void Retrans::check_msg_received (Msg &in)
{
switch (in.get_type ())
{
case COAP_TYPE_ACK :
del (&in) ;
break ;
default :
break ;
}
}
void Retrans::check_msg_sent (Msg &in)
{
switch (in.get_type ())
{
case COAP_TYPE_CON :
add (&in) ;
break ;
default :
break ;
}
}
bool Casan::is_hello (Msg &m, long int &hlid)
{
bool found = false ;
// a hello msg is NON POST
if (m.get_type () == COAP_TYPE_NON && m.get_code () == COAP_CODE_POST)
{
m.reset_next_option () ;
for (option *o = m.next_option () ; o != NULL ; o = m.next_option ())
{
if (o->optcode () == option::MO_Uri_Query)
{
// we benefit from the added nul byte at the end of val
if (sscanf ((const char *) o->optval ((int *) 0), CASAN_HELLO, &hlid) == 1)
found = true ;
}
}
}
return found ;
}
bool Casan::is_assoc (Msg &m, time_t &sttl, int &mtu)
{
bool found_ttl = false ;
bool found_mtu = false ;
if (m.get_type () == COAP_TYPE_CON && m.get_code () == COAP_CODE_POST)
{
m.reset_next_option () ;
for (option *o = m.next_option () ; o != NULL ; o = m.next_option ())
{
if (o->optcode () == option::MO_Uri_Query)
{
long int n ; // sscanf "%ld" waits for a long int
// we benefit from the added nul byte at the end of val
if (sscanf ((const char *) o->optval ((int *) 0), CASAN_ASSOC_TTL, &n) == 1)
{
DBG1 (BLUE ("TTL recv: ")) ;
DBG1 (n) ;
DBGLN0 () ;
sttl = ((time_t) n) * 1000 ;
found_ttl = true ;
// continue, just in case there are other query strings
}
else if (sscanf ((const char *) o->optval ((int *) 0), CASAN_ASSOC_MTU, &n) == 1)
{
DBG1 (BLUE ("MTU recv: ")) ;
DBG1 (n) ;
DBGLN0 () ;
mtu = n ;
found_mtu = true ;
// continue, just in case there are other query strings
}
else break ;
}
}
}
return found_ttl && found_mtu ;
}