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//******************************************************************
//
// Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#ifndef OC_OBSERVE_H
#define OC_OBSERVE_H
/* In CoAP sequence number is a 24 bit field */
#define MAX_SEQUENCE_NUMBER (0xFFFFFF)
#define MAX_OBSERVER_FAILED_COMM (2)
#define MAX_OBSERVER_NON_COUNT (3)
/* This information is stored for each registerd observer */
typedef struct ResourceObserver {
// Observation Identifier for request
OCObservationId observeId;
// URI of observed resource
unsigned char *resUri;
// Query
unsigned char *query;
//token for the observe request
CAToken_t token;
// Resource handle
OCResource *resource;
// IP address & port of client registered for observe
OCDevAddr *addr;
/** Remote Endpoint address **/
CAAddress_t addressInfo;
/** Connectivity of the endpoint**/
CAConnectivityType_t connectivityType;
// Quality of service of the request
OCQualityOfService qos;
// number of times the server failed to reach the observer
uint8_t failedCommCount;
// number of times the server sent NON notifications
uint8_t lowQosCount;
// force the qos value to CON
uint8_t forceHighQos;
// next node in this list
struct ResourceObserver *next;
} ResourceObserver;
#ifdef WITH_PRESENCE
OCStackResult SendAllObserverNotification (OCMethod method, OCResource *resPtr, uint32_t maxAge,
OCResourceType *resourceType, OCQualityOfService qos);
#else
OCStackResult SendAllObserverNotification (OCMethod method, OCResource *resPtr, uint32_t maxAge,
OCQualityOfService qos);
#endif
OCStackResult SendListObserverNotification (OCResource * resource,
OCObservationId *obsIdList, uint8_t numberOfIds,
unsigned char *notificationJSONPayload, uint32_t maxAge,
OCQualityOfService qos);
void DeleteObserverList();
OCStackResult GenerateObserverId (OCObservationId *observationId);
OCStackResult AddObserver (const char *resUri,
const char *query,
OCObservationId obsId,
CAToken_t *token,
OCDevAddr *addr,
OCResource *resHandle,
OCQualityOfService qos,
CAAddress_t *addressInfo,
CAConnectivityType_t connectivityType);
OCStackResult DeleteObserverUsingToken (CAToken_t * token);
ResourceObserver* GetObserverUsingToken (const CAToken_t * token);
ResourceObserver* GetObserverUsingId (const OCObservationId observeId);
OCStackResult
CreateObserveHeaderOption (CAHeaderOption_t **caHdrOpt,
OCHeaderOption *ocHdrOpt,
uint8_t numOptions,
uint8_t observeFlag);
OCStackResult
GetObserveHeaderOption (uint32_t * observationOption,
CAHeaderOption_t *options,
uint8_t * numOptions);
#endif //OC_OBSERVE_H
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