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 //-----------------------------------------------------------------------------
54 * Data structure to encapsulate IPv4/IPv6/Contiki/lwIP device addresses.
56 typedef struct OCDevAddr
58 uint32_t size; // length of the address stored in addr field.
59 uint8_t addr[DEV_ADDR_SIZE_MAX]; // device address.
63 * OC Virtual resources supported by every OC device.
67 OC_WELL_KNOWN_URI= 0, // "/oc/core"
68 OC_DEVICE_URI, // "/oc/core/d"
69 OC_RESOURCE_TYPES_URI, // "/oc/core/d/type"
71 OC_PRESENCE, // "/oc/presence"
73 OC_MAX_VIRTUAL_RESOURCES // Max items in the list
77 * Standard RESTful HTTP Methods.
82 OC_REST_GET = (1 << 0), // Read
83 OC_REST_PUT = (1 << 1), // Write
84 OC_REST_POST = (1 << 2), // Update
85 OC_REST_DELETE = (1 << 3), // Delete
86 // Register observe request for most up date notifications ONLY.
87 OC_REST_OBSERVE = (1 << 4),
88 // Register observe request for all notifications, including stale notifications.
89 OC_REST_OBSERVE_ALL = (1 << 5),
90 // Deregister observation, intended for internal use
91 OC_REST_CANCEL_OBSERVE = (1 << 6),
93 // Subscribe for all presence notifications of a particular resource.
94 OC_REST_PRESENCE = (1 << 7)
99 * Host Mode of Operation.
109 * Quality of Service.
116 OC_NA_QOS // No Quality is defined, let the stack decide
117 } OCQualityOfService;
120 * Resource Properties.
122 * ::OC_ACTIVE When this bit is set, the resource is initialized, otherwise the resource
123 * is 'inactive'. 'inactive' signifies that the resource has been marked for
124 * deletion or is already deleted.
125 * ::OC_DISCOVERABLE When this bit is set, the resource is allowed to be discovered by clients.
126 * ::OC_OBSERVABLE When this bit is set, the resource is allowed to be observed by clients.
127 * ::OC_SLOW When this bit is set, the resource has been marked as 'slow'. 'slow' signifies
128 * that responses from this resource can expect delays in processing its
129 * requests from clients.
130 * ::OC_SECURE When this bit is set, the resource is a secure resource.
134 OC_ACTIVE = (1 << 0),
135 OC_DISCOVERABLE = (1 << 1),
136 OC_OBSERVABLE = (1 << 2),
139 } OCResourceProperty;
142 * Transport Protocol IDs.
146 OC_INVALID_ID = (1 << 0),
147 OC_COAP_ID = (1 << 1)
148 } OCTransportProtocolID;
159 OC_ALL // Multicast message: send over all the interfaces.
160 } OCConnectivityType;
163 * Declares Stack Results & Errors.
167 /* Success status code - START HERE */
169 OC_STACK_RESOURCE_CREATED,
170 OC_STACK_RESOURCE_DELETED,
172 /* Success status code - END HERE */
173 /* Error status code - START HERE */
174 OC_STACK_INVALID_URI = 20,
175 OC_STACK_INVALID_QUERY,
177 OC_STACK_INVALID_PORT,
178 OC_STACK_INVALID_CALLBACK,
179 OC_STACK_INVALID_METHOD,
180 OC_STACK_INVALID_PARAM,
181 OC_STACK_INVALID_OBSERVE_PARAM,
185 OC_STACK_ADAPTER_NOT_ENABLED,
187 OC_STACK_NO_RESOURCE, /* resource not found */
188 OC_STACK_RESOURCE_ERROR, /* ex: not supported method or interface */
189 OC_STACK_SLOW_RESOURCE,
190 OC_STACK_NO_OBSERVERS, /* resource has no registered observers */
191 OC_STACK_OBSERVER_NOT_FOUND,
192 OC_STACK_VIRTUAL_DO_NOT_HANDLE,
193 OC_STACK_INVALID_OPTION,
194 OC_STACK_MALFORMED_RESPONSE, /* the remote reply contained malformed data */
195 OC_STACK_PERSISTENT_BUFFER_REQUIRED,
196 OC_STACK_INVALID_REQUEST_HANDLE,
197 OC_STACK_INVALID_DEVICE_INFO,
198 OC_STACK_INVALID_JSON,
199 /* NOTE: Insert all new error codes here!*/
201 OC_STACK_PRESENCE_STOPPED = 128,
202 OC_STACK_PRESENCE_TIMEOUT,
203 OC_STACK_PRESENCE_DO_NOT_HANDLE,
206 /* Error status code - END HERE */
210 * Handle to an @ref OCDoResource invocation.
