Ignore RTT measurements greater than 30 seconds in QUIC and limit the LOG(WARNING) to 10. Protected…

net/quic/quic_sent_packet_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_sent_packet_manager.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 735 matching lines @@
     QUIC_BUG << "Acked packet has zero sent time, largest_observed:"
              << ack_frame.largest_observed;
     return false;
   }
 
   QuicTime::Delta send_delta = ack_receive_time - transmission_info.sent_time;
   const int kMaxSendDeltaSeconds = 30;
   if (FLAGS_quic_socket_walltimestamps &&
       send_delta.ToSeconds() > kMaxSendDeltaSeconds) {
     // send_delta can be very high if local clock is changed mid-connection.
-    LOG(WARNING) << "Excessive send delta: " << send_delta.ToSeconds()
-                 << ", setting to: " << kMaxSendDeltaSeconds;
-    send_delta = QuicTime::Delta::FromSeconds(kMaxSendDeltaSeconds);
+    LOG(WARNING)
+        << "Excessive send delta: " << send_delta.ToSeconds()
+        << ", setting to: " << kMaxSendDeltaSeconds
+        << " largest_observed:" << ack_frame.largest_observed
+        << " ack_receive_time:" << ack_receive_time.ToDebuggingValue()
+        << " sent_time:" << transmission_info.sent_time.ToDebuggingValue();
+    return false;
   }
   rtt_stats_.UpdateRtt(send_delta, ack_frame.ack_delay_time, ack_receive_time);
 
   return true;
 }
 
 QuicTime::Delta QuicSentPacketManager::TimeUntilSend(
     QuicTime now,
     HasRetransmittableData retransmittable,
     QuicPathId* path_id) {
@@ skipping 221 matching lines @@
 TransmissionInfo* QuicSentPacketManager::GetMutableTransmissionInfo(
     QuicPacketNumber packet_number) {
   return unacked_packets_.GetMutableTransmissionInfo(packet_number);
 }
 
 void QuicSentPacketManager::RemoveObsoletePackets() {
   unacked_packets_.RemoveObsoletePackets();
 }
 
 }  // namespace net