Hi, Duane!
The only thing that has changed is that the $var(x) no longer returns
"0" if it is not set, now it returns NULL. Therefore you should not
check the var for "0" but for NULL:
if ( $var(x) != "0"
should become:
if ( $var(x) != NULL
Best regards,
Răzvan Crainea
OpenSIPS Solutions
www.opensips-solutions.com
On 08/19/2014 04:36 AM, Duane Larson wrote:
I was running version 1.9 and just upgraded to 1.11.2. I was having
my issue on 1.9 and thought a newer version might fix my issue but it
is still occuring.
I am using dlg_val to keep up with parked calls on Asterisk so that if
someone needs to retrieve a parked call the caller is relayed to the
correct Asterisk server that actually has the parked call. For some
reason if someone first tries to retrieve a parked call it I see an
error of "no value in right expression" but if I call back a second
time the call is retrieved. I am not sure why the dlg_val would not
have a value the first time but the second time it all of a sudden has
been populated. Here is the syslog with xlog data and then I will
show my script.
Caller = 9014XX6XX8
Callee(Person parking call) = 9018X19XX4
Call Park Initiate Number = *700
Call Parked Number = *701
New Caller Picking up call = 9018X19XX0
Caller Calls Callee
Aug 18 20:03:58 SIPProxy02 /usr/local/sbin/opensips[26074]: Dialog
Before: td [50.57.54.156], rU [9018X19XX4] fU [19014XX6XX8] HostVar
[<null>]
Aug 18 20:03:58 SIPProxy02 /usr/local/sbin/opensips[26074]: About to
Route to Asterisk the From User Display name is the following fn [<null>]
Aug 18 20:03:58 SIPProxy02 /usr/local/sbin/opensips[26074]: ToAsterisk
Route Before PSTN call IF check fU[19014XX6XX8] tU[9018X19XX4]
Callee is parking call
Aug 18 20:04:13 SIPProxy02 /usr/local/sbin/opensips[26077]: The Caller
is a Local customer fu - [sip:[email protected]
<mailto:sip%[email protected]>]
Aug 18 20:04:13 SIPProxy02 /usr/local/sbin/opensips[26077]: Dialog
Before: td [launchyc.com <http://launchyc.com>], rU [*700] fU
[9018X19XX4] HostVar [<null>]
Aug 18 20:04:13 SIPProxy02 /usr/local/sbin/opensips[26077]: Dialog 2:
9018X19XX4 has another ongoing, on host sip:108.X.X.17
Aug 18 20:04:13 SIPProxy02 /usr/local/sbin/opensips[26077]: ToAsterisk
Route Before PSTN call IF check fU[9018X19XX4] tU[*700]
New Caller trying to pick up call at *701 and it fails
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]: The Caller
is a Local customer fu - [sip:[email protected]
<mailto:sip%[email protected]>]
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]: Dialog
Before: td [launchyc.com <http://launchyc.com>], rU [*701] fU
[9018X19XX0] HostVar [<null>]
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]: Dialog 3:
9018X19XX0 Retrieving Parked Call on host <null>
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]:
ERROR:core:eval_elem: invalid string operands
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]:
WARNING:core:do_assign: no value in right expression on line 2159
Aug 18 20:04:40 SIPProxy02 /usr/local/sbin/opensips[26076]: ToAsterisk
Route Before PSTN call IF check fU[9018X19XX0] tU[*701]
Second time trying to pick up parked call and everything works as it
should
Aug 18 20:04:56 SIPProxy02 /usr/local/sbin/opensips[26077]: The Caller
is a Local customer fu - [sip:[email protected]
<mailto:sip%[email protected]>]
Aug 18 20:04:56 SIPProxy02 /usr/local/sbin/opensips[26077]: Dialog
Before: td [launchyc.com <http://launchyc.com>], rU [*701] fU
[9018X19XX0] HostVar [sip:108.X.X.17]
Aug 18 20:04:56 SIPProxy02 /usr/local/sbin/opensips[26077]: Dialog 3:
9018X19XX0 Retrieving Parked Call on host sip:108.X.X.17
Aug 18 20:04:56 SIPProxy02 /usr/local/sbin/opensips[26077]: ToAsterisk
Route Before PSTN call IF check fU[9018X19XX0] tU[*701]
Script Section
### - We need to see if someone in the domain parked a call
### - If $var(x) doesn't equal 0 then our second ElseIf below
will be True
get_dialog_info("host","$var(x)","parkedcall","$td");
xlog("Dialog Before: td [$td], rU [$rU] fU [$fU] HostVar [$var(x)]\n");
## -- This is required so that if a Customer wants to do an
Attended Transfer we send him to the
## -- same Asterisk server his first call is already
terminated to.
## -- We also make sure the number doesn't start with the
customers Voicemail number so that calls to voicemail don't always
## -- get routed to the same Asterisk server
if ( get_dialog_info("host","$var(x)","caller","$fU") ||
get_dialog_info("host","$var(x)","caller","$rU") && $rU !~ "^\*555") {
xlog("Dialog 1: $fU has another ongoing, on host $var(x)\n");
#route to host $var(x)
$du = "sip:" + $rU + "@" + $(var(x){s.substr,4,0}) +
":5060";
### - We need to keep up with Parked calls if the
attended transfer is to a *700 number
if ( !match_dialog() )
{
create_dialog();
}
if($rU =~ "^\*7+"){
### -- Someone is parking a call
$dlg_val(parkedcall) = $td;
}
$dlg_val(host) = $du;
} else if ( get_dialog_info("host","$var(x)","callee","$rU")
|| get_dialog_info("host","$var(x)","callee","$fU") && $rU !~ "^\*555") {
#route to host $var(x)
xlog("Dialog 2: $fU has another ongoing, on host $var(x)\n");
$du = "sip:" + $rU + "@" + $(var(x){s.substr,4,0}) +
":5060";
### - We need to keep up with Parked calls if the
attended transfer is to a *700 number
if ( !match_dialog() )
{
create_dialog();
}
if($rU =~ "^\*7+"){
### -- Someone is parking a call
$dlg_val(parkedcall) = $td;
}
$dlg_val(host) = $du;
} else if ( $var(x) != "0" && $rU =~ "^\*7+") {
### -- Someone in domain X has parked a call and we
need to send this caller to the same Asterisk server so they can
### -- pick up the parked call
xlog("Dialog 3: $fU Retrieving Parked Call on host $var(x)\n");
$du = "sip:" + $rU + "@" + $(var(x){s.substr,4,0}) +
":5060";
} else {
if ( !match_dialog() )
{
create_dialog();
}
$dlg_val(caller) = $fU;
$dlg_val(callee) = $rU;
# Had to comment this out because of Asterisk bug.
See statement below
load_balance("100","sip");
if ($retcode<0) {
sl_send_reply("500","Service full");
exit;
}
$dlg_val(host) = $du;
# arm a failure route for be able to catch a failure
event and to do
# failover to the next available destination
### - Set timeout to failover to other Load Balancer
#$T_fr_inv_timeout = "5";
$T_fr_timeout = 3;
#$T_fr_timeout = "8";
t_on_failure("LB_failed");
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