212 typedef void * OCDoHandle;
215 * Handle to an OCResource object owned by the OCStack.
217 typedef void * OCResourceHandle;
219 typedef void * OCRequestHandle;
220 typedef void * OCResponseHandle;
223 * Unique identifier for each observation request. Used when observations are
224 * registered or deregistering. Used by entity handler to signal specific
225 * observers to be notified of resource changes.
226 * There can be maximum of 256 observations per server.
228 typedef uint8_t OCObservationId;
231 * Action associated with observation.
235 OC_OBSERVE_REGISTER = 0,
236 OC_OBSERVE_DEREGISTER = 1,
237 OC_OBSERVE_NO_OPTION = 2
242 // Action associated with observation request
243 OCObserveAction action;
244 // Identifier for observation being registered/deregistered
245 OCObservationId obsId;
249 * Possible returned values from entity handler.
255 OC_EH_RESOURCE_CREATED,
256 OC_EH_RESOURCE_DELETED,
259 OC_EH_RESOURCE_NOT_FOUND
260 } OCEntityHandlerResult;
263 * This 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 * This 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 ;
375 * Possible returned values from client application.
379 OC_STACK_DELETE_TRANSACTION = 0,//!< OC_STACK_DELETE_TRANSACTION
380 OC_STACK_KEEP_TRANSACTION //!< OC_STACK_KEEP_TRANSACTION
381 } OCStackApplicationResult;
383 //-----------------------------------------------------------------------------
384 // Callback function definitions
385 //-----------------------------------------------------------------------------
388 * Client applications implement this callback to consume responses received from Servers.
390 typedef OCStackApplicationResult (* OCClientResponseHandler)(void *context, OCDoHandle handle,
391 OCClientResponse * clientResponse);
394 * Client applications using a context pointer implement this callback to delete the
395 * context upon removal of the callback/context pointer from the internal callback-list.
397 typedef void (* OCClientContextDeleter)(void *context);
400 * This info is passed from application to OC Stack when initiating a request to Server.
405 OCClientResponseHandler cb;
406 OCClientContextDeleter cd;
410 * Application server implementations must implement this callback to consume requests OTA.
411 * Entity handler callback needs to fill the resPayload of the entityHandlerRequest.
413 typedef OCEntityHandlerResult (*OCEntityHandler)
414 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest);
417 * Device Entity handler need to use this call back instead of OCEntityHandler.
419 typedef OCEntityHandlerResult (*OCDeviceEntityHandler)
420 (OCEntityHandlerFlag flag, OCEntityHandlerRequest * entityHandlerRequest, char* uri);
422 //-----------------------------------------------------------------------------
423 // Function prototypes
424 //-----------------------------------------------------------------------------
427 * Initialize the OC Stack. Must be called prior to starting the stack.
430 * IP Address of host device. Deprecated parameter.
432 * Port of host device. Deprecated parameter.
434 * Host device is client, server, or client-server.
436 * @return ::OC_STACK_OK on success, some other value upon failure.
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
448 * @return ::OC_STACK_OK on success, some other value upon failure.
450 OCStackResult OCStop();
453 * Called in main loop of OC client or server. Allows low-level processing of
456 * @return ::OC_STACK_OK on success, some other value upon failure.
458 OCStackResult OCProcess();
461 * Discover or Perform requests on a specified resource (specified by that Resource's respective
464 * @param handle @ref OCDoHandle to refer to the request sent out on behalf of
465 * calling this API. This handle can be used to cancel this operation
466 * via the OCCancel API.
467 * Note: This reference is handled internally, and
468 * should not be free'd by the consumer. A NULL handle is permitted
469 * in the event where the caller has no use for the return value.
470 * @param method @ref OCMethod to perform on the resource.
471 * @param requiredUri URI of the resource to interact with.
472 * @param referenceUri URI of the reference resource.
473 * @param request JSON encoded request.
