[OpenSIPS-Users] OpensSIPS 2.2 - avps with an index of -1

[Pat Burke]

In OpenSIPS 1.11 you were able to use the index of -1 on AVP's to put items into an AVP as a FIFO instead of a LIFO.

Here is what I mean.


$(avp(list)[-1]) = 1;
$(avp(list)[-1]) = 2;

$(avp(list)[-1]) = 3;
$(avp(list)[-1]) = 4;
$(avp(list)[-1]) = 5;


this would result the values coming off as a FIFO
$avp(list) is 1
$avp(list) = NULL;
$avp(list) is 2
$avp(list) = NULL;
$avp(list) is 3
$avp(list) = NULL;
$avp(list) is 4
$avp(list) = NULL;
$avp(list) is 5






Just pushing the items onto the AVP creates a LIFO
$avp(list) = 1;
$avp(list) = 2;
$avp(list) = 3;
$avp(list) = 4;
$avp(list) = 5;


this would result the values coming off as
$avp(list) is 5
$avp(list) = NULL;
$avp(list) is 4
$avp(list) = NULL;
$avp(list) is 3
$avp(list) = NULL;
$avp(list) is 2
$avp(list) = NULL;
$avp(list) is 1




So my question is how do I create a FIFO without having to keep an index to ensure that I am adding the item to the end.  When porting the code from 1.11 to 2.2 I get an error "ERROR:core:replace_avp: Index with negative value" when I use the -1.




Regards,
Pat Burke




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