[OpenSIPS-Users] Route_to_gw not pushing gw_id to the first index of avp

[Newlin, Ben]

Sorry, actually the documentation confused me.

You are correct in the way that it should work if the do_routing() and route_to_gw() are really pushing the functions on the end of the AVP. However, they must not be doing that because that is not the operation. To modify your example:

# first time avp_gw_id is set
is_from_gw(, i);   # function adds gw1 to AVP

If I access the AVP without an index I get gw1.

route_to_gw("gw2,gw3,gw4");
# function adds gw2, gw3, gw4 to AVP

If I access the AVP without an index I still get gw1. Accessing AVP[1] gives gw2.

Ben Newlin

From: <Newlin>, "Newlin, Ben"
Reply-To: OpenSIPS users mailling list
Date: Wednesday, July 1, 2015 at 2:40 PM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] Route_to_gw not pushing gw_id to the first index of avp

No, that is wrong.

"If no index is given, the first value will be returned.” [1]

 [1] http://www.opensips.org/Documentation/Script-CoreVar-1-11#toc2

Ben Newlin

From: <Podrigal>, Aron
Reply-To: OpenSIPS users mailling list
Date: Wednesday, July 1, 2015 at 1:29 PM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] Route_to_gw not pushing gw_id to the first index of avp

When accessing an avp without explicit index isn't it returning the last index?

# first time svp_gw_id is set
is_from_gw(, i);   #  avp now has (1)

route_to_gw("gw2,gw3,gw4");
# avp now has (gw1, gw2);

if we now access the avp, we can either get explicitly the specific index, or we get the last index which is `gw2`.
So if I'm not mistaken, then I don't understand what the problem is here?


Correct me if this is wrong.

On Wed, Jul 1, 2015 at 11:46 AM, Newlin, Ben <Ben.Newlin at inin.com<mailto:Ben.Newlin at inin.com>> wrote:
I found similar behavior in my implementation, except that I use dr_routing() instead of route_to_gw(). When the AVP is already populated, these functions simply push on the end. This may be an implementation decision, but it is certainly not intuitive or what I expected.

I am currently using the same workaround of clearing out the AVPs prior to each DROUTING module call that populates them.

Ben Newlin

From: Patrick Wakano
Reply-To: OpenSIPS users mailling list
Date: Wednesday, July 1, 2015 at 11:41 AM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] Route_to_gw not pushing gw_id to the first index of avp

Hello Aron,
After calling is_from_gw("-1","i") I don't need to use the index, because it is the only value hold by the avp, but later in my script, if I call route_to_gw() and use $avp(dr_gw_id), it still has the value previously pushed by is_from_gw(). Then to get the gw id pushed by route_to_gw() I have either to use the avp index (e.g. $avp(dr_gw_id)[1]) or I set $avp(dr_gw_id) to null before calling route_to_gw() (which is what I am doing now).


On Wed, Jul 1, 2015 at 9:50 AM, Podrigal, Aron <aronp at guaranteedplus.com<mailto:aronp at guaranteedplus.com>> wrote:

I guess  pushing to the last index of the avp is what's expected.

But how did you retrieve the gw_id from is_from_gw, did you use an explicit index?

On Jul 1, 2015 8:16 AM, "Patrick Wakano" <pwakano at gmail.com<mailto:pwakano at gmail.com>> wrote:
Hello Opensips list,

When using the route_to_gw() function, I noticed that the gw_id that is pushed back to the avp wasn't matching the address actually selected by the drouting engine.
After some investigation I noticed that earlier in my script I was calling the is_from_gw() function with the 'i' flag which also pushes the gw_id to the avp and this was the value I was seeing in my avp after calling the route_to_gw().
By debuging with the avp_print() function I could see that the route_to_gw() does not pushes the gw_id to first index of the avp, but to the end of it. Any reason for that or is it a bug?

Regards,

Patrick

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--
Aron Podrigal
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//Be happy :-)
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