isc.c File Reference

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Detailed Description

IMS Service Control - ISC Interface communication.

Author:

Dragos Vingarzan vingarzan -at- fokus dot fraunhofer dot de

Definition in file isc.c.

#include "../tm/tm_load.h"
#include "../../dset.h"
#include "isc.h"
#include "mod.h"
#include "mark.h"
#include "sip.h"
#include "../scscf/scscf_load.h"
#include "../../timer.h"

Go to the source code of this file.

Functions
int	isc_forward (struct sip_msg *msg, isc_match *m, isc_mark *mark)
	Forwards the message to the application server.
Variables
tm_binds	isc_tmb
	< link to the stateless reply function in sl module Structure with pointers to tm funcs
str	isc_my_uri
	Uri of myself to loop the message in str.
str	isc_my_uri_sip
	Uri of myself to loop the message in str with leading "sip:".
int	isc_fr_timeout
	default ISC response timeout in ms
int	isc_fr_inv_timeout
	default ISC INVITE response timeout in ms

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Function Documentation

int isc_forward	(	struct sip_msg *	msg,
		isc_match *	m,
		isc_mark *	mark
	)

Forwards the message to the application server.

• Marks the message
• fills routes
• replaces dst_uri

  Parameters:

  	msg	- the SIP message
  	m	- the isc_match that matched with info about where to forward it
  	mark	- the isc_mark that should be used to mark the message

  Returns:

  ISC_RETURN_TRUE if OK, ISC_RETURN_ERROR if not

Definition at line 84 of file isc.c.

References cscf_get_transaction(), isc_fr_inv_timeout, isc_fr_timeout, isc_mark_set(), ISC_RETURN_ERROR, ISC_RETURN_TRUE, isc_tmb, M_NAME, and isc_match::server_name.

Referenced by ISC_match_filter().

{
    struct cell *t;
    unsigned int hash,label;
    ticks_t fr_timeout,fr_inv_timeout;
    DBG( "DEBUG:"M_NAME":isc_forward(): marking for AS <%.*s>\n",
        m->server_name.len, m->server_name.s );

    isc_mark_set(msg,m,mark);
    /* change destination so it forwards to the app server */
    if (msg->dst_uri.s) pkg_free(msg->dst_uri.s);
    msg->dst_uri.s = pkg_malloc(m->server_name.len);
    if (!msg->dst_uri.s) {
        LOG(L_ERR,"ERR:"M_NAME":isc_forward(): error allocating %d bytes\n",m->server_name.len);
        return ISC_RETURN_ERROR;
    }
    msg->dst_uri.len = m->server_name.len;
    memcpy(msg->dst_uri.s,m->server_name.s,m->server_name.len);

    /* append branch if last trigger failed */
    if (*isc_tmb.route_mode == MODE_ONFAILURE) 
        append_branch(msg,msg->first_line.u.request.uri.s,msg->first_line.u.request.uri.len,
            msg->dst_uri.s,msg->dst_uri.len,0,0);
    
    /* set the timeout timers to a lower value */
    cscf_get_transaction(msg,&hash,&label);
    t = isc_tmb.t_gett();
    fr_timeout = t->fr_timeout;
    fr_inv_timeout = t->fr_inv_timeout;
    t->fr_timeout=S_TO_TICKS(isc_fr_timeout)/1000;
    t->fr_inv_timeout=S_TO_TICKS(isc_fr_inv_timeout)/1000;
    
    /* send it */
    isc_tmb.t_relay(msg,0,0);
    
    /* recover the timeouts */
    t->fr_timeout=fr_timeout;
    t->fr_inv_timeout=fr_inv_timeout;
    
    LOG(L_INFO,"INFO:"M_NAME">>       msg was fwded to AS\n");
    
//  LOG(L_INFO,"INFO:"M_NAME":isc_forward:   fw relayed with marking [%8X]\n",rc->mark.cnt);
//  DBG( "DEBUG:"M_NAME":isc_forward: Forward sending finished, resuming operation\n" );
    return ISC_RETURN_TRUE;
}

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Variable Documentation

struct tm_binds isc_tmb

< link to the stateless reply function in sl module Structure with pointers to tm funcs

Definition at line 110 of file mod.c.

str isc_my_uri

Uri of myself to loop the message in str.

Definition at line 92 of file mod.c.

Referenced by isc_init(), isc_mark_get_from_msg(), and isc_mark_set().

str isc_my_uri_sip

Uri of myself to loop the message in str with leading "sip:".

Definition at line 93 of file mod.c.

Referenced by isc_init(), isc_third_party_reg(), and r_send_third_party_reg().

int isc_fr_timeout

default ISC response timeout in ms

Definition at line 94 of file mod.c.

Referenced by isc_forward().

int isc_fr_inv_timeout

default ISC INVITE response timeout in ms

Definition at line 95 of file mod.c.

Referenced by isc_forward().

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