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
17 // limitations under the License.
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.
37 #define OC_WELL_KNOWN_QUERY "coap://224.0.1.187:5683/oc/core"
38 #define OC_EXPLICIT_DEVICE_DISCOVERY_URI "coap://224.0.1.187:5683/oc/core?rt=core.led"
39 #define OC_MULTICAST_PREFIX "coap://224.0.1.187:5683"
40 #define OC_MULTICAST_IP "coap://224.0.1.187"
42 #define USE_RANDOM_PORT (0)
44 #define OC_DEFAULT_PRESENCE_TTL (60)
45 #define OC_PRESENCE_URI "/oc/presence"
46 extern uint8_t PresenceTimeOutSize; // length of PresenceTimeOut - 1
47 extern uint32_t PresenceTimeOut[];
49 //-----------------------------------------------------------------------------
51 //-----------------------------------------------------------------------------
54 * OC Virtual resources supported by every OC device
57 OC_WELL_KNOWN_URI= 0, // "/oc/core"
58 OC_DEVICE_URI, // "/oc/core/d"
59 OC_RESOURCE_TYPES_URI, // "/oc/core/d/type"
61 OC_PRESENCE, // "/oc/presence"
63 OC_MAX_VIRTUAL_RESOURCES // Max items in the list
67 * Standard RESTful HTTP Methods
71 OC_REST_GET = (1 << 0), // Read
72 OC_REST_PUT = (1 << 1), // Write
73 OC_REST_POST = (1 << 2), // Update
74 OC_REST_DELETE = (1 << 3), // Delete
75 // Register observe request for most up date notifications ONLY.
76 OC_REST_OBSERVE = (1 << 4),
77 // Register observe request for all notifications, including stale notifications.
78 OC_REST_OBSERVE_ALL = (1 << 5),
79 // Deregister observation, intended for internal use
80 OC_REST_CANCEL_OBSERVE = (1 << 6),
82 // Subscribe for all presence notifications of a particular resource.
83 OC_REST_PRESENCE = (1 << 7)
88 * Host Mode of Operation
96 extern OCMode myStackMode;
104 OC_NA_QOS // No Quality is defined, let the stack decide
105 } OCQualityOfService;
108 * Resource Properties
110 * OC_ACTIVE - When this bit is set, the resource is initialized, otherwise the resource
111 * is 'inactive'. 'inactive' signifies that the resource has been marked for
112 * deletion or is already deleted.
113 * OC_DISCOVERABLE - When this bit is set, the resource is allowed to be discovered by clients.
114 * OC_OBSERVABLE - When this bit is set, the resource is allowed to be observed by clients.
115 * OC_SLOW - When this bit is set, the resource has been marked as 'slow'. 'slow' signifies
116 * that responses from this resource can expect delays in processing its
117 * requests from clients.
118 * OC_SECURE - When this bit is set, the resource is a secure resource.
121 OC_ACTIVE = (1 << 0),
122 OC_DISCOVERABLE = (1 << 1),
123 OC_OBSERVABLE = (1 << 2),
126 } OCResourceProperty;
129 * Transport Protocol IDs
132 OC_INVALID_ID = (1 << 0),
133 OC_COAP_ID = (1 << 1)
134 } OCTransportProtocolID;
137 * Declares Stack Results & Errors
140 /* Success status code - START HERE */
142 OC_STACK_RESOURCE_CREATED,
143 OC_STACK_RESOURCE_DELETED,
145 /* Success status code - END HERE */
146 /* Error status code - START HERE */
147 OC_STACK_INVALID_URI,
148 OC_STACK_INVALID_QUERY,
150 OC_STACK_INVALID_PORT,
151 OC_STACK_INVALID_CALLBACK,
152 OC_STACK_INVALID_METHOD,
153 OC_STACK_INVALID_PARAM,
154 OC_STACK_INVALID_OBSERVE_PARAM,
158 OC_STACK_NO_RESOURCE, /* resource not found */
159 OC_STACK_RESOURCE_ERROR, /* ex: not supported method or interface */
160 OC_STACK_SLOW_RESOURCE,
161 OC_STACK_NO_OBSERVERS, /* resource has no registered observers */
162 OC_STACK_OBSERVER_NOT_FOUND,
164 OC_STACK_PRESENCE_STOPPED,
165 OC_STACK_PRESENCE_TIMEOUT,
166 OC_STACK_PRESENCE_DO_NOT_HANDLE,
168 OC_STACK_VIRTUAL_DO_NOT_HANDLE,
169 OC_STACK_INVALID_OPTION,
170 OC_STACK_MALFORMED_RESPONSE, /* the remote reply contained malformed data */
171 OC_STACK_PERSISTENT_BUFFER_REQUIRED,
172 OC_STACK_INVALID_REQUEST_HANDLE,
173 OC_STACK_INVALID_DEVICE_INFO,
175 /* Error status code - END HERE */
179 * Handle to an @ref OCDoResource invocation.
