epdg: Test UE-initiated Detach Procedure
Related: OS#6333
Change-Id: I19114c69119e42622f323378dd356217d107cb32
diff --git a/epdg/EPDG_Tests.ttcn b/epdg/EPDG_Tests.ttcn
index de5e7a8..82a2375 100644
--- a/epdg/EPDG_Tests.ttcn
+++ b/epdg/EPDG_Tests.ttcn
@@ -359,7 +359,7 @@
}
/* Diameter SWx SAR + SAA. */
-private altstep as_DIA_SWx_SA_success() runs on EPDG_ConnHdlr {
+private altstep as_DIA_SWx_SA_success(template (present) CxDx_3GPP_Server_Assignment_Type server_ass_type := ?) runs on EPDG_ConnHdlr {
var PDU_DIAMETER rx_dia;
var template (omit) AVP avp;
var octetstring sess_id;
@@ -404,7 +404,28 @@
}
}
-/* Diameter SWx SAR + SAA. */
+/* Send STR as PGW to AAA server, expect back STA */
+private function f_S6b_ST_success() runs on EPDG_ConnHdlr {
+ var PDU_DIAMETER rx_dia;
+ var UINT32 hbh_id := f_rnd_octstring(4);
+ var UINT32 ete_id := f_rnd_octstring(4);
+
+ /* Unlike STR, STA contains no IMSI. Register ete_id in DIAMETER_Emulation,
+ * so AIA is forwarded back to us in DIAMETER port instead of MTC_CT.DIAMETER_UNIT.
+ */
+ f_epdg_connhldr_S6b_expect_eteid(ete_id);
+
+ S6b.send(ts_DIA_S6b_STR(g_pars.imsi, DIAMETER_LOGOUT,
+ hbh_id := hbh_id, ete_id := ete_id));
+ alt {
+ [] S6b.receive(tr_DIA_S6b_STA(DIAMETER_SUCCESS)) -> value rx_dia {}
+ [] S6b.receive(PDU_DIAMETER:?) -> value rx_dia {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected Diameter S6b msg rx: ", rx_dia));
+ }
+ }
+}
+
+/* ePDG Creates session at the PGW. PGW sends Diameter s6b AAR + AAA. */
private altstep as_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
var PDU_GTPCv2 rx_msg;
var BearerContextIEs rx_bctx_ies;
@@ -444,8 +465,27 @@
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GTP2C msg rx: ", rx_msg));
}
}
-private function f_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
- as_GTP2C_CreateSession_success();
+
+/* ePDG Deletes session at the PGW. PGW sends Diameter s6b AAR + AAA. */
+private altstep as_GTP2C_DeleteSession_success() runs on EPDG_ConnHdlr {
+ var PDU_GTPCv2 rx_msg;
+ var BearerContextIEs rx_bctx_ies;
+ var template (value) FullyQualifiedTEID fteid_c_ie, fteid_u_ie;
+ var template (value) PDN_AddressAllocation paa;
+ var template (value) BearerContextIEs bctx_ies;
+
+ [] GTP2.receive(tr_GTP2C_DeleteSessionReq(g_pars.teic_local)) -> value rx_msg {
+ /* Upon rx of DeleteSession, emulate PGW requesting the AAA server for Sesssion Termination. */
+ f_S6b_ST_success();
+
+ GTP2.send(ts_GTP2C_DeleteSessionResp(g_pars.teic_remote,
+ rx_msg.sequenceNumber,
+ Request_accepted));
+ setverdict(pass);
+ }
+ [] GTP2.receive(PDU_GTPCv2:?) -> value rx_msg {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GTP2C msg rx: ", rx_msg));
+ }
}
/* Expect DeleteBearerResponse */
@@ -493,7 +533,7 @@
var GSUP_PDU rx_gsup;
var template octetstring destination_name := *;
GSUP.send(ts_GSUP_UL_REQ(g_pars.imsi));
- as_DIA_SWx_SA_success();
+ as_DIA_SWx_SA_success(REGISTRATION);
/* Expect a positive response back to the translator */
alt {
[] GSUP.receive(tr_GSUP_UL_RES(g_pars.imsi, destination_name));
@@ -508,7 +548,7 @@
private function f_GSUP_EPDGTunnel_success() runs on EPDG_ConnHdlr {
var GSUP_PDU rx_gsup;
GSUP.send(ts_GSUP_EPDGTunnel_REQ(g_pars.imsi));
- f_GTP2C_CreateSession_success();
+ as_GTP2C_CreateSession_success();
/* Expect a positive response back to the translator; */
var template (present) GSUP_IEs pdp_info := {
tr_GSUP_IE_PDP_CONTEXT_ID(?),
@@ -526,10 +566,30 @@
setverdict(pass);
}
+/* GSUP Purge MS Req + Resp, triggers S2b DeleteSession Req + Response. */
+private function f_GSUP_PurgeMS_success() runs on EPDG_ConnHdlr {
+ var GSUP_PDU rx_gsup;
+ GSUP.send(ts_GSUP_PURGE_MS_REQ(g_pars.imsi, OSMO_GSUP_CN_DOMAIN_PS));
+ as_GTP2C_DeleteSession_success();
+ /* ePDG internally sends STR to its AAA-Server. Since all sessions
+ become inactive, AAA-Server sends SAR(USER_DEREGISTRATION) to HSS: */
+
+ /* Expect a positive response back to the translator; */
+ as_DIA_SWx_SA_success(USER_DEREGISTRATION);
+ alt {
+ [] GSUP.receive(tr_GSUP_PURGE_MS_RES(g_pars.imsi));
+ [] GSUP.receive(GSUP_PDU:?) -> value rx_gsup {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GSUP msg rx: ", rx_gsup));
+ }
+ }
+ setverdict(pass);
+}
+
private function f_TC_authinfo_normal(charstring id) runs on EPDG_ConnHdlr {
f_GSUP_AI_success();
f_GSUP_LU_success();
f_GSUP_EPDGTunnel_success();
+ f_GSUP_PurgeMS_success();
}
testcase TC_authinfo_normal() runs on MTC_CT {