Objective-C API to set the ICE check rate through RTCConfiguration.

webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h

 /*
  *  Copyright 2015 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 86 matching lines @@
 /** Prune turn ports on the same network to the same turn server.
  *  Default is NO.
  */
 @property(nonatomic, assign) BOOL shouldPruneTurnPorts;
 
 /** If set to YES, this means the ICE transport should presume TURN-to-TURN
  *  candidate pairs will succeed, even before a binding response is received.
  */
 @property(nonatomic, assign) BOOL shouldPresumeWritableWhenFullyRelayed;
 
+/** If set to non-nil, controls the minimal interval between consecutive ICE
+ *   check packets.

[tkchin_webrtc, 2017/02/02 19:48:54]

nit: align

+ */
+@property(nonatomic, copy, nullable) NSNumber *iceCheckMinInterval;
+
 - (instancetype)init NS_DESIGNATED_INITIALIZER;
 
 @end
 
 NS_ASSUME_NONNULL_END