181 typedef void * OCDoHandle;
184 * Handle to an OCResource object owned by the OCStack.
186 typedef void * OCResourceHandle;
188 typedef void * OCRequestHandle;
189 typedef void * OCResponseHandle;
192 * Unique identifier for each observation request. Used when observations are
193 * registered or deregistering. Used by entity handler to signal specific
194 * observers to be notified of resource changes.
195 * There can be maximum of 256 observations per server.
197 typedef uint8_t OCObservationId;
200 * Action associated with observation
203 OC_OBSERVE_REGISTER = 0,
204 OC_OBSERVE_DEREGISTER = 1,
205 OC_OBSERVE_NO_OPTION = 2
209 // Action associated with observation request
210 OCObserveAction action;
211 // Identifier for observation being registered/deregistered
212 OCObservationId obsId;
216 * Possible returned values from entity handler
221 OC_EH_RESOURCE_CREATED,
222 OC_EH_RESOURCE_DELETED,
225 } OCEntityHandlerResult;
227 // following structure will be used to define the vendor specific header options to be included
228 // in communication packets
230 typedef struct OCHeaderOption {
231 // The protocol ID this option applies to
232 OCTransportProtocolID protocolID;
233 // The header option ID which will be added to communication packets
236 uint16_t optionLength;
237 // pointer to its data
238 uint8_t optionData[MAX_HEADER_OPTION_DATA_LENGTH];
242 * Incoming requests handled by the server. Requests are passed in as a parameter to the @ref OCEntityHandler callback API.
243 * @brief The @ref OCEntityHandler callback API must be implemented in the application in order to receive these requests.
246 // Associated resource
247 OCResourceHandle resource;
248 OCRequestHandle requestHandle;
249 // the REST method retrieved from received request PDU
251 // resource query send by client
252 unsigned char * query;
253 // Information associated with observation - valid only when OCEntityHandler
254 // flag includes OC_OBSERVE_FLAG
255 OCObservationInfo obsInfo;
256 // An array of the received vendor specific header options
257 uint8_t numRcvdVendorSpecificHeaderOptions;
258 OCHeaderOption * rcvdVendorSpecificHeaderOptions;
259 // reqJSON is retrieved from the payload of the received request PDU
260 unsigned char * reqJSONPayload;
261 }OCEntityHandlerRequest;
264 * Response from queries to remote servers. Queries are made by calling the @ref OCDoResource API.
267 // Address of remote server
269 // the is the result of our stack, OCStackResult should contain coap/other error codes;
270 OCStackResult result;
271 // If associated with observe, this will represent the sequence of notifications from server.
272 uint32_t sequenceNumber;
273 // resJSONPayload is retrieved from the payload of the received request PDU
274 unsigned const char * resJSONPayload;
275 // An array of the received vendor specific header options
276 uint8_t numRcvdVendorSpecificHeaderOptions;
277 OCHeaderOption rcvdVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
281 * Following structure describes the device properties. All non-Null properties will be included
282 * in a device discovery request.
291 char *manufacturerName;
292 char *manufacturerUrl;
294 char *dateOfManufacture;
295 char *platformVersion;
296 char *firmwareVersion;
302 // Request handle is passed to server via the entity handler for each incoming request.
303 // Stack assigns when request is received, server sets to indicate what request response is for
304 OCRequestHandle requestHandle;
305 // New handle for tracking block (or slow) response. Stack assigns, server uses for subsequent calls
306 OCResponseHandle *responseHandle;
308 OCResourceHandle resourceHandle;
309 // Allow the entity handler to pass a result with the response
310 OCEntityHandlerResult ehResult;
311 // this is the pointer to server payload data to be transferred
312 unsigned char *payload;
313 // size of server payload data. I don't think we should rely on null terminated data for size
314 uint16_t payloadSize;
315 // An array of the vendor specific header options the entity handler wishes to use in response
316 uint8_t numSendVendorSpecificHeaderOptions;
317 OCHeaderOption sendVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
318 // URI of new resource that entity handler might create
319 unsigned char resourceUri[MAX_URI_LENGTH];
320 // Server sets to true for persistent response buffer, false for non-persistent response buffer
321 uint8_t persistentBufferFlag;
322 } OCEntityHandlerResponse;
325 OC_INIT_FLAG = (1 << 0),
326 OC_REQUEST_FLAG = (1 << 1),
327 OC_OBSERVE_FLAG = (1 << 2)
328 } OCEntityHandlerFlag; //entity_handler_flag_t ;
330 // possible returned values from client application
332 OC_STACK_DELETE_TRANSACTION = 0,
333 OC_STACK_KEEP_TRANSACTION
334 } OCStackApplicationResult;
336 //-----------------------------------------------------------------------------
337 // Callback function definitions
338 //-----------------------------------------------------------------------------
341 * Client applications implement this callback to consume responses received from Servers.
