lynxis lazus has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/38920?usp=email )

Change subject: SGSN_Tests: Context Req In: use correct TEID-C ......................................................................

SGSN_Tests: Context Req In: use correct TEID-C

For a MS/UE moving from 2G to 4G, the Ctx Acks need to transmit with the correct TEID-C which the SGSN chosen in the Context Response.

Change-Id: I84dc7dda8ee1227edd68d1482a4c5bf267c16418 --- M sgsn/SGSN_Tests.ttcn 1 file changed, 6 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/20/38920/1

diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn index 03a0ebb..2ddeaff 100644 --- a/sgsn/SGSN_Tests.ttcn +++ b/sgsn/SGSN_Tests.ttcn @@ -3082,12 +3082,16 @@ T.start(2.0); alt { [] GTP[GTP_GGSN_IDX].receive(tr_GTPC_SGSNContextResp(?, ?, ctx_rsp)) -> value gtpc_ud { + var OCT4 remote_teidc := gtpc_ud.gtpc.gtpc_pdu.sgsn_ContextResponse.teidControlPlane.teidControlPlane; + log("Rx SGSN Context Resp from SGSN, sending Ack"); - GTP[GTP_GGSN_IDX].send(ts_GTPC_SGSNContextAck(gtpc_ud.peer, '12345678'O, seq_nr)); + GTP[GTP_GGSN_IDX].send(ts_GTPC_SGSNContextAck(gtpc_ud.peer, remote_teidc, seq_nr)); setverdict(pass); } [] GTP[GTP_GGSN_IDX].receive(tr_GTPC_SGSNContextResp) -> value gtpc_ud { - GTP[GTP_GGSN_IDX].send(ts_GTPC_SGSNContextAck(gtpc_ud.peer, '12345678'O, seq_nr, + var OCT4 remote_teidc := gtpc_ud.gtpc.gtpc_pdu.sgsn_ContextResponse.teidControlPlane.teidControlPlane; + + GTP[GTP_GGSN_IDX].send(ts_GTPC_SGSNContextAck(gtpc_ud.peer, remote_teidc, seq_nr, ts_SGSNContextAckPDU(GTP_CAUSE_INVALID_MSG_FORMAT))); setverdict(fail, "Rx unexpected SGSN Context Resp"); }