/* generate a fake reply
* it assumes the REPLY_LOCK is already held and returns unlocked */
static void fake_reply(struct cell *t, int branch, int code)
{
struct cancel_info cancel_data;
short do_cancel_branch;
enum rps reply_status;
init_cancel_info(&cancel_data);
do_cancel_branch = is_invite(t) && prepare_cancel_branch(t, branch, 0);
/* mark branch as canceled */
t->uac[branch].request.flags |= F_RB_CANCELED;
t->uac[branch].request.flags |= F_RB_RELAYREPLY;
if(is_local(t)) {
reply_status = local_reply(t, FAKED_REPLY, branch, code, &cancel_data);
} else {
/* rely reply, but don't put on wait, we still need t
* to send the cancels */
reply_status =
relay_reply(t, FAKED_REPLY, branch, code, &cancel_data, 0);
}
/* now when out-of-lock do the cancel I/O */
#ifdef CANCEL_REASON_SUPPORT
if(do_cancel_branch)
cancel_branch(t, branch, &cancel_data.reason, 0);
#else /* CANCEL_REASON_SUPPORT */
if(do_cancel_branch)
cancel_branch(t, branch, 0);
#endif /* CANCEL_REASON_SUPPORT */
/* it's cleaned up on error; if no error occurred and transaction
completed regularly, I have to clean-up myself
*/
if(reply_status == RPS_COMPLETED)
put_on_wait(t);
}
/* returns 1 if everything was OK or -1 for error
*/
int t_release_transaction( struct cell *trans )
{
set_kr(REQ_RLSD);
stop_rb_timers(&trans->uas.response);
cleanup_uac_timers( trans );
put_on_wait( trans );
return 1;
}
void set_final_timer( /* struct s_table *h_table, */ struct cell *t )
{
if ( !is_local(t) && t->uas.request->REQ_METHOD==METHOD_INVITE ) {
/* crank timers for negative replies */
if (t->uas.status>=300) {
start_retr(&t->uas.response);
return;
}
/* local UAS retransmits too */
if (t->relaied_reply_branch==-2 && t->uas.status>=200) {
/* we retransmit 200/INVs regardless of transport --
even if TCP used, UDP could be used upstream and
loose the 200, which is not retransmitted by proxies
*/
force_retr( &t->uas.response );
return;
}
}
put_on_wait(t);
}
static void fake_reply(struct cell *t, int branch, int code )
{
branch_bm_t cancel_bitmap;
short do_cancel_branch;
enum rps reply_status;
do_cancel_branch = is_invite(t) && should_cancel_branch(t, branch);
cancel_bitmap=do_cancel_branch ? 1<<branch : 0;
if ( is_local(t) ) {
reply_status=local_reply( t, FAKED_REPLY, branch,
code, &cancel_bitmap );
if (reply_status==RPS_COMPLETED) {
put_on_wait(t);
}
} else {
reply_status=relay_reply( t, FAKED_REPLY, branch, code,
&cancel_bitmap );
}
}
static int _reply_light( struct cell *trans, char* buf, unsigned int len,
unsigned int code, char *to_tag, unsigned int to_tag_len,
int lock, struct bookmark *bm)
{
struct retr_buf *rb;
unsigned int buf_len;
branch_bm_t cancel_bitmap;
str cb_s;
if (!buf)
{
LM_DBG("response building failed\n");
/* determine if there are some branches to be canceled */
if ( is_invite(trans) ) {
if (lock) LOCK_REPLIES( trans );
which_cancel(trans, &cancel_bitmap );
if (lock) UNLOCK_REPLIES( trans );
}
/* and clean-up, including cancellations, if needed */
goto error;
}
cancel_bitmap=0;
if (lock) LOCK_REPLIES( trans );
if ( is_invite(trans) ) which_cancel(trans, &cancel_bitmap );
if (trans->uas.status>=200) {
LM_ERR("failed to generate %d reply when a final %d was sent out\n",
code, trans->uas.status);
goto error2;
}
rb = & trans->uas.response;
rb->activ_type=code;
trans->uas.status = code;
buf_len = rb->buffer.s ? len : len + REPLY_OVERBUFFER_LEN;
rb->buffer.s = (char*)shm_resize( rb->buffer.s, buf_len );
/* puts the reply's buffer to uas.response */
if (! rb->buffer.s ) {
LM_ERR("failed to allocate shmem buffer\n");
goto error3;
}
update_local_tags(trans, bm, rb->buffer.s, buf);
rb->buffer.len = len ;
memcpy( rb->buffer.s , buf , len );
/* needs to be protected too because what timers are set depends
on current transactions status */
/* t_update_timers_after_sending_reply( rb ); */
trans->relaied_reply_branch=-2;
if (lock) UNLOCK_REPLIES( trans );
/* do UAC cleanup procedures in case we generated
a final answer whereas there are pending UACs */
if (code>=200) {
if ( is_local(trans) ) {
LM_DBG("local transaction completed\n");
if ( has_tran_tmcbs(trans, TMCB_LOCAL_COMPLETED) ) {
run_trans_callbacks( TMCB_LOCAL_COMPLETED, trans,
0, FAKED_REPLY, code);
}
} else {
/* run the PRE send callbacks */
if ( has_tran_tmcbs(trans, TMCB_RESPONSE_PRE_OUT) ) {
cb_s.s = buf;
cb_s.len = len;
set_extra_tmcb_params( &cb_s, &rb->dst);
if (lock)
run_trans_callbacks_locked( TMCB_RESPONSE_PRE_OUT, trans,
trans->uas.request, FAKED_REPLY, code);
else
run_trans_callbacks( TMCB_RESPONSE_PRE_OUT, trans,
trans->uas.request, FAKED_REPLY, code);
}
}
if (!is_hopbyhop_cancel(trans)) {
cleanup_uac_timers( trans );
if (is_invite(trans)) cancel_uacs( trans, cancel_bitmap );
/* for auth related replies, we do not do retransmission
(via set_final_timer()), but only wait for a final
reply (put_on_wait() ) - see RFC 3261 (26.3.2.4 DoS Protection) */
if ((code != 401) && (code != 407))
set_final_timer( trans );
else
put_on_wait(trans);
}
}
/* send it out : response.dst.send_sock is valid all the time now,
* as it's taken from original request -bogdan */
if (!trans->uas.response.dst.send_sock) {
LM_CRIT("send_sock is NULL\n");
}
SEND_PR_BUFFER( rb, buf, len );
LM_DBG("reply sent out. buf=%p: %.9s..., "
"shmem=%p: %.9s\n", buf, buf, rb->buffer.s, rb->buffer.s );