343 typedef OCStackApplicationResult (* OCClientResponseHandler)(void *context, OCDoHandle handle,
344 OCClientResponse * clientResponse);
347 * Client applications using a context pointer implement this callback to delete the
348 * context upon removal of the callback/context pointer from the internal callback-list
350 typedef void (* OCClientContextDeleter)(void *context);
353 * This info is passed from application to OC Stack when initiating a request to Server
357 OCClientResponseHandler cb;
358 OCClientContextDeleter cd;
362 * Application server implementations must implement this callback to consume requests OTA.
363 * Entity handler callback needs to fill the resPayload of the entityHandlerRequest.
365 typedef OCEntityHandlerResult (*OCEntityHandler)
366 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest);
369 * Device Entity handler need to use this call back instead of OCEntityHandler
371 typedef OCEntityHandlerResult (*OCDeviceEntityHandler)
372 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest, char* uri);
374 //-----------------------------------------------------------------------------
375 // Function prototypes
376 //-----------------------------------------------------------------------------
379 * Initialize the OC Stack. Must be called prior to starting the stack.
382 * IP Address of host device
384 * Port of host device
386 * Host device is client, server, or client-server
389 * OC_STACK_OK - no errors
390 * OC_STACK_ERROR - stack init error
392 OCStackResult OCInit(const char *ipAddr, uint16_t port, OCMode mode);
395 * Stop the OC stack. Use for a controlled shutdown.
397 * Note: OCStop() performs operations similar to OCStopPresence(), as well as OCDeleteResource() on
398 * all resources this server is hosting. OCDeleteResource() performs operations similar to
399 * OCNotifyAllObservers() to notify all client observers that the respective resource is being
403 * OC_STACK_OK - no errors
404 * OC_STACK_ERROR - stack not initialized
406 OCStackResult OCStop();
409 * Called in main loop of OC client or server. Allows low-level processing of
413 * OC_STACK_OK - no errors
414 * OC_STACK_ERROR - stack process error
416 OCStackResult OCProcess();
419 * Discover or Perform requests on a specified resource (specified by that Resource's respective
422 * @param handle - @ref OCDoHandle to refer to the request sent out on behalf of
424 * @param method - @ref OCMethod to perform on the resource
425 * @param requiredUri - URI of the resource to interact with
426 * @param referenceUri - URI of the reference resource
427 * @param request - JSON encoded request
428 * @param qos - quality of service. Note that if this API is called on a uri with
429 * the well-known multicast IP address, the qos will be forced to
431 * since it is impractical to send other QOS levels on such addresses.
432 * @param clientApplicationCB- asynchronous callback function that is invoked
433 * by the stack when discovery or resource interaction is complete
434 * @param options - The address of an array containing the vendor specific
435 * header options to be sent with the request
436 * @param numOptions - Number of header options to be included
438 * Note: Presence subscription amendments (ie. adding additional resource type filters by calling
439 * this API again) require the use of the same base URI as the original request to successfully
440 * amend the presence filters.
443 * OC_STACK_OK - no errors
444 * OC_STACK_INVALID_CALLBACK - invalid callback function pointer
445 * OC_STACK_INVALID_METHOD - invalid resource method
446 * OC_STACK_INVALID_URI - invalid required or reference URI
447 * OC_STACK_INVALID_QUERY - number of resource types specified for filtering presence
448 * notifications exceeds @ref MAX_PRESENCE_FILTERS.
450 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri, const char *referenceUri,
451 const char *request, OCQualityOfService qos, OCCallbackData *cbData, OCHeaderOption * options,
455 * Cancel a request associated with a specific @ref OCDoResource invocation.
457 * @param handle - Used to identify a specific OCDoResource invocation.
458 * @param qos - used to specify Quality of Service (read below for more info)
459 * @param options- used to specify vendor specific header options when sending
460 * explicit observe cancellation
461 * @param numOptions- Number of header options to be included
464 * OC_STACK_OK - No errors; Success
465 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
467 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
472 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
473 * presence notifications to clients via multicast. Once this API has been called with a success,
474 * clients may query for this server's presence and this server's stack will respond via multicast.
