I am building a user agent client using nta in stateful mode. I have noticed
when I send a successful INVITE, after I generate the ACK for the 200 OK if the
remote side happens to retransmit the 200 OK (i.e., perhaps the ACK got lost)
that the sofia stack is not resending the ACK.
I am wondering my problem is that I am destroying the ACK transaction directly
after I send it.
nta_outgoing_t* ack_request =
nta_outgoing_tcreate(outgoing_leg, NULL, NULL, NULL,
SIP_METHOD_ACK,
(url_string_t*) sip->sip_contact->m_url ,
TAG_END());
nta_outgoing_destroy( ack_request ) ;
I do this to avoid a memory leak. However, I need the stack to handle
retransmissions of the ACK request for me. Is the solution for me to keep the
ACK transaction around for longer? If so, any suggestions as to when I can
safely destroy it?
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