in auth module readme, there is this kind of example code in
section 1.3.3. nonce_count:
# go stateful and catch retransmissions
if (!t_newtran())
drop; # retransmission
based on tm source comment, the #retransmission comment is not correct:
/** if no transaction already exists for the message, create a new one.
* atomic "new_tran" construct; it returns:
*
* @return <0 on error
* +1 if a request did not match a transaction
* 0 on retransmission
that is, if t_newtran() returns false, there has been an error. drop
happens automatically in case of retransmission.
-- juha