Dampening connection switch.

webrtc/p2p/base/port.h

Index: webrtc/p2p/base/port.h
diff --git a/webrtc/p2p/base/port.h b/webrtc/p2p/base/port.h
index 2c3b61b718307173d152a1c8f35ecf933b00aaed..9a91e402f2c11bb3a5a348a403bdb74e12c6c3be 100644
--- a/webrtc/p2p/base/port.h
+++ b/webrtc/p2p/base/port.h
@@ -568,6 +568,7 @@ class Connection : public CandidatePairInterface,
   State state() const { return state_; }
 
   int num_pings_sent() const { return num_pings_sent_; }
+  void reset_num_pings_sent() { num_pings_sent_ = 0; }
 
   IceMode remote_ice_mode() const { return remote_ice_mode_; }
 
@@ -590,6 +591,15 @@ class Connection : public CandidatePairInterface,
   // Returns the last received time of any data, stun request, or stun
   // response in milliseconds
   int64_t last_received() const;
+  // Returns the first received time of any packet since the last time the
+  // transport channel is weak.

[pthatcher1, 2016/07/13 21:17:22]

is weak => was weakly connected

[honghaiz3, 2016/07/14 04:54:20]

Method removed and replaced.

+  int64_t first_received_since_channel_weak() const {
+    return first_received_since_channel_weak_;
+  }
+
+  void reset_first_received_since_channel_weak() {
+    first_received_since_channel_weak_ = 0;
+  }
 
   bool stable(int64_t now) const;
 
@@ -648,6 +658,7 @@ class Connection : public CandidatePairInterface,
                                 // side
   int64_t last_data_received_;
   int64_t last_ping_response_received_;
+  int64_t first_received_since_channel_weak_ = 0;
   std::vector<SentPing> pings_since_last_response_;
 
   rtc::RateTracker recv_rate_tracker_;