/* run the POST send callbacks */
if (code>=200&&!is_local(trans)&&has_tran_tmcbs(trans,TMCB_RESPONSE_OUT)) {
cb_s.s = buf;
cb_s.len = len;
set_extra_tmcb_params( &cb_s, &rb->dst);
if (lock)
run_trans_callbacks_locked( TMCB_RESPONSE_OUT, trans,
trans->uas.request, FAKED_REPLY, code);
else
run_trans_callbacks( TMCB_RESPONSE_OUT, trans,
trans->uas.request, FAKED_REPLY, code);
}
pkg_free( buf ) ;
stats_trans_rpl( code, 1 /*local*/ );
LM_DBG("finished\n");
return 1;
error3:
error2:
if (lock) UNLOCK_REPLIES( trans );
pkg_free ( buf );
error:
/* do UAC cleanup */
cleanup_uac_timers( trans );
if ( is_invite(trans) ) cancel_uacs( trans, cancel_bitmap );
/* we did not succeed -- put the transaction on wait */
put_on_wait(trans);
return -1;
}
/* This function is called whenever a reply for our module is received;
* we need to register this function on module initialization;
* Returns : 0 - core router stops
* 1 - core router relay statelessly
*/
int reply_received( struct sip_msg *p_msg )
{
int msg_status;
int last_uac_status;
int branch;
int reply_status;
utime_t timer;
/* has the transaction completed now and we need to clean-up? */
branch_bm_t cancel_bitmap;
struct ua_client *uac;
struct cell *t;
struct usr_avp **backup_list;
unsigned int has_reply_route;
set_t(T_UNDEFINED);
/* make sure we know the associated transaction ... */
if (t_check(p_msg, &branch ) == -1) goto not_found;
/*... if there is none, tell the core router to fwd statelessly */
t = get_t();
if ((t == 0) || (t == T_UNDEFINED)) goto not_found;
cancel_bitmap=0;
msg_status=p_msg->REPLY_STATUS;
uac=&t->uac[branch];
LM_DBG("org. status uas=%d, uac[%d]=%d local=%d is_invite=%d)\n",
t->uas.status, branch, uac->last_received,
is_local(t), is_invite(t));
last_uac_status=uac->last_received;
if_update_stat( tm_enable_stats, tm_rcv_rpls , 1);
/* it's a cancel which is not e2e ? */
if ( get_cseq(p_msg)->method_id==METHOD_CANCEL && is_invite(t) ) {
/* ... then just stop timers */
reset_timer( &uac->local_cancel.retr_timer);
if ( msg_status >= 200 ) {
reset_timer( &uac->local_cancel.fr_timer);
}
LM_DBG("reply to local CANCEL processed\n");
goto done;
}
/* *** stop timers *** */
/* stop retransmission */
reset_timer(&uac->request.retr_timer);
/* stop final response timer only if I got a final response */
if ( msg_status >= 200 ) {
reset_timer( &uac->request.fr_timer);
}
/* acknowledge negative INVITE replies (do it before detailed
* on_reply processing, which may take very long, like if it
* is attempted to establish a TCP connection to a fail-over dst */
if (is_invite(t) && ((msg_status >= 300) ||
(is_local(t) && !no_autoack(t) && msg_status >= 200) )) {
if (send_ack(p_msg, t, branch)!=0)
LM_ERR("failed to send ACK (local=%s)\n", is_local(t)?"yes":"no");
}
_tm_branch_index = branch;
/* processing of on_reply block */
has_reply_route = (t->on_reply) || (t->uac[branch].on_reply);
if (has_reply_route) {
if (onreply_avp_mode) {
/* lock the reply*/
LOCK_REPLIES( t );
/* set the as avp_list the one from transaction */
backup_list = set_avp_list(&t->user_avps);
} else {
backup_list = 0;
}
/* transfer transaction flag to branch context */
p_msg->flags = t->uas.request->flags;
setb0flags(t->uac[branch].br_flags);
/* run block - first per branch and then global one */
if ( t->uac[branch].on_reply &&
(run_top_route(onreply_rlist[t->uac[branch].on_reply].a,p_msg)
&ACT_FL_DROP) && (msg_status<200) ) {
if (onreply_avp_mode) {
UNLOCK_REPLIES( t );
set_avp_list( backup_list );
}
LM_DBG("dropping provisional reply %d\n", msg_status);
goto done;
}
if ( t->on_reply && (run_top_route(onreply_rlist[t->on_reply].a,p_msg)
&ACT_FL_DROP) && (msg_status<200) ) {
if (onreply_avp_mode) {
UNLOCK_REPLIES( t );
set_avp_list( backup_list );
}
LM_DBG("dropping provisional reply %d\n", msg_status);
goto done;
}
/* transfer current message context back to t */
t->uac[branch].br_flags = getb0flags();
t->uas.request->flags = p_msg->flags;
if (onreply_avp_mode)
/* restore original avp list */
set_avp_list( backup_list );
}
if (!onreply_avp_mode || !has_reply_route)
/* lock the reply*/
LOCK_REPLIES( t );
/* mark that the UAC received replies */
uac->flags |= T_UAC_HAS_RECV_REPLY;
/* we fire a cancel on spot if (a) branch is marked "to be canceled" or (b)
* the whole transaction was canceled (received cancel) and no cancel sent
* yet on this branch; and of course, only if a provisional reply :) */
if (t->uac[branch].flags&T_UAC_TO_CANCEL_FLAG ||
((t->flags&T_WAS_CANCELLED_FLAG) && !t->uac[branch].local_cancel.buffer.s)) {
if ( msg_status < 200 )
/* reply for an UAC with a pending cancel -> do cancel now */
cancel_branch(t, branch);
/* reset flag */
t->uac[branch].flags &= ~(T_UAC_TO_CANCEL_FLAG);
}
if (is_local(t)) {
reply_status = local_reply(t,p_msg, branch,msg_status,&cancel_bitmap);
if (reply_status == RPS_COMPLETED) {
cleanup_uac_timers(t);
if (is_invite(t)) cancel_uacs(t, cancel_bitmap);
/* There is no need to call set_final_timer because we know
* that the transaction is local */
put_on_wait(t);
}
} else {
reply_status = relay_reply(t,p_msg,branch,msg_status,&cancel_bitmap);
/* clean-up the transaction when transaction completed */
if (reply_status == RPS_COMPLETED) {
/* no more UAC FR/RETR (if I received a 2xx, there may
* be still pending branches ...
