示例#1
0
/* Wrapper for terminating dialog from API - from other modules */
static void rpc_end_dlg_entry_id(rpc_t *rpc, void *c) {
    unsigned int h_entry, h_id;
    struct dlg_cell * dlg = NULL;
    str rpc_extra_hdrs = {NULL,0};
    int n;

    n = rpc->scan(c, "dd", &h_entry, &h_id);
    if (n < 2) {
	    LM_ERR("unable to read the parameters (%d)\n", n);
	    rpc->fault(c, 500, "Invalid parameters");
	    return;
    }
    if(rpc->scan(c, "*S", &rpc_extra_hdrs)<1)
    {
	    rpc_extra_hdrs.s = NULL;
	    rpc_extra_hdrs.len = 0;
    }

    dlg = lookup_dlg(h_entry, h_id);//increments ref count!
    if(dlg==NULL) {
	    rpc->fault(c, 404, "Dialog not found");
	    return;
    }

    unref_dlg(dlg, 1);

    dlg_terminate(dlg, NULL, NULL/*reason*/, 2, NULL);

}
示例#2
0
/*parameters from MI: dialog ID of the requested dialog*/
mi_response_t *mi_terminate_dlg(const mi_params_t *params, str *extra_hdrs)
{
	unsigned int h_entry, h_id;
	unsigned long long d_id;
	struct dlg_cell * dlg = NULL;
	str dialog_id;
	char *end;
	char bkp;
	int shtag_state = 1;

	if( d_table ==NULL)
		return init_mi_error(404, MI_SSTR(MI_DIALOG_NOT_FOUND));

	h_entry = h_id = 0;

	if (get_mi_string_param(params, "dialog_id", &dialog_id.s, &dialog_id.len) < 0)
		return init_mi_param_error();

	/* Get the dialog based of the dialog_id. This may be a
	 * numerical DID or a string SIP Call-ID */

	/* make value null terminated (in an ugly way) */
	bkp = dialog_id.s[dialog_id.len];
	dialog_id.s[dialog_id.len] = 0;
	/* conver to long long */
	d_id = strtoll( dialog_id.s, &end, 10);
	dialog_id.s[dialog_id.len] = bkp;
	if (end-dialog_id.s==dialog_id.len) {
		/* the ID is numeric, so let's consider it DID */
		h_entry = (unsigned int)(d_id>>(8*sizeof(int)));
		h_id = (unsigned int)(d_id &
			(((unsigned long long)1<<(8*sizeof(int)))-1) );
		LM_DBG("ID: %llu (h_entry %u h_id %u)\n", d_id, h_entry, h_id);
		dlg = lookup_dlg(h_entry, h_id);
	} else {
示例#3
0
/* Wrapper for terminating dialog from API - from other modules */
int w_api_lookup_terminate_dlg(unsigned int h_entry, unsigned int h_id, str *hdrs) {
    struct dlg_cell *dlg;

    dlg = lookup_dlg(h_entry, h_id); //increments ref count!

    if (!dlg) {
        LM_ERR("Asked to tear down non existent dialog\n");
        return -1;
    }

    unref_dlg(dlg, 1);

    return dlg_terminate(dlg, NULL, NULL/*reason*/, 2, hdrs);

}
示例#4
0
int terminate_dlg(unsigned int h_entry, unsigned int h_id,str *reason)
{
	struct dlg_cell * dlg = NULL;
	int ret = 0;

	dlg = lookup_dlg(h_entry, h_id);

	if(!dlg)
		return 0;

	init_dlg_term_reason(dlg,reason->s,reason->len);

	if ( dlg_end_dlg( dlg, 0) ) {
		LM_ERR("Failed to end dialog");
		ret = -1;
	}

	unref_dlg(dlg, 1);
	return ret;
}
示例#5
0
/*!
 * \brief Function that is registered as RR callback for dialog tracking
 *
 * Function that is registered as RR callback for dialog tracking. It
 * sets the appropriate events after the SIP method and run the state
 * machine to update the dialog state. It updates then the saved
 * dialogs and also the statistics.
 * \param req SIP request
 * \param route_params record-route parameter
 * \param param unused
 */
void dlg_onroute(struct sip_msg* req, str *route_params, void *param) {
    struct dlg_cell *dlg;
    str val, callid, ftag, ttag;
    int h_entry, h_id, new_state, old_state, unref, event, timeout;
    unsigned int dir;
    int ret = 0;

    if (current_dlg_pointer != NULL)
        return;

