Wire up RTP keep-alive in ortc api.

webrtc/api/ortc/rtptransportinterface.h

Index: webrtc/api/ortc/rtptransportinterface.h
diff --git a/webrtc/api/ortc/rtptransportinterface.h b/webrtc/api/ortc/rtptransportinterface.h
index 119d662edde283815170dbab234103ea8c763f7b..d673c503d385d4e9b2f5b8d2729834f3934896d8 100644
--- a/webrtc/api/ortc/rtptransportinterface.h
+++ b/webrtc/api/ortc/rtptransportinterface.h
@@ -15,13 +15,14 @@
 
 #include "webrtc/api/ortc/packettransportinterface.h"
 #include "webrtc/api/rtcerror.h"
+#include "webrtc/common_types.h"
 #include "webrtc/rtc_base/optional.h"
 
 namespace webrtc {
 
 class RtpTransportAdapter;
 
-struct RtcpParameters {
+struct RtcpParameters final {
   // The SSRC to be used in the "SSRC of packet sender" field. If not set, one
   // will be chosen by the implementation.
   // TODO(deadbeef): Not implemented.
@@ -51,6 +52,19 @@ struct RtcpParameters {
   bool operator!=(const RtcpParameters& o) const { return !(*this == o); }
 };
 
+struct RtpTransportParameters final {
+  // Enabled periodic sending of keep-alive packets, that help prevent timeouts
+  // on the network level, such as NAT bindings. See RFC6263 section 4.6.
+  RtpKeepAliveConfig keepalive;
+
+  bool operator==(const RtpTransportParameters& o) const {
+    return keepalive == o.keepalive;
+  }
+  bool operator!=(const RtpTransportParameters& o) const {
+    return !(*this == o);
+  }
+};
+
 // Base class for different types of RTP transports that can be created by an
 // OrtcFactory. Used by RtpSenders/RtpReceivers.
 //
@@ -85,6 +99,10 @@ class RtpTransportInterface {
   // parameters (see above).
   virtual RtcpParameters GetRtcpParameters() const = 0;
 
+  virtual RTCError SetRtpTransportParameters(
+      const RtpTransportParameters& parameters) = 0;
+  virtual RtpTransportParameters GetRtpTransportParameters() const = 0;
+
  protected:
   // Only for internal use. Returns a pointer to an internal interface, for use
   // by the implementation.