- * 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 - @ref OCConnectivityType type of connectivity indicating the
- * interface. Example: OC_WIFI, OC_ETHERNET, OC_ALL
- *
- * @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,
+ * 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,