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 #define OC_WELL_KNOWN_QUERY "224.0.1.187:5683/oc/core"
39 #define OC_EXPLICIT_DEVICE_DISCOVERY_URI "224.0.1.187:5683/oc/core/d?rt=core.led"
40 #define OC_MULTICAST_PREFIX "224.0.1.187:5683"
41 #define OC_MULTICAST_IP "224.0.1.187"
42 #define OC_MULTICAST_PORT 5683
45 #define OC_DEFAULT_PRESENCE_TTL (60)
46 #define OC_PRESENCE_URI "/oc/presence"
49 //-----------------------------------------------------------------------------
51 //-----------------------------------------------------------------------------
55 * Data structure to encapsulate IPv4/IPv6/Contiki/lwIP device addresses
58 typedef struct OCDevAddr
60 uint32_t size; /**< length of the address stored in addr field. */
61 uint8_t addr[DEV_ADDR_SIZE_MAX]; /**< device address. */
65 * OC Virtual resources supported by every OC device
69 OC_WELL_KNOWN_URI= 0, // "/oc/core"
70 OC_DEVICE_URI, // "/oc/core/d"
71 OC_RESOURCE_TYPES_URI, // "/oc/core/d/type"
73 OC_PRESENCE, // "/oc/presence"
75 OC_MAX_VIRTUAL_RESOURCES // Max items in the list
79 * Standard RESTful HTTP Methods
84 OC_REST_GET = (1 << 0), // Read
85 OC_REST_PUT = (1 << 1), // Write
86 OC_REST_POST = (1 << 2), // Update
87 OC_REST_DELETE = (1 << 3), // Delete
88 // Register observe request for most up date notifications ONLY.
89 OC_REST_OBSERVE = (1 << 4),
90 // Register observe request for all notifications, including stale notifications.
91 OC_REST_OBSERVE_ALL = (1 << 5),
92 // Deregister observation, intended for internal use
93 OC_REST_CANCEL_OBSERVE = (1 << 6),
95 // Subscribe for all presence notifications of a particular resource.
96 OC_REST_PRESENCE = (1 << 7)
101 * Host Mode of Operation
118 OC_NA_QOS // No Quality is defined, let the stack decide
119 } OCQualityOfService;
122 * Resource Properties
124 * OC_ACTIVE - When this bit is set, the resource is initialized, otherwise the resource
125 * is 'inactive'. 'inactive' signifies that the resource has been marked for
126 * deletion or is already deleted.
127 * OC_DISCOVERABLE - When this bit is set, the resource is allowed to be discovered by clients.
128 * OC_OBSERVABLE - When this bit is set, the resource is allowed to be observed by clients.
129 * OC_SLOW - When this bit is set, the resource has been marked as 'slow'. 'slow' signifies
130 * that responses from this resource can expect delays in processing its
131 * requests from clients.
132 * OC_SECURE - When this bit is set, the resource is a secure resource.
136 OC_ACTIVE = (1 << 0),
137 OC_DISCOVERABLE = (1 << 1),
138 OC_OBSERVABLE = (1 << 2),
141 } OCResourceProperty;
144 * Transport Protocol IDs
148 OC_INVALID_ID = (1 << 0),
149 OC_COAP_ID = (1 << 1)
150 } OCTransportProtocolID;
