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// 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.
#include <ostream>
#include "base/basictypes.h"
#include "net/base/net_export.h"
#include "net/quic/quic_bandwidth.h"
#include "net/quic/quic_protocol.h"
#include "net/quic/quic_time.h"
namespace net {
// Structure to hold stats for a QuicConnection.
struct NET_EXPORT_PRIVATE QuicConnectionStats {
NET_EXPORT_PRIVATE friend std::ostream& operator<<(
std::ostream& os, const QuicConnectionStats& s);
QuicByteCount bytes_sent; // Includes retransmissions, fec.
QuicPacketCount packets_sent;
// Non-retransmitted bytes sent in a stream frame.
QuicByteCount stream_bytes_sent;
// Packets serialized and discarded before sending.
QuicPacketCount packets_discarded;
// These include version negotiation and public reset packets, which do not
// have sequence numbers or frame data.
QuicByteCount bytes_received; // Includes duplicate data for a stream, fec.
// Includes packets which were not processable.
QuicPacketCount packets_received;
// Excludes packets which were not processable.
QuicPacketCount packets_processed;
QuicByteCount stream_bytes_received; // Bytes received in a stream frame.
QuicByteCount bytes_retransmitted;
QuicPacketCount packets_retransmitted;
QuicByteCount bytes_spuriously_retransmitted;
QuicPacketCount packets_spuriously_retransmitted;
// Number of packets abandoned as lost by the loss detection algorithm.
QuicPacketCount packets_lost;
// Number of packets sent in slow start.
QuicPacketCount slowstart_packets_sent;
// Number of packets lost exiting slow start.
QuicPacketCount slowstart_packets_lost;
QuicPacketCount packets_revived;
QuicPacketCount packets_dropped; // Duplicate or less than least unacked.
size_t crypto_retransmit_count;
// Count of times the loss detection alarm fired. At least one packet should
// be lost when the alarm fires.
size_t loss_timeout_count;
size_t tlp_count;
size_t rto_count; // Count of times the rto timer fired.
int64 min_rtt_us; // Minimum RTT in microseconds.
int64 srtt_us; // Smoothed RTT in microseconds.
QuicByteCount max_packet_size;
QuicByteCount max_received_packet_size;
QuicBandwidth estimated_bandwidth;
// Reordering stats for received packets.
// Number of packets received out of sequence number order.
QuicPacketCount packets_reordered;
// Maximum reordering observed in sequence space.
QuicPacketSequenceNumber max_sequence_reordering;
// Maximum reordering observed in microseconds
int64 max_time_reordering_us;
// The following stats are used only in TcpCubicSender.
// The number of loss events from TCP's perspective. Each loss event includes
// one or more lost packets.
uint32 tcp_loss_events;
// Creation time, as reported by the QuicClock.
QuicTime connection_creation_time;
} // namespace net