1 //******************************************************************
3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
7 // Licensed under the Apache License, Version 2.0 (the "License");
8 // you may not use this file except in compliance with the License.
9 // You may obtain a copy of the License at
11 // http://www.apache.org/licenses/LICENSE-2.0
13 // Unless required by applicable law or agreed to in writing, software
14 // distributed under the License is distributed on an "AS IS" BASIS,
15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 // See the License for the specific language governing permissions and
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19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
25 #include "ocstackconfig.h"
31 //-----------------------------------------------------------------------------
33 //-----------------------------------------------------------------------------
35 //TODO: May want to refactor this in upcoming sprints.
36 //Don't want to expose to application layer that lower level stack is using CoAP.
38 /// Authority + URI string to prefix well known queries
39 #define OC_WELL_KNOWN_QUERY "224.0.1.187:5683/oc/core"
40 #define OC_EXPLICIT_DEVICE_DISCOVERY_URI "224.0.1.187:5683/oc/core/d?rt=core.led"
41 /// Multicast address and port string to prefix multicast queries
42 #define OC_MULTICAST_PREFIX "224.0.1.187:5683"
43 /// IP Multicast address to use for multicast requests
44 #define OC_MULTICAST_IP "224.0.1.187"
45 /// IP Multicast port to use for multicast requests
46 #define OC_MULTICAST_PORT 5683
49 #define OC_DEFAULT_PRESENCE_TTL (60)
50 #define OC_PRESENCE_URI "/oc/presence"
53 //-----------------------------------------------------------------------------
55 //-----------------------------------------------------------------------------
58 * Data structure to encapsulate IPv4/IPv6/Contiki/lwIP device addresses.
60 typedef struct OCDevAddr
62 uint32_t size; // length of the address stored in addr field.
63 uint8_t addr[DEV_ADDR_SIZE_MAX]; // device address.
67 * OC Virtual resources supported by every OC device.
71 OC_WELL_KNOWN_URI= 0, // "/oc/core"
72 OC_DEVICE_URI, // "/oc/core/d"
73 OC_RESOURCE_TYPES_URI, // "/oc/core/d/type"
75 OC_PRESENCE, // "/oc/presence"
77 OC_MAX_VIRTUAL_RESOURCES // Max items in the list
81 * Standard RESTful HTTP Methods.
86 OC_REST_GET = (1 << 0), // Read
87 OC_REST_PUT = (1 << 1), // Write
88 OC_REST_POST = (1 << 2), // Update
89 OC_REST_DELETE = (1 << 3), // Delete
90 // Register observe request for most up date notifications ONLY.
91 OC_REST_OBSERVE = (1 << 4),
92 // Register observe request for all notifications, including stale notifications.
93 OC_REST_OBSERVE_ALL = (1 << 5),
94 // Deregister observation, intended for internal use
95 OC_REST_CANCEL_OBSERVE = (1 << 6),
97 // Subscribe for all presence notifications of a particular resource.
98 OC_REST_PRESENCE = (1 << 7)
103 * Host Mode of Operation.
113 * Quality of Service.
120 OC_NA_QOS // No Quality is defined, let the stack decide
121 } OCQualityOfService;
124 * Resource Properties.
126 * ::OC_ACTIVE When this bit is set, the resource is initialized, otherwise the resource
127 * is 'inactive'. 'inactive' signifies that the resource has been marked for
128 * deletion or is already deleted.
129 * ::OC_DISCOVERABLE When this bit is set, the resource is allowed to be discovered by clients.
130 * ::OC_OBSERVABLE When this bit is set, the resource is allowed to be observed by clients.
131 * ::OC_SLOW When this bit is set, the resource has been marked as 'slow'. 'slow' signifies
132 * that responses from this resource can expect delays in processing its
133 * requests from clients.
134 * ::OC_SECURE When this bit is set, the resource is a secure resource.
138 OC_ACTIVE = (1 << 0),
139 OC_DISCOVERABLE = (1 << 1),
140 OC_OBSERVABLE = (1 << 2),
143 } OCResourceProperty;
146 * Transport Protocol IDs.
150 OC_INVALID_ID = (1 << 0),
151 OC_COAP_ID = (1 << 1)
152 } OCTransportProtocolID;
163 OC_ALL // Multicast message: send over all the interfaces.
164 } OCConnectivityType;
167 * Declares Stack Results & Errors.
