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"
44 #define OC_DEFAULT_PRESENCE_TTL (60)
45 #define OC_PRESENCE_URI "/oc/presence"
48 //-----------------------------------------------------------------------------
50 //-----------------------------------------------------------------------------
54 * Data structure to encapsulate IPv4/IPv6/Contiki/lwIP device addresses
57 typedef struct OCDevAddr
59 uint32_t size; /**< length of the address stored in addr field. */
60 uint8_t addr[DEV_ADDR_SIZE_MAX]; /**< device address. */
64 * OC Virtual resources supported by every OC device
68 OC_WELL_KNOWN_URI= 0, // "/oc/core"
69 OC_DEVICE_URI, // "/oc/core/d"
70 OC_RESOURCE_TYPES_URI, // "/oc/core/d/type"
72 OC_PRESENCE, // "/oc/presence"
74 OC_MAX_VIRTUAL_RESOURCES // Max items in the list
78 * Standard RESTful HTTP Methods
83 OC_REST_GET = (1 << 0), // Read
84 OC_REST_PUT = (1 << 1), // Write
85 OC_REST_POST = (1 << 2), // Update
86 OC_REST_DELETE = (1 << 3), // Delete
87 // Register observe request for most up date notifications ONLY.
88 OC_REST_OBSERVE = (1 << 4),
89 // Register observe request for all notifications, including stale notifications.
90 OC_REST_OBSERVE_ALL = (1 << 5),
91 // Deregister observation, intended for internal use
92 OC_REST_CANCEL_OBSERVE = (1 << 6),
94 // Subscribe for all presence notifications of a particular resource.
95 OC_REST_PRESENCE = (1 << 7)
100 * Host Mode of Operation
117 OC_NA_QOS // No Quality is defined, let the stack decide
118 } OCQualityOfService;
121 * Resource Properties
123 * OC_ACTIVE - When this bit is set, the resource is initialized, otherwise the resource
124 * is 'inactive'. 'inactive' signifies that the resource has been marked for
125 * deletion or is already deleted.
126 * OC_DISCOVERABLE - When this bit is set, the resource is allowed to be discovered by clients.
127 * OC_OBSERVABLE - When this bit is set, the resource is allowed to be observed by clients.
128 * OC_SLOW - When this bit is set, the resource has been marked as 'slow'. 'slow' signifies
129 * that responses from this resource can expect delays in processing its
130 * requests from clients.
131 * OC_SECURE - When this bit is set, the resource is a secure resource.
135 OC_ACTIVE = (1 << 0),
136 OC_DISCOVERABLE = (1 << 1),
137 OC_OBSERVABLE = (1 << 2),
140 } OCResourceProperty;
143 * Transport Protocol IDs
147 OC_INVALID_ID = (1 << 0),
148 OC_COAP_ID = (1 << 1)
149 } OCTransportProtocolID;
160 OC_ALL //Multicast message: send over all the interfaces.
161 } OCConnectivityType;
164 * Declares Stack Results & Errors
168 /* Success status code - START HERE */
170 OC_STACK_RESOURCE_CREATED,
171 OC_STACK_RESOURCE_DELETED,
173 /* Success status code - END HERE */
174 /* Error status code - START HERE */
175 OC_STACK_INVALID_URI = 20,
176 OC_STACK_INVALID_QUERY,
178 OC_STACK_INVALID_PORT,
179 OC_STACK_INVALID_CALLBACK,
180 OC_STACK_INVALID_METHOD,
181 OC_STACK_INVALID_PARAM,
182 OC_STACK_INVALID_OBSERVE_PARAM,
186 OC_STACK_ADAPTER_NOT_ENABLED,
188 OC_STACK_NO_RESOURCE, /* resource not found */
189 OC_STACK_RESOURCE_ERROR, /* ex: not supported method or interface */
190 OC_STACK_SLOW_RESOURCE,
191 OC_STACK_NO_OBSERVERS, /* resource has no registered observers */
192 OC_STACK_OBSERVER_NOT_FOUND,
193 OC_STACK_VIRTUAL_DO_NOT_HANDLE,
194 OC_STACK_INVALID_OPTION,
195 OC_STACK_MALFORMED_RESPONSE, /* the remote reply contained malformed data */
196 OC_STACK_PERSISTENT_BUFFER_REQUIRED,
197 OC_STACK_INVALID_REQUEST_HANDLE,
198 OC_STACK_INVALID_DEVICE_INFO,
199 OC_STACK_INVALID_JSON,
200 /* NOTE: Insert all new error codes here!*/
202 OC_STACK_PRESENCE_STOPPED = 128,
203 OC_STACK_PRESENCE_TIMEOUT,
204 OC_STACK_PRESENCE_DO_NOT_HANDLE,
207 /* Error status code - END HERE */
211 * Handle to an @ref OCDoResource invocation.
