OnSentPacket(QuicByteCount bytes);
+
+  // Call once for each sent packet that we receive an acknowledgement from
+  // the peer for.
+  void OnAcknowledgedPacket(QuicByteCount bytes);
+
+  // Call to get the number of bytes that can be sent as part of this probe.
+  QuicByteCount GetAvailableCongestionWindow();
+
+  // Call once for each sent packet we receive a congestion feedback from the
+  // peer for.
+  // If a peer sends both and ack and feedback for a sent packet, both
+  // OnAcknowledgedPacket and OnIncomingFeedback should be called.
+  void OnIncomingFeedback(QuicPacketSequenceNumber sequence_number,
+                          QuicByteCount bytes_sent,
+                          QuicTime time_sent,
+                          QuicTime time_received);
+
+  // Returns false as long as we are probing, available_channel_estimate is
+  // invalid during that time. When the probe is completed this function return
+  // true and available_channel_estimate contains the estimate.
+  bool GetEstimate(QuicBandwidth* available_channel_estimate);
+
+ private:
+  scoped_ptr<AvailableChannelEstimator> available_channel_estimator_;
+  QuicPacketSequenceNumber first_sequence_number_;
+  bool estimate_available_;
+  QuicBandwidth available_channel_estimate_;
+  QuicByteCount unacked_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(InterArrivalProbe);
+};
+
+}  // namespace net
+#endif  // NET_QUIC_CONGESTION_CONTROL_INTER_ARRIVAL_PROBE_H_