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.cc b/quic/core/quic_connection.cc
index 6cb6c85..1fc69e1 100644
--- a/quic/core/quic_connection.cc
+++ b/quic/core/quic_connection.cc
@@ -2281,10 +2281,7 @@
void QuicConnection::SendProbingRetransmissions() {
while (sent_packet_manager_.GetSendAlgorithm()->ShouldSendProbingPacket() &&
CanWrite(HAS_RETRANSMITTABLE_DATA)) {
- const bool can_retransmit =
- sent_packet_manager_.MaybeRetransmitOldestPacket(
- PROBING_RETRANSMISSION);
- if (!can_retransmit) {
+ if (!visitor_->SendProbingData()) {
QUIC_DVLOG(1)
<< "Cannot send probing retransmissions: nothing to retransmit.";
break;
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;
diff --git a/quic/core/quic_connection_test.cc b/quic/core/quic_connection_test.cc
index 5d35353..fe74768 100644
--- a/quic/core/quic_connection_test.cc
+++ b/quic/core/quic_connection_test.cc
@@ -8063,6 +8063,10 @@
EXPECT_CALL(visitor_, WillingAndAbleToWrite())
.WillRepeatedly(Return(false));
}
+ EXPECT_CALL(visitor_, SendProbingData()).WillRepeatedly([this] {
+ return connection_.sent_packet_manager().MaybeRetransmitOldestPacket(
+ PROBING_RETRANSMISSION);
+ });
// Fix congestion window to be 20,000 bytes.
EXPECT_CALL(*send_algorithm_, CanSend(Ge(20000u)))
.WillRepeatedly(Return(false));
@@ -8209,6 +8213,10 @@
}));
EXPECT_CALL(*send_algorithm_, ShouldSendProbingPacket())
.WillRepeatedly(Return(true));
+ EXPECT_CALL(visitor_, SendProbingData()).WillRepeatedly([this] {
+ return connection_.sent_packet_manager().MaybeRetransmitOldestPacket(
+ PROBING_RETRANSMISSION);
+ });
connection_.SendProbingRetransmissions();
@@ -8232,6 +8240,10 @@
EXPECT_CALL(debug_visitor, OnPacketSent(_, _, _, _)).Times(0);
EXPECT_CALL(*send_algorithm_, ShouldSendProbingPacket())
.WillRepeatedly(Return(true));
+ EXPECT_CALL(visitor_, SendProbingData()).WillRepeatedly([this] {
+ return connection_.sent_packet_manager().MaybeRetransmitOldestPacket(
+ PROBING_RETRANSMISSION);
+ });
connection_.SendProbingRetransmissions();
}
diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index 86ee78f..2b9ffa5 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -587,6 +587,14 @@
}
}
+bool QuicSession::SendProbingData() {
+ if (connection()->sent_packet_manager().MaybeRetransmitOldestPacket(
+ PROBING_RETRANSMISSION)) {
+ return true;
+ }
+ return false;
+}
+
bool QuicSession::WillingAndAbleToWrite() const {
// Schedule a write when:
// 1) control frame manager has pending or new control frames, or
diff --git a/quic/core/quic_session.h b/quic/core/quic_session.h
index 54637d4..b24e5b6 100644
--- a/quic/core/quic_session.h
+++ b/quic/core/quic_session.h
@@ -115,6 +115,7 @@
const QuicSocketAddress& self_address,
const QuicSocketAddress& peer_address) override;
void OnCanWrite() override;
+ bool SendProbingData() override;
void OnCongestionWindowChange(QuicTime /*now*/) override {}
void OnConnectionMigration(AddressChangeType type) override {}
// Adds a connection level WINDOW_UPDATE frame.
