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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 // Responsible for generating packets on behalf of a QuicConnection. | 5 // Responsible for generating packets on behalf of a QuicConnection. |
6 // Packets are serialized just-in-time. Control frames are queued. | 6 // Packets are serialized just-in-time. Control frames are queued. |
7 // Ack and Feedback frames will be requested from the Connection | 7 // Ack and Feedback frames will be requested from the Connection |
8 // just-in-time. When a packet needs to be sent, the Generator | 8 // just-in-time. When a packet needs to be sent, the Generator |
9 // will serialize a packet and pass it to QuicConnection::SendOrQueuePacket() | 9 // will serialize a packet and pass it to QuicConnection::SendOrQueuePacket() |
10 // | 10 // |
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41 #define NET_QUIC_QUIC_PACKET_GENERATOR_H_ | 41 #define NET_QUIC_QUIC_PACKET_GENERATOR_H_ |
42 | 42 |
43 #include <stddef.h> | 43 #include <stddef.h> |
44 #include <stdint.h> | 44 #include <stdint.h> |
45 | 45 |
46 #include <list> | 46 #include <list> |
47 | 47 |
48 #include "base/macros.h" | 48 #include "base/macros.h" |
49 #include "net/base/net_export.h" | 49 #include "net/base/net_export.h" |
50 #include "net/quic/core/quic_packet_creator.h" | 50 #include "net/quic/core/quic_packet_creator.h" |
| 51 #include "net/quic/core/quic_pending_retransmission.h" |
51 #include "net/quic/core/quic_sent_packet_manager.h" | 52 #include "net/quic/core/quic_sent_packet_manager.h" |
52 #include "net/quic/core/quic_types.h" | 53 #include "net/quic/core/quic_types.h" |
53 | 54 |
54 namespace net { | 55 namespace net { |
55 | 56 |
56 namespace test { | 57 namespace test { |
57 class QuicPacketGeneratorPeer; | 58 class QuicPacketGeneratorPeer; |
58 } // namespace test | 59 } // namespace test |
59 | 60 |
60 class NET_EXPORT_PRIVATE QuicPacketGenerator { | 61 class NET_EXPORT_PRIVATE QuicPacketGenerator { |
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133 // header of packets encrypted at the initial encryption level. Should only | 134 // header of packets encrypted at the initial encryption level. Should only |
134 // be called by servers. | 135 // be called by servers. |
135 void SetDiversificationNonce(const DiversificationNonce& nonce); | 136 void SetDiversificationNonce(const DiversificationNonce& nonce); |
136 | 137 |
137 // Creates a version negotiation packet which supports |supported_versions|. | 138 // Creates a version negotiation packet which supports |supported_versions|. |
138 std::unique_ptr<QuicEncryptedPacket> SerializeVersionNegotiationPacket( | 139 std::unique_ptr<QuicEncryptedPacket> SerializeVersionNegotiationPacket( |
139 const QuicVersionVector& supported_versions); | 140 const QuicVersionVector& supported_versions); |
140 | 141 |
141 // Re-serializes frames with the original packet's packet number length. | 142 // Re-serializes frames with the original packet's packet number length. |
142 // Used for retransmitting packets to ensure they aren't too long. | 143 // Used for retransmitting packets to ensure they aren't too long. |
143 void ReserializeAllFrames(const PendingRetransmission& retransmission, | 144 void ReserializeAllFrames(const QuicPendingRetransmission& retransmission, |
144 char* buffer, | 145 char* buffer, |
145 size_t buffer_len); | 146 size_t buffer_len); |
146 | 147 |
147 // Update the packet number length to use in future packets as soon as it | 148 // Update the packet number length to use in future packets as soon as it |
148 // can be safely changed. | 149 // can be safely changed. |
149 void UpdateSequenceNumberLength(QuicPacketNumber least_packet_awaited_by_peer, | 150 void UpdateSequenceNumberLength(QuicPacketNumber least_packet_awaited_by_peer, |
150 QuicPacketCount max_packets_in_flight); | 151 QuicPacketCount max_packets_in_flight); |
151 | 152 |
152 // Set the minimum number of bytes for the connection id length; | 153 // Set the minimum number of bytes for the connection id length; |
153 void SetConnectionIdLength(uint32_t length); | 154 void SetConnectionIdLength(uint32_t length); |
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210 // are referenced elsewhere so that they can later be (optionally) | 211 // are referenced elsewhere so that they can later be (optionally) |
211 // retransmitted. | 212 // retransmitted. |
212 QuicStopWaitingFrame pending_stop_waiting_frame_; | 213 QuicStopWaitingFrame pending_stop_waiting_frame_; |
213 | 214 |
214 DISALLOW_COPY_AND_ASSIGN(QuicPacketGenerator); | 215 DISALLOW_COPY_AND_ASSIGN(QuicPacketGenerator); |
215 }; | 216 }; |
216 | 217 |
217 } // namespace net | 218 } // namespace net |
218 | 219 |
219 #endif // NET_QUIC_QUIC_PACKET_GENERATOR_H_ | 220 #endif // NET_QUIC_QUIC_PACKET_GENERATOR_H_ |
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