474 * @param conType @ref OCConnectivityType type of connectivity indicating the
475 * interface. Example: ::OC_WIFI, ::OC_ETHERNET, ::OC_ALL.
476 * @param qos Quality of service. Note that if this API is called on a uri with
477 * the well-known multicast IP address, the qos will be forced to
479 * since it is impractical to send other QOS levels on such addresses.
480 * @param cbData Asynchronous callback function that is invoked
481 * by the stack when discovery or resource interaction is complete.
482 * @param options The address of an array containing the vendor specific
483 * header options to be sent with the request.
484 * @param numOptions Number of header options to be included.
486 * Note: Presence subscription amendments (ie. adding additional resource type filters by calling
487 * this API again) require the use of the same base URI as the original request to successfully
488 * amend the presence filters.
490 * @return ::OC_STACK_OK on success, some other value upon failure.
492 OCStackResult OCDoResource(OCDoHandle *handle, OCMethod method, const char *requiredUri,
493 const char *referenceUri, const char *request, OCConnectivityType conType,
494 OCQualityOfService qos, OCCallbackData *cbData,
495 OCHeaderOption * options, uint8_t numOptions);
498 * Cancel a request associated with a specific @ref OCDoResource invocation.
500 * @param handle - Used to identify a specific OCDoResource invocation.
501 * @param qos - used to specify Quality of Service (read below for more info)
502 * @param options- used to specify vendor specific header options when sending
503 * explicit observe cancellation
504 * @param numOptions- Number of header options to be included
506 * @return ::OC_STACK_OK on success, some other value upon failure.
508 OCStackResult OCCancel(OCDoHandle handle, OCQualityOfService qos, OCHeaderOption * options,
513 * When operating in @ref OCServer or @ref OCClientServer mode, this API will start sending out
514 * presence notifications to clients via multicast. Once this API has been called with a success,
515 * clients may query for this server's presence and this server's stack will respond via multicast.
517 * Server can call this function when it comes online for the first time, or when it comes back
518 * online from offline mode, or when it re enters network.
520 * @param ttl Time To Live in seconds.
521 * Note: If ttl is '0', then the default stack value will be used (60 Seconds).
523 * @return ::OC_STACK_OK on success, some other value upon failure.
525 OCStackResult OCStartPresence(const uint32_t ttl);
528 * When operating in @ref OCServer or @ref OCClientServer mode, this API will stop sending out
529 * presence notifications to clients via multicast. Once this API has been called with a success,
530 * this server's stack will not respond to clients querying for this server's presence.
532 * Server can call this function when it is terminating, going offline, or when going
535 * @return ::OC_STACK_OK on success, some other value upon failure.
538 OCStackResult OCStopPresence();
543 * Set default device entity handler.
545 * @param entityHandler Entity handler function that is called by ocstack to handle requests for
546 * any undefined resources or default actions.
547 * If NULL is passed it removes the device default entity handler.
549 * @return ::OC_STACK_OK on success, some other value upon failure.
551 OCStackResult OCSetDefaultDeviceEntityHandler(OCDeviceEntityHandler entityHandler);
554 * Set device information.
556 * @param deviceInfo Structure passed by the server application containing
557 * the device information.
559 * @return ::OC_STACK_OK on success, some other value upon failure.
561 OCStackResult OCSetDeviceInfo(OCDeviceInfo deviceInfo);
566 * @param handle Pointer to handle to newly created resource. Set by ocstack and
567 * used to refer to resource.
568 * @param resourceTypeName Name of resource type. Example: "core.led".
569 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
570 * @param uri URI of the resource. Example: "/a/led".
571 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
572 * NULL for default entity handler.
573 * @param resourceProperties Properties supported by resource.
574 * Example: ::OC_DISCOVERABLE|::OC_OBSERVABLE.
576 * @return ::OC_STACK_OK on success, some other value upon failure.
578 OCStackResult OCCreateResource(OCResourceHandle *handle,
579 const char *resourceTypeName,
580 const char *resourceInterfaceName,
582 OCEntityHandler entityHandler,
583 uint8_t resourceProperties);
586 * Create a resource. with host ip address for remote resource.
588 * @param handle Pointer to handle to newly created resource. Set by ocstack.
589 * Used to refer to resource.
590 * @param resourceTypeName Name of resource type. Example: "core.led".
591 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
592 * @param host HOST address of the remote resource. Example: "coap://xxx.xxx.xxx.xxx:xxxxx".