476 * Server can call this function when it comes online for the first time, or when it comes back
477 * online from offline mode, or when it re enters network.
479 * @param ttl - Time To Live in seconds
480 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
483 * OC_STACK_OK - No errors; Success
485 OCStackResult OCStartPresence(const uint32_t ttl);
488 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
489 * presence notifications to clients via multicast. Once this API has been called with a success,
490 * this server's stack will not respond to clients querying for this server's presence.
492 * Server can call this function when it is terminating, going offline, or when going
496 * OC_STACK_OK - No errors; Success
499 OCStackResult OCStopPresence();
504 * Set default device entity handler
506 * @param entityHandler - entity handler function that is called by ocstack to handle requests for
507 * any undefined resources or default actions.
508 * if NULL is passed it removes the device default entity handler.
511 * OC_STACK_OK - no errors
512 * OC_STACK_ERROR - stack process error
514 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler);
517 * Set device information.
519 * @param deviceInfo - Structure passed by the server application containing
520 * the device information.
524 * OC_STACK_OK - no errors
525 * OC_STACK_INVALID_PARAM - invalid paramerter
526 * OC_STACK_ERROR - stack process error
528 OCStackResult OCSetDeviceInfo(OCDeviceInfo deviceInfo);
533 * @param handle - pointer to handle to newly created resource. Set by ocstack. Used to refer to resource
534 * @param resourceTypeName - name of resource type. Example: "core.led"
535 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
536 * @param uri - URI of the resource. Example: "/a/led"
537 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
538 * NULL for default entity handler
539 * @param resourceProperties - properties supported by resource. Example: OC_DISCOVERABLE|OC_OBSERVABLE
542 * OC_STACK_OK - no errors
543 * OC_STACK_ERROR - stack process error
545 OCStackResult OCCreateResource(OCResourceHandle *handle,
546 const char *resourceTypeName,
547 const char *resourceInterfaceName,
549 OCEntityHandler entityHandler,
550 uint8_t resourceProperties);
553 * Create a resource. with host ip address for remote resource
555 * @param handle - pointer to handle to newly created resource. Set by ocstack.
556 * Used to refer to resource
557 * @param resourceTypeName - name of resource type. Example: "core.led"
558 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
559 * @param host - HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx"
560 * @param uri - URI of the resource. Example: "/a/led"
561 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
562 * NULL for default entity handler
563 * @param resourceProperties - properties supported by resource.
564 * Example: OC_DISCOVERABLE|OC_OBSERVABLE
567 * OC_STACK_OK - no errors
568 * OC_STACK_ERROR - stack process error
570 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
571 const char *resourceTypeName,
572 const char *resourceInterfaceName,
575 OCEntityHandler entityHandler,
576 uint8_t resourceProperties);
579 * Add a resource to a collection resource.
581 * @param collectionHandle - handle to the collection resource
582 * @param resourceHandle - handle to resource to be added to the collection resource
585 * OC_STACK_OK - no errors
586 * OC_STACK_ERROR - stack process error
587 * OC_STACK_INVALID_PARAM - invalid collectionhandle
589 OCStackResult OCBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
592 * Remove a resource from a collection resource.
594 * @param collectionHandle - handle to the collection resource
595 * @param resourceHandle - handle to resource to be removed from the collection resource
598 * OC_STACK_OK - no errors
599 * OC_STACK_ERROR - stack process error
600 * OC_STACK_INVALID_PARAM - invalid collectionhandle
602 OCStackResult OCUnBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
605 * Bind a resourcetype to a resource.
607 * @param handle - handle to the resource
608 * @param resourceTypeName - name of resource type. Example: "core.led"
611 * OC_STACK_OK - no errors
612 * OC_STACK_ERROR - stack process error
614 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
615 const char *resourceTypeName);
617 * Bind a resource interface to a resource.
619 * @param handle - handle to the resource
620 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
623 * OC_STACK_OK - no errors
624 * OC_STACK_ERROR - stack process error
626 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
627 const char *resourceInterfaceName);
630 * Bind an entity handler to the resource.
632 * @param handle - handle to the resource that the contained resource is to be bound
633 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
635 * OC_STACK_OK - no errors
636 * OC_STACK_ERROR - stack process error
638 OCStackResult OCBindResourceHandler(OCResourceHandle handle, OCEntityHandler entityHandler);
641 * Get the number of resources that have been created in the stack.
643 * @param numResources - pointer to count variable
646 * OC_STACK_OK - no errors
647 * OC_STACK_ERROR - stack process error
650 OCStackResult OCGetNumberOfResources(uint8_t *numResources);
653 * Get a resource handle by index.
