Add new histograms to confirm that PINGs are outstanding when a QUIC connection times out with open…

net/quic/quic_client_session.cc

 // Copyright (c) 2012 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_client_session.h"
 
 #include "base/callback_helpers.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
@@ skipping 584 matching lines @@
         "Net.QuicSession.ConnectionCloseErrorCodeServer", error);
   } else {
     UMA_HISTOGRAM_SPARSE_SLOWLY(
         "Net.QuicSession.ConnectionCloseErrorCodeClient", error);
   }
 
   if (error == QUIC_CONNECTION_TIMED_OUT) {
     UMA_HISTOGRAM_COUNTS(
         "Net.QuicSession.ConnectionClose.NumOpenStreams.TimedOut",
         GetNumOpenStreams());
-    if (!IsCryptoHandshakeConfirmed()) {
+    if (IsCryptoHandshakeConfirmed()) {
+      if (GetNumOpenStreams() > 0) {
+        UMA_HISTOGRAM_BOOLEAN(
+            "Net.QuicSession.TimedOutWithOpenStreams.HasUnackedPackets",
+            connection()->sent_packet_manager().HasUnackedPackets());
+        UMA_HISTOGRAM_COUNTS(
+            "Net.QuicSession.TimedOutWithOpenStreams.ConsecutiveRTOCount",
+            connection()->sent_packet_manager().consecutive_rto_count());
+        UMA_HISTOGRAM_COUNTS(
+            "Net.QuicSession.TimedOutWithOpenStreams.ConsecutiveTLPCount",
+            connection()->sent_packet_manager().consecutive_tlp_count());
+      }
+    } else {
       UMA_HISTOGRAM_COUNTS(
           "Net.QuicSession.ConnectionClose.NumOpenStreams.HandshakeTimedOut",
           GetNumOpenStreams());
       UMA_HISTOGRAM_COUNTS(
           "Net.QuicSession.ConnectionClose.NumTotalStreams.HandshakeTimedOut",
           num_total_streams_);
     }
   }
 
   if (!IsCryptoHandshakeConfirmed()) {
@@ skipping 241 matching lines @@
     return;
 
   // TODO(rch): re-enable this code once beta is cut.
   //  if (stream_factory_)
   //    stream_factory_->OnSessionConnectTimeout(this);
   //  CloseAllStreams(ERR_QUIC_HANDSHAKE_FAILED);
   //  DCHECK_EQ(0u, GetNumOpenStreams());
 }
 
 }  // namespace net