Initial import of Cobalt 2.8885 2016-07-27
diff --git a/src/net/quic/congestion_control/quic_receipt_metrics_collector.h b/src/net/quic/congestion_control/quic_receipt_metrics_collector.h
new file mode 100644
index 0000000..dbd3c3c
--- /dev/null
+++ b/src/net/quic/congestion_control/quic_receipt_metrics_collector.h
@@ -0,0 +1,58 @@
+// 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.
+//
+// This is the base class for QUIC receive side congestion control.
+// This class will provide the QuicCongestionFeedbackFrame objects for outgoing
+// packets if needed.
+// The acctual receive side algorithm is implemented via the
+// ReceiveAlgorithmInterface.
+
+#ifndef NET_QUIC_CONGESTION_CONTROL_QUIC_RECEIPT_METRICS_COLLECTOR_H_
+#define NET_QUIC_CONGESTION_CONTROL_QUIC_RECEIPT_METRICS_COLLECTOR_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "net/base/net_export.h"
+#include "net/quic/congestion_control/receive_algorithm_interface.h"
+#include "net/quic/quic_clock.h"
+#include "net/quic/quic_protocol.h"
+
+namespace net {
+
+class NET_EXPORT_PRIVATE QuicReceiptMetricsCollector {
+ public:
+ QuicReceiptMetricsCollector(const QuicClock* clock,
+ CongestionFeedbackType congestion_type);
+
+ virtual ~QuicReceiptMetricsCollector();
+
+ // Should be called for each ACK packet to decide if we need to attach a
+ // QuicCongestionFeedbackFrame block.
+ // Returns false if no QuicCongestionFeedbackFrame block is needed.
+ // Otherwise fills in feedback and return true.
+ virtual bool GenerateCongestionFeedback(
+ QuicCongestionFeedbackFrame* feedback);
+
+ // Should be called for each incoming packet.
+ // bytes: is the packet size in bytes including IP headers.
+ // sequence_number: is the unique sequence number from the QUIC packet header.
+ // timestamp: is the sent timestamp from the QUIC packet header.
+ // TODO(pwestin) which type should we use for timestamp?
+ // revived: is set if the packet is lost and then recovered with help of a
+ // FEC packet.
+ virtual void RecordIncomingPacket(size_t bytes,
+ QuicPacketSequenceNumber sequence_number,
+ QuicTime timestamp,
+ bool revived);
+
+ // TODO(pwestin) Keep track of the number of FEC recovered packets.
+ // Needed by all congestion control algorithms.
+
+ private:
+ scoped_ptr<ReceiveAlgorithmInterface> receive_algorithm_;
+};
+
+} // namespace net
+
+#endif // NET_QUIC_CONGESTION_CONTROL_QUIC_RECEIPT_METRICS_COLLECTOR_H_