161 OC_ALL //Multicast message: send over all the interfaces.
162 } OCConnectivityType;
165 * Declares Stack Results & Errors
169 /* Success status code - START HERE */
171 OC_STACK_RESOURCE_CREATED,
172 OC_STACK_RESOURCE_DELETED,
174 /* Success status code - END HERE */
175 /* Error status code - START HERE */
176 OC_STACK_INVALID_URI = 20,
177 OC_STACK_INVALID_QUERY,
179 OC_STACK_INVALID_PORT,
180 OC_STACK_INVALID_CALLBACK,
181 OC_STACK_INVALID_METHOD,
182 OC_STACK_INVALID_PARAM,
183 OC_STACK_INVALID_OBSERVE_PARAM,
187 OC_STACK_ADAPTER_NOT_ENABLED,
189 OC_STACK_NO_RESOURCE, /* resource not found */
190 OC_STACK_RESOURCE_ERROR, /* ex: not supported method or interface */
191 OC_STACK_SLOW_RESOURCE,
192 OC_STACK_NO_OBSERVERS, /* resource has no registered observers */
193 OC_STACK_OBSERVER_NOT_FOUND,
194 OC_STACK_VIRTUAL_DO_NOT_HANDLE,
195 OC_STACK_INVALID_OPTION,
196 OC_STACK_MALFORMED_RESPONSE, /* the remote reply contained malformed data */
197 OC_STACK_PERSISTENT_BUFFER_REQUIRED,
198 OC_STACK_INVALID_REQUEST_HANDLE,
199 OC_STACK_INVALID_DEVICE_INFO,
200 OC_STACK_INVALID_JSON,
201 /* NOTE: Insert all new error codes here!*/
203 OC_STACK_PRESENCE_STOPPED = 128,
204 OC_STACK_PRESENCE_TIMEOUT,
205 OC_STACK_PRESENCE_DO_NOT_HANDLE,
208 /* Error status code - END HERE */
212 * Handle to an @ref OCDoResource invocation.
214 typedef void * OCDoHandle;
217 * Handle to an OCResource object owned by the OCStack.
219 typedef void * OCResourceHandle;
221 typedef void * OCRequestHandle;
222 typedef void * OCResponseHandle;
225 * Unique identifier for each observation request. Used when observations are
226 * registered or deregistering. Used by entity handler to signal specific
227 * observers to be notified of resource changes.
228 * There can be maximum of 256 observations per server.
230 typedef uint8_t OCObservationId;
233 * Action associated with observation
237 OC_OBSERVE_REGISTER = 0,
238 OC_OBSERVE_DEREGISTER = 1,
239 OC_OBSERVE_NO_OPTION = 2
244 // Action associated with observation request
245 OCObserveAction action;
246 // Identifier for observation being registered/deregistered
247 OCObservationId obsId;
251 * Possible returned values from entity handler
257 OC_EH_RESOURCE_CREATED,
258 OC_EH_RESOURCE_DELETED,
261 } OCEntityHandlerResult;
263 // following structure will be used to define the vendor specific header options to be included
264 // in communication packets
266 typedef struct OCHeaderOption
268 // The protocol ID this option applies to
269 OCTransportProtocolID protocolID;
270 // The header option ID which will be added to communication packets
273 uint16_t optionLength;
274 // pointer to its data
275 uint8_t optionData[MAX_HEADER_OPTION_DATA_LENGTH];
279 * Incoming requests handled by the server. Requests are passed in as a parameter to the
280 * @ref OCEntityHandler callback API.
281 * @brief The @ref OCEntityHandler callback API must be implemented in the application in order
282 * to receive these requests.
286 // Associated resource
287 OCResourceHandle resource;
288 OCRequestHandle requestHandle;
289 // the REST method retrieved from received request PDU
291 // resource query send by client
293 // Information associated with observation - valid only when OCEntityHandler
294 // flag includes OC_OBSERVE_FLAG
295 OCObservationInfo obsInfo;
296 // An array of the received vendor specific header options
297 uint8_t numRcvdVendorSpecificHeaderOptions;
298 OCHeaderOption * rcvdVendorSpecificHeaderOptions;
299 // reqJSON is retrieved from the payload of the received request PDU
300 char * reqJSONPayload;
301 } OCEntityHandlerRequest;
304 * Response from queries to remote servers. Queries are made by calling the @ref OCDoResource API.
308 // Address of remote server
310 // Indicates adaptor type on which the response was received
311 OCConnectivityType connType;
312 // the is the result of our stack, OCStackResult should contain coap/other error codes;
313 OCStackResult result;
314 // If associated with observe, this will represent the sequence of notifications from server.
315 uint32_t sequenceNumber;
316 // resJSONPayload is retrieved from the payload of the received request PDU
317 const char * resJSONPayload;
318 // An array of the received vendor specific header options
319 uint8_t numRcvdVendorSpecificHeaderOptions;
320 OCHeaderOption rcvdVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
324 * Following structure describes the device properties. All non-Null properties will be included
325 * in a device discovery request.