    /* skip initial requests - they may end up here because of the
     * preloaded route */
    if ((!req->to && parse_headers(req, HDR_TO_F, 0) < 0) || !req->to) {
        LM_ERR("bad request or missing TO hdr :-/\n");
        return;
    }
    if (get_to(req)->tag_value.len == 0)
        return;

    dlg = 0;
    dir = DLG_DIR_NONE;

    if (seq_match_mode != SEQ_MATCH_NO_ID) {
        if (d_rrb.get_route_param(req, &rr_param, &val) != 0) {
            LM_DBG("Route param '%.*s' not found\n", rr_param.len, rr_param.s);
            if (seq_match_mode == SEQ_MATCH_STRICT_ID)
                return;
        } else {
            LM_DBG("route param is '%.*s' (len=%d)\n", val.len, val.s, val.len);

            if (parse_dlg_rr_param(val.s, val.s + val.len, &h_entry, &h_id) < 0)
                return;

            dlg = lookup_dlg(h_entry, h_id);
            if (dlg == 0) {
                LM_WARN("unable to find dialog for %.*s "
                        "with route param '%.*s' [%u:%u]\n",
                        req->first_line.u.request.method.len,
                        req->first_line.u.request.method.s,
                        val.len, val.s, h_entry, h_id);
                if (seq_match_mode == SEQ_MATCH_STRICT_ID)
                    return;
            } else {
                if (pre_match_parse(req, &callid, &ftag, &ttag, 1) < 0) {
                    // lookup_dlg has incremented the ref count by 1
                    unref_dlg(dlg, 1);
                    return;
                }
                if (match_dialog(dlg, &callid, &ftag, &ttag, &dir) == 0) {
                    LM_WARN("tight matching failed for %.*s with callid='%.*s'/%d, "
                            "ftag='%.*s'/%d, ttag='%.*s'/%d and direction=%d\n",
                            req->first_line.u.request.method.len,
                            req->first_line.u.request.method.s,
                            callid.len, callid.s, callid.len,
                            ftag.len, ftag.s, ftag.len,
                            ttag.len, ttag.s, ttag.len, dir);
                    LM_WARN("dialog identification elements are callid='%.*s'/%d, "
                            "caller tag='%.*s'/%d\n",
                            dlg->callid.len, dlg->callid.s, dlg->callid.len,
                            dlg->from_tag.len, dlg->from_tag.s,
                            dlg->from_tag.len);
                    // lookup_dlg has incremented the ref count by 1
                    unref_dlg(dlg, 1);

                    // Reset variables in order to do a lookup based on SIP-Elements.
                    dlg = 0;
                    dir = DLG_DIR_NONE;

                    if (seq_match_mode == SEQ_MATCH_STRICT_ID)
                        return;
                }
            }
        }
    }

    if (dlg == 0) {
        if (pre_match_parse(req, &callid, &ftag, &ttag, 1) < 0)
            return;
        /* TODO - try to use the RR dir detection to speed up here the
         * search -bogdan */
        dlg = get_dlg(&callid, &ftag, &ttag, &dir);
        if (!dlg) {
            LM_DBG("Callid '%.*s' not found\n",
                    req->callid->body.len, req->callid->body.s);
            return;
        }
    }

    /* set current dialog - re-use ref increment from dlg_get() above */
    set_current_dialog(req, dlg);
    _dlg_ctx.dlg = dlg;

    if (d_tmb.register_tmcb(req, NULL, TMCB_REQUEST_FWDED,
            store_dlg_in_tm_cb, (void*) dlg, NULL) < 0) {
        LM_ERR("failed to store dialog in transaction during dialog creation for later reference\n");
    }