593 * @param uri URI of the resource. Example: "/a/led".
594 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
595 * NULL for default entity handler.
596 * @param resourceProperties Properties supported by resource.
597 * Example: ::OC_DISCOVERABLE|::OC_OBSERVABLE
599 * @return ::OC_STACK_OK on success, some other value upon failure.
601 OCStackResult OCCreateResourceWithHost(OCResourceHandle *handle,
602 const char *resourceTypeName,
603 const char *resourceInterfaceName,
606 OCEntityHandler entityHandler,
607 uint8_t resourceProperties);
610 * Add a resource to a collection resource.
612 * @param collectionHandle Handle to the collection resource.
613 * @param resourceHandle Handle to resource to be added to the collection resource.
615 * @return ::OC_STACK_OK on success, some other value upon failure.
617 OCStackResult OCBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
620 * Remove a resource from a collection resource.
622 * @param collectionHandle Handle to the collection resource.
623 * @param resourceHandle Handle to resource to be removed from the collection resource.
625 * @return ::OC_STACK_OK on success, some other value upon failure.
627 OCStackResult OCUnBindResource(OCResourceHandle collectionHandle, OCResourceHandle resourceHandle);
630 * Bind a resourcetype to a resource.
632 * @param handle Handle to the resource.
633 * @param resourceTypeName Name of resource type. Example: "core.led".
635 * @return ::OC_STACK_OK on success, some other value upon failure.
637 OCStackResult OCBindResourceTypeToResource(OCResourceHandle handle,
638 const char *resourceTypeName);
640 * Bind a resource interface to a resource.
642 * @param handle Handle to the resource.
643 * @param resourceInterfaceName Name of resource interface. Example: "core.rw".
645 * @return ::OC_STACK_OK on success, some other value upon failure.
647 OCStackResult OCBindResourceInterfaceToResource(OCResourceHandle handle,
648 const char *resourceInterfaceName);
651 * Bind an entity handler to the resource.
653 * @param handle Handle to the resource that the contained resource is to be bound.
654 * @param entityHandler Entity handler function that is called by ocstack to handle requests, etc.
655 * @return ::OC_STACK_OK on success, some other value upon failure.
657 OCStackResult OCBindResourceHandler(OCResourceHandle handle, OCEntityHandler entityHandler);
660 * Get the number of resources that have been created in the stack.
662 * @param numResources Pointer to count variable.
664 * @return ::OC_STACK_OK on success, some other value upon failure.
666 OCStackResult OCGetNumberOfResources(uint8_t *numResources);
669 * Get a resource handle by index.
671 * @param index Index of resource, 0 to Count - 1.
673 * @return Found resource handle or NULL if not found.
675 OCResourceHandle OCGetResourceHandle(uint8_t index);
678 * Delete resource specified by handle. Deletes resource and all resourcetype and resourceinterface
681 * Note: OCDeleteResource() performs operations similar to OCNotifyAllObservers() to notify all
682 * client observers that "this" resource is being deleted.
684 * @param handle Handle of resource to be deleted.
686 * @return ::OC_STACK_OK on success, some other value upon failure.
688 OCStackResult OCDeleteResource(OCResourceHandle handle);
691 * Get the URI of the resource specified by handle.
693 * @param handle Handle of resource.
694 * @return URI string if resource found or NULL if not found.
696 const char *OCGetResourceUri(OCResourceHandle handle);
699 * Get the properties of the resource specified by handle.
700 * NOTE: that after a resource is created, the OC_ACTIVE property is set
701 * for the resource by the stack.
703 * @param handle Handle of resource.
704 * @return OCResourceProperty Bitmask or -1 if resource is not found.
706 OCResourceProperty OCGetResourceProperties(OCResourceHandle handle);
709 * Get the number of resource types of the resource.
711 * @param handle Handle of resource.
712 * @param numResourceTypes Pointer to count variable.
714 * @return ::OC_STACK_OK on success, some other value upon failure.
716 OCStackResult OCGetNumberOfResourceTypes(OCResourceHandle handle, uint8_t *numResourceTypes);
719 * Get name of resource type of the resource.
721 * @param handle Handle of resource.
722 * @param index Index of resource, 0 to Count - 1.
724 * @return Resource type name if resource found or NULL if resource not found.