213 typedef void * OCDoHandle;
216 * Handle to an OCResource object owned by the OCStack.
218 typedef void * OCResourceHandle;
220 typedef void * OCRequestHandle;
221 typedef void * OCResponseHandle;
224 * Unique identifier for each observation request. Used when observations are
225 * registered or deregistering. Used by entity handler to signal specific
226 * observers to be notified of resource changes.
227 * There can be maximum of 256 observations per server.
229 typedef uint8_t OCObservationId;
232 * Action associated with observation
236 OC_OBSERVE_REGISTER = 0,
237 OC_OBSERVE_DEREGISTER = 1,
238 OC_OBSERVE_NO_OPTION = 2
243 // Action associated with observation request
244 OCObserveAction action;
245 // Identifier for observation being registered/deregistered
246 OCObservationId obsId;
250 * Possible returned values from entity handler
256 OC_EH_RESOURCE_CREATED,
257 OC_EH_RESOURCE_DELETED,
260 } OCEntityHandlerResult;
262 // following structure will be used to define the vendor specific header options to be included
263 // in communication packets
265 typedef struct OCHeaderOption
267 // The protocol ID this option applies to
268 OCTransportProtocolID protocolID;
269 // The header option ID which will be added to communication packets
272 uint16_t optionLength;
273 // pointer to its data
274 uint8_t optionData[MAX_HEADER_OPTION_DATA_LENGTH];
278 * Incoming requests handled by the server. Requests are passed in as a parameter to the
279 * @ref OCEntityHandler callback API.
280 * @brief The @ref OCEntityHandler callback API must be implemented in the application in order
281 * to receive these requests.
285 // Associated resource
286 OCResourceHandle resource;
287 OCRequestHandle requestHandle;
288 // the REST method retrieved from received request PDU
290 // resource query send by client
292 // Information associated with observation - valid only when OCEntityHandler
293 // flag includes OC_OBSERVE_FLAG
294 OCObservationInfo obsInfo;
295 // An array of the received vendor specific header options
296 uint8_t numRcvdVendorSpecificHeaderOptions;
297 OCHeaderOption * rcvdVendorSpecificHeaderOptions;
298 // reqJSON is retrieved from the payload of the received request PDU
299 char * reqJSONPayload;
300 } OCEntityHandlerRequest;
303 * Response from queries to remote servers. Queries are made by calling the @ref OCDoResource API.
307 // Address of remote server
309 // Indicates adaptor type on which the response was received
310 OCConnectivityType connType;
311 // the is the result of our stack, OCStackResult should contain coap/other error codes;
312 OCStackResult result;
313 // If associated with observe, this will represent the sequence of notifications from server.
314 uint32_t sequenceNumber;
315 // resJSONPayload is retrieved from the payload of the received request PDU
316 const char * resJSONPayload;
317 // An array of the received vendor specific header options
318 uint8_t numRcvdVendorSpecificHeaderOptions;
319 OCHeaderOption rcvdVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
323 * Following structure describes the device properties. All non-Null properties will be included
324 * in a device discovery request.
333 char *manufacturerName;
334 char *manufacturerUrl;
336 char *dateOfManufacture;
337 char *platformVersion;
338 char *firmwareVersion;
344 // Request handle is passed to server via the entity handler for each incoming request.
