This introduces a new 'call' from the TC-User to TCO, which creates
the equired transaction_sup, dialogues_sup, dha_fsm and tsm_fsm _before_
the TC-INVOKE component will be passed into the new DHA fsm.
Once the TCO actually receives the TR-BEGIN, it will not start the
transaction supervisor, but merely look it up based on the TR-user
provided transaction ID.
Prior to this patch, DHA needs to know the CCO pid, and CCO needed to
know the DHA pid at startup. The idea was to start CCO from within the
init() callback in DHA. However, this caused a deadlock in the
supervisor.
We now use the locally registred process names (tcap_cco_DLGID) to
resolve the process. However, it might be cleaner to use an ets table
at some later point. For now it is nice to see the name of each process
in pman for debugging...
This can be used to instantiate the per-SAP tcap_sap_sup and
tcap_tco_server callback module in a simple call like this:
{ok, TcoPid} = tcap_user:start_sap(osmo_sccp_tcap, [7], []).
Harald Welte