334 char *manufacturerName;
335 char *manufacturerUrl;
337 char *dateOfManufacture;
338 char *platformVersion;
339 char *firmwareVersion;
345 // Request handle is passed to server via the entity handler for each incoming request.
346 // Stack assigns when request is received, server sets to indicate what request response is for
347 OCRequestHandle requestHandle;
348 // New handle for tracking block (or slow) response. Stack assigns, server uses for subsequent calls
349 OCResponseHandle *responseHandle;
351 OCResourceHandle resourceHandle;
352 // Allow the entity handler to pass a result with the response
353 OCEntityHandlerResult ehResult;
354 // this is the pointer to server payload data to be transferred
356 // size of server payload data. I don't think we should rely on null terminated data for size
357 uint16_t payloadSize;
358 // An array of the vendor specific header options the entity handler wishes to use in response
359 uint8_t numSendVendorSpecificHeaderOptions;
360 OCHeaderOption sendVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
361 // URI of new resource that entity handler might create
362 char resourceUri[MAX_URI_LENGTH];
363 // Server sets to true for persistent response buffer, false for non-persistent response buffer
364 uint8_t persistentBufferFlag;
365 } OCEntityHandlerResponse;
369 OC_INIT_FLAG = (1 << 0),
370 OC_REQUEST_FLAG = (1 << 1),
371 OC_OBSERVE_FLAG = (1 << 2)
372 } OCEntityHandlerFlag; //entity_handler_flag_t ;
374 // possible returned values from client application
377 OC_STACK_DELETE_TRANSACTION = 0,
378 OC_STACK_KEEP_TRANSACTION
379 } OCStackApplicationResult;
381 //-----------------------------------------------------------------------------
382 // Callback function definitions
383 //-----------------------------------------------------------------------------
386 * Client applications implement this callback to consume responses received from Servers.
388 typedef OCStackApplicationResult (* OCClientResponseHandler)(void *context, OCDoHandle handle,
389 OCClientResponse * clientResponse);
392 * Client applications using a context pointer implement this callback to delete the
393 * context upon removal of the callback/context pointer from the internal callback-list
395 typedef void (* OCClientContextDeleter)(void *context);
398 * This info is passed from application to OC Stack when initiating a request to Server
403 OCClientResponseHandler cb;
404 OCClientContextDeleter cd;
408 * Application server implementations must implement this callback to consume requests OTA.
409 * Entity handler callback needs to fill the resPayload of the entityHandlerRequest.
411 typedef OCEntityHandlerResult (*OCEntityHandler)
412 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest);
415 * Device Entity handler need to use this call back instead of OCEntityHandler
417 typedef OCEntityHandlerResult (*OCDeviceEntityHandler)
418 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest, char* uri);
420 //-----------------------------------------------------------------------------
421 // Function prototypes
422 //-----------------------------------------------------------------------------
425 * Initialize the OC Stack. Must be called prior to starting the stack.
428 * IP Address of host device. Deprecated parameter.
430 * Port of host device. Deprecated parameter.
432 * Host device is client, server, or client-server
435 * OC_STACK_OK - no errors
436 * OC_STACK_ERROR - stack init error
438 OCStackResult OCInit(const char *ipAddr, uint16_t port, OCMode mode);
441 * Stop the OC stack. Use for a controlled shutdown.
443 * Note: OCStop() performs operations similar to OCStopPresence(), as well as OCDeleteResource() on
444 * all resources this server is hosting. OCDeleteResource() performs operations similar to
445 * OCNotifyAllObservers() to notify all client observers that the respective resource is being
449 * OC_STACK_OK - no errors
450 * OC_STACK_ERROR - stack not initialized
452 OCStackResult OCStop();
455 * Called in main loop of OC client or server. Allows low-level processing of
459 * OC_STACK_OK - no errors
460 * OC_STACK_ERROR - stack process error
462 OCStackResult OCProcess();
465 * Discover or Perform requests on a specified resource (specified by that Resource's respective
468 * @param handle - @ref OCDoHandle to refer to the request sent out on behalf of
469 * calling this API. This handle can be used to cancel this operation
470 * via the OCCancel API.
471 * Note: This reference is handled internally, and
472 * should not be free'd by the consumer. A NULL handle is permitted
473 * in the event where the caller has no use for the return value.
