osmith has uploaded this change for review. ( 
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/33664 )


Change subject: msc: f_call_hangup: add missing rx MNCC_REL_cnf
......................................................................

msc: f_call_hangup: add missing rx MNCC_REL_cnf

Add the missing rx of MNCC_REL_cnf to f_call_hangup for the MO case
(called with release_by_ms = false, see f_mo_call()).

This is in preparation for running f_mo_call several times in a row to
test multiple bearer services in a CSD test (follow up patch). Without
this patch, calling f_mo_call_establish() for the second time fails to
rx the MNCC_RTP_CREATE because the REL cnf is still in the port. This
leads to a timeout of X2 and OsmoMSC sending a CC RELEASE.

Adjust the log numbers next to f_call_hangup to re-use numbers 2 and 3
from above, as only one of the two code paths gets executed (similar to
numbers 5 and 6 below).

Related: OS#4394
Change-Id: Ia2ed7ce092e73e17c4243e83bfd239ead8266b49
---
M msc/BSC_ConnectionHandler.ttcn
1 file changed, 26 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks 
refs/changes/64/33664/1

diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 1359dc7..996f54a 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -1801,8 +1801,10 @@
                /* A-side (PLMN) Release of call */
                MNCC.send(ts_MNCC_REL_req(cpars.mncc_callref, 
valueof(ts_MNCC_cause(42))));
                
BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_RELEASE(cpars.transaction_id)));
-               log("f_call_hangup 4: rx DTAP CC RELEASE");
+               log("f_call_hangup 2.a: rx DTAP CC RELEASE");
                
BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_REL_COMPL(cpars.transaction_id)));
+               log("f_call_hangup 3.a: rx MNCC REL cnf");
+               MNCC.receive(tr_MNCC_REL_cnf(cpars.mncc_callref, cause := *));
        }

        respond_to_dlcx := not (isbound(cpars.mgw_drop_dlcx) and 
valueof(cpars.mgw_drop_dlcx));

--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: Ia2ed7ce092e73e17c4243e83bfd239ead8266b49
Gerrit-Change-Number: 33664
Gerrit-PatchSet: 1
Gerrit-Owner: osmith <[email protected]>
Gerrit-MessageType: newchange

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