    /* run state machine */
    switch (req->first_line.u.request.method_value) {
        case METHOD_PRACK:
            event = DLG_EVENT_REQPRACK;
            break;
        case METHOD_ACK:
            event = DLG_EVENT_REQACK;
            break;
        case METHOD_BYE:
            event = DLG_EVENT_REQBYE;
            break;
        default:
            event = DLG_EVENT_REQ;
    }

    next_state_dlg(dlg, event, &old_state, &new_state, &unref, 0);

    LM_DBG("unref after next state is %i\n", unref);
    CURR_DLG_ID = req->id;
    CURR_DLG_LIFETIME = (unsigned int) (time(0)) - dlg->start_ts;
    CURR_DLG_STATUS = new_state;

    /* run actions for the transition */
    if (event == DLG_EVENT_REQBYE && new_state == DLG_STATE_DELETED &&
            old_state != DLG_STATE_DELETED) {
        LM_DBG("BYE successfully processed\n");
        /* remove from timer */
        ret = remove_dialog_timer(&dlg->tl);
        if (ret < 0) {
            LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
                    "with clid '%.*s' and tags '%.*s'\n",
                    dlg, dlg->h_entry, dlg->h_id,
                    dlg->callid.len, dlg->callid.s,
                    dlg->from_tag.len, dlg->from_tag.s);

        } else if (ret > 0) {
            LM_WARN("inconsitent dlg timer data on dlg %p [%u:%u] "
                    "with clid '%.*s' and tags '%.*s' \n",
                    dlg, dlg->h_entry, dlg->h_id,
                    dlg->callid.len, dlg->callid.s,
                    dlg->from_tag.len, dlg->from_tag.s);

        } else {
            unref++;
        }
        /* dialog terminated (BYE) */
        dlg_terminated(req, dlg, dir);
        unref_dlg(dlg, unref);

        return;
    }

    if ((event == DLG_EVENT_REQ || event == DLG_EVENT_REQACK)
            && new_state == DLG_STATE_CONFIRMED) {

        timeout = get_dlg_timeout(req);
        if (timeout != default_timeout) {
            dlg->lifetime = timeout;
        }
        if (update_dlg_timer(&dlg->tl, dlg->lifetime) == -1) {
            LM_ERR("failed to update dialog lifetime\n");
        }
        if (update_cseqs(dlg, req, dir, &ttag) != 0) {
            LM_ERR("cseqs update failed\n");
        } else {
            dlg->dflags |= DLG_FLAG_CHANGED;
        }

        if (old_state != DLG_STATE_CONFIRMED) {
            LM_DBG("confirming ACK successfully processed\n");

            /* confirming ACK request */
            run_dlg_callbacks(DLGCB_CONFIRMED, dlg, req, NULL, dir, 0);
        } else {
            LM_DBG("sequential request successfully processed\n");

            /* within dialog request */
            run_dlg_callbacks(DLGCB_REQ_WITHIN, dlg, req, NULL, dir, 0);

            if ((event != DLG_EVENT_REQACK) &&
                    (dlg->cbs.types) & DLGCB_RESPONSE_WITHIN) {
                /* ref the dialog as registered into the transaction callback.
                 * unref will be done when the callback will be destroyed */
                ref_dlg(dlg, 1);
                /* register callback for the replies of this request */
                if (d_tmb.register_tmcb(req, 0, TMCB_RESPONSE_FWDED,
                        (dir == DLG_DIR_UPSTREAM) ? dlg_seq_down_onreply : dlg_seq_up_onreply,
                        (void*) dlg, unreference_dialog) < 0) {
                    LM_ERR("failed to register TMCB (2)\n");
                    unref_dlg(dlg, 1);
                }
            }
        }
    }

    if (new_state == DLG_STATE_CONFIRMED && old_state != DLG_STATE_CONFIRMED) {
        dlg->dflags |= DLG_FLAG_CHANGED;
    }
    return;
}
示例#6
0
/*parameters from MI: h_entry, h_id of the requested dialog*/
struct mi_root * mi_terminate_dlg(struct mi_root *cmd_tree, void *param ){

	struct mi_node* node;
	unsigned int h_entry, h_id;
	struct dlg_cell * dlg = NULL;
	str *mi_extra_hdrs = NULL;
	int status, msg_len;
	char *msg;


