sccp: Add TC_callingparty_ssn_only()
This test verifies that libosmo-sccp will properly respond to SCCP
traffic that only has a SSN in the CallingPartyAddress. That situation
poses the unique challenge of how to route a response, as we lack
a GT and a PC to do the routing.
In order to support this, libosm-sccp now adds the PC into the
CallingPartyAddr when passing such messages from M3UA to SCCP. This
way the recipient can simply respond back to that address and it will
be routed on PC.
Change-Id: Ided599a922fb7f6dbbfe90f817c5419ab793f293
Related: OS#5146
diff --git a/sccp/SCCP_Tests_RAW.ttcn b/sccp/SCCP_Tests_RAW.ttcn
index 356fbb2..1ac82a2 100644
--- a/sccp/SCCP_Tests_RAW.ttcn
+++ b/sccp/SCCP_Tests_RAW.ttcn
@@ -312,7 +312,8 @@
function f_scmg_xceive(SCCP_PAR_Address calling, SCCP_PAR_Address called,
template (value) PDU_SCMG_message tx,
- template (omit) PDU_SCMG_message rx_exp) runs on SCCP_Test_RAW_CT
+ template (omit) PDU_SCMG_message rx_exp,
+ boolean accept_other_called_resp := false) runs on SCCP_Test_RAW_CT
{
var boolean exp_something := true;
timer T := 5.0;
@@ -328,6 +329,9 @@
[exp_something] MTP3.receive(tr_SCCP_MTP3_TRANSFERind(tr_SCCP_UDT(called, calling, decmatch rx_exp))) {
setverdict(pass);
}
+ [exp_something and accept_other_called_resp] MTP3.receive(tr_SCCP_MTP3_TRANSFERind(tr_SCCP_UDT(called, ?, decmatch rx_exp))) {
+ setverdict(pass);
+ }
[] MTP3.receive(tr_SCCP_MTP3_TRANSFERind(tr_SCCP_UDT(called, calling, ?))) {
setverdict(fail, "Received unexpected SCCP waiting for ", rx_exp);
}
@@ -402,6 +406,22 @@
f_scmg_xceive(calling, called, tx, rx_exp);
}
+/* Test CallingParty(only SSN) solicits response (OS#5146) */
+testcase TC_callingparty_ssn_only() runs on SCCP_Test_RAW_CT {
+ var SCCP_PAR_Address calling, called;
+ var template (value) PDU_SCMG_message tx;
+ var template (present) PDU_SCMG_message rx_exp;
+
+ f_init_raw(mp_sccp_cfg[0]);
+ f_sleep(1.0);
+
+ called := valueof(ts_SccpAddr_SSN(1));
+ calling := valueof(ts_SccpAddr_SSN(1));
+
+ tx := ts_SCMG_SST(1, mp_sccp_cfg[0].peer_pc);
+ rx_exp := ts_SCMG_SSA(1, mp_sccp_cfg[0].peer_pc);
+ f_scmg_xceive(calling, called, tx, rx_exp, accept_other_called_resp:=true);
+}
control {
@@ -413,6 +433,8 @@
execute( TC_scmg_sst_ssn1() );
execute( TC_scmg_sst_ssn_valid() );
execute( TC_scmg_sst_ssn_invalid() );
+
+ execute( TC_callingparty_ssn_only() );
}