<p>Vadim Yanitskiy has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/9685">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">msc/USSD: expect and reply SS/USSD messages over GSUP<br><br>As we are about to finish the implementation of GSM TS 09.11,<br>OsmoMSC will forward all SS/USSD messages over GSUP to HLR,<br>and will expect responses back from HLR. The SS/USSD payload<br>processing will be out of scope for OsmoMSC itself.<br><br>Let's modify the existing test cases in order to expect and<br>reply SS/USSD messages over GSUP protocol.<br><br>Change-Id: I01de73aced6057328a121577a5a83bc2615fb2d4<br>---<br>M msc/MSC_Tests.ttcn<br>1 file changed, 105 insertions(+), 20 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/85/9685/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn</span><br><span>index dc5303e..1af77cd 100644</span><br><span>--- a/msc/MSC_Tests.ttcn</span><br><span>+++ b/msc/MSC_Tests.ttcn</span><br><span>@@ -2120,31 +2120,71 @@</span><br><span> /* Send CM Service Request for SS/USSD */</span><br><span> f_establish_fully(EST_TYPE_SS_ACT);</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+ /* We need to inspect GSUP activity */</span><br><span style="color: hsl(120, 100%, 40%);">+ f_create_gsup_expect(hex2str(g_pars.imsi));</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ var template OCTN facility_req := f_USSD_FACILITY_IE_INVOKE(</span><br><span style="color: hsl(120, 100%, 40%);">+ invoke_id := 5, /* Phone may not start from 0 or 1 */</span><br><span style="color: hsl(120, 100%, 40%);">+ op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(120, 100%, 40%);">+ ussd_string := "*#100#"</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ var template OCTN facility_rsp := f_USSD_FACILITY_IE_RETURN_RESULT(</span><br><span style="color: hsl(120, 100%, 40%);">+ invoke_id := 5, /* InvokeID shall be the same for both REQ and RSP */</span><br><span style="color: hsl(120, 100%, 40%);">+ op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(120, 100%, 40%);">+ ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"</span><br><span style="color: hsl(120, 100%, 40%);">+ )</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* Compose a new SS/REGISTER message with request */</span><br><span> var template (value) PDU_ML3_MS_NW ussd_req := ts_ML3_MO_SS_REGISTER(</span><br><span> tid := 1, /* We just need a single transaction */</span><br><span> ti_flag := c_TIF_ORIG, /* Sent from the side that originates the TI */</span><br><span style="color: hsl(0, 100%, 40%);">- facility := f_USSD_FACILITY_IE_INVOKE(</span><br><span style="color: hsl(0, 100%, 40%);">- invoke_id := 5, /* Phone may not start from 0 or 1 */</span><br><span style="color: hsl(0, 100%, 40%);">- op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(0, 100%, 40%);">- ussd_string := "*#100#"</span><br><span style="color: hsl(0, 100%, 40%);">- )</span><br><span style="color: hsl(120, 100%, 40%);">+ facility := valueof(facility_req)</span><br><span> );</span><br><span> </span><br><span> /* Compose SS/RELEASE_COMPLETE template with expected response */</span><br><span> var template PDU_ML3_NW_MS ussd_rsp := tr_ML3_MT_SS_RELEASE_COMPLETE(</span><br><span> tid := 1, /* Response should arrive within the same transaction */</span><br><span> ti_flag := c_TIF_REPL, /* Sent to the side that originates the TI */</span><br><span style="color: hsl(0, 100%, 40%);">- facility := f_USSD_FACILITY_IE_RETURN_RESULT(</span><br><span style="color: hsl(0, 100%, 40%);">- invoke_id := 5, /* InvokeID shall be the same for both REQ and RSP */</span><br><span style="color: hsl(0, 100%, 40%);">- op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(0, 100%, 40%);">- ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"</span><br><span style="color: hsl(0, 100%, 40%);">- )</span><br><span style="color: hsl(120, 100%, 40%);">+ facility := valueof(facility_rsp)</span><br><span> );</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* Request own number request */</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Compose expected MSC -> HLR message */</span><br><span style="color: hsl(120, 100%, 40%);">+ var template GSUP_PDU gsup_req := tr_GSUP_PROC_SS_REQ(</span><br><span style="color: hsl(120, 100%, 40%);">+ imsi := g_pars.imsi,</span><br><span style="color: hsl(120, 100%, 40%);">+ state := OSMO_GSUP_SESSION_STATE_BEGIN,</span><br><span style="color: hsl(120, 100%, 40%);">+ ss := valueof(facility_req)</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* To be used for sending response with correct session ID */</span><br><span style="color: hsl(120, 100%, 40%);">+ var GSUP_PDU gsup_req_complete;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Request own number request, wait for GSUP-request */</span><br><span> BSSAP.send(ts_PDU_DTAP_MO(ussd_req));</span><br><span> alt {</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive(gsup_req) -> value gsup_req_complete {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(pass);</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unknown/unexpected GSUP received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] BSSAP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unexpected BSSAP message received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Compose the response from HLR using received session ID */</span><br><span style="color: hsl(120, 100%, 40%);">+ var template GSUP_PDU gsup_rsp := ts_GSUP_PROC_SS_REQ(</span><br><span style="color: hsl(120, 100%, 40%);">+ imsi := g_pars.imsi,</span><br><span style="color: hsl(120, 100%, 40%);">+ sid := gsup_req_complete.ies[1].val.session_id,</span><br><span style="color: hsl(120, 100%, 40%);">+ state := OSMO_GSUP_SESSION_STATE_END,</span><br><span style="color: hsl(120, 100%, 40%);">+ ss := valueof(facility_rsp)</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ GSUP.send(gsup_rsp);</span><br><span style="color: hsl(120, 100%, 40%);">+ alt {</span><br><span> /* We expect RELEASE_COMPLETE message with the response */</span><br><span> [] BSSAP.receive(tr_PDU_DTAP_MT(ussd_rsp)) {</span><br><span> setverdict(pass);</span><br><span>@@ -2153,6 +2193,10 @@</span><br><span> setverdict(fail, "Unknown/unexpected BSSAP received");</span><br><span> self.stop;</span><br><span> }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unexpected GSUP message received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span> }</span><br><span> </span><br><span> f_expect_clear();</span><br><span>@@ -2185,29 +2229,66 @@</span><br><span> /* Hold the call for some time */</span><br><span> f_sleep(1.0);</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+ var template OCTN facility_req := f_USSD_FACILITY_IE_INVOKE(</span><br><span style="color: hsl(120, 100%, 40%);">+ op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(120, 100%, 40%);">+ ussd_string := "*#100#"</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ var template OCTN facility_rsp := f_USSD_FACILITY_IE_RETURN_RESULT(</span><br><span style="color: hsl(120, 100%, 40%);">+ op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(120, 100%, 40%);">+ ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"</span><br><span style="color: hsl(120, 100%, 40%);">+ )</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* Compose a new SS/REGISTER message with request */</span><br><span> var template (value) PDU_ML3_MS_NW ussd_req := ts_ML3_MO_SS_REGISTER(</span><br><span> tid := 1, /* We just need a single transaction */</span><br><span> ti_flag := c_TIF_ORIG, /* Sent from the side that originates the TI */</span><br><span style="color: hsl(0, 100%, 40%);">- facility := f_USSD_FACILITY_IE_INVOKE(</span><br><span style="color: hsl(0, 100%, 40%);">- op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(0, 100%, 40%);">- ussd_string := "*#100#"</span><br><span style="color: hsl(0, 100%, 40%);">- )</span><br><span style="color: hsl(120, 100%, 40%);">+ facility := valueof(facility_req)</span><br><span> );</span><br><span> </span><br><span> /* Compose SS/RELEASE_COMPLETE template with expected response */</span><br><span> var template PDU_ML3_NW_MS ussd_rsp := tr_ML3_MT_SS_RELEASE_COMPLETE(</span><br><span> tid := 1, /* Response should arrive within the same transaction */</span><br><span> ti_flag := c_TIF_REPL, /* Sent to the side that originates the TI */</span><br><span style="color: hsl(0, 100%, 40%);">- facility := f_USSD_FACILITY_IE_RETURN_RESULT(</span><br><span style="color: hsl(0, 100%, 40%);">- op_code := SS_OP_CODE_PROCESS_USS_REQ,</span><br><span style="color: hsl(0, 100%, 40%);">- ussd_string := "Your extension is " & hex2str(g_pars.msisdn) & "\r"</span><br><span style="color: hsl(0, 100%, 40%);">- )</span><br><span style="color: hsl(120, 100%, 40%);">+ facility := valueof(facility_rsp)</span><br><span> );</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* Request own number request */</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Compose expected MSC -> HLR message */</span><br><span style="color: hsl(120, 100%, 40%);">+ var template GSUP_PDU gsup_req := tr_GSUP_PROC_SS_REQ(</span><br><span style="color: hsl(120, 100%, 40%);">+ imsi := g_pars.imsi,</span><br><span style="color: hsl(120, 100%, 40%);">+ state := OSMO_GSUP_SESSION_STATE_BEGIN,</span><br><span style="color: hsl(120, 100%, 40%);">+ ss := valueof(facility_req)</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* To be used for sending response with correct session ID */</span><br><span style="color: hsl(120, 100%, 40%);">+ var GSUP_PDU gsup_req_complete;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Request own number request, wait for GSUP-request */</span><br><span> BSSAP.send(ts_PDU_DTAP_MO(ussd_req));</span><br><span> alt {</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive(gsup_req) -> value gsup_req_complete {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(pass);</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unknown/unexpected GSUP received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] BSSAP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unexpected BSSAP message received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Compose the response from HLR using received session ID */</span><br><span style="color: hsl(120, 100%, 40%);">+ var template GSUP_PDU gsup_rsp := ts_GSUP_PROC_SS_REQ(</span><br><span style="color: hsl(120, 100%, 40%);">+ imsi := g_pars.imsi,</span><br><span style="color: hsl(120, 100%, 40%);">+ sid := gsup_req_complete.ies[1].val.session_id,</span><br><span style="color: hsl(120, 100%, 40%);">+ state := OSMO_GSUP_SESSION_STATE_END,</span><br><span style="color: hsl(120, 100%, 40%);">+ ss := valueof(facility_rsp)</span><br><span style="color: hsl(120, 100%, 40%);">+ );</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ GSUP.send(gsup_rsp);</span><br><span style="color: hsl(120, 100%, 40%);">+ alt {</span><br><span> /* We expect RELEASE_COMPLETE message with the response */</span><br><span> [] BSSAP.receive(tr_PDU_DTAP_MT(ussd_rsp)) {</span><br><span> setverdict(pass);</span><br><span>@@ -2216,6 +2297,10 @@</span><br><span> setverdict(fail, "Unknown/unexpected BSSAP received");</span><br><span> self.stop;</span><br><span> }</span><br><span style="color: hsl(120, 100%, 40%);">+ [] GSUP.receive {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Unexpected GSUP message received");</span><br><span style="color: hsl(120, 100%, 40%);">+ self.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span> }</span><br><