*/
cleanup_uac_timers(t);
if (is_invite(t)) cancel_uacs(t, cancel_bitmap);
/* FR for negative INVITES, WAIT anything else */
/* set_final_timer(t); */
}
}
if (reply_status!=RPS_PROVISIONAL)
goto done;
/* update FR/RETR timers on provisional replies */
if (msg_status < 200 && (restart_fr_on_each_reply ||
((last_uac_status<msg_status) &&
((msg_status >= 180) || (last_uac_status == 0)))
) ) { /* provisional now */
if (is_invite(t)) {
/* invite: change FR to longer FR_INV, do not
* attempt to restart retransmission any more
*/
backup_list = set_avp_list(&t->user_avps);
if (!fr_inv_avp2timer(&timer)) {
LM_DBG("FR_INV_TIMER = %lld\n", timer);
set_timer(&uac->request.fr_timer,
FR_INV_TIMER_LIST, &timer);
} else {
set_timer(& uac->request.fr_timer, FR_INV_TIMER_LIST, 0);
}
set_avp_list(backup_list);
} else {
/* non-invite: restart retransmissions (slow now) */
uac->request.retr_list = RT_T2;
set_timer(&uac->request.retr_timer, RT_T2, 0);
}
} /* provisional replies */
done:
/* we are done with the transaction, so unref it - the reference
* was incremented by t_check() function -bogdan*/
t_unref(p_msg);
/* don't try to relay statelessly neither on success
* (we forwarded statefully) nor on error; on troubles,
* simply do nothing; that will make the other party to
* retransmit; hopefuly, we'll then be better off
*/
_tm_branch_index = 0;
return 0;
not_found:
set_t(T_UNDEFINED);
return 1;
}
/* this is the "UAC" above transaction layer; if a final reply
is received, it triggers a callback; note well -- it assumes
it is entered locked with REPLY_LOCK and it returns unlocked!
*/
enum rps local_reply( struct cell *t, struct sip_msg *p_msg, int branch,
unsigned int msg_status, branch_bm_t *cancel_bitmap)
{
/* how to deal with replies for local transaction */
int local_store, local_winner;
enum rps reply_status;
struct sip_msg *winning_msg;
int winning_code;
int totag_retr;
/* branch_bm_t cancel_bitmap; */
/* keep warning 'var might be used un-inited' silent */
winning_msg=0;
winning_code=0;
totag_retr=0;
*cancel_bitmap=0;
reply_status=t_should_relay_response( t, msg_status, branch,
&local_store, &local_winner, cancel_bitmap, p_msg );
LM_DBG("branch=%d, save=%d, winner=%d\n",
branch, local_store, local_winner );
if (local_store) {
if (!store_reply(t, branch, p_msg))
goto error;
}
if (local_winner>=0) {
winning_msg= branch==local_winner
? p_msg : t->uac[local_winner].reply;
if (winning_msg==FAKED_REPLY) {
winning_code = branch==local_winner
? msg_status : t->uac[local_winner].last_received;
} else {
winning_code=winning_msg->REPLY_STATUS;
}
t->uas.status = winning_code;
stats_trans_rpl( winning_code, (winning_msg==FAKED_REPLY)?1:0 );
if (is_invite(t) && winning_msg!=FAKED_REPLY
&& winning_code>=200 && winning_code <300
&& has_tran_tmcbs(t,
TMCB_RESPONSE_OUT|TMCB_RESPONSE_PRE_OUT) ) {
totag_retr=update_totag_set(t, winning_msg);
}
}
UNLOCK_REPLIES(t);
if ( local_winner >= 0 ) {
if (winning_code < 200) {
if (!totag_retr && has_tran_tmcbs(t,TMCB_LOCAL_RESPONSE_OUT)) {
LM_DBG("Passing provisional reply %d to FIFO application\n",
winning_code);
run_trans_callbacks( TMCB_LOCAL_RESPONSE_OUT, t, 0,
winning_msg, winning_code);
}
} else {
LM_DBG("local transaction completed\n");
if (!totag_retr && has_tran_tmcbs(t,TMCB_LOCAL_COMPLETED) ) {
run_trans_callbacks( TMCB_LOCAL_COMPLETED, t, 0,
winning_msg, winning_code );
}
}
}
return reply_status;
error:
which_cancel(t, cancel_bitmap);
UNLOCK_REPLIES(t);
cleanup_uac_timers(t);
if ( get_cseq(p_msg)->method_id==METHOD_INVITE )
cancel_uacs( t, *cancel_bitmap );
put_on_wait(t);
return RPS_ERROR;
}
/* this is the code which decides what and when shall be relayed
upstream; note well -- it assumes it is entered locked with
REPLY_LOCK and it returns unlocked!