171 /* Success status code - START HERE */
173 OC_STACK_RESOURCE_CREATED,
174 OC_STACK_RESOURCE_DELETED,
176 /* Success status code - END HERE */
177 /* Error status code - START HERE */
178 OC_STACK_INVALID_URI = 20,
179 OC_STACK_INVALID_QUERY,
181 OC_STACK_INVALID_PORT,
182 OC_STACK_INVALID_CALLBACK,
183 OC_STACK_INVALID_METHOD,
184 OC_STACK_INVALID_PARAM,
185 OC_STACK_INVALID_OBSERVE_PARAM,
189 OC_STACK_ADAPTER_NOT_ENABLED,
191 OC_STACK_NO_RESOURCE, /* resource not found */
192 OC_STACK_RESOURCE_ERROR, /* ex: not supported method or interface */
193 OC_STACK_SLOW_RESOURCE,
194 OC_STACK_DUPLICATE_REQUEST,
195 OC_STACK_NO_OBSERVERS, /* resource has no registered observers */
196 OC_STACK_OBSERVER_NOT_FOUND,
197 OC_STACK_VIRTUAL_DO_NOT_HANDLE,
198 OC_STACK_INVALID_OPTION,
199 OC_STACK_MALFORMED_RESPONSE, /* the remote reply contained malformed data */
200 OC_STACK_PERSISTENT_BUFFER_REQUIRED,
201 OC_STACK_INVALID_REQUEST_HANDLE,
202 OC_STACK_INVALID_DEVICE_INFO,
203 OC_STACK_INVALID_JSON,
204 /* NOTE: Insert all new error codes here!*/
206 OC_STACK_PRESENCE_STOPPED = 128,
207 OC_STACK_PRESENCE_TIMEOUT,
208 OC_STACK_PRESENCE_DO_NOT_HANDLE,
211 /* Error status code - END HERE */
215 * Handle to an @ref OCDoResource invocation.
217 typedef void * OCDoHandle;
220 * Handle to an OCResource object owned by the OCStack.
222 typedef void * OCResourceHandle;
224 typedef void * OCRequestHandle;
225 typedef void * OCResponseHandle;
228 * Unique identifier for each observation request. Used when observations are
229 * registered or deregistering. Used by entity handler to signal specific
230 * observers to be notified of resource changes.
231 * There can be maximum of 256 observations per server.
233 typedef uint8_t OCObservationId;
236 * Action associated with observation.
240 OC_OBSERVE_REGISTER = 0,
241 OC_OBSERVE_DEREGISTER = 1,
242 OC_OBSERVE_NO_OPTION = 2
247 // Action associated with observation request
248 OCObserveAction action;
249 // Identifier for observation being registered/deregistered
250 OCObservationId obsId;
254 * Possible returned values from entity handler.
260 OC_EH_RESOURCE_CREATED,
261 OC_EH_RESOURCE_DELETED,
264 OC_EH_RESOURCE_NOT_FOUND
265 } OCEntityHandlerResult;
268 * This structure will be used to define the vendor specific header options to be included
269 * in communication packets.
271 typedef struct OCHeaderOption
273 // The protocol ID this option applies to
274 OCTransportProtocolID protocolID;
275 // The header option ID which will be added to communication packets
278 uint16_t optionLength;
279 // pointer to its data
280 uint8_t optionData[MAX_HEADER_OPTION_DATA_LENGTH];
284 * Incoming requests handled by the server. Requests are passed in as a parameter to the
285 * @ref OCEntityHandler callback API.
286 * @brief The @ref OCEntityHandler callback API must be implemented in the application in order
287 * to receive these requests.
291 // Associated resource
292 OCResourceHandle resource;
293 OCRequestHandle requestHandle;
294 // the REST method retrieved from received request PDU
296 // resource query send by client
298 // Information associated with observation - valid only when OCEntityHandler
299 // flag includes OC_OBSERVE_FLAG
300 OCObservationInfo obsInfo;
301 // An array of the received vendor specific header options
302 uint8_t numRcvdVendorSpecificHeaderOptions;
303 OCHeaderOption * rcvdVendorSpecificHeaderOptions;
304 // reqJSON is retrieved from the payload of the received request PDU
305 char * reqJSONPayload;
306 } OCEntityHandlerRequest;
309 * Response from queries to remote servers. Queries are made by calling the @ref OCDoResource API.
