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
  13 namespace net {
  14 // TODO(satyamshekhar): Add more interesting stats:
  15 // 1. (C/S)HLO retransmission count.
  16 // 2. SHLO received to first stream packet processed time.
  17 // 3. CHLO sent to SHLO received time.
  18 // 4. Number of migrations.
  19 // 5. Number of out of order packets.
  20 // 6. Number of connections that require more that 1-RTT.
  21 // 7. Avg number of streams / session.
  22 // 8. Number of duplicates received.
  23 // 9. Fraction of data transferred that was padding.
  24
  25 // Structure to hold stats for a QuicConnection.
  26 struct NET_EXPORT_PRIVATE QuicConnectionStats {
  27   QuicConnectionStats();
  28   ~QuicConnectionStats();
  29
  30   NET_EXPORT_PRIVATE friend std::ostream& operator<<(
  31       std::ostream& os, const QuicConnectionStats& s);
  32
  33   uint64 bytes_sent;  // includes retransmissions, fec.
  34   uint32 packets_sent;
  35   uint64 stream_bytes_sent;  // non-retransmitted bytes sent in a stream frame.
  36
  37   uint64 bytes_received;  // includes duplicate data for a stream, fec.
  38   uint32 packets_received;  // includes dropped packets
  39   uint64 stream_bytes_received;  // bytes received in a stream frame.
  40
  41   uint64 bytes_retransmitted;
  42   uint32 packets_retransmitted;
  43
  44   uint32 packets_spuriously_retransmitted;
  45   uint32 packets_lost;
  46
  47   uint32 packets_revived;
  48   uint32 packets_dropped;  // duplicate or less than least unacked.
  49   uint32 crypto_retransmit_count;
  50   uint32 loss_timeout_count;  // Count of times the loss detection alarm fired.
  51   uint32 tlp_count;
  52   uint32 rto_count;
  53
  54   uint32 rtt;  // In microseconds
  55   uint64 estimated_bandwidth;
  56
  57   // The following stats are used only in TcpCubicSender.
  58   // Total amount of cwnd increase by TCPCubic in congestion avoidance.
  59   uint32 cwnd_increase_congestion_avoidance;
  60   // Total amount of cwnd increase by TCPCubic in cubic mode.
  61   uint32 cwnd_increase_cubic_mode;
  62   // TODO(satyamshekhar): Add window_size, mss and mtu.
  63 };
  64
  65 }  // namespace net
  66
  67 #endif  // NET_QUIC_QUIC_CONNECTION_STATS_H_