726 const char *OCGetResourceTypeName(OCResourceHandle handle, uint8_t index);
729 * Get the number of resource interfaces of the resource.
731 * @param handle Handle of resource.
732 * @param numResourceInterfaces Pointer to count variable.
734 * @return ::OC_STACK_OK on success, some other value upon failure.
736 OCStackResult OCGetNumberOfResourceInterfaces(OCResourceHandle handle,
737 uint8_t *numResourceInterfaces);
740 * Get name of resource interface of the resource.
742 * @param handle Handle of resource.
743 * @param index Index of resource, 0 to Count - 1.
745 * @return Resource interface name if resource found or NULL if 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.
755 * @return Allowed methods if resource found or NULL if resource not found.
757 uint8_t OCGetResourceInterfaceAllowedMethods(OCResourceHandle handle, uint8_t index);
760 * Get resource handle from the collection resource by index.
762 * @param collectionHandle Handle of collection resource.
763 * @param index Index of contained resource, 0 to Count - 1.
765 * @return Handle to contained resource if resource found or NULL if resource not found.
767 OCResourceHandle OCGetResourceHandleFromCollection(OCResourceHandle collectionHandle,
771 * Get the entity handler for a resource.
773 * @param handle Handle of resource.
775 * @return Entity handler if resource found or NULL resource not found.
777 OCEntityHandler OCGetResourceHandler(OCResourceHandle handle);
780 * Notify all registered observers that the resource representation has
781 * changed. If observation includes a query the client is notified only
782 * if the query is valid after the resource representation has changed.
784 * @param handle Handle of resource.
785 * @param qos Desired quality of service for the observation notifications.
787 * @return ::OC_STACK_OK on success, some other value upon failure.
789 OCStackResult OCNotifyAllObservers(OCResourceHandle handle, OCQualityOfService qos);
792 * Notify specific observers with updated value of representation.
793 * Before this API is invoked by entity handler it has finished processing
794 * queries for the associated observers.
796 * @param handle Handle of resource.
797 * @param obsIdList List of observation ids that need to be notified.
798 * @param numberOfIds Number of observation ids included in obsIdList.
799 * @param notificationJSONPayload JSON encoded payload to send in notification.
800 * @param qos Desired quality of service of the observation notifications.
801 * NOTE: The memory for obsIdList and notificationJSONPayload is managed by the
802 * entity invoking the API. The maximum size of the notification is 1015 bytes
803 * for non-Arduino platforms. For Arduino the maximum size is 247 bytes.
805 * @return ::OC_STACK_OK on success, some other value upon failure.
808 OCNotifyListOfObservers (OCResourceHandle handle,
809 OCObservationId *obsIdList,
811 const char *notificationJSONPayload,
812 OCQualityOfService qos);
816 * Send a response to a request.
817 * The response can be a normal, slow, or block (i.e. a response that
818 * is too large to be sent in a single PDU and must span multiple transmissions).
820 * @param response Pointer to structure that contains response parameters.
822 * @return ::OC_STACK_OK on success, some other value upon failure.
824 OCStackResult OCDoResponse(OCEntityHandlerResponse *response);
827 * Cancel a response. Applies to a block response.
829 * @param responseHandle Response handle set by stack in OCServerResponse after
830 * OCDoResponse is called.
832 * @return ::OC_STACK_OK on success, some other value upon failure.
834 OCStackResult OCCancelResponse(OCResponseHandle responseHandle);
839 * This method is used to retrieved the IPv4 address from OCDev address
842 * @param ipAddr OCDevAddr address.
843 * @param a first byte of IPv4 address.
844 * @param b second byte of IPv4 address.
845 * @param c third byte of IPv4 address.
846 * @param d fourth byte of IPv4 address.
847 * @return ::OC_STACK_OK on success, some other value upon failure.
849 int32_t OCDevAddrToIPv4Addr(OCDevAddr *ipAddr, uint8_t *a, uint8_t *b,
850 uint8_t *c, uint8_t *d );
853 * This method is used to retrieve the port number from OCDev address
856 * @param ipAddr OCDevAddr address.
857 * @param port Port number.
858 * @return ::OC_STACK_OK on success, some other value upon failure.
860 int32_t OCDevAddrToPort(OCDevAddr *ipAddr, uint16_t *port);
864 #endif // __cplusplus
866 #endif /* OCSTACK_H_ */