Add a new callback for probing retransmissions.
Whenever the connection needs to send probing retransmissions it calls the
session to decide what data to send.
gfe-relnote: n/a (probing retransmissions only used by Quartc)
PiperOrigin-RevId: 245817562
Change-Id: I2239c32ea4e2f6aa7dd6f733045ccc8fa0da4dc5
diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index b37b60c..3173ee3 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -143,6 +143,10 @@
// Called when a blocked socket becomes writable.
virtual void OnCanWrite() = 0;
+ // Called when the connection needs more data to probe for additional
+ // bandwidth. Returns true if data was sent, false otherwise.
+ virtual bool SendProbingData() = 0;
+
// Called when the connection experiences a change in congestion window.
virtual void OnCongestionWindowChange(QuicTime now) = 0;
