Allow applications to limit the ICE check rate through RTCConfiguration

webrtc/api/peerconnectioninterface.h

 /*
  *  Copyright 2012 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 362 matching lines @@
     bool prune_turn_ports = false;
     // 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;
     // If true, "renomination" will be added to the ice options in the transport
     // description.
     bool enable_ice_renomination = false;
     // If true, ICE role is redetermined when peerconnection sets a local
     // transport description that indicates an ICE restart.
     bool redetermine_role_on_ice_restart = true;
+    // If set, the min interval (max rate) at which we will send ICE checks
+    // (STUN pings), in milliseconds.

[Taylor Brandstetter, 2017/02/02 07:03:55]

Nit: The variable could be named in milliseconds (ice_check_min_interval_ms) to
make this more clear

[skvlad, 2017/02/02 08:51:24]

None of the other timeout/interval parameters are. If you prefer clarity over
consistency, I can rename it.

[Taylor Brandstetter, 2017/02/02 18:16:01]

Nah, consistency is better.

+    rtc::Optional<int> ice_check_min_interval;
     //
     // Don't forget to update operator== if adding something.
     //
   };
 
   struct RTCOfferAnswerOptions {
     static const int kUndefined = -1;
     static const int kMaxOfferToReceiveMedia = 1;
 
     // The default value for constraint offerToReceiveX:true.
@@ skipping 547 matching lines @@
     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     cricket::WebRtcVideoDecoderFactory* decoder_factory) {
   return CreatePeerConnectionFactory(
       worker_and_network_thread, worker_and_network_thread, signaling_thread,
       default_adm, encoder_factory, decoder_factory);
 }
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTIONINTERFACE_H_