Dampening connection switch.

webrtc/p2p/base/transport.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 176 matching lines @@
   int stable_writable_connection_ping_interval = -1;
 
   // If set to true, this means the ICE transport should presume TURN-to-TURN
   // candidate pairs will succeed, even before a binding response is received.
   bool presume_writable_when_fully_relayed = false;
 
   // Interval to check on all networks and to perform ICE regathering on any
   // active network having no connection on it.
   rtc::Optional<int> regather_on_failed_networks_interval;
 
+  // The time period in which we will not switch the selected connection
+  // when a new connection becomes receiving but the selected connection is not
+  // in case that the selected connection may become receiving soon.
+  rtc::Optional<int> receiving_switching_delay;
+
   IceConfig() {}
   IceConfig(int receiving_timeout_ms,
             int backup_connection_ping_interval,
             ContinualGatheringPolicy gathering_policy,
             bool prioritize_most_likely_candidate_pairs,
             int stable_writable_connection_ping_interval_ms,
             bool presume_writable_when_fully_relayed,
-            int regather_on_failed_networks_interval_ms)
+            int regather_on_failed_networks_interval_ms,
+            int receiving_switching_delay_ms)
       : receiving_timeout(receiving_timeout_ms),
         backup_connection_ping_interval(backup_connection_ping_interval),
         continual_gathering_policy(gathering_policy),
         prioritize_most_likely_candidate_pairs(
             prioritize_most_likely_candidate_pairs),
         stable_writable_connection_ping_interval(
             stable_writable_connection_ping_interval_ms),
         presume_writable_when_fully_relayed(
             presume_writable_when_fully_relayed),
         regather_on_failed_networks_interval(
-            regather_on_failed_networks_interval_ms) {}
+            regather_on_failed_networks_interval_ms),
+        receiving_switching_delay(receiving_switching_delay_ms) {}
 };
 
 bool BadTransportDescription(const std::string& desc, std::string* err_desc);
 
 bool IceCredentialsChanged(const std::string& old_ufrag,
                            const std::string& old_pwd,
                            const std::string& new_ufrag,
                            const std::string& new_pwd);
 
 class Transport : public sigslot::has_slots<> {
@@ skipping 166 matching lines @@
 
   ChannelMap channels_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(Transport);
 };
 
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_TRANSPORT_H_