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Side by Side Diff: net/quic/quic_protocol.h

Issue 761903003: Update from https://crrev.com/306655 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef NET_QUIC_QUIC_PROTOCOL_H_ 5 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
6 #define NET_QUIC_QUIC_PROTOCOL_H_ 6 #define NET_QUIC_QUIC_PROTOCOL_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <limits> 9 #include <limits>
10 #include <list> 10 #include <list>
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52 // Default and initial maximum size in bytes of a QUIC packet. 52 // Default and initial maximum size in bytes of a QUIC packet.
53 const QuicByteCount kDefaultMaxPacketSize = 1350; 53 const QuicByteCount kDefaultMaxPacketSize = 1350;
54 // The maximum packet size of any QUIC packet, based on ethernet's max size, 54 // The maximum packet size of any QUIC packet, based on ethernet's max size,
55 // minus the IP and UDP headers. IPv6 has a 40 byte header, UPD adds an 55 // minus the IP and UDP headers. IPv6 has a 40 byte header, UPD adds an
56 // additional 8 bytes. This is a total overhead of 48 bytes. Ethernet's 56 // additional 8 bytes. This is a total overhead of 48 bytes. Ethernet's
57 // max packet size is 1500 bytes, 1500 - 48 = 1452. 57 // max packet size is 1500 bytes, 1500 - 48 = 1452.
58 const QuicByteCount kMaxPacketSize = 1452; 58 const QuicByteCount kMaxPacketSize = 1452;
59 // Default maximum packet size used in Linux TCP implementations. 59 // Default maximum packet size used in Linux TCP implementations.
60 const QuicByteCount kDefaultTCPMSS = 1460; 60 const QuicByteCount kDefaultTCPMSS = 1460;
61 61
62 // Maximum size of the initial congestion window in packets.
63 const QuicPacketCount kMaxInitialWindow = 100;
64 // We match SPDY's use of 32 when secure (since we'd compete with SPDY). 62 // We match SPDY's use of 32 when secure (since we'd compete with SPDY).
65 const QuicPacketCount kInitialCongestionWindowSecure = 32; 63 const QuicPacketCount kInitialCongestionWindowSecure = 32;
66 // Be conservative, and just use double a typical TCP ICWND for HTTP. 64 // Be conservative, and just use double a typical TCP ICWND for HTTP.
67 const QuicPacketCount kInitialCongestionWindowInsecure = 20; 65 const QuicPacketCount kInitialCongestionWindowInsecure = 20;
68 66
69 // Default size of initial flow control window, for both stream and session. 67 // Default size of initial flow control window, for both stream and session.
70 const uint32 kDefaultFlowControlSendWindow = 16 * 1024; // 16 KB 68 const uint32 kDefaultFlowControlSendWindow = 16 * 1024; // 16 KB
71 69
72 // Maximum size of the congestion window, in packets, for TCP congestion control 70 // Minimum size of the CWND, in packets, when doing bandwidth resumption.
73 // algorithms. 71 const QuicPacketCount kMinCongestionWindowForBandwidthResumption = 10;
74 const size_t kMaxTcpCongestionWindow = 200; 72
73 // Maximum size of the CWND, in packets, for TCP congestion control algorithms.
74 const QuicPacketCount kMaxTcpCongestionWindow = 200;
75 75
76 // Default size of the socket receive buffer in bytes. 76 // Default size of the socket receive buffer in bytes.
77 const QuicByteCount kDefaultSocketReceiveBuffer = 256 * 1024; 77 const QuicByteCount kDefaultSocketReceiveBuffer = 256 * 1024;
78 // Minimum size of the socket receive buffer in bytes. 78 // Minimum size of the socket receive buffer in bytes.
79 // Smaller values are ignored. 79 // Smaller values are ignored.
80 const QuicByteCount kMinSocketReceiveBuffer = 16 * 1024; 80 const QuicByteCount kMinSocketReceiveBuffer = 16 * 1024;
81 81
82 // Don't allow a client to suggest an RTT shorter than 10ms. 82 // Don't allow a client to suggest an RTT shorter than 10ms.
83 const uint32 kMinInitialRoundTripTimeUs = 10 * kNumMicrosPerMilli; 83 const uint32 kMinInitialRoundTripTimeUs = 10 * kNumMicrosPerMilli;
84 84
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1082 QuicSequenceNumberLength sequence_number_length, 1082 QuicSequenceNumberLength sequence_number_length,
1083 TransmissionType transmission_type, 1083 TransmissionType transmission_type,
1084 QuicTime sent_time); 1084 QuicTime sent_time);
1085 1085
1086 RetransmittableFrames* retransmittable_frames; 1086 RetransmittableFrames* retransmittable_frames;
1087 QuicSequenceNumberLength sequence_number_length; 1087 QuicSequenceNumberLength sequence_number_length;
1088 // Zero when the packet is serialized, non-zero once it's sent. 1088 // Zero when the packet is serialized, non-zero once it's sent.
1089 QuicTime sent_time; 1089 QuicTime sent_time;
1090 // Zero when the packet is serialized, non-zero once it's sent. 1090 // Zero when the packet is serialized, non-zero once it's sent.
1091 QuicByteCount bytes_sent; 1091 QuicByteCount bytes_sent;
1092 size_t nack_count; 1092 QuicPacketCount nack_count;
1093 // Reason why this packet was transmitted. 1093 // Reason why this packet was transmitted.
1094 TransmissionType transmission_type; 1094 TransmissionType transmission_type;
1095 // Stores the sequence numbers of all transmissions of this packet. 1095 // Stores the sequence numbers of all transmissions of this packet.
1096 // Must always be nullptr or have multiple elements. 1096 // Must always be nullptr or have multiple elements.
1097 SequenceNumberList* all_transmissions; 1097 SequenceNumberList* all_transmissions;
1098 // In flight packets have not been abandoned or lost. 1098 // In flight packets have not been abandoned or lost.
1099 bool in_flight; 1099 bool in_flight;
1100 // True if the packet can never be acked, so it can be removed. 1100 // True if the packet can never be acked, so it can be removed.
1101 bool is_unackable; 1101 bool is_unackable;
1102 // True if the packet is an FEC packet. 1102 // True if the packet is an FEC packet.
1103 bool is_fec_packet; 1103 bool is_fec_packet;
1104 }; 1104 };
1105 1105
1106 } // namespace net 1106 } // namespace net
1107 1107
1108 #endif // NET_QUIC_QUIC_PROTOCOL_H_ 1108 #endif // NET_QUIC_QUIC_PROTOCOL_H_
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