Support sender control of ack frequency step2: (1) add min_ack_delay transport parameters. (2) client send min_ack_delay by default. protected by gfe2_reloadable_flag_quic_record_received_min_ack_delay.
PiperOrigin-RevId: 321468850
Change-Id: I71a9b8ab272400a80a1af091f92e440172885dc5
diff --git a/quic/core/quic_constants.h b/quic/core/quic_constants.h
index 51ad0f0..6da3151 100644
--- a/quic/core/quic_constants.h
+++ b/quic/core/quic_constants.h
@@ -123,6 +123,10 @@
// in low-bandwidth (< ~384 kbps), where an ack is sent per packet.
const int64_t kDefaultDelayedAckTimeMs = 25;
+// Default minimum delayed ack time, in ms (used only for sender control of ack
+// frequency).
+const uint32_t kDefaultMinAckDelayTimeMs = 1;
+
// Default shift of the ACK delay in the IETF QUIC ACK frame.
const uint32_t kDefaultAckDelayExponent = 3;