*/
enum rps relay_reply( struct cell *t, struct sip_msg *p_msg, int branch,
unsigned int msg_status, branch_bm_t *cancel_bitmap )
{
int relay;
int save_clone;
char *buf;
/* length of outbound reply */
unsigned int res_len;
int relayed_code;
struct sip_msg *relayed_msg;
struct bookmark bm;
int totag_retr;
enum rps reply_status;
/* retransmission structure of outbound reply and request */
struct retr_buf *uas_rb;
str cb_s;
str text;
/* keep compiler warnings about use of uninit vars silent */
res_len=0;
buf=0;
relayed_msg=0;
relayed_code=0;
totag_retr=0;
/* remember, what was sent upstream to know whether we are
* forwarding a first final reply or not */
/* *** store and relay message as needed *** */
reply_status = t_should_relay_response(t, msg_status, branch,
&save_clone, &relay, cancel_bitmap, p_msg );
LM_DBG("branch=%d, save=%d, relay=%d\n",
branch, save_clone, relay );
/* store the message if needed */
if (save_clone) /* save for later use, typically branch picking */
{
if (!store_reply( t, branch, p_msg ))
goto error01;
}
uas_rb = & t->uas.response;
if (relay >= 0 ) {
/* initialize sockets for outbound reply */
uas_rb->activ_type=msg_status;
t->relaied_reply_branch = relay;
/* try building the outbound reply from either the current
* or a stored message */
relayed_msg = branch==relay ? p_msg : t->uac[relay].reply;
if (relayed_msg==FAKED_REPLY) {
relayed_code = branch==relay
? msg_status : t->uac[relay].last_received;
text.s = error_text(relayed_code);
text.len = strlen(text.s); /* FIXME - bogdan*/
if (relayed_code>=180 && t->uas.request->to
&& (get_to(t->uas.request)->tag_value.s==0
|| get_to(t->uas.request)->tag_value.len==0)) {
calc_crc_suffix( t->uas.request, tm_tag_suffix );
buf = build_res_buf_from_sip_req(
relayed_code,
&text,
&tm_tag,
t->uas.request, &res_len, &bm );
} else {
buf = build_res_buf_from_sip_req( relayed_code,
&text, 0/* no to-tag */,
t->uas.request, &res_len, &bm );
}
} else {
/* run callbacks for all types of responses -
* even if they are shmem-ed or not */
if (has_tran_tmcbs(t,TMCB_RESPONSE_FWDED) ) {
run_trans_callbacks( TMCB_RESPONSE_FWDED, t, t->uas.request,
relayed_msg, msg_status );
}
relayed_code=relayed_msg->REPLY_STATUS;
buf = build_res_buf_from_sip_res( relayed_msg, &res_len,
uas_rb->dst.send_sock);
/* remove all lumps which are not in shm
* added either by build_res_buf_from_sip_res, or by
* the callbacks that have been called with shmem-ed messages - vlad */
if (branch!=relay) {
del_notflaged_lumps( &(relayed_msg->add_rm), LUMPFLAG_SHMEM);
del_notflaged_lumps( &(relayed_msg->body_lumps), LUMPFLAG_SHMEM);
}
}
if (!buf) {
LM_ERR("no mem for outbound reply buffer\n");
goto error02;
}
/* attempt to copy the message to UAS's shmem:
- copy to-tag for ACK matching as well
- allocate little a bit more for provisional as
larger messages are likely to follow and we will be
able to reuse the memory frag
*/
uas_rb->buffer.s = (char*)shm_resize( uas_rb->buffer.s, res_len +
(msg_status<200 ? REPLY_OVERBUFFER_LEN : 0));
if (!uas_rb->buffer.s) {
LM_ERR("no more share memory\n");
goto error03;
}
uas_rb->buffer.len = res_len;
memcpy( uas_rb->buffer.s, buf, res_len );
if (relayed_msg==FAKED_REPLY) { /* to-tags for local replies */
update_local_tags(t, &bm, uas_rb->buffer.s, buf);
}
stats_trans_rpl( relayed_code, (relayed_msg==FAKED_REPLY)?1:0 );
/* update the status ... */
t->uas.status = relayed_code;
if (is_invite(t) && relayed_msg!=FAKED_REPLY
&& relayed_code>=200 && relayed_code < 300
&& has_tran_tmcbs( t,
TMCB_RESPONSE_OUT|TMCB_RESPONSE_PRE_OUT)) {
totag_retr=update_totag_set(t, relayed_msg);
}
}; /* if relay ... */
UNLOCK_REPLIES( t );
/* Setup retransmission timer _before_ the reply is sent
* to avoid race conditions
*/
if (reply_status == RPS_COMPLETED) {
/* for auth related replies, we do not do retransmission
(via set_final_timer()), but only wait for a final
reply (put_on_wait() ) - see RFC 3261 (26.3.2.4 DoS Protection) */
if ((relayed_code != 401) && (relayed_code != 407))
set_final_timer(t);
else
put_on_wait(t);
}
/* send it now (from the private buffer) */
if (relay >= 0) {
/* run the PRE sending out callback */
if (!totag_retr && has_tran_tmcbs(t, TMCB_RESPONSE_PRE_OUT) ) {
cb_s.s = buf;
cb_s.len = res_len;
set_extra_tmcb_params( &cb_s, &uas_rb->dst);
run_trans_callbacks_locked(TMCB_RESPONSE_PRE_OUT,t,t->uas.request,
relayed_msg, relayed_code);
}
SEND_PR_BUFFER( uas_rb, buf, res_len );
LM_DBG("sent buf=%p: %.9s..., shmem=%p: %.9s\n",
buf, buf, uas_rb->buffer.s, uas_rb->buffer.s );
/* run the POST sending out callback */
if (!totag_retr && has_tran_tmcbs(t, TMCB_RESPONSE_OUT) ) {
cb_s.s = buf;
cb_s.len = res_len;
set_extra_tmcb_params( &cb_s, &uas_rb->dst);
run_trans_callbacks_locked( TMCB_RESPONSE_OUT, t, t->uas.request,
relayed_msg, relayed_code);
}
pkg_free( buf );
}
/* success */
return reply_status;
error03:
pkg_free( buf );
error02:
if (save_clone) {
if (t->uac[branch].reply!=FAKED_REPLY)
sip_msg_free( t->uac[branch].reply );
t->uac[branch].reply = NULL;
}
error01:
text.s = "Reply processing error";
text.len = sizeof("Reply processing error")-1;
t_reply_unsafe( t, t->uas.request, 500, &text );
UNLOCK_REPLIES(t);
if (is_invite(t)) cancel_uacs( t, *cancel_bitmap );
/* a serious error occurred -- attempt to send an error reply;
it will take care of clean-ups */
/* failure */
return RPS_ERROR;
}
/* Continues the SIP request processing previously saved by
* t_suspend(). The script does not continue from the same
* point, but a separate route block is executed instead.