313 // Address of remote server
315 // Indicates adaptor type on which the response was received
316 OCConnectivityType connType;
317 // the is the result of our stack, OCStackResult should contain coap/other error codes;
318 OCStackResult result;
319 // If associated with observe, this will represent the sequence of notifications from server.
320 uint32_t sequenceNumber;
321 // resJSONPayload is retrieved from the payload of the received request PDU
322 const char * resJSONPayload;
323 // An array of the received vendor specific header options
324 uint8_t numRcvdVendorSpecificHeaderOptions;
325 OCHeaderOption rcvdVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
329 * This structure describes the device properties. All non-Null properties will be included
330 * in a device discovery request.
339 char *manufacturerName;
340 char *manufacturerUrl;
342 char *dateOfManufacture;
343 char *platformVersion;
344 char *firmwareVersion;
350 // Request handle is passed to server via the entity handler for each incoming request.
351 // Stack assigns when request is received, server sets to indicate what request response is for
352 OCRequestHandle requestHandle;
353 // New handle for tracking block (or slow) response. Stack assigns, server uses for subsequent calls
354 OCResponseHandle *responseHandle;
356 OCResourceHandle resourceHandle;
357 // Allow the entity handler to pass a result with the response
358 OCEntityHandlerResult ehResult;
359 // this is the pointer to server payload data to be transferred
361 // size of server payload data. I don't think we should rely on null terminated data for size
362 uint16_t payloadSize;
363 // An array of the vendor specific header options the entity handler wishes to use in response
364 uint8_t numSendVendorSpecificHeaderOptions;
365 OCHeaderOption sendVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
366 // URI of new resource that entity handler might create
367 char resourceUri[MAX_URI_LENGTH];
368 // Server sets to true for persistent response buffer, false for non-persistent response buffer
369 uint8_t persistentBufferFlag;
370 } OCEntityHandlerResponse;
374 OC_INIT_FLAG = (1 << 0),
375 OC_REQUEST_FLAG = (1 << 1),
376 OC_OBSERVE_FLAG = (1 << 2)
377 } OCEntityHandlerFlag; //entity_handler_flag_t ;
380 * Possible returned values from client application.
384 OC_STACK_DELETE_TRANSACTION = 0,//!< OC_STACK_DELETE_TRANSACTION
385 OC_STACK_KEEP_TRANSACTION //!< OC_STACK_KEEP_TRANSACTION
386 } OCStackApplicationResult;
388 //-----------------------------------------------------------------------------
389 // Callback function definitions
390 //-----------------------------------------------------------------------------
393 * Client applications implement this callback to consume responses received from Servers.
395 typedef OCStackApplicationResult (* OCClientResponseHandler)(void *context, OCDoHandle handle,
396 OCClientResponse * clientResponse);
399 * Client applications using a context pointer implement this callback to delete the
400 * context upon removal of the callback/context pointer from the internal callback-list.
402 typedef void (* OCClientContextDeleter)(void *context);
405 * This info is passed from application to OC Stack when initiating a request to Server.
410 OCClientResponseHandler cb;
411 OCClientContextDeleter cd;
415 * Application server implementations must implement this callback to consume requests OTA.
416 * Entity handler callback needs to fill the resPayload of the entityHandlerRequest.
418 typedef OCEntityHandlerResult (*OCEntityHandler)
419 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest);
422 * Device Entity handler need to use this call back instead of OCEntityHandler.
424 typedef OCEntityHandlerResult (*OCDeviceEntityHandler)
425 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest, char* uri);
427 //-----------------------------------------------------------------------------
428 // Function prototypes
429 //-----------------------------------------------------------------------------
432 * Initialize the OC Stack. Must be called prior to starting the stack.
435 * IP Address of host device. Deprecated parameter.
437 * Port of host device. Deprecated parameter.
439 * Host device is client, server, or client-server.
441 * @return ::OC_STACK_OK on success, some other value upon failure.
443 OCStackResult OCInit(const char *ipAddr, uint16_t port, OCMode mode);
446 * Stop the OC stack. Use for a controlled shutdown.