474 * @param method - @ref OCMethod to perform on the resource
475 * @param requiredUri - URI of the resource to interact with
476 * @param referenceUri - URI of the reference resource
477 * @param request - JSON encoded request
478 * @param conType - @ref OCConnectivityType type of connectivity indicating the
479 * interface. Example: OC_WIFI, OC_ETHERNET, OC_ALL
480 * @param qos - quality of service. Note that if this API is called on a uri with
481 * the well-known multicast IP address, the qos will be forced to
483 * since it is impractical to send other QOS levels on such addresses.
484 * @param cbData - asynchronous callback function that is invoked
485 * by the stack when discovery or resource interaction is complete
486 * @param options - The address of an array containing the vendor specific
487 * header options to be sent with the request
488 * @param numOptions - Number of header options to be included
490 * Note: Presence subscription amendments (ie. adding additional resource type filters by calling
491 * this API again) require the use of the same base URI as the original request to successfully
492 * amend the presence filters.
495 * OC_STACK_OK - no errors
496 * OC_STACK_INVALID_CALLBACK - invalid callback function pointer
497 * OC_STACK_INVALID_METHOD - invalid resource method
498 * OC_STACK_INVALID_URI - invalid required or reference URI
499 * OC_STACK_INVALID_QUERY - number of resource types specified for filtering presence
500 * notifications exceeds @ref MAX_PRESENCE_FILTERS.
502 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri,
503 const char *referenceUri, const char *request, OCConnectivityType conType,
504 OCQualityOfService qos, OCCallbackData *cbData,
505 OCHeaderOption * options, uint8_t numOptions);
508 * Cancel a request associated with a specific @ref OCDoResource invocation.
510 * @param handle - Used to identify a specific OCDoResource invocation.
511 * @param qos - used to specify Quality of Service (read below for more info)
512 * @param options- used to specify vendor specific header options when sending
513 * explicit observe cancellation
514 * @param numOptions- Number of header options to be included
517 * OC_STACK_OK - No errors; Success
518 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
520 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
525 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
526 * presence notifications to clients via multicast. Once this API has been called with a success,
527 * clients may query for this server's presence and this server's stack will respond via multicast.
529 * Server can call this function when it comes online for the first time, or when it comes back
530 * online from offline mode, or when it re enters network.
532 * @param ttl - Time To Live in seconds
533 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
536 * OC_STACK_OK - No errors; Success
538 OCStackResult OCStartPresence(const uint32_t ttl);
541 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
542 * presence notifications to clients via multicast. Once this API has been called with a success,
543 * this server's stack will not respond to clients querying for this server's presence.
545 * Server can call this function when it is terminating, going offline, or when going
549 * OC_STACK_OK - No errors; Success
552 OCStackResult OCStopPresence();
557 * Set default device entity handler
559 * @param entityHandler - entity handler function that is called by ocstack to handle requests for
560 * any undefined resources or default actions.
561 * if NULL is passed it removes the device default entity handler.
564 * OC_STACK_OK - no errors
565 * OC_STACK_ERROR - stack process error
567 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler);
570 * Set device information.
572 * @param deviceInfo - Structure passed by the server application containing
573 * the device information.
577 * OC_STACK_OK - no errors
578 * OC_STACK_INVALID_PARAM - invalid paramerter
579 * OC_STACK_ERROR - stack process error
581 OCStackResult OCSetDeviceInfo(OCDeviceInfo deviceInfo);
586 * @param handle - pointer to handle to newly created resource. Set by ocstack. Used to refer to resource
587 * @param resourceTypeName - name of resource type. Example: "core.led"
588 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
589 * @param uri - URI of the resource. Example: "/a/led"
590 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
591 * NULL for default entity handler
592 * @param resourceProperties - properties supported by resource. Example: OC_DISCOVERABLE|OC_OBSERVABLE
595 * OC_STACK_OK - no errors
596 * OC_STACK_ERROR - stack process error
598 OCStackResult OCCreateResource(OCResourceHandle *handle,
599 const char *resourceTypeName,
600 const char *resourceInterfaceName,
602 OCEntityHandler entityHandler,
603 uint8_t resourceProperties);
606 * Create a resource. with host ip address for remote resource
608 * @param handle - pointer to handle to newly created resource. Set by ocstack.