	if( d_table ==NULL)
		goto end;

	node = cmd_tree->node.kids;
	h_entry = h_id = 0;

	if (node==NULL || node->next==NULL)
		return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);

	if (!node->value.s|| !node->value.len|| strno2int(&node->value,&h_entry)<0)
		goto error;

	node = node->next;
	if ( !node->value.s || !node->value.len || strno2int(&node->value,&h_id)<0)
		goto error;

	if (node->next) {
		node = node->next;
		if (node->value.len && node->value.s)
			mi_extra_hdrs = &node->value;
	}

	LM_DBG("h_entry %u h_id %u\n", h_entry, h_id);

	dlg = lookup_dlg(h_entry, h_id);

	/* lookup_dlg has incremented the reference count !! */

	if(dlg){
		init_dlg_term_reason(dlg,"MI Termination",sizeof("MI Termination")-1);

		if ( dlg_end_dlg( dlg, mi_extra_hdrs) ) {
			status = 500;
			msg = MI_DLG_OPERATION_ERR;
			msg_len = MI_DLG_OPERATION_ERR_LEN;
		} else {
			status = 200;
			msg = MI_OK_S;
			msg_len = MI_OK_LEN;
		}

		unref_dlg(dlg, 1);

		return init_mi_tree(status, msg, msg_len);
	}

end:
	return init_mi_tree(404, MI_DIALOG_NOT_FOUND, MI_DIALOG_NOT_FOUND_LEN);
	
error:
	return init_mi_tree( 400, MI_BAD_PARM_S, MI_BAD_PARM_LEN);

}
示例#7
0
void dlg_onroute(struct sip_msg* req, str *route_params, void *param)
{
	struct dlg_cell *dlg;
	str val = {0,0};
	str callid;
	str ftag;
	str ttag;
	int h_entry;
	int h_id;
	int new_state;
	int old_state;
	int unref;
	int event;
	int timeout;
	unsigned int update_val;
	unsigned int dir,dst_leg,src_leg;
	int ret = 0,ok = 1;
	struct dlg_entry *d_entry;
	str *msg_cseq;
	char *final_cseq;

	/* as this callback is triggered from loose_route, which can be 
	   accidentaly called more than once from script, we need to be sure 
	   we do this only once !*/
	if (current_dlg_pointer)
		return;

	/* skip initial requests - they may end up here because of the
	 * preloaded route */
	if ( (!req->to && parse_headers(req, HDR_TO_F,0)<0) || !req->to ) {
		LM_ERR("bad request or missing TO hdr :-/\n");
		return;
	}
	if ( get_to(req)->tag_value.len==0 )
		return;

	dlg = 0;
	dir = DLG_DIR_NONE;
	dst_leg = -1;

	/* From RR callback, param will be NULL
	 * From match_dialog, param might have a value, if we
	 * are in the topology hiding case & we were able to extract the
	 * DID from the R-URI */
	if (param)
		val = *((str *)param);

	if ( seq_match_mode!=SEQ_MATCH_NO_ID ) {
		if( val.s == NULL && d_rrb.get_route_param( req, &rr_param, &val)!=0) {
			LM_DBG("Route param '%.*s' not found\n", rr_param.len,rr_param.s);
			if (seq_match_mode==SEQ_MATCH_STRICT_ID )
				return;
		} else {
			LM_DBG("route param is '%.*s' (len=%d)\n",val.len,val.s,val.len);

			if ( parse_dlg_rr_param( val.s, val.s+val.len, &h_entry, &h_id)<0 )
				return;

