subscribe.h

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/*
 * subscribe.h -- subscription handling for CoAP
 *                see draft-ietf-core-observe-16
 *
 * Copyright (C) 2010-2012,2014-2015 Olaf Bergmann <bergmann@tzi.org>
 *
 * This file is part of the CoAP library libcoap. Please see README for terms
 * of use.
 */


#ifndef _COAP_SUBSCRIBE_H_
#define _COAP_SUBSCRIBE_H_

#include "address.h"
#include "coap_io.h"

#define COAP_OBSERVE_ESTABLISH 0

#define COAP_OBSERVE_CANCEL 1

#ifndef COAP_OBS_MAX_NON

#define COAP_OBS_MAX_NON   5
#endif /* COAP_OBS_MAX_NON */

#ifndef COAP_OBS_MAX_FAIL

#define COAP_OBS_MAX_FAIL  3
#endif /* COAP_OBS_MAX_FAIL */

typedef struct coap_subscription_t {
  struct coap_subscription_t *next; 
  coap_endpoint_t local_if;         
  coap_address_t subscriber;        
  unsigned int non_cnt:4;  
  unsigned int fail_cnt:2; 
  unsigned int dirty:1;    
  size_t token_length;     
  unsigned char token[8];  
} coap_subscription_t;

void coap_subscription_init(coap_subscription_t *);

#endif /* _COAP_SUBSCRIBE_H_ */