609 * Used to refer to resource
610 * @param resourceTypeName - name of resource type. Example: "core.led"
611 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
612 * @param host - HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx"
613 * @param uri - URI of the resource. Example: "/a/led"
614 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
615 * NULL for default entity handler
616 * @param resourceProperties - properties supported by resource.
617 * Example: OC_DISCOVERABLE|OC_OBSERVABLE
620 * OC_STACK_OK - no errors
621 * OC_STACK_ERROR - stack process error
623 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
624 const char *resourceTypeName,
625 const char *resourceInterfaceName,
628 OCEntityHandler entityHandler,
629 uint8_t resourceProperties);
632 * Add a resource to a collection resource.
634 * @param collectionHandle - handle to the collection resource
635 * @param resourceHandle - handle to resource to be added to the collection resource
638 * OC_STACK_OK - no errors
639 * OC_STACK_ERROR - stack process error
640 * OC_STACK_INVALID_PARAM - invalid collectionhandle
642 OCStackResult OCBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
645 * Remove a resource from a collection resource.
647 * @param collectionHandle - handle to the collection resource
648 * @param resourceHandle - handle to resource to be removed from the collection resource
651 * OC_STACK_OK - no errors
652 * OC_STACK_ERROR - stack process error
653 * OC_STACK_INVALID_PARAM - invalid collectionhandle
655 OCStackResult OCUnBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
658 * Bind a resourcetype to a resource.
660 * @param handle - handle to the resource
661 * @param resourceTypeName - name of resource type. Example: "core.led"
664 * OC_STACK_OK - no errors
665 * OC_STACK_ERROR - stack process error
667 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
668 const char *resourceTypeName);
670 * Bind a resource interface to a resource.
672 * @param handle - handle to the resource
673 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
676 * OC_STACK_OK - no errors
677 * OC_STACK_ERROR - stack process error
679 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
680 const char *resourceInterfaceName);
683 * Bind an entity handler to the resource.
685 * @param handle - handle to the resource that the contained resource is to be bound
686 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
688 * OC_STACK_OK - no errors
689 * OC_STACK_ERROR - stack process error
691 OCStackResult OCBindResourceHandler(OCResourceHandle handle, OCEntityHandler entityHandler);
694 * Get the number of resources that have been created in the stack.
696 * @param numResources - pointer to count variable
699 * OC_STACK_OK - no errors
700 * OC_STACK_ERROR - stack process error
703 OCStackResult OCGetNumberOfResources(uint8_t *numResources);
706 * Get a resource handle by index.
708 * @param index - index of resource, 0 to Count - 1
711 * Resource handle - if found
712 * NULL - if not found
714 OCResourceHandle OCGetResourceHandle(uint8_t index);
717 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
720 * Note: OCDeleteResource() performs operations similar to OCNotifyAllObservers() to notify all
721 * client observers that "this" resource is being deleted.
723 * @param handle - handle of resource to be deleted
726 * OC_STACK_OK - no errors
727 * OC_STACK_ERROR - stack process error
729 OCStackResult OCDeleteResource(OCResourceHandle handle);
732 * Get the URI of the resource specified by handle.
734 * @param handle - handle of resource
736 * URI string - if resource found
737 * NULL - resource not found
739 const char *OCGetResourceUri(OCResourceHandle handle);
742 * Get the properties of the resource specified by handle.
743 * NOTE: that after a resource is created, the OC_ACTIVE property is set
744 * for the resource by the stack.
746 * @param handle - handle of resource
748 * OCResourceProperty Bitmask
749 * -1 if resource is not found
751 OCResourceProperty OCGetResourceProperties(OCResourceHandle handle);
754 * Get the number of resource types of the resource.
756 * @param handle - handle of resource
757 * @param numResourceTypes - pointer to count variable
760 * OC_STACK_OK - no errors
761 * OC_STACK_ERROR - stack process error
763 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle, uint8_t *numResourceTypes);
766 * Get name of resource type of the resource.
768 * @param handle - handle of resource
769 * @param index - index of resource, 0 to Count - 1
772 * resource type name - if resource found
773 * NULL - resource not found
775 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index);
778 * Get the number of resource interfaces of the resource.
