Allow applications to limit the ICE check rate through RTCConfiguration

webrtc/p2p/base/p2ptransportchannel.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 24 matching lines @@
 #include "webrtc/p2p/base/portallocator.h"
 #include "webrtc/p2p/base/portinterface.h"
 
 namespace cricket {
 
 // Enum for UMA metrics, used to record whether the channel is
 // connected/connecting/disconnected when ICE restart happens.
 enum class IceRestartState { CONNECTING, CONNECTED, DISCONNECTED, MAX_VALUE };
 
 extern const int WEAK_PING_INTERVAL;
+extern const int STRONG_PING_INTERVAL;
 extern const int WEAK_OR_STABILIZING_WRITABLE_CONNECTION_PING_INTERVAL;
 extern const int STRONG_AND_STABLE_WRITABLE_CONNECTION_PING_INTERVAL;
 static const int MIN_PINGS_AT_WEAK_PING_INTERVAL = 3;
 
 // Adds the port on which the candidate originated.
 class RemoteCandidate : public Candidate {
  public:
   RemoteCandidate(const Candidate& c, PortInterface* origin_port)
       : Candidate(c), origin_port_(origin_port) {}
 
@@ skipping 100 matching lines @@
     return ss.str();
   }
 
  private:
   rtc::Thread* thread() const { return network_thread_; }
   bool IsGettingPorts() { return allocator_session()->IsGettingPorts(); }
 
   // A transport channel is weak if the current best connection is either
   // not receiving or not writable, or if there is no best connection at all.
   bool weak() const;
+
+  int weak_ping_interval() const {
+    if (config_.ice_check_min_interval &&
+        weak_ping_interval_ < *config_.ice_check_min_interval) {
+      return *config_.ice_check_min_interval;
+    }
+    return weak_ping_interval_;
+  }
+
+  int strong_ping_interval() const {
+    if (config_.ice_check_min_interval &&
+        STRONG_PING_INTERVAL < *config_.ice_check_min_interval) {
+      return *config_.ice_check_min_interval;
+    }
+    return STRONG_PING_INTERVAL;
+  }
+
   // Returns true if it's possible to send packets on |connection|.
   bool ReadyToSend(Connection* connection) const;
   void UpdateConnectionStates();
   void RequestSortAndStateUpdate();
   // Start pinging if we haven't already started, and we now have a connection
   // that's pingable.
   void MaybeStartPinging();
 
   // The methods below return a positive value if |a| is preferable to |b|,
   // a negative value if |b| is preferable, and 0 if they're equally preferable.
@@ skipping 192 matching lines @@
   bool writable_ = false;
 
   webrtc::MetricsObserverInterface* metrics_observer_ = nullptr;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(P2PTransportChannel);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_P2PTRANSPORTCHANNEL_H_