345 // Stack assigns when request is received, server sets to indicate what request response is for
346 OCRequestHandle requestHandle;
347 // New handle for tracking block (or slow) response. Stack assigns, server uses for subsequent calls
348 OCResponseHandle *responseHandle;
350 OCResourceHandle resourceHandle;
351 // Allow the entity handler to pass a result with the response
352 OCEntityHandlerResult ehResult;
353 // this is the pointer to server payload data to be transferred
355 // size of server payload data. I don't think we should rely on null terminated data for size
356 uint16_t payloadSize;
357 // An array of the vendor specific header options the entity handler wishes to use in response
358 uint8_t numSendVendorSpecificHeaderOptions;
359 OCHeaderOption sendVendorSpecificHeaderOptions[MAX_HEADER_OPTIONS];
360 // URI of new resource that entity handler might create
361 char resourceUri[MAX_URI_LENGTH];
362 // Server sets to true for persistent response buffer, false for non-persistent response buffer
363 uint8_t persistentBufferFlag;
364 } OCEntityHandlerResponse;
368 OC_INIT_FLAG = (1 << 0),
369 OC_REQUEST_FLAG = (1 << 1),
370 OC_OBSERVE_FLAG = (1 << 2)
371 } OCEntityHandlerFlag; //entity_handler_flag_t ;
373 // possible returned values from client application
376 OC_STACK_DELETE_TRANSACTION = 0,
377 OC_STACK_KEEP_TRANSACTION
378 } OCStackApplicationResult;
380 //-----------------------------------------------------------------------------
381 // Callback function definitions
382 //-----------------------------------------------------------------------------
385 * Client applications implement this callback to consume responses received from Servers.
387 typedef OCStackApplicationResult (* OCClientResponseHandler)(void *context, OCDoHandle handle,
388 OCClientResponse * clientResponse);
391 * Client applications using a context pointer implement this callback to delete the
392 * context upon removal of the callback/context pointer from the internal callback-list
394 typedef void (* OCClientContextDeleter)(void *context);
397 * This info is passed from application to OC Stack when initiating a request to Server
402 OCClientResponseHandler cb;
403 OCClientContextDeleter cd;
407 * Application server implementations must implement this callback to consume requests OTA.
408 * Entity handler callback needs to fill the resPayload of the entityHandlerRequest.
410 typedef OCEntityHandlerResult (*OCEntityHandler)
411 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest);
414 * Device Entity handler need to use this call back instead of OCEntityHandler
416 typedef OCEntityHandlerResult (*OCDeviceEntityHandler)
417 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest, char* uri);
419 //-----------------------------------------------------------------------------
420 // Function prototypes
421 //-----------------------------------------------------------------------------
424 * Initialize the OC Stack. Must be called prior to starting the stack.
427 * IP Address of host device. Deprecated parameter.
429 * Port of host device. Deprecated parameter.
431 * Host device is client, server, or client-server
434 * OC_STACK_OK - no errors
435 * OC_STACK_ERROR - stack init error
437 OCStackResult OCInit(const char *ipAddr, uint16_t port, OCMode mode);
440 * Stop the OC stack. Use for a controlled shutdown.
442 * Note: OCStop() performs operations similar to OCStopPresence(), as well as OCDeleteResource() on
443 * all resources this server is hosting. OCDeleteResource() performs operations similar to
444 * OCNotifyAllObservers() to notify all client observers that the respective resource is being
448 * OC_STACK_OK - no errors
449 * OC_STACK_ERROR - stack not initialized
451 OCStackResult OCStop();
454 * Called in main loop of OC client or server. Allows low-level processing of
458 * OC_STACK_OK - no errors
459 * OC_STACK_ERROR - stack process error
461 OCStackResult OCProcess();
464 * Discover or Perform requests on a specified resource (specified by that Resource's respective
467 * @param handle - @ref OCDoHandle to refer to the request sent out on behalf of
468 * calling this API. This handle can be used to cancel this operation
469 * via the OCCancel API.
470 * Note: This reference is handled internally, and
471 * should not be free'd by the consumer. A NULL handle is permitted
472 * in the event where the caller has no use for the return value.
473 * @param method - @ref OCMethod to perform on the resource
474 * @param requiredUri - URI of the resource to interact with
475 * @param referenceUri - URI of the reference resource
476 * @param request - JSON encoded request
477 * @param conType - @ref OCConnectivityType type of connectivity indicating the
478 * interface. Example: OC_WIFI, OC_ETHERNET, OC_ALL
479 * @param qos - quality of service. Note that if this API is called on a uri with
480 * the well-known multicast IP address, the qos will be forced to
482 * since it is impractical to send other QOS levels on such addresses.