655 * @param index - index of resource, 0 to Count - 1
658 * Resource handle - if found
659 * NULL - if not found
661 OCResourceHandle OCGetResourceHandle(uint8_t index);
664 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
667 * Note: OCDeleteResource() performs operations similar to OCNotifyAllObservers() to notify all
668 * client observers that "this" resource is being deleted.
670 * @param handle - handle of resource to be deleted
673 * OC_STACK_OK - no errors
674 * OC_STACK_ERROR - stack process error
676 OCStackResult OCDeleteResource(OCResourceHandle handle);
679 * Get the URI of the resource specified by handle.
681 * @param handle - handle of resource
683 * URI string - if resource found
684 * NULL - resource not found
686 const char *OCGetResourceUri(OCResourceHandle handle);
689 * Get the properties of the resource specified by handle.
690 * NOTE: that after a resource is created, the OC_ACTIVE property is set
691 * for the resource by the stack.
693 * @param handle - handle of resource
695 * property bitmap - if resource found
696 * NULL - resource not found
698 uint8_t OCGetResourceProperties(OCResourceHandle handle);
701 * Get the number of resource types of the resource.
703 * @param handle - handle of resource
704 * @param numResourceTypes - pointer to count variable
707 * OC_STACK_OK - no errors
708 * OC_STACK_ERROR - stack process error
710 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle, uint8_t *numResourceTypes);
713 * Get name of resource type of the resource.
715 * @param handle - handle of resource
716 * @param index - index of resource, 0 to Count - 1
719 * resource type name - if resource found
720 * NULL - resource not found
722 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index);
725 * Get the number of resource interfaces of the resource.
727 * @param handle - handle of resource
728 * @param numResources - pointer to count variable
731 * OC_STACK_OK - no errors
732 * OC_STACK_ERROR - stack process error
735 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle, uint8_t *numResourceInterfaces);
738 * Get name of resource interface of the resource.
740 * @param handle - handle of resource
741 * @param index - index of resource, 0 to Count - 1
744 * resource interface name - if resource found
745 * NULL - resource not found
747 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index);
750 * Get methods of resource interface of the resource.
752 * @param handle - handle of resource
753 * @param index - index of resource, 0 to Count - 1
756 * allowed methods - if resource found
757 * NULL - resource not found
759 uint8_t OCGetResourceInterfaceAllowedMethods(OCResourceHandle handle, uint8_t index);
762 * Get resource handle from the collection resource by index.
764 * @param collectionHandle - handle of collection resource
765 * @param index - index of contained resource, 0 to Count - 1
768 * handle to contained resource - if resource found
769 * NULL - resource not found
771 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle, uint8_t index);
774 * Get the entity handler for a resource.
776 * @param handle - handle of resource
779 * entity handler - if resource found
780 * NULL - resource not found
782 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle);
785 * Notify all registered observers that the resource representation has
786 * changed. If observation includes a query the client is notified only
787 * if the query is valid after the resource representation has changed.
789 * @param handle - handle of resource
792 * OC_STACK_OK - no errors
793 * OC_STACK_NO_RESOURCE - invalid resource handle
794 * OC_STACK_NO_OBSERVERS - no more observers intrested in resource
796 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos);
799 * Notify specific observers with updated value of representation.
800 * Before this API is invoked by entity handler it has finished processing
801 * queries for the associated observers.
803 * @param handle - handle of resource
804 * @param obsIdList - list of observation ids that need to be notified
805 * @param numberOfIds - number of observation ids included in obsIdList
806 * @param notificationJSONPayload - JSON encoded payload to send in notification
807 * @param qos - desired quality of service of the observation notifications
808 * NOTE: The memory for obsIdList and notificationJSONPayload is managed by the
809 * entity invoking the API. The maximum size of the notification is 1015 bytes
810 * for non-Arduino platforms. For Arduino the maximum size is 247 bytes.
813 * OC_STACK_OK - no errors
814 * OC_STACK_NO_RESOURCE - invalid resource handle
817 OCNotifyListOfObservers (OCResourceHandle handle,
818 OCObservationId *obsIdList,
820 unsigned 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
832 * OC_STACK_OK - no errors
834 OCStackResult OCDoResponse(OCEntityHandlerResponse *response);
837 * Cancel a response. Applies to a block response
839 * @param responseHandle - response handle set by stack in OCServerResponse after
840 * OCDoResponse is called
843 * OC_STACK_OK - No errors; Success
844 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
846 OCStackResult OCCancelResponse(OCResponseHandle responseHandle);
851 #endif // __cplusplus
853 #endif /* OCSTACK_H_ */