gfe-relnote: In QUIC, arm PTO from Now() if there is no in flight packet. Affecting client only. Protected by existing gfe2_reloadable_flag_quic_enable_version_draft_25_v3 and gfe2_reloadable_flag_quic_enable_version_draft_27.
PiperOrigin-RevId: 308875747
Change-Id: I4fe855baa25131be8ce6c345f592788868a4df7a
diff --git a/quic/core/quic_sent_packet_manager.cc b/quic/core/quic_sent_packet_manager.cc
index f0ee1a7..512632d 100644
--- a/quic/core/quic_sent_packet_manager.cc
+++ b/quic/core/quic_sent_packet_manager.cc
@@ -844,8 +844,9 @@
// Find out the packet number space to send probe packets.
if (!GetEarliestPacketSentTimeForPto(&packet_number_space)
.IsInitialized()) {
- QUIC_BUG << "earlist_sent_time not initialized when trying to send PTO "
- "retransmissions";
+ QUIC_BUG_IF(unacked_packets_.perspective() == Perspective::IS_SERVER)
+ << "earlist_sent_time not initialized when trying to send PTO "
+ "retransmissions";
return;
}
}
@@ -1067,8 +1068,12 @@
PacketNumberSpace packet_number_space = NUM_PACKET_NUMBER_SPACES;
// earliest_right_edge is the earliest sent time of the last in flight
// packet of all packet number spaces.
- const QuicTime earliest_right_edge =
+ QuicTime earliest_right_edge =
GetEarliestPacketSentTimeForPto(&packet_number_space);
+ if (!earliest_right_edge.IsInitialized()) {
+ // Arm PTO from now if there is no in flight packets.
+ earliest_right_edge = clock_->ApproximateNow();
+ }
if (first_pto_srtt_multiplier_ > 0 &&
packet_number_space == APPLICATION_DATA &&
consecutive_pto_count_ == 0) {
