Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / net / quic / quic_connection_stats.h
1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef NET_QUIC_QUIC_CONNECTION_STATS_H_
6 #define NET_QUIC_QUIC_CONNECTION_STATS_H_
7
8 #include <ostream>
9
10 #include "base/basictypes.h"
11 #include "net/base/net_export.h"
12 #include "net/quic/quic_time.h"
13
14 namespace net {
15 // Structure to hold stats for a QuicConnection.
16 struct NET_EXPORT_PRIVATE QuicConnectionStats {
17   QuicConnectionStats();
18   ~QuicConnectionStats();
19
20   NET_EXPORT_PRIVATE friend std::ostream& operator<<(
21       std::ostream& os, const QuicConnectionStats& s);
22
23   uint64 bytes_sent;  // Includes retransmissions, fec.
24   uint32 packets_sent;
25   uint64 stream_bytes_sent;  // non-retransmitted bytes sent in a stream frame.
26   uint32 packets_discarded;  // Packets serialized and discarded before sending.
27
28   // These include version negotiation and public reset packets, which do not
29   // have sequence numbers or frame data.
30   uint64 bytes_received;  // Includes duplicate data for a stream, fec.
31   uint32 packets_received;  // Includes packets which were not processable.
32   uint32 packets_processed;  // Excludes packets which were not processable.
33   uint64 stream_bytes_received;  // Bytes received in a stream frame.
34
35   uint64 bytes_retransmitted;
36   uint32 packets_retransmitted;
37
38   uint64 bytes_spuriously_retransmitted;
39   uint32 packets_spuriously_retransmitted;
40   // Number of packets abandoned as lost by the loss detection algorithm.
41   uint32 packets_lost;
42   uint32 slowstart_packets_lost;  // Number of packets lost exiting slow start.
43
44   uint32 packets_revived;
45   uint32 packets_dropped;  // Duplicate or less than least unacked.
46   uint32 crypto_retransmit_count;
47   // Count of times the loss detection alarm fired.  At least one packet should
48   // be lost when the alarm fires.
49   uint32 loss_timeout_count;
50   uint32 tlp_count;
51   uint32 rto_count;  // Count of times the rto timer fired.
52
53   uint32 min_rtt_us;  // Minimum RTT in microseconds.
54   uint32 srtt_us;  // Smoothed RTT in microseconds.
55   uint32 max_packet_size;  // In bytes.
56   uint64 estimated_bandwidth;  // In bytes per second.
57   uint32 congestion_window;  // In bytes
58
59   // Reordering stats for received packets.
60   // Number of packets received out of sequence number order.
61   uint32 packets_reordered;
62   // Maximum reordering observed in sequence space.
63   uint32 max_sequence_reordering;
64   // Maximum reordering observed in microseconds
65   uint32 max_time_reordering_us;
66
67   // The following stats are used only in TcpCubicSender.
68   // The number of loss events from TCP's perspective.  Each loss event includes
69   // one or more lost packets.
70   uint32 tcp_loss_events;
71   // Total amount of cwnd increase by TCPCubic in congestion avoidance.
72   uint32 cwnd_increase_congestion_avoidance;
73   // Total amount of cwnd increase by TCPCubic in cubic mode.
74   uint32 cwnd_increase_cubic_mode;
75
76   // Creation time, as reported by the QuicClock.
77   QuicTime connection_creation_time;
78 };
79
80 }  // namespace net
81
82 #endif  // NET_QUIC_QUIC_CONNECTION_STATS_H_