448 * Note: OCStop() performs operations similar to OCStopPresence(), as well as OCDeleteResource() on
449 * all resources this server is hosting. OCDeleteResource() performs operations similar to
450 * OCNotifyAllObservers() to notify all client observers that the respective resource is being
453 * @return ::OC_STACK_OK on success, some other value upon failure.
455 OCStackResult OCStop();
458 * Called in main loop of OC client or server. Allows low-level processing of
461 * @return ::OC_STACK_OK on success, some other value upon failure.
463 OCStackResult OCProcess();
466 * Discover or Perform requests on a specified resource (specified by that Resource's respective
469 * @param handle @ref OCDoHandle to refer to the request sent out on behalf of
470 * calling this API. This handle can be used to cancel this operation
471 * via the OCCancel API.
472 * Note: This reference is handled internally, and
473 * should not be free'd by the consumer. A NULL handle is permitted
474 * in the event where the caller has no use for the return value.
475 * @param method @ref OCMethod to perform on the resource.
476 * @param requiredUri URI of the resource to interact with.
477 * @param referenceUri URI of the reference resource.
478 * @param request JSON encoded request.
479 * @param conType @ref OCConnectivityType type of connectivity indicating the
480 * interface. Example: ::OC_WIFI, ::OC_ETHERNET, ::OC_ALL.
481 * @param qos Quality of service. Note that if this API is called on a uri with
482 * the well-known multicast IP address, the qos will be forced to
484 * since it is impractical to send other QOS levels on such addresses.
485 * @param cbData Asynchronous callback function that is invoked
486 * by the stack when discovery or resource interaction is complete.
487 * @param options The address of an array containing the vendor specific
488 * header options to be sent with the request.
489 * @param numOptions Number of header options to be included.
491 * Note: Presence subscription amendments (ie. adding additional resource type filters by calling
492 * this API again) require the use of the same base URI as the original request to successfully
493 * amend the presence filters.
495 * @return ::OC_STACK_OK on success, some other value upon failure.
497 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri,
498 const char *referenceUri, const char *request, OCConnectivityType conType,
499 OCQualityOfService qos, OCCallbackData *cbData,
500 OCHeaderOption * options, uint8_t numOptions);
503 * Cancel a request associated with a specific @ref OCDoResource invocation.
505 * @param handle - Used to identify a specific OCDoResource invocation.
506 * @param qos - used to specify Quality of Service (read below for more info)
507 * @param options- used to specify vendor specific header options when sending
508 * explicit observe cancellation
509 * @param numOptions- Number of header options to be included
511 * @return ::OC_STACK_OK on success, some other value upon failure.
513 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
518 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
519 * presence notifications to clients via multicast. Once this API has been called with a success,
520 * clients may query for this server's presence and this server's stack will respond via multicast.
522 * Server can call this function when it comes online for the first time, or when it comes back
523 * online from offline mode, or when it re enters network.
525 * @param ttl Time To Live in seconds.
526 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
528 * @return ::OC_STACK_OK on success, some other value upon failure.
530 OCStackResult OCStartPresence(const uint32_t ttl);
533 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
534 * presence notifications to clients via multicast. Once this API has been called with a success,
535 * this server's stack will not respond to clients querying for this server's presence.
537 * Server can call this function when it is terminating, going offline, or when going
540 * @return ::OC_STACK_OK on success, some other value upon failure.
543 OCStackResult OCStopPresence();
548 * Set default device entity handler.
550 * @param entityHandler Entity handler function that is called by ocstack to handle requests for
551 * any undefined resources or default actions.
552 * If NULL is passed it removes the device default entity handler.
554 * @return ::OC_STACK_OK on success, some other value upon failure.
556 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler);
559 * Set device information.
561 * @param deviceInfo - Structure passed by the server application containing
562 * the device information.
566 * OC_STACK_OK - no errors
567 * OC_STACK_INVALID_PARAM - invalid paramerter
568 * OC_STACK_ERROR - stack process error
570 OCStackResult OCSetDeviceInfo(OCDeviceInfo deviceInfo);
575 * @param handle Pointer to handle to newly created resource. Set by ocstack and
576 * used to refer to resource.
577 * @param resourceTypeName Name of resource type. Example: "core.led".
578 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
579 * @param uri URI of the resource. Example: "/a/led".
