Exponentially back off handshake retransmission timeout
@@ -4779,6 +4779,7 @@ void ngtcp2_conn_set_loss_detection_alarm(ngtcp2_conn *conn) {
alarm_duration =
ngtcp2_max(alarm_duration + rcs->max_ack_delay, NGTCP2_MIN_TLP_TIMEOUT);
+ alarm_duration *= 1 << rcs->handshake_count;
rcs->loss_detection_alarm = rcs->last_hs_tx_pkt_ts + alarm_duration;
return;
