Not sending QUIC packets if the send alarm is set. Behind FLAGS_respect_send_alarm

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index 0fa6eafe0d496e3225cf3e0c3dbc16fc566d8b89..79d5131aa5ee8eca2253810e31225aebd3e0ed46 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -1474,6 +1474,11 @@ bool QuicConnection::CanWrite(HasRetransmittableData retransmittable) {
     return false;
   }
 
+  // If the send alarm is set, wait for it to fire.
+  if (FLAGS_respect_send_alarm && send_alarm_->IsSet()) {
+    return false;
+  }
+
   QuicTime now = clock_->Now();
   QuicTime::Delta delay = sent_packet_manager_.TimeUntilSend(
       now, retransmittable);
@@ -1489,7 +1494,9 @@ bool QuicConnection::CanWrite(HasRetransmittableData retransmittable) {
              << "ms";
     return false;
   }
-  send_alarm_->Cancel();
+  if (!FLAGS_respect_send_alarm) {
+    send_alarm_->Cancel();
+  }
   return true;
 }