580 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
581 * NULL for default entity handler.
582 * @param resourceProperties Properties supported by resource.
583 * Example: ::OC_DISCOVERABLE|::OC_OBSERVABLE.
585 * @return ::OC_STACK_OK on success, some other value upon failure.
587 OCStackResult OCCreateResource(OCResourceHandle *handle,
588 const char *resourceTypeName,
589 const char *resourceInterfaceName,
591 OCEntityHandler entityHandler,
592 uint8_t resourceProperties);
595 * Create a resource. with host ip address for remote resource.
597 * @param handle Pointer to handle to newly created resource. Set by ocstack.
598 * Used to refer to resource.
599 * @param resourceTypeName Name of resource type. Example: "core.led".
600 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
601 * @param host HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx".
602 * @param uri URI of the resource. Example: "/a/led".
603 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
604 * NULL for default entity handler.
605 * @param resourceProperties Properties supported by resource.
606 * Example: ::OC_DISCOVERABLE|::OC_OBSERVABLE
608 * @return ::OC_STACK_OK on success, some other value upon failure.
610 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
611 const char *resourceTypeName,
612 const char *resourceInterfaceName,
615 OCEntityHandler entityHandler,
616 uint8_t resourceProperties);
619 * Add a resource to a collection resource.
621 * @param collectionHandle Handle to the collection resource.
622 * @param resourceHandle Handle to resource to be added to the collection resource.
624 * @return ::OC_STACK_OK on success, some other value upon failure.
626 OCStackResult OCBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
629 * Remove a resource from a collection resource.
631 * @param collectionHandle Handle to the collection resource.
632 * @param resourceHandle Handle to resource to be removed from the collection resource.
634 * @return ::OC_STACK_OK on success, some other value upon failure.
636 OCStackResult OCUnBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
639 * Bind a resourcetype to a resource.
641 * @param handle Handle to the resource.
642 * @param resourceTypeName Name of resource type. Example: "core.led".
644 * @return ::OC_STACK_OK on success, some other value upon failure.
646 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
647 const char *resourceTypeName);
649 * Bind a resource interface to a resource.
651 * @param handle Handle to the resource.
652 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
654 * @return ::OC_STACK_OK on success, some other value upon failure.
656 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
657 const char *resourceInterfaceName);
660 * Bind an entity handler to the resource.
662 * @param handle Handle to the resource that the contained resource is to be bound.
663 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
664 * @return ::OC_STACK_OK on success, some other value upon failure.
666 OCStackResult OCBindResourceHandler(OCResourceHandle handle, OCEntityHandler entityHandler);
669 * Get the number of resources that have been created in the stack.
671 * @param numResources Pointer to count variable.
673 * @return ::OC_STACK_OK on success, some other value upon failure.
675 OCStackResult OCGetNumberOfResources(uint8_t *numResources);
678 * Get a resource handle by index.
680 * @param index Index of resource, 0 to Count - 1.
682 * @return Found resource handle or NULL if not found.
684 OCResourceHandle OCGetResourceHandle(uint8_t index);
687 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
690 * Note: OCDeleteResource() performs operations similar to OCNotifyAllObservers() to notify all
691 * client observers that "this" resource is being deleted.
693 * @param handle Handle of resource to be deleted.
695 * @return ::OC_STACK_OK on success, some other value upon failure.
697 OCStackResult OCDeleteResource(OCResourceHandle handle);
700 * Get the URI of the resource specified by handle.
702 * @param handle Handle of resource.
703 * @return URI string if resource found or NULL if not found.
705 const char *OCGetResourceUri(OCResourceHandle handle);
708 * Get the properties of the resource specified by handle.
709 * NOTE: that after a resource is created, the OC_ACTIVE property is set
710 * for the resource by the stack.
712 * @param handle Handle of resource.
713 * @return OCResourceProperty Bitmask or -1 if resource is not found.
715 OCResourceProperty OCGetResourceProperties(OCResourceHandle handle);
718 * Get the number of resource types of the resource.
720 * @param handle Handle of resource.
721 * @param numResourceTypes Pointer to count variable.
723 * @return ::OC_STACK_OK on success, some other value upon failure.
725 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle, uint8_t *numResourceTypes);
728 * Get name of resource type of the resource.