			dlg = lookup_dlg( h_entry, h_id);
			if (dlg==0) {
				LM_DBG("unable to find dialog for %.*s "
					"with route param '%.*s'\n",
					req->first_line.u.request.method.len,
					req->first_line.u.request.method.s,
					val.len,val.s);
			} else {
				/* lookup_dlg has incremented the ref count by 1 */
				if (pre_match_parse( req, &callid, &ftag, &ttag)<0) {
					unref_dlg(dlg, 1);
					return;
				}
				if (match_dialog(dlg,&callid,&ftag,&ttag,&dir, &dst_leg )==0){
					LM_WARN("tight matching failed for %.*s with "
						"callid='%.*s'/%d,"
						" ftag='%.*s'/%d, ttag='%.*s'/%d and direction=%d\n",
						req->first_line.u.request.method.len,
						req->first_line.u.request.method.s,
						callid.len, callid.s, callid.len,
						ftag.len, ftag.s, ftag.len,
						ttag.len, ttag.s, ttag.len, dir);
					LM_WARN("dialog identification elements are "
						"callid='%.*s'/%d, "
						"caller tag='%.*s'/%d, callee tag='%.*s'/%d\n",
						dlg->callid.len, dlg->callid.s, dlg->callid.len,
						dlg->legs[DLG_CALLER_LEG].tag.len,
						dlg->legs[DLG_CALLER_LEG].tag.s,
						dlg->legs[DLG_CALLER_LEG].tag.len,
						dlg->legs[callee_idx(dlg)].tag.len,
						ZSW(dlg->legs[callee_idx(dlg)].tag.s),
						dlg->legs[callee_idx(dlg)].tag.len);
					unref_dlg(dlg, 1);
					dlg = NULL;
				}
			}
			if (dlg==NULL && seq_match_mode==SEQ_MATCH_STRICT_ID )
				return;
		}
	}

	if (dlg==0) {
		if (pre_match_parse( req, &callid, &ftag, &ttag)<0)
			return;
		/* TODO - try to use the RR dir detection to speed up here the
		 * search -bogdan */
		dlg = get_dlg(&callid, &ftag, &ttag, &dir, &dst_leg);
		if (!dlg){
			LM_DBG("Callid '%.*s' not found\n",
				req->callid->body.len, req->callid->body.s);
			return;
		}
	}

	/* run state machine */
	switch ( req->first_line.u.request.method_value ) {
		case METHOD_PRACK:
			event = DLG_EVENT_REQPRACK; break;
		case METHOD_ACK:
			event = DLG_EVENT_REQACK; break;
		case METHOD_BYE:
			event = DLG_EVENT_REQBYE; break;
		default:
			event = DLG_EVENT_REQ;
	}

	/* save last_dst_leg before running state machine
	 * helpful for logging various bogus cases according to the RFC */
	last_dst_leg = dst_leg;

	next_state_dlg( dlg, event, &old_state, &new_state, &unref);

	/* set current dialog - it will keep a ref! */
	set_current_dialog(dlg);
	log_bogus_dst_leg(dlg);
	d_entry = &(d_table->entries[dlg->h_entry]);

	if(dlg->flags & DLG_FLAG_TOPHIDING) {
		dlg_th_onroute(dlg, req, dir);
	}

	/* run actions for the transition */
	if (event==DLG_EVENT_REQBYE && new_state==DLG_STATE_DELETED &&
	old_state!=DLG_STATE_DELETED) {
		
		/*destroy linkers */
		destroy_linkers(dlg->profile_links);
		dlg->profile_links = NULL;

		if (!dlg->terminate_reason.s) {
			if (last_dst_leg == 0)
				init_dlg_term_reason(dlg,"Upstream BYE",sizeof("Upstream BYE")-1);
			else
				init_dlg_term_reason(dlg,"Downstream BYE",sizeof("Downstream BYE")-1);
		}

		LM_DBG("BYE successfully processed - dst_leg = %d\n",last_dst_leg);

		if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
			dlg_lock (d_table,d_entry);

			if (dlg->legs[dst_leg].last_gen_cseq) {

				update_val = ++(dlg->legs[dst_leg].last_gen_cseq);
				dlg_unlock (d_table,d_entry);

				if (update_msg_cseq(req,0,update_val) != 0)
					LM_ERR("failed to update BYE msg cseq\n");

				msg_cseq = &((struct cseq_body *)req->cseq->parsed)->number;

				final_cseq = shm_malloc(msg_cseq->len + 1);
				if (final_cseq == 0) {
					LM_ERR("no more shm mem\n");
					goto after_unlock5;
				}

				memcpy(final_cseq,msg_cseq->s,msg_cseq->len);
				final_cseq[msg_cseq->len] = 0;

				if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
				fix_final_cseq,
				(void*)final_cseq, 0)<0 ) {
					LM_ERR("failed to register TMCB (2)\n");
				}
			}
			else
				dlg_unlock (d_table,d_entry);
		}

after_unlock5:

		/* remove from timer */
		ret = remove_dlg_timer(&dlg->tl);
		if (ret < 0) {
			LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
				"with clid '%.*s' and tags '%.*s' '%.*s'\n",
				dlg, dlg->h_entry, dlg->h_id,
				dlg->callid.len, dlg->callid.s,
				dlg->legs[DLG_CALLER_LEG].tag.len,
				dlg->legs[DLG_CALLER_LEG].tag.s,
				dlg->legs[callee_idx(dlg)].tag.len,
				ZSW(dlg->legs[callee_idx(dlg)].tag.s));
		} else if (ret > 0) {
			LM_DBG("dlg expired (not in timer list) on dlg %p [%u:%u] "
				"with clid '%.*s' and tags '%.*s' '%.*s'\n",
				dlg, dlg->h_entry, dlg->h_id,
				dlg->callid.len, dlg->callid.s,
				dlg->legs[DLG_CALLER_LEG].tag.len,
				dlg->legs[DLG_CALLER_LEG].tag.s,
				dlg->legs[callee_idx(dlg)].tag.len,
				ZSW(dlg->legs[callee_idx(dlg)].tag.s));
		} else {
			/* dialog sucessfully removed from timer -> unref */
			unref++;
		}

		/* dialog terminated (BYE) */
		run_dlg_callbacks( DLGCB_TERMINATED, dlg, req, dir, 0);

		/* delete the dialog from DB */
		if (should_remove_dlg_db())
			remove_dialog_from_db(dlg);

		/* destroy dialog */
		unref_dlg(dlg, unref);

		if_update_stat( dlg_enable_stats, active_dlgs, -1);
		return;
	}

	if ( (event==DLG_EVENT_REQ || event==DLG_EVENT_REQACK)
	&& new_state==DLG_STATE_CONFIRMED) {
		LM_DBG("sequential request successfully processed (dst_leg=%d)\n",
			dst_leg);

		/* within dialog request */
		run_dlg_callbacks( DLGCB_REQ_WITHIN, dlg, req, dir, 0);

		timeout = get_dlg_timeout_update(req);
		/* update timer during sequential request? */
		if (timeout != 0) {
			dlg->lifetime = timeout;
			if (update_dlg_timer( &dlg->tl, dlg->lifetime )==-1)
				LM_ERR("failed to update dialog lifetime\n");
		}
		if ( event!=DLG_EVENT_REQACK ) {

			if (dst_leg==-1 || switch_cseqs(dlg, dst_leg) != 0 ||
				update_cseqs(dlg,req,dst_leg,0)) {
				ok = 0;
				LM_ERR("cseqs update failed on leg=%d\n",dst_leg);
			}

			if (req->first_line.u.request.method_value == METHOD_INVITE) {
				if (dst_leg == DLG_CALLER_LEG)
					src_leg = callee_idx(dlg);
				else
					src_leg = DLG_CALLER_LEG;

				if (update_cseqs(dlg,req,src_leg,1) != 0) {
					ok=0;
					LM_ERR("failed to update inv cseq on leg %d\n",src_leg);
				}
			}

			if (dlg->flags & DLG_FLAG_PING_CALLER || 
					dlg->flags & DLG_FLAG_PING_CALLEE) {

				dlg_lock (d_table, d_entry);

				if (dlg->legs[dst_leg].last_gen_cseq) {
					
					update_val = ++(dlg->legs[dst_leg].last_gen_cseq);
					dlg_unlock( d_table, d_entry );

					if (update_msg_cseq(req,0,update_val) != 0) {
						LM_ERR("failed to update sequential request msg cseq\n");
						ok = 0;
					}
				}
				else
					dlg_unlock( d_table, d_entry );
			}