483 * @param cbData - asynchronous callback function that is invoked
484 * by the stack when discovery or resource interaction is complete
485 * @param options - The address of an array containing the vendor specific
486 * header options to be sent with the request
487 * @param numOptions - Number of header options to be included
489 * Note: Presence subscription amendments (ie. adding additional resource type filters by calling
490 * this API again) require the use of the same base URI as the original request to successfully
491 * amend the presence filters.
494 * OC_STACK_OK - no errors
495 * OC_STACK_INVALID_CALLBACK - invalid callback function pointer
496 * OC_STACK_INVALID_METHOD - invalid resource method
497 * OC_STACK_INVALID_URI - invalid required or reference URI
498 * OC_STACK_INVALID_QUERY - number of resource types specified for filtering presence
499 * notifications exceeds @ref MAX_PRESENCE_FILTERS.
501 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri,
502 const char *referenceUri, const char *request, OCConnectivityType conType,
503 OCQualityOfService qos, OCCallbackData *cbData,
504 OCHeaderOption * options, uint8_t numOptions);
507 * Cancel a request associated with a specific @ref OCDoResource invocation.
509 * @param handle - Used to identify a specific OCDoResource invocation.
510 * @param qos - used to specify Quality of Service (read below for more info)
511 * @param options- used to specify vendor specific header options when sending
512 * explicit observe cancellation
513 * @param numOptions- Number of header options to be included
516 * OC_STACK_OK - No errors; Success
517 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
519 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
524 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
525 * presence notifications to clients via multicast. Once this API has been called with a success,
526 * clients may query for this server's presence and this server's stack will respond via multicast.
528 * Server can call this function when it comes online for the first time, or when it comes back
529 * online from offline mode, or when it re enters network.
531 * @param ttl - Time To Live in seconds
532 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
535 * OC_STACK_OK - No errors; Success
537 OCStackResult OCStartPresence(const uint32_t ttl);
540 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
541 * presence notifications to clients via multicast. Once this API has been called with a success,
542 * this server's stack will not respond to clients querying for this server's presence.
544 * Server can call this function when it is terminating, going offline, or when going
548 * OC_STACK_OK - No errors; Success
551 OCStackResult OCStopPresence();
556 * Set default device entity handler
558 * @param entityHandler - entity handler function that is called by ocstack to handle requests for
559 * any undefined resources or default actions.
560 * if NULL is passed it removes the device default entity handler.
563 * OC_STACK_OK - no errors
564 * OC_STACK_ERROR - stack process error
566 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler);
569 * Set device information.
571 * @param deviceInfo - Structure passed by the server application containing
572 * the device information.
576 * OC_STACK_OK - no errors
577 * OC_STACK_INVALID_PARAM - invalid paramerter
578 * OC_STACK_ERROR - stack process error
580 OCStackResult OCSetDeviceInfo(OCDeviceInfo deviceInfo);
585 * @param handle - pointer to handle to newly created resource. Set by ocstack. Used to refer to resource
586 * @param resourceTypeName - name of resource type. Example: "core.led"
587 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
588 * @param uri - URI of the resource. Example: "/a/led"
589 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
590 * NULL for default entity handler
591 * @param resourceProperties - properties supported by resource. Example: OC_DISCOVERABLE|OC_OBSERVABLE
594 * OC_STACK_OK - no errors
595 * OC_STACK_ERROR - stack process error
597 OCStackResult OCCreateResource(OCResourceHandle *handle,
598 const char *resourceTypeName,
599 const char *resourceInterfaceName,
601 OCEntityHandler entityHandler,
602 uint8_t resourceProperties);
605 * Create a resource. with host ip address for remote resource
607 * @param handle - pointer to handle to newly created resource. Set by ocstack.
608 * Used to refer to resource
609 * @param resourceTypeName - name of resource type. Example: "core.led"
610 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
611 * @param host - HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx"
612 * @param uri - URI of the resource. Example: "/a/led"
613 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
614 * NULL for default entity handler
615 * @param resourceProperties - properties supported by resource.
