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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 #include "net/quic/quic_packet_creator.h" | 5 #include "net/quic/quic_packet_creator.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 | 8 |
| 9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
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| 187 } | 187 } |
| 188 | 188 |
| 189 InFecGroup QuicPacketCreator::MaybeUpdateLengthsAndStartFec() { | 189 InFecGroup QuicPacketCreator::MaybeUpdateLengthsAndStartFec() { |
| 190 if (fec_group_.get() != nullptr) { | 190 if (fec_group_.get() != nullptr) { |
| 191 // Don't update any lengths when an FEC group is open, to ensure same | 191 // Don't update any lengths when an FEC group is open, to ensure same |
| 192 // packet header size in all packets within a group. | 192 // packet header size in all packets within a group. |
| 193 return IN_FEC_GROUP; | 193 return IN_FEC_GROUP; |
| 194 } | 194 } |
| 195 if (!queued_frames_.empty()) { | 195 if (!queued_frames_.empty()) { |
| 196 // Don't change creator state if there are frames queued. | 196 // Don't change creator state if there are frames queued. |
| 197 return fec_group_.get() == nullptr ? NOT_IN_FEC_GROUP : IN_FEC_GROUP; | 197 return NOT_IN_FEC_GROUP; |
| 198 } | 198 } |
| 199 | 199 |
| 200 // Update sequence number length only on packet and FEC group boundaries. | 200 // Update sequence number length only on packet and FEC group boundaries. |
| 201 sequence_number_length_ = next_sequence_number_length_; | 201 sequence_number_length_ = next_sequence_number_length_; |
| 202 | 202 |
| 203 if (!should_fec_protect_) { | 203 if (!should_fec_protect_) { |
| 204 return NOT_IN_FEC_GROUP; | 204 return NOT_IN_FEC_GROUP; |
| 205 } | 205 } |
| 206 // Start a new FEC group since protection is on. Set the fec group number to | 206 // Start a new FEC group since protection is on. Set the fec group number to |
| 207 // the sequence number of the next packet. | 207 // the sequence number of the next packet. |
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| 616 // Don't pad full packets. | 616 // Don't pad full packets. |
| 617 return; | 617 return; |
| 618 } | 618 } |
| 619 | 619 |
| 620 QuicPaddingFrame padding; | 620 QuicPaddingFrame padding; |
| 621 bool success = AddFrame(QuicFrame(&padding), false, false, nullptr); | 621 bool success = AddFrame(QuicFrame(&padding), false, false, nullptr); |
| 622 DCHECK(success); | 622 DCHECK(success); |
| 623 } | 623 } |
| 624 | 624 |
| 625 } // namespace net | 625 } // namespace net |
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