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stp: Test that UDTS containing tcap is routed correctly

Related: SYS#8090
Depends: libosmo-sigtran.git I2051aa9e84e553feb17daabb93ba3ce82358e0e4
Change-Id: I264ab424fbc3652249535bbe4f30029defa64c09
---
M stp/STP_Tests_TCAP.ttcn
1 file changed, 54 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/37/42937/1

diff --git a/stp/STP_Tests_TCAP.ttcn b/stp/STP_Tests_TCAP.ttcn
index 00c08a5..bede97d 100644
--- a/stp/STP_Tests_TCAP.ttcn
+++ b/stp/STP_Tests_TCAP.ttcn
@@ -918,7 +918,60 @@
 	setverdict(pass);
 }
 
+/* Test UDTS routing with TCAP load-sharing
+ * If a TCAP message is returned in a UDTS and
+ * * it is in the TCAP session cache/tracking
+ * * then route it back to the correct IPA ASP.
+ */
+testcase TC_tcap_loadshare_m3ua_to_ipa_udts_routing() runs on TCAP_CT {
+	var template (value) IPA_EXT_TCAP_ROUTING_Message tcap_rt_msg;
+	var template (value) TCMessage tcap_msg;
+	var Misc_Helpers.ro_charstring tcap_asps := { "asp-m3ua-loadshare-0-0",
+						      "asp-m3ua-loadshare-0-1",
+						      "asp-ipa-loadshare-0-0",
+						      "asp-ipa-loadshare-0-1" };
+	var TCAP_CT_Configurations tcap_configs := tcap_build_configs(tcap_asps);
 
+	var OCT4 dtid := int2oct(198, 4);
+	var OCT4 otid := int2oct(202, 4);
+	var integer ipa_idx;
+	var integer m3ua_idx;
+
+	f_init_tcap(tcap_configs);
+	f_tcap_loadshare_register(2, 0, 99, 3, 100, 199);
+
+	tcap_msg := ts_TCAP_Begin(int2oct(202, 4));
+	ipa_idx := f_asp_tx_tcap_exp_alt(tcap_msg, 0, 2, 3);
+	tcap_msg := ts_TCAP_Continue(int2oct(98 + (ipa_idx-2)*100, 4), int2oct(202, 4));
+	m3ua_idx := f_asp_tx_tcap_exp_alt(tcap_msg, ipa_idx, 0, 1);
+
+	/* reply with a UDTS */
+	var template (value) TCAP_N_NOTICE_req sccp_udts :=
+		ts_TCAP_N_NOTICE_req(g_tcap[m3ua_idx].sccp_addr_own,
+				     g_tcap[m3ua_idx].sccp_addr_peer,
+				     3, /* Subsystem failure */
+				     tcap_msg);
+	timer T := 5.0;
+	T.start;
+	SCCP_TCAP[m3ua_idx].send(sccp_udts);
+
+	var template (present) TCAP_N_NOTICE_ind exp_sccp_udts :=
+		tr_TCAP_N_NOTICE_ind(g_tcap[m3ua_idx].sccp_addr_own,
+				     g_tcap[m3ua_idx].sccp_addr_peer,
+				     3,
+				     tcap_msg);
+
+	alt {
+	[] SCCP_TCAP[ipa_idx].receive(exp_sccp_udts) {
+		log("Received UTDS via TCAP[3] ASP");
+		}
+	[] T.timeout {
+		setverdict(fail, __SCOPE__, "(): Timeout waiting for SCCP UTDS / TCAP message");
+		Misc_Helpers.f_shutdown(__BFILE__, __LINE__);
+		}
+	}
+	setverdict(pass);
+}
 
 /* TODO: test TCAP Abort message is used.
  * TODO: test TCAP Begin+End message is used.
@@ -943,6 +996,7 @@
 	execute( TC_tcap_loadshare_ipa_tcap_range_fail_pc_ssn_overlap() );
 	execute( TC_tcap_loadshare_ipa_tcap_norange() );
 	execute( TC_tcap_loadshare_m3ua_to_ipa_udts() );
+	execute( TC_tcap_loadshare_m3ua_to_ipa_udts_routing() );
 }
 
 

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