616 * Example: OC_DISCOVERABLE|OC_OBSERVABLE
619 * OC_STACK_OK - no errors
620 * OC_STACK_ERROR - stack process error
622 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
623 const char *resourceTypeName,
624 const char *resourceInterfaceName,
627 OCEntityHandler entityHandler,
628 uint8_t resourceProperties);
631 * Add a resource to a collection resource.
633 * @param collectionHandle - handle to the collection resource
634 * @param resourceHandle - handle to resource to be added to the collection resource
637 * OC_STACK_OK - no errors
638 * OC_STACK_ERROR - stack process error
639 * OC_STACK_INVALID_PARAM - invalid collectionhandle
641 OCStackResult OCBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
644 * Remove a resource from a collection resource.
646 * @param collectionHandle - handle to the collection resource
647 * @param resourceHandle - handle to resource to be removed from the collection resource
650 * OC_STACK_OK - no errors
651 * OC_STACK_ERROR - stack process error
652 * OC_STACK_INVALID_PARAM - invalid collectionhandle
654 OCStackResult OCUnBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
657 * Bind a resourcetype to a resource.
659 * @param handle - handle to the resource
660 * @param resourceTypeName - name of resource type. Example: "core.led"
663 * OC_STACK_OK - no errors
664 * OC_STACK_ERROR - stack process error
666 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
667 const char *resourceTypeName);
669 * Bind a resource interface to a resource.
671 * @param handle - handle to the resource
672 * @param resourceInterfaceName - name of resource interface. Example: "core.rw"
675 * OC_STACK_OK - no errors
676 * OC_STACK_ERROR - stack process error
678 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
679 const char *resourceInterfaceName);
682 * Bind an entity handler to the resource.
684 * @param handle - handle to the resource that the contained resource is to be bound
685 * @param entityHandler - entity handler function that is called by ocstack to handle requests, etc
687 * OC_STACK_OK - no errors
688 * OC_STACK_ERROR - stack process error
690 OCStackResult OCBindResourceHandler(OCResourceHandle handle, OCEntityHandler entityHandler);
693 * Get the number of resources that have been created in the stack.
695 * @param numResources - pointer to count variable
698 * OC_STACK_OK - no errors
699 * OC_STACK_ERROR - stack process error
702 OCStackResult OCGetNumberOfResources(uint8_t *numResources);
705 * Get a resource handle by index.
707 * @param index - index of resource, 0 to Count - 1
710 * Resource handle - if found
711 * NULL - if not found
713 OCResourceHandle OCGetResourceHandle(uint8_t index);
716 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
719 * Note: OCDeleteResource() performs operations similar to OCNotifyAllObservers() to notify all
720 * client observers that "this" resource is being deleted.
722 * @param handle - handle of resource to be deleted
725 * OC_STACK_OK - no errors
726 * OC_STACK_ERROR - stack process error
728 OCStackResult OCDeleteResource(OCResourceHandle handle);
731 * Get the URI of the resource specified by handle.
733 * @param handle - handle of resource
735 * URI string - if resource found
736 * NULL - resource not found
738 const char *OCGetResourceUri(OCResourceHandle handle);
741 * Get the properties of the resource specified by handle.
742 * NOTE: that after a resource is created, the OC_ACTIVE property is set
743 * for the resource by the stack.
745 * @param handle - handle of resource
747 * OCResourceProperty Bitmask
748 * -1 if resource is not found
750 OCResourceProperty OCGetResourceProperties(OCResourceHandle handle);
753 * Get the number of resource types of the resource.
755 * @param handle - handle of resource
756 * @param numResourceTypes - pointer to count variable
759 * OC_STACK_OK - no errors
760 * OC_STACK_ERROR - stack process error
762 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle, uint8_t *numResourceTypes);
765 * Get name of resource type of the resource.
767 * @param handle - handle of resource
768 * @param index - index of resource, 0 to Count - 1
771 * resource type name - if resource found
772 * NULL - resource not found
774 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index);
777 * Get the number of resource interfaces of the resource.
779 * @param handle - handle of resource
780 * @param numResourceInterfaces - pointer to count variable
783 * OC_STACK_OK - no errors
784 * OC_STACK_ERROR - stack process error
787 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
788 uint8_t *numResourceInterfaces);
791 * Get name of resource interface of the resource.
