Ok I worked it out. In the async callback before I call tmb.t_continue you need to restore the transaction avp lists before trying to add an AVP to be used in the "continue route" of the cfg file. do for example:
set_avp_list(AVP_TRACK_FROM | AVP_CLASS_URI, &t->uri_avps_from ); set_avp_list(AVP_TRACK_TO | AVP_CLASS_URI, &t->uri_avps_to ); set_avp_list(AVP_TRACK_FROM | AVP_CLASS_USER, &t->user_avps_from ); set_avp_list(AVP_TRACK_TO | AVP_CLASS_USER, &t->user_avps_to ); set_avp_list(AVP_TRACK_FROM | AVP_CLASS_DOMAIN, &t->domain_avps_from ); set_avp_list(AVP_TRACK_TO | AVP_CLASS_DOMAIN, &t->domain_avps_to ); ... code to add my AVP to be made available to cfg file ...
Cheers Jason On Tue, Oct 2, 2012 at 2:45 PM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,
not clear now what you try to do, but have in mind that avps are
attached to a sip message or transaction. You cannot access it if it
is set in other process for a transaction you don't have access to
it anymore. Use some other sort of shared memory structure.
Cheers,
Daniel
On 10/2/12 2:12 PM, Jason Penton wrote:
Hey Daniel,
plse see inline:
On Tue, Oct 2, 2012 at 2:02 PM,
Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,
On 10/2/12 1:58 PM, Jason Penton wrote:
Okay I solved this by using the
uas->request structure ;)
indeed, this is the right way -- forgot to answer this
email...
np, thanks!
One more question re. async "pattern" Daniel:
In the "continued" code, prior to executing the config
file actions, can you add an avp (ie from within the
code prior to calling t_continue, can we add an avp and
have it available to the config file in the "continued"
route block)?
IIRC, at that moment you have to add it to the list that is
stored in transaction. Maybe you can use a $var() and then
move it in avp list inside the continued route block.
Im not sure I understand you here? Just to make sure I am
clear. I am effectively trying to do this:
longrunningfunction(); #this is where the async will happen,
so the next line will be run by another process
if ($avp(s:return_val_from_longrunningfunction) > 0) {
blah;
}
So, I am asking how I can set the
$avp(s:return_val_from_longrunningfunction). I can tell you
from practice that it doesnt work using the default add_avp
from within my async callback process. I have not researched
yet how the avps are stored, architected, etc. But I am
imagineing that right now the process I am in has no "access"
to avp "storage". Either that or the avp "storage" is
overwritten with the t_continue code? Would be great if you
could shed some light?
Is it possible to get the sip message from a
transaction after using t_continue. The reason I ask
is that using the async "pattern", how would one be
able to use transactional replies in code using
t_reply(code, message). Is the only way to store the
sip_msg in shm for later use, because if I look at
TM I see there is no storage for the original SIP
request?