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/*
The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
Copyright (C) 2001,2002,2003 Aymeric MOIZARD jack@atosc.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <osip/port.h>
#include <osip/osip.h>
#include "fsm.h"
int
nist_init (nist_t ** nist, osip_t * osip, sip_t * invite)
{
int i;
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO2, NULL,
"allocating NIST context\n"));
*nist = (nist_t *) smalloc (sizeof (nist_t));
if (*nist == NULL)
return -1;
#ifndef DISABLE_MEMSET
memset (*nist, 0, sizeof (nist_t));
#endif
/* for INVITE retransmissions */
{
via_t *via;
char *proto;
i = msg_getvia (invite, 0, &via); /* get top via */
if (i != 0)
goto ii_error_1;
proto = via_getprotocol (via);
if (proto == NULL)
goto ii_error_1;
#ifndef WIN32
i = strncasecmp (proto, "TCP", 3);
#else
i = _stricmp (proto, "TCP");
#endif
if (i != 0)
{ /* for other reliable protocol than TCP, the timer
must be desactived by the external application */
(*nist)->timer_j_length = 64 * DEFAULT_T1;
(*nist)->timer_j_start = -1; /* not started */
}
else
{ /* TCP is used: */
(*nist)->timer_j_length = 0; /* MUST do the transition immediatly */
(*nist)->timer_j_start = -1; /* not started */
}
}
return 0;
ii_error_1:
sfree (*nist);
return -1;
}
int
nist_free (nist_t * nist)
{
if (nist == NULL)
return -1;
OSIP_TRACE (osip_trace
(__FILE__, __LINE__, OSIP_INFO2, NULL,
"free nist ressource\n"));
return 0;
}
sipevent_t *
nist_need_timer_j_event (nist_t * nist, state_t state, int transactionid)
{
time_t now = time (NULL);
if (nist == NULL)
return NULL;
if (state == NIST_COMPLETED)
{
if (nist->timer_j_start == -1)
return NULL;
if ((now - nist->timer_j_start) * 1000 > nist->timer_j_length)
return osip_new_event (TIMEOUT_J, transactionid);
}
return NULL;
}
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