780 * @param handle - handle of resource
781 * @param numResourceInterfaces - pointer to count variable
784 * OC_STACK_OK - no errors
785 * OC_STACK_ERROR - stack process error
788 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
789 uint8_t *numResourceInterfaces);
792 * Get name of resource interface of the resource.
794 * @param handle - handle of resource
795 * @param index - index of resource, 0 to Count - 1
798 * resource interface name - if resource found
799 * NULL - resource not found
801 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index);
804 * Get methods of resource interface of the resource.
806 * @param handle - handle of resource
807 * @param index - index of resource, 0 to Count - 1
810 * allowed methods - if resource found
811 * NULL - resource not found
813 uint8_t OCGetResourceInterfaceAllowedMethods(OCResourceHandle handle, uint8_t index);
816 * Get resource handle from the collection resource by index.
818 * @param collectionHandle - handle of collection resource
819 * @param index - index of contained resource, 0 to Count - 1
822 * handle to contained resource - if resource found
823 * NULL - resource not found
825 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
829 * Get the entity handler for a resource.
831 * @param handle - handle of resource
834 * entity handler - if resource found
835 * NULL - resource not found
837 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle);
840 * Notify all registered observers that the resource representation has
841 * changed. If observation includes a query the client is notified only
842 * if the query is valid after the resource representation has changed.
844 * @param handle - handle of resource
845 * @param qos - desired quality of service for the observation notifications
848 * OC_STACK_OK - no errors
849 * OC_STACK_NO_RESOURCE - invalid resource handle
850 * OC_STACK_NO_OBSERVERS - no more observers intrested in resource
852 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos);
855 * Notify specific observers with updated value of representation.
856 * Before this API is invoked by entity handler it has finished processing
857 * queries for the associated observers.
859 * @param handle - handle of resource
860 * @param obsIdList - list of observation ids that need to be notified
861 * @param numberOfIds - number of observation ids included in obsIdList
862 * @param notificationJSONPayload - JSON encoded payload to send in notification
863 * @param qos - desired quality of service of the observation notifications
864 * NOTE: The memory for obsIdList and notificationJSONPayload is managed by the
865 * entity invoking the API. The maximum size of the notification is 1015 bytes
866 * for non-Arduino platforms. For Arduino the maximum size is 247 bytes.
869 * OC_STACK_OK - no errors
870 * OC_STACK_NO_RESOURCE - invalid resource handle
873 OCNotifyListOfObservers (OCResourceHandle handle,
874 OCObservationId *obsIdList,
876 const char *notificationJSONPayload,
877 OCQualityOfService qos);
881 * Send a response to a request.
882 * The response can be a normal, slow, or block (i.e. a response that
883 * is too large to be sent in a single PDU and must span multiple transmissions)
885 * @param response - pointer to structure that contains response parameters
888 * OC_STACK_OK - no errors
890 OCStackResult OCDoResponse(OCEntityHandlerResponse *response);
893 * Cancel a response. Applies to a block response
895 * @param responseHandle - response handle set by stack in OCServerResponse after
896 * OCDoResponse is called
899 * OC_STACK_OK - No errors; Success
900 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
902 OCStackResult OCCancelResponse(OCResponseHandle responseHandle);
906 //-- OCDevAddrToIPv4Addr -------------------------------------------------
908 * This method is used to retrieved the IPv4 address from OCDev address
913 * @param[out] a first byte of IPv4 address.
914 * @param[out] b second byte of IPv4 address.
915 * @param[out] c third byte of IPv4 address.
916 * @param[out] d fourth byte of IPv4 address.
918 * @retval 0 for Success, otherwise some error value
920 //------------------------------------------------------------------------
921 int32_t OCDevAddrToIPv4Addr(OCDevAddr *ipAddr, uint8_t *a, uint8_t *b,
922 uint8_t *c, uint8_t *d );
925 //-- OCDevAddrToPort -------------------------------------------------
927 * This method is used to retrieve the port number from OCDev address
935 * @retval 0 for Success, otherwise some error value
937 //------------------------------------------------------------------------
938 int32_t OCDevAddrToPort(OCDevAddr *ipAddr, uint16_t *port);
942 #endif // __cplusplus
944 #endif /* OCSTACK_H_ */