793 * @param handle - handle of resource
794 * @param index - index of resource, 0 to Count - 1
797 * resource interface name - if resource found
798 * NULL - resource not found
800 const char *OCGetResourceInterfaceName(OCResourceHandle handle, uint8_t index);
803 * Get methods of resource interface of the resource.
805 * @param handle - handle of resource
806 * @param index - index of resource, 0 to Count - 1
809 * allowed methods - if resource found
810 * NULL - resource not found
812 uint8_t OCGetResourceInterfaceAllowedMethods(OCResourceHandle handle, uint8_t index);
815 * Get resource handle from the collection resource by index.
817 * @param collectionHandle - handle of collection resource
818 * @param index - index of contained resource, 0 to Count - 1
821 * handle to contained resource - if resource found
822 * NULL - resource not found
824 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
828 * Get the entity handler for a resource.
830 * @param handle - handle of resource
833 * entity handler - if resource found
834 * NULL - resource not found
836 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle);
839 * Notify all registered observers that the resource representation has
840 * changed. If observation includes a query the client is notified only
841 * if the query is valid after the resource representation has changed.
843 * @param handle - handle of resource
844 * @param qos - desired quality of service for the observation notifications
847 * OC_STACK_OK - no errors
848 * OC_STACK_NO_RESOURCE - invalid resource handle
849 * OC_STACK_NO_OBSERVERS - no more observers intrested in resource
851 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos);
854 * Notify specific observers with updated value of representation.
855 * Before this API is invoked by entity handler it has finished processing
856 * queries for the associated observers.
858 * @param handle - handle of resource
859 * @param obsIdList - list of observation ids that need to be notified
860 * @param numberOfIds - number of observation ids included in obsIdList
861 * @param notificationJSONPayload - JSON encoded payload to send in notification
862 * @param qos - desired quality of service of the observation notifications
863 * NOTE: The memory for obsIdList and notificationJSONPayload is managed by the
864 * entity invoking the API. The maximum size of the notification is 1015 bytes
865 * for non-Arduino platforms. For Arduino the maximum size is 247 bytes.
868 * OC_STACK_OK - no errors
869 * OC_STACK_NO_RESOURCE - invalid resource handle
872 OCNotifyListOfObservers (OCResourceHandle handle,
873 OCObservationId *obsIdList,
875 const char *notificationJSONPayload,
876 OCQualityOfService qos);
880 * Send a response to a request.
881 * The response can be a normal, slow, or block (i.e. a response that
882 * is too large to be sent in a single PDU and must span multiple transmissions)
884 * @param response - pointer to structure that contains response parameters
887 * OC_STACK_OK - no errors
889 OCStackResult OCDoResponse(OCEntityHandlerResponse *response);
892 * Cancel a response. Applies to a block response
894 * @param responseHandle - response handle set by stack in OCServerResponse after
895 * OCDoResponse is called
898 * OC_STACK_OK - No errors; Success
899 * OC_STACK_INVALID_PARAM - The handle provided is invalid.
901 OCStackResult OCCancelResponse(OCResponseHandle responseHandle);
905 //-- OCDevAddrToIPv4Addr -------------------------------------------------
907 * This method is used to retrieved the IPv4 address from OCDev address
912 * @param[out] a first byte of IPv4 address.
913 * @param[out] b second byte of IPv4 address.
914 * @param[out] c third byte of IPv4 address.
915 * @param[out] d fourth byte of IPv4 address.
917 * @retval 0 for Success, otherwise some error value
919 //------------------------------------------------------------------------
920 int32_t OCDevAddrToIPv4Addr(OCDevAddr *ipAddr, uint8_t *a, uint8_t *b,
921 uint8_t *c, uint8_t *d );
924 //-- OCDevAddrToPort -------------------------------------------------
926 * This method is used to retrieve the port number from OCDev address
934 * @retval 0 for Success, otherwise some error value
936 //------------------------------------------------------------------------
937 int32_t OCDevAddrToPort(OCDevAddr *ipAddr, uint16_t *port);
941 #endif // __cplusplus
943 #endif /* OCSTACK_H_ */