+ * Subscribes to a server's device presence change events.
+ *
+ * @param presenceHandle a handle object that can be used to identify this subscription
+ * request. It can be used to unsubscribe from these events in the future.
+ * It will be set upon successful return of this method.
+ * @param host The IP address/addressable name of the server to subscribe to.
+ * This should be in the format coap://address:port
+ * @param di Vector which can have the devices id.
+ * @param connectivityType ::OCConnectivityType type of connectivity indicating the
+ * interface. Example: CT_DEFAULT, CT_ADAPTER_IP, CT_ADAPTER_TCP.
+ * @param observeHandler handles callback
+ * The callback function will be invoked with a map of attribute name and values.
+ * The callback function will also have the result from this observe operation
+ * This will have error codes
+ *
+ * @return Returns ::OC_STACK_OK if success.
+ */
+ OCStackResult subscribeDevicePresence(OCPresenceHandle& presenceHandle,
+ const std::string& host,
+ const std::vector<std::string>& di,
+ OCConnectivityType connectivityType,
+ ObserveCallback callback);
+#endif
+
+ /**
+ * Creates a resource proxy object so that get/put/observe functionality
+ * can be used without discovering the object in advance. Note that the
+ * consumer of this method needs to provide all of the details required to
+ * correctly contact and observe the object. If the consumer lacks any of
+ * this information, they should discover the resource object normally.
+ * Additionally, you can only create this object if OCPlatform was initialized
+ * to be a Client or Client/Server. Otherwise, this will return an empty
+ * shared ptr.
+ *
+ * @param host a string containing a resolvable host address of the server
+ * holding the resource. Currently this should be in the format
+ * coap://address:port, though in the future, we expect this to
+ * change to //address:port
+ *
+ * @param uri the rest of the resource's URI that will permit messages to be
+ * properly routed. Example: /a/light
+ *
+ * @param connectivityType ::OCConnectivityType type of connectivity indicating the
+ * interface. Example: CT_DEFAULT, CT_ADAPTER_IP, CT_ADAPTER_TCP.
+ * if you want to use a specific Flag like IPv4,
+ * you should apply OR operation for the flag in here.
+ * Example: static_cast<OCConnectivityType>(CT_ADAPTER_TCP
+ * | OC_IP_USE_V4)
+ *
+ * @param isObservable a boolean containing whether the resource supports observation
+ *
+ * @param resourceTypes a collection of resource types implemented by the resource
+ *
+ * @param interfaces a collection of interfaces that the resource supports/implements
+ * @return OCResource::Ptr a shared pointer to the new resource object
+ */
+ OCResource::Ptr constructResourceObject(const std::string& host,
+ const std::string& uri,
+ OCConnectivityType connectivityType, bool isObservable,
+ const std::vector<std::string>& resourceTypes,
+ const std::vector<std::string>& interfaces);
+
+ /**
+ * Allows application entity handler to send response to an incoming request.
+ *
+ * @param pResponse OCResourceResponse pointer that will permit to set values related
+ * to resource response.
+ *
+ * @return Returns ::OC_STACK_OK if success.
+ */
+ OCStackResult sendResponse(const std::shared_ptr<OCResourceResponse> pResponse);
+
+ /**
+ * Find all the Direct Pairing capable devices.
+ *
+ * @param waittime timeoutbefore the callback is called
+ * @param callback function to callback with discovered devices after timeout
+ *
+ * @return Returns ::OC_STACK_OK if success
+ */
+ OCStackResult findDirectPairingDevices(unsigned short waittime,
+ GetDirectPairedCallback callback);
+
+ /**
+ * Get all the Direct paired devices.
+ *
+ * @param callback function to callback with the list of paired devices
+ *
+ * @return Returns ::OC_STACK_OK if success
+ */
+ OCStackResult getDirectPairedDevices(GetDirectPairedCallback callback);
+
+ /**
+ * Perform the Direct Pairing with the selected peer device
+ *
+ * @param peer device to direct pair with
+ * @param pmSel Selected pairing method
+ * @param pinNumber pin to validate peer & perform the direct pairing
+ * @param resultCallback callback function that will get the result of the operation
+ *
+ * @return Returns ::OC_STACK_OK if success
+ */
+ OCStackResult doDirectPairing(std::shared_ptr<OCDirectPairing> peer, OCPrm_t pmSel,
+ const std::string& pinNumber,
+ DirectPairingCallback resultCallback);
+#ifdef WITH_CLOUD
+ /**
+ * Create an account manager object that can be used for doing request to account server.
+ * You can only create this object if OCPlatform was initialized to be a Client or
+ * Client/Server. Otherwise, this will return an empty shared ptr.
+ *
+ * @note For now, OCPlatform SHOULD be initialized to be a Client/Server(Both) for the
+ * methods of this object to work since device id is not generated on Client mode.
+ *
+ * @param host Host IP Address of a account server.
+ * @param connectivityType ::OCConnectivityType type of connectivity indicating the
+ * interface. Example: CT_DEFAULT, CT_ADAPTER_IP, CT_ADAPTER_TCP.
+ * if you want to use a specific Flag like IPv4,
+ * you should apply OR operation for the flag in here.
+ * Example: static_cast<OCConnectivityType>(CT_ADAPTER_TCP
+ * | OC_IP_USE_V4)
+ *
+ * @return OCAccountManager::Ptr a shared pointer to the new account manager object
+ */
+ OCAccountManager::Ptr constructAccountManagerObject(const std::string& host,
+ OCConnectivityType connectivityType);
+#endif // WITH_CLOUD
+
+#ifdef TCP_ADAPTER
+ /**
+ * gets OCRepresentation of KeepAlive resource from given host.
+ *
+ * @param host Host IP Address of KeepAlive resource
+ * @param resultCallback Function to callback with result code and OCRepresentation.
+ * @return Returns ::OC_STACK_OK if success.
+ */
+ OCStackResult findKeepAliveResource(std::string host, KeepAliveCallback resultCallback);
+
+ /**
+ * send KeepAlive request to given host.