			if (ok) {
				dlg->flags |= DLG_FLAG_CHANGED;
				if ( dlg_db_mode==DB_MODE_REALTIME )
					update_dialog_dbinfo(dlg);

				if (replication_dests)
					replicate_dialog_updated(dlg);
			}
		}
		else
		{
			if (dlg->flags & DLG_FLAG_PING_CALLER || 
					dlg->flags & DLG_FLAG_PING_CALLEE) {

				dlg_lock (d_table, d_entry);

				if (dlg->legs[dst_leg].last_gen_cseq) {
					update_val = dlg->legs[dst_leg].last_gen_cseq;
					dlg_unlock( d_table, d_entry );

					if (update_msg_cseq(req,0,update_val) != 0) {
						LM_ERR("failed to update ACK msg cseq\n");
					}
				}
				else 
					dlg_unlock( d_table, d_entry );
			}
		}

		if ( event!=DLG_EVENT_REQACK) {
			/* register callback for the replies of this request */

			if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
				dlg_lock( d_table, d_entry);
				if (dlg->legs[dst_leg].last_gen_cseq) {
					/* ref the dialog as registered into the transaction callback.
					 * unref will be done when the callback will be destroyed */
					ref_dlg_unsafe( dlg, 1);
					dlg_unlock( d_table,d_entry);

					if(parse_headers(req, HDR_CSEQ_F, 0) <0 ) {
						LM_ERR("failed to parse cseq header \n");
						unref_dlg(dlg,1);
						goto early_check;
					}

					msg_cseq = &((struct cseq_body *)req->cseq->parsed)->number;
					dlg_cseq_wrapper *wrap = shm_malloc(sizeof(dlg_cseq_wrapper) +
							msg_cseq->len);

					if (wrap == 0){
						LM_ERR("No more shm mem\n");
						unref_dlg(dlg, 1);
						goto early_check;
					}

					wrap->dlg = dlg;
					wrap->cseq.s = (char *)(wrap + 1);
					wrap->cseq.len = msg_cseq->len;
					memcpy(wrap->cseq.s,msg_cseq->s,msg_cseq->len);

					if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
					(dir==DLG_DIR_UPSTREAM)?dlg_seq_down_onreply_mod_cseq:dlg_seq_up_onreply_mod_cseq,
					(void*)wrap, unreference_dialog_cseq)<0 ) {
						LM_ERR("failed to register TMCB (2)\n");
						unref_dlg( dlg , 1);
						shm_free(wrap);
					}
				}
				else {
					/* dialog is in ping timer list
					 * but no pings have been generated yet */
					dlg_unlock ( d_table, d_entry );
					goto regular_indlg_req;
				}
			} else {
regular_indlg_req:
				if (dlg->cbs.types & DLGCB_RESPONSE_WITHIN)
				{
					ref_dlg( dlg , 1);
					if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
					(dir==DLG_DIR_UPSTREAM)?dlg_seq_down_onreply:dlg_seq_up_onreply,
					(void*)dlg, unreference_dialog)<0 ) {
						LM_ERR("failed to register TMCB (2)\n");
							unref_dlg( dlg , 1);
					}
				}
			}
		}
	}

early_check:
	if ( (event==DLG_EVENT_REQPRACK || event == DLG_EVENT_REQ)
			&& new_state==DLG_STATE_EARLY) {
		/* within dialog request */
		run_dlg_callbacks( DLGCB_REQ_WITHIN, dlg, req, dir, 0);

		LM_DBG("EARLY event %d successfully processed (dst_leg=%d)\n",event,dst_leg);
			if (dst_leg==-1 || switch_cseqs(dlg, dst_leg) != 0 ||
				update_cseqs(dlg,req,dst_leg,0))
				LM_ERR("cseqs update failed on leg=%d\n",dst_leg);
	}

	if(new_state==DLG_STATE_CONFIRMED && old_state==DLG_STATE_CONFIRMED_NA){
		dlg->flags |= DLG_FLAG_CHANGED;
		if(dlg_db_mode == DB_MODE_REALTIME)
			update_dialog_dbinfo(dlg);

		if (replication_dests)
			replicate_dialog_updated(dlg);
	}

	return;
}