*
* Return value:
* 0 - success
* <0 - failure
*/
int t_continue(unsigned int hash_index, unsigned int label,
struct action *route)
{
struct cell *t;
struct sip_msg faked_req;
struct cancel_info cancel_data;
int branch;
struct ua_client *uac =NULL;
int ret;
int cb_type;
int msg_status;
int last_uac_status;
int reply_status;
int do_put_on_wait;
struct hdr_field *hdr, *prev = 0, *tmp = 0;
if (t_lookup_ident(&t, hash_index, label) < 0) {
LM_ERR("transaction not found\n");
return -1;
}
if (!(t->flags & T_ASYNC_SUSPENDED)) {
LM_WARN("transaction is not suspended [%u:%u]\n", hash_index, label);
return -2;
}
if (t->flags & T_CANCELED) {
t->flags &= ~T_ASYNC_SUSPENDED;
/* The transaction has already been canceled,
* needless to continue */
UNREF(t); /* t_unref would kill the transaction */
/* reset T as we have no working T anymore */
set_t(T_UNDEFINED, T_BR_UNDEFINED);
return 1;
}
/* The transaction has to be locked to protect it
* form calling t_continue() multiple times simultaneously */
LOCK_ASYNC_CONTINUE(t);
t->flags |= T_ASYNC_CONTINUE; /* we can now know anywhere in kamailio
* that we are executing post a suspend */
/* which route block type were we in when we were suspended */
cb_type = FAILURE_CB_TYPE;;
switch (t->async_backup.backup_route) {
case REQUEST_ROUTE:
cb_type = FAILURE_CB_TYPE;
break;
case FAILURE_ROUTE:
cb_type = FAILURE_CB_TYPE;
break;
case TM_ONREPLY_ROUTE:
cb_type = ONREPLY_CB_TYPE;
break;
case BRANCH_ROUTE:
cb_type = FAILURE_CB_TYPE;
break;
}
if(t->async_backup.backup_route != TM_ONREPLY_ROUTE){
branch = t->async_backup.blind_uac; /* get the branch of the blind UAC setup
* during suspend */
if (branch >= 0) {
stop_rb_timers(&t->uac[branch].request);
if (t->uac[branch].last_received != 0) {
/* Either t_continue() has already been
* called or the branch has already timed out.
* Needless to continue. */
t->flags &= ~T_ASYNC_SUSPENDED;
UNLOCK_ASYNC_CONTINUE(t);
UNREF(t); /* t_unref would kill the transaction */
return 1;
}
/* Set last_received to something >= 200,
* the actual value does not matter, the branch
* will never be picked up for response forwarding.
* If last_received is lower than 200,
* then the branch may tried to be cancelled later,
* for example when t_reply() is called from
* a failure route => deadlock, because both
* of them need the reply lock to be held. */
t->uac[branch].last_received=500;
uac = &t->uac[branch];
}
/* else
Not a huge problem, fr timer will fire, but CANCEL
will not be sent. last_received will be set to 408. */
/* We should not reset kr here to 0 as it's quite possible before continuing the dev. has correctly set the
* kr by, for example, sending a transactional reply in code - resetting here will cause a dirty log message
* "WARNING: script writer didn't release transaction" to appear in log files. TODO: maybe we need to add
* a special kr for async?
* reset_kr();
*/
/* fake the request and the environment, like in failure_route */
if (!fake_req(&faked_req, t->uas.request, 0 /* extra flags */, uac)) {
LM_ERR("building fake_req failed\n");
ret = -1;
goto kill_trans;
}
faked_env( t, &faked_req, 1);
/* execute the pre/post -script callbacks based on original route block */
if (exec_pre_script_cb(&faked_req, cb_type)>0) {
if (run_top_route(route, &faked_req, 0)<0)
LM_ERR("failure inside run_top_route\n");
exec_post_script_cb(&faked_req, cb_type);
}
/* TODO: save_msg_lumps should clone the lumps to shm mem */
/* restore original environment and free the fake msg */
faked_env( t, 0, 1);
free_faked_req(&faked_req, t);
/* update the flags */
t->uas.request->flags = faked_req.flags;
if (t->uas.status < 200) {
/* No final reply has been sent yet.
* Check whether or not there is any pending branch.
*/
for ( branch = 0;
branch < t->nr_of_outgoings;
branch++
) {
if (t->uac[branch].last_received < 200)
break;
}
if (branch == t->nr_of_outgoings) {
/* There is not any open branch so there is
* no chance that a final response will be received. */
ret = 0;
goto kill_trans;
}
}
} else {
branch = t->async_backup.backup_branch;
init_cancel_info(&cancel_data);
LM_DBG("continuing from a suspended reply"
" - resetting the suspend branch flag\n");
if (t->uac[branch].reply) {
t->uac[branch].reply->msg_flags &= ~FL_RPL_SUSPENDED;
} else {
LM_WARN("no reply in t_continue for branch. not much we can do\n");
return 0;
}
if (t->uas.request) t->uas.request->msg_flags&= ~FL_RPL_SUSPENDED;
faked_env( t, t->uac[branch].reply, 1);
if (exec_pre_script_cb(t->uac[branch].reply, cb_type)>0) {
if (run_top_route(route, t->uac[branch].reply, 0)<0){
LOG(L_ERR, "ERROR: t_continue_reply: Error in run_top_route\n");
}
exec_post_script_cb(t->uac[branch].reply, cb_type);
}
LM_DBG("restoring previous environment");
faked_env( t, 0, 1);
/*lock transaction replies - will be unlocked when reply is relayed*/
LOCK_REPLIES( t );
if ( is_local(t) ) {
LM_DBG("t is local - sending reply with status code: [%d]\n",
t->uac[branch].reply->first_line.u.reply.statuscode);
reply_status = local_reply( t, t->uac[branch].reply, branch,
t->uac[branch].reply->first_line.u.reply.statuscode,
&cancel_data );
if (reply_status == RPS_COMPLETED) {
/* no more UAC FR/RETR (if I received a 2xx, there may
* be still pending branches ...
*/
cleanup_uac_timers( t );
if (is_invite(t)) cancel_uacs(t, &cancel_data, F_CANCEL_B_KILL);
/* There is no need to call set_final_timer because we know
* that the transaction is local */
put_on_wait(t);
}else if (unlikely(cancel_data.cancel_bitmap)){
/* cancel everything, even non-INVITEs (e.g in case of 6xx), use
* cancel_b_method for canceling unreplied branches */
cancel_uacs(t, &cancel_data, cfg_get(tm,tm_cfg, cancel_b_flags));
}
} else {
LM_DBG("t is not local - relaying reply with status code: [%d]\n",
t->uac[branch].reply->first_line.u.reply.statuscode);
do_put_on_wait = 0;
if(t->uac[branch].reply->first_line.u.reply.statuscode>=200){
do_put_on_wait = 1;
}
reply_status=relay_reply( t, t->uac[branch].reply, branch,
t->uac[branch].reply->first_line.u.reply.statuscode,
&cancel_data, do_put_on_wait );
if (reply_status == RPS_COMPLETED) {
/* no more UAC FR/RETR (if I received a 2xx, there may
be still pending branches ...
*/
cleanup_uac_timers( t );
/* 2xx is a special case: we can have a COMPLETED request
* with branches still open => we have to cancel them */
if (is_invite(t) && cancel_data.cancel_bitmap)
cancel_uacs( t, &cancel_data, F_CANCEL_B_KILL);
/* FR for negative INVITES, WAIT anything else */
/* Call to set_final_timer is embedded in relay_reply to avoid
* race conditions when reply is sent out and an ACK to stop
* retransmissions comes before retransmission timer is set.*/
}else if (unlikely(cancel_data.cancel_bitmap)){
/* cancel everything, even non-INVITEs (e.g in case of 6xx), use
* cancel_b_method for canceling unreplied branches */
cancel_uacs(t, &cancel_data, cfg_get(tm,tm_cfg, cancel_b_flags));
}
}
t->uac[branch].request.flags|=F_RB_REPLIED;
if (reply_status==RPS_ERROR){
goto done;
}
/* update FR/RETR timers on provisional replies */
msg_status=t->uac[branch].reply->REPLY_STATUS;
last_uac_status=t->uac[branch].last_received;
if (is_invite(t) && msg_status<200 &&
( cfg_get(tm, tm_cfg, restart_fr_on_each_reply) ||
( (last_uac_status<msg_status) &&
((msg_status>=180) || (last_uac_status==0)) )
) ) { /* provisional now */
restart_rb_fr(& t->uac[branch].request, t->fr_inv_timeout);
t->uac[branch].request.flags|=F_RB_FR_INV; /* mark fr_inv */
}
}
done:
UNLOCK_ASYNC_CONTINUE(t);
if(t->async_backup.backup_route != TM_ONREPLY_ROUTE){
/* unref the transaction */
t_unref(t->uas.request);
} else {
tm_ctx_set_branch_index(T_BR_UNDEFINED);
/* unref the transaction */
t_unref(t->uac[branch].reply);
LOG(L_DBG,"DEBUG: t_continue_reply: Freeing earlier cloned reply\n");
/* free lumps that were added during reply processing */
del_nonshm_lump( &(t->uac[branch].reply->add_rm) );
del_nonshm_lump( &(t->uac[branch].reply->body_lumps) );
del_nonshm_lump_rpl( &(t->uac[branch].reply->reply_lump) );
/* free header's parsed structures that were added */
for( hdr=t->uac[branch].reply->headers ; hdr ; hdr=hdr->next ) {
if ( hdr->parsed && hdr_allocs_parse(hdr) &&
(hdr->parsed<(void*)t->uac[branch].reply ||
hdr->parsed>=(void*)t->uac[branch].end_reply)) {
clean_hdr_field(hdr);
hdr->parsed = 0;
}
}
/* now go through hdr_fields themselves and remove the pkg allocated space */
hdr = t->uac[branch].reply->headers;
while (hdr) {
if ( hdr && ((void*)hdr<(void*)t->uac[branch].reply ||
(void*)hdr>=(void*)t->uac[branch].end_reply)) {
//this header needs to be freed and removed form the list.
if (!prev) {
t->uac[branch].reply->headers = hdr->next;
} else {
prev->next = hdr->next;
}
tmp = hdr;
hdr = hdr->next;
pkg_free(tmp);
} else {
prev = hdr;
hdr = hdr->next;
}
}
sip_msg_free(t->uac[branch].reply);
t->uac[branch].reply = 0;
}
/*This transaction is no longer suspended so unsetting the SUSPEND flag*/
t->flags &= ~T_ASYNC_SUSPENDED;
return 0;
kill_trans:
t->flags &= ~T_ASYNC_SUSPENDED;
/* The script has hopefully set the error code. If not,
* let us reply with a default error. */
if ((kill_transaction_unsafe(t,
tm_error ? tm_error : E_UNSPEC)) <=0
) {
LOG(L_ERR, "ERROR: t_continue: "
"reply generation failed\n");
/* The transaction must be explicitely released,
* no more timer is running */
UNLOCK_ASYNC_CONTINUE(t);
t_release_transaction(t);
} else {
UNLOCK_ASYNC_CONTINUE(t);
}
if(t->async_backup.backup_route != TM_ONREPLY_ROUTE){
t_unref(t->uas.request);
} else {
/* unref the transaction */
t_unref(t->uac[branch].reply);
}
return ret;
}
/* atomic "new_tran" construct; it returns:
<0 on error
+1 if a request did not match a transaction
- it that was an ack, the calling function
shall forward statelessly
- otherwise it means, a new transaction was
introduced and the calling function
shall reply/relay/whatever_appropriate
0 on retransmission
*/
int t_newtran( struct sip_msg* p_msg )
{
int lret, my_err;
int canceled;
/* is T still up-to-date ? */
DBG("DEBUG: t_newtran: msg id=%d , global msg id=%d ,"
" T on entrance=%p\n",p_msg->id,global_msg_id,T);
if ( T && T!=T_UNDEFINED ) {
/* ERROR message moved to w_t_newtran */
DBG("DEBUG: t_newtran: "
"transaction already in process %p\n", T );
return E_SCRIPT;
}
global_msg_id = p_msg->id;
T = T_UNDEFINED;
/* first of all, parse everything -- we will store in shared memory
and need to have all headers ready for generating potential replies
later; parsing later on demand is not an option since the request
will be in shmem and applying parse_headers to it would intermix
shmem with pkg_mem
*/
if (parse_headers(p_msg, HDR_EOH_F, 0 )) {
LOG(L_ERR, "ERROR: t_newtran: parse_headers failed\n");
return E_BAD_REQ;
}
if ((p_msg->parsed_flag & HDR_EOH_F)!=HDR_EOH_F) {
LOG(L_ERR, "ERROR: t_newtran: EoH not parsed\n");
return E_OUT_OF_MEM;
}
/* t_lookup_requests attempts to find the transaction;
it also calls check_transaction_quadruple -> it is
safe to assume we have from/callid/cseq/to
*/
lret = t_lookup_request( p_msg, 1 /* leave locked if not found */,
&canceled );
/* on error, pass the error in the stack ... nothing is locked yet
if 0 is returned */
if (lret==0) return E_BAD_TUPEL;
/* transaction found, it's a retransmission */
if (lret>0) {
if (p_msg->REQ_METHOD==METHOD_ACK) {
t_release_transaction(T);
} else {
t_retransmit_reply(T);
}
/* things are done -- return from script */
return 0;
}
/* from now on, be careful -- hash table is locked */
if (lret==-2) { /* was it an e2e ACK ? if so, trigger a callback */
/* no callbacks? complete quickly */
if ( !has_tran_tmcbs(t_ack,TMCB_E2EACK_IN) ) {
UNLOCK_HASH(p_msg->hash_index);
return 1;
}
REF_UNSAFE(t_ack);
UNLOCK_HASH(p_msg->hash_index);
/* we don't call from within REPLY_LOCK -- that introduces
* a race condition; however, it is so unlikely and the
* impact is so small (callback called multiple times of
* multiple ACK/200s received in parallel), that we do not
* better waste time in locks */
if (unmatched_totag(t_ack, p_msg)) {
run_trans_callbacks( TMCB_E2EACK_IN , t_ack, p_msg, 0,
-p_msg->REQ_METHOD );
}
UNREF(t_ack);
return 1;
}
/* transaction not found, it's a new request (lret<0, lret!=-2);
establish a new transaction ... */
if (p_msg->REQ_METHOD==METHOD_ACK) { /* ... unless it is in ACK */
my_err=1;
goto new_err;
}
my_err=new_t(p_msg);
if (my_err<0) {
LOG(L_ERR, "ERROR: t_newtran: new_t failed\n");
goto new_err;
}
if (canceled) T->flags|=T_CANCELED; /* mark it for future ref. */
UNLOCK_HASH(p_msg->hash_index);
/* now, when the transaction state exists, check if
there is a meaningful Via and calculate it; better
do it now than later: state is established so that
subsequent retransmissions will be absorbed and will
not possibly block during Via DNS resolution; doing
it later would only burn more CPU as if there is an
error, we cannot relay later whatever comes out of the
the transaction
*/
if (!init_rb( &T->uas.response, p_msg)) {
LOG(L_ERR, "ERROR: t_newtran: unresolvable via1\n");
put_on_wait( T );
t_unref(p_msg);
return E_BAD_VIA;
}
return 1;
new_err:
UNLOCK_HASH(p_msg->hash_index);
return my_err;
}
inline static void final_response_handler( struct timer_link *fr_tl )
{
#define CANCEL_REASON_SIP_480 \
"Reason: SIP;cause=480;text=\"NO_ANSWER\"" CRLF
static context_p my_ctx = NULL;
context_p old_ctx;
struct retr_buf* r_buf;
struct cell *t;
if (fr_tl==0){
/* or BUG?, ignoring it for now */
LM_CRIT("final_response_handler(0) called\n");
return;
}
r_buf = get_fr_timer_payload(fr_tl);
t=r_buf->my_T;
# ifdef EXTRA_DEBUG
if (t->damocles)
{
LM_ERR("transaction %p scheduled for deletion and"
" called from FR timer\n",r_buf->my_T);
abort();
}
# endif
reset_timer( &(r_buf->retr_timer) );
/* the transaction is already removed from FR_LIST by the timer */
/* FR for local cancels.... */
if (r_buf->activ_type==TYPE_LOCAL_CANCEL)
{
LM_DBG("stop retr for Local Cancel\n");
return;
}
/* FR for replies (negative INVITE replies) */
if (r_buf->activ_type>0) {
# ifdef EXTRA_DEBUG
if (t->uas.request->REQ_METHOD!=METHOD_INVITE
|| t->uas.status < 200 ) {
LM_ERR("unknown type reply buffer\n");
abort();
}
# endif
put_on_wait( t );
return;
};
/* as this processing is outside the scope of other messages (it is
trigger from timer), a processing context must be attached to it */
old_ctx = current_processing_ctx;
if (my_ctx==NULL) {
my_ctx = context_alloc(CONTEXT_GLOBAL);
if (my_ctx==NULL) {
LM_ERR("failed to alloc new ctx in pkg\n");
}
}
memset( my_ctx, 0, context_size(CONTEXT_GLOBAL) );
current_processing_ctx = my_ctx;
/* set the T context too */
set_t( t );
/* out-of-lock do the cancel I/O */
if (is_invite(t) && should_cancel_branch(t, r_buf->branch) ) {
set_cancel_extra_hdrs( CANCEL_REASON_SIP_480, sizeof(CANCEL_REASON_SIP_480)-1);
cancel_branch(t, r_buf->branch );
set_cancel_extra_hdrs( NULL, 0);
}
/* lock reply processing to determine how to proceed reliably */
LOCK_REPLIES( t );
LM_DBG("Cancel sent out, sending 408 (%p)\n", t);
fake_reply(t, r_buf->branch, 408 );
/* flush the context */
if (current_processing_ctx==NULL)
my_ctx=NULL;
else
context_destroy(CONTEXT_GLOBAL, my_ctx);
/* switch back to the old context */
current_processing_ctx = old_ctx;
/* reset the T context */
init_t();
LM_DBG("done\n");
}
inline static void final_response_handler(
struct retr_buf *r_buf, struct cell *t)
{
int silent;
#ifdef USE_DNS_FAILOVER
/*int i;
int added_branches;
*/
int branch_ret;
int prev_branch;
ticks_t now;
#endif
#ifdef EXTRA_DEBUG
if(t->flags & T_IN_AGONY) {
LM_ERR("transaction %p scheduled for deletion and"
" called from FR timer (flags %x)\n",
t, t->flags);
abort();
}
#endif
/* FR for local cancels.... */
if(r_buf->rbtype == TYPE_LOCAL_CANCEL) {
#ifdef TIMER_DEBUG
LM_DBG("stop retr for local cancel\n");
#endif
return;
}
/* FR for replies (negative INVITE replies) */
if(r_buf->rbtype > 0) {
#ifdef EXTRA_DEBUG
if(t->uas.request->REQ_METHOD != METHOD_INVITE || t->uas.status < 200) {
LM_CRIT("BUG - unknown type reply buffer\n");
abort();
}
#endif
put_on_wait(t);
return;
};
/* lock reply processing to determine how to proceed reliably */
LOCK_REPLIES(t);
/* now it can be only a request retransmission buffer;
try if you can simply discard the local transaction
state without compellingly removing it from the
world */
silent =
/* don't go silent if disallowed globally ... */
cfg_get(tm, tm_cfg, noisy_ctimer) == 0
/* ... or for this particular transaction */
&& has_noisy_ctimer(t) == 0
/* not for UACs */
&& !is_local(t)
/* invites only */
&& is_invite(t)
/* parallel forking does not allow silent state discarding */
&& t->nr_of_outgoings == 1
/* on_negativ reply handler not installed -- serial forking
* could occur otherwise */
&& t->on_failure == 0
/* the same for FAILURE callbacks */
&& !has_tran_tmcbs(t, TMCB_ON_FAILURE_RO | TMCB_ON_FAILURE)
/* something received -- we will not be silent on error */
&& t->uac[r_buf->branch].last_received == 0;
if(silent) {
UNLOCK_REPLIES(t);
#ifdef EXTRA_DEBUG
LM_DBG("transaction silently dropped (%p), branch %d, last_received %d\n",
t, r_buf->branch, t->uac[r_buf->branch].last_received);
#endif
put_on_wait(t);
return;
}
#ifdef EXTRA_DEBUG
LM_DBG("stop retr. and send CANCEL (%p)\n", t);
#endif
if((r_buf->branch < sr_dst_max_branches)
&& /* r_buf->branch is always >=0 */
(t->uac[r_buf->branch].last_received == 0)
&& (t->uac[r_buf->branch].request.buffer
!= NULL) /* not a blind UAC */
) {
/* no reply received */
#ifdef USE_DST_BLACKLIST
if(r_buf->my_T && r_buf->my_T->uas.request
&& (r_buf->my_T->uas.request->REQ_METHOD
& cfg_get(tm, tm_cfg, tm_blst_methods_add)))
dst_blacklist_add(
BLST_ERR_TIMEOUT, &r_buf->dst, r_buf->my_T->uas.request);
#endif
#ifdef USE_DNS_FAILOVER
/* if this is an invite, the destination resolves to more ips, and
* it still hasn't passed more than fr_inv_timeout since we
* started, add another branch/uac */
if(cfg_get(core, core_cfg, use_dns_failover)) {
now = get_ticks_raw();
if((s_ticks_t)(t->end_of_life - now) > 0) {
branch_ret = add_uac_dns_fallback(
t, t->uas.request, &t->uac[r_buf->branch], 0);
prev_branch = -1;
while((branch_ret >= 0) && (branch_ret != prev_branch)) {
prev_branch = branch_ret;
branch_ret =
t_send_branch(t, branch_ret, t->uas.request, 0, 0);
}
}
}
#endif
}
fake_reply(t, r_buf->branch, 408);
}
/* atomic "new_tran" construct; it returns:
<0 on error
+1 if a request did not match a transaction
- it that was an ack, the calling function
shall forward statelessly
- otherwise it means, a new transaction was
introduced and the calling function
shall reply/relay/whatever_appropriate
0 on retransmission
*/
int t_newtran( struct sip_msg* p_msg, int full_uas )
{
int lret, my_err;
context_p ctx_backup;
/* is T still up-to-date ? */
LM_DBG("transaction on entrance=%p\n",T);
if ( T && T!=T_UNDEFINED ) {
LM_DBG("transaction already in process %p\n", T );
return E_SCRIPT;
}
T = T_UNDEFINED;
/* first of all, parse everything -- we will store in shared memory
and need to have all headers ready for generating potential replies
later; parsing later on demand is not an option since the request
will be in shmem and applying parse_headers to it would intermix
shmem with pkg_mem
*/
if (parse_headers(p_msg, HDR_EOH_F, 0 )<0) {
LM_ERR("parse_headers failed\n");
return E_BAD_REQ;
}
if ((p_msg->parsed_flag & HDR_EOH_F)!=HDR_EOH_F) {
LM_ERR("EoH not parsed\n");
return E_OUT_OF_MEM;
}
/* t_lookup_requests attempts to find the transaction;
it also calls check_transaction_quadruple -> it is
safe to assume we have from/callid/cseq/to
*/
lret = t_lookup_request( p_msg, 1 /* leave locked if not found */ );
/* on error, pass the error in the stack ... nothing is locked yet
if 0 is returned */
if (lret==0) return E_BAD_TUPEL;
/* transaction found, it's a retransmission */
if (lret>0) {
if (p_msg->REQ_METHOD==METHOD_ACK) {
t_release_transaction(T);
} else {
t_retransmit_reply(T);
}
/* hide the transaction from the upper layer */
t_unref( p_msg );
/* things are done -- return from script */
return 0;
}
/* from now on, be careful -- hash table is locked */
if (lret==-2) { /* was it an e2e ACK ? if so, trigger a callback */
if (e2eack_T->relaied_reply_branch==-2) {
/* if a ACK for a local replied transaction, release the
INVITE transaction and break the script -> simply absorb
the ACK request */
t_release_transaction(e2eack_T);
return 0;
}
LM_DBG("building branch for end2end ACK - flags=%X\n",e2eack_T->flags);
/* to ensure unigueness acros time and space, compute the ACK
* branch in the same maner as for INVITE, but put a t->branch
* value that cannot exist for that INVITE - as it is compute as
* an INVITE, it will not overlapp with other INVITEs or requests.
* But the faked value for t->branch guarantee no overalap with
* corresponding INVITE --bogdan */
if (!t_calc_branch(e2eack_T, e2eack_T->nr_of_outgoings+1,
p_msg->add_to_branch_s, &p_msg->add_to_branch_len )) {
LM_ERR("ACK branch computation failed\n");
}
return 1;
}
/* transaction not found, it's a new request (lret<0, lret!=-2);
establish a new transaction ... */
if (p_msg->REQ_METHOD==METHOD_ACK) /* ... unless it is in ACK */
return 1;
my_err=new_t(p_msg, full_uas);
if (my_err<0) {
LM_ERR("new_t failed\n");
goto new_err;
}
UNLOCK_HASH(p_msg->hash_index);
/* now, when the transaction state exists, check if
there is a meaningful Via and calculate it; better
do it now than later: state is established so that
subsequent retransmissions will be absorbed and will
not possibly block during Via DNS resolution; doing
it later would only burn more CPU as if there is an
error, we cannot relay later whatever comes out of the
the transaction
*/
if (!init_rb( &T->uas.response, p_msg)) {
LM_ERR("unresolvable via1\n");
put_on_wait( T );
t_unref(p_msg);
return E_BAD_VIA;
}
if (auto_100trying && p_msg->REQ_METHOD==METHOD_INVITE) {
ctx_backup = current_processing_ctx;
current_processing_ctx = NULL;
t_reply( T, p_msg , 100 , &relay_reason_100);
current_processing_ctx = ctx_backup;
}
return 1;
new_err:
UNLOCK_HASH(p_msg->hash_index);
return my_err;
}