730 * @param handle Handle of resource.
731 * @param index Index of resource, 0 to Count - 1.
733 * @return Resource type name if resource found or NULL if resource not found.
735 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index);
738 * Get the number of resource interfaces of the resource.
740 * @param handle Handle of resource.
741 * @param numResourceInterfaces Pointer to count variable.
743 * @return ::OC_STACK_OK on success, some other value upon failure.
745 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
746 uint8_t *numResourceInterfaces);
749 * Get name of resource interface of the resource.
751 * @param handle Handle of resource.
752 * @param index Index of resource, 0 to Count - 1.
754 * @return Resource interface name if resource found or NULL if resource not found.
756 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index);
759 * Get methods of resource interface of the resource.
761 * @param handle Handle of resource.
762 * @param index Index of resource, 0 to Count - 1.
764 * @return Allowed methods if resource found or NULL if resource not found.
766 uint8_t OCGetResourceInterfaceAllowedMethods(OCResourceHandle handle, uint8_t index);
769 * Get resource handle from the collection resource by index.
771 * @param collectionHandle Handle of collection resource.
772 * @param index Index of contained resource, 0 to Count - 1.
774 * @return Handle to contained resource if resource found or NULL if resource not found.
776 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
780 * Get the entity handler for a resource.
782 * @param handle Handle of resource.
784 * @return Entity handler if resource found or NULL resource not found.
786 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle);
789 * Notify all registered observers that the resource representation has
790 * changed. If observation includes a query the client is notified only
791 * if the query is valid after the resource representation has changed.
793 * @param handle Handle of resource.
794 * @param qos Desired quality of service for the observation notifications.
796 * @return ::OC_STACK_OK on success, some other value upon failure.
798 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos);
801 * Notify specific observers with updated value of representation.
802 * Before this API is invoked by entity handler it has finished processing
803 * queries for the associated observers.
805 * @param handle Handle of resource.
806 * @param obsIdList List of observation ids that need to be notified.
807 * @param numberOfIds Number of observation ids included in obsIdList.
808 * @param notificationJSONPayload JSON encoded payload to send in notification.
809 * @param qos Desired quality of service of the observation notifications.
810 * NOTE: The memory for obsIdList and notificationJSONPayload is managed by the
811 * entity invoking the API. The maximum size of the notification is 1015 bytes
812 * for non-Arduino platforms. For Arduino the maximum size is 247 bytes.
814 * @return ::OC_STACK_OK on success, some other value upon failure.
817 OCNotifyListOfObservers (OCResourceHandle handle,
818 OCObservationId *obsIdList,
820 const char *notificationJSONPayload,
821 OCQualityOfService qos);
825 * Send a response to a request.
826 * The response can be a normal, slow, or block (i.e. a response that
827 * is too large to be sent in a single PDU and must span multiple transmissions).
829 * @param response Pointer to structure that contains response parameters.
831 * @return ::OC_STACK_OK on success, some other value upon failure.
833 OCStackResult OCDoResponse(OCEntityHandlerResponse *response);
836 * Cancel a response. Applies to a block response.
838 * @param responseHandle Response handle set by stack in OCServerResponse after
839 * OCDoResponse is called.
841 * @return ::OC_STACK_OK on success, some other value upon failure.
843 OCStackResult OCCancelResponse(OCResponseHandle responseHandle);
848 * This method is used to retrieved the IPv4 address from OCDev address
851 * @param ipAddr OCDevAddr address.
852 * @param a first byte of IPv4 address.
853 * @param b second byte of IPv4 address.
854 * @param c third byte of IPv4 address.
855 * @param d fourth byte of IPv4 address.
856 * @return ::OC_STACK_OK on success, some other value upon failure.
858 int32_t OCDevAddrToIPv4Addr(OCDevAddr *ipAddr, uint8_t *a, uint8_t *b,
859 uint8_t *c, uint8_t *d );
862 * This method is used to retrieve the port number from OCDev address
865 * @param ipAddr OCDevAddr address.
866 * @param port Port number.
867 * @return ::OC_STACK_OK on success, some other value upon failure.
869 int32_t OCDevAddrToPort(OCDevAddr *ipAddr, uint16_t *port);
873 #endif // __cplusplus
875 #endif /* OCSTACK_H_ */