pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/41754?usp=email )

Change subject: library/NGAP_Functions: return NAS_PDU IE from InitialContextSetup if present ......................................................................

library/NGAP_Functions: return NAS_PDU IE from InitialContextSetup if present

This is required to obtain the NAS PDU transmitted by open5gs-smfd during Network Triggered Service Request. In that message, the NAS_PDU inside the PDUSessionResourceSetupListCxtReq item is empty, and instead the global NAS_PDU is filled with a Service Accept.

Change-Id: I7fced3f920c2514f58711a2ca1cc60c8dc79e395 --- M library/NGAP_Functions.ttcn 1 file changed, 8 insertions(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/54/41754/1

diff --git a/library/NGAP_Functions.ttcn b/library/NGAP_Functions.ttcn index c096214..e1fcf6d 100644 --- a/library/NGAP_Functions.ttcn +++ b/library/NGAP_Functions.ttcn @@ -153,10 +153,17 @@ case (id_InitialContextSetup) { var InitialContextSetupRequest msg := im.value_.initialContextSetupRequest; for (i := 0; i < lengthof(msg.protocolIEs); i := i+1) { + if (msg.protocolIEs[i].id == id_NAS_PDU) { + return msg.protocolIEs[i].value_.NAS_PDU; + } + } + for (i := 0; i < lengthof(msg.protocolIEs); i := i+1) { if (msg.protocolIEs[i].id == id_PDUSessionResourceSetupListCxtReq) { var PDUSessionResourceSetupListCxtReq req_li := msg.protocolIEs[i].value_.pDUSessionResourceSetupListCxtReq; for (j := 0; j < lengthof(req_li); j := j+1) { - return req_li[j].nAS_PDU; + if (ispresent(req_li[j].nAS_PDU)) { + return req_li[j].nAS_PDU; + } /* FIXME: we should be returning req_li[j].pDUSessionResourceSetupRequestTransfer too... */ } }