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msc/USSD: expect and reply SS/USSD messages over GSUP 

As we are about to finish the implementation of GSM TS 09.11,
OsmoMSC will forward all SS/USSD messages over GSUP to HLR,
and will expect responses back from HLR. The SS/USSD payload
processing will be out of scope for OsmoMSC itself.

Let's modify the existing test cases in order to expect and
reply SS/USSD messages over GSUP protocol.

Change-Id: I01de73aced6057328a121577a5a83bc2615fb2d4
This commit is contained in:
Vadim Yanitskiy 2018-06-19 00:14:28 +07:00
parent ce8cc37857
commit 747689e13d
1 changed files with 81 additions and 40 deletions
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121
msc/MSC_Tests.ttcn
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@ -2194,40 +2194,62 @@ runs on BSC_ConnHdlr {
/* Send CM Service Request for SS/USSD */
f_establish_fully(EST_TYPE_SS_ACT);
/* We need to inspect GSUP activity */
f_create_gsup_expect(hex2str(g_pars.imsi));
var template OCTN facility_req := f_USSD_FACILITY_IE_INVOKE(
invoke_id := 5, /* Phone may not start from 0 or 1 */
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "*#100#"
);
var template OCTN facility_rsp := f_USSD_FACILITY_IE_RETURN_RESULT(
invoke_id := 5, /* InvokeID shall be the same for both REQ and RSP */
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"
)
/* Compose a new SS/REGISTER message with request */
var template (value) PDU_ML3_MS_NW ussd_req := ts_ML3_MO_SS_REGISTER(
tid := 1, /* We just need a single transaction */
ti_flag := c_TIF_ORIG, /* Sent from the side that originates the TI */
facility := f_USSD_FACILITY_IE_INVOKE(
invoke_id := 5, /* Phone may not start from 0 or 1 */
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "*#100#"
)
facility := valueof(facility_req)
);
/* Compose SS/RELEASE_COMPLETE template with expected response */
var template PDU_ML3_NW_MS ussd_rsp := tr_ML3_MT_SS_RELEASE_COMPLETE(
tid := 1, /* Response should arrive within the same transaction */
ti_flag := c_TIF_REPL, /* Sent to the side that originates the TI */
facility := f_USSD_FACILITY_IE_RETURN_RESULT(
invoke_id := 5, /* InvokeID shall be the same for both REQ and RSP */
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"
)
facility := valueof(facility_rsp)
);
/* Request own number request */
/* Compose expected MSC -> HLR message */
var template GSUP_PDU gsup_req := tr_GSUP_PROC_SS_REQ(
imsi := g_pars.imsi,
state := OSMO_GSUP_SESSION_STATE_BEGIN,
ss := valueof(facility_req)
);
/* To be used for sending response with correct session ID */
var GSUP_PDU gsup_req_complete;
/* Request own number */
BSSAP.send(ts_PDU_DTAP_MO(ussd_req));
alt {
/* We expect RELEASE_COMPLETE message with the response */
[] BSSAP.receive(tr_PDU_DTAP_MT(ussd_rsp)) {
setverdict(pass);
}
[] BSSAP.receive {
setverdict(fail, "Unknown/unexpected BSSAP received");
mtc.stop;
}
}
/* Expect GSUP message containing the SS payload */
gsup_req_complete := f_expect_gsup_msg(gsup_req);
/* Compose the response from HLR using received session ID */
var template GSUP_PDU gsup_rsp := ts_GSUP_PROC_SS_REQ(
imsi := g_pars.imsi,
sid := gsup_req_complete.ies[1].val.session_id,
state := OSMO_GSUP_SESSION_STATE_END,
ss := valueof(facility_rsp)
);
/* Finally, HLR terminates the session */
GSUP.send(gsup_rsp);
/* Expect RELEASE_COMPLETE message with the response */
f_expect_mt_dtap_msg(ussd_rsp);
f_expect_clear();
}
@ -2259,38 +2281,57 @@ runs on BSC_ConnHdlr {
/* Hold the call for some time */
f_sleep(1.0);
var template OCTN facility_req := f_USSD_FACILITY_IE_INVOKE(
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "*#100#"
);
var template OCTN facility_rsp := f_USSD_FACILITY_IE_RETURN_RESULT(
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"
)
/* Compose a new SS/REGISTER message with request */
var template (value) PDU_ML3_MS_NW ussd_req := ts_ML3_MO_SS_REGISTER(
tid := 1, /* We just need a single transaction */
ti_flag := c_TIF_ORIG, /* Sent from the side that originates the TI */
facility := f_USSD_FACILITY_IE_INVOKE(
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "*#100#"
)
facility := valueof(facility_req)
);
/* Compose SS/RELEASE_COMPLETE template with expected response */
var template PDU_ML3_NW_MS ussd_rsp := tr_ML3_MT_SS_RELEASE_COMPLETE(
tid := 1, /* Response should arrive within the same transaction */
ti_flag := c_TIF_REPL, /* Sent to the side that originates the TI */
facility := f_USSD_FACILITY_IE_RETURN_RESULT(
op_code := SS_OP_CODE_PROCESS_USS_REQ,
ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"
)
facility := valueof(facility_rsp)
);
/* Request own number request */
/* Compose expected MSC -> HLR message */
var template GSUP_PDU gsup_req := tr_GSUP_PROC_SS_REQ(
imsi := g_pars.imsi,
state := OSMO_GSUP_SESSION_STATE_BEGIN,
ss := valueof(facility_req)
);
/* To be used for sending response with correct session ID */
var GSUP_PDU gsup_req_complete;
/* Request own number */
BSSAP.send(ts_PDU_DTAP_MO(ussd_req));
alt {
/* We expect RELEASE_COMPLETE message with the response */
[] BSSAP.receive(tr_PDU_DTAP_MT(ussd_rsp)) {
setverdict(pass);
}
[] BSSAP.receive {
setverdict(fail, "Unknown/unexpected BSSAP received");
mtc.stop;
}
}
/* Expect GSUP message containing the SS payload */
gsup_req_complete := f_expect_gsup_msg(gsup_req);
/* Compose the response from HLR using received session ID */
var template GSUP_PDU gsup_rsp := ts_GSUP_PROC_SS_REQ(
imsi := g_pars.imsi,
sid := gsup_req_complete.ies[1].val.session_id,
state := OSMO_GSUP_SESSION_STATE_END,
ss := valueof(facility_rsp)
);
/* Finally, HLR terminates the session */
GSUP.send(gsup_rsp);
/* Expect RELEASE_COMPLETE message with the response */
f_expect_mt_dtap_msg(ussd_rsp);
/* Hold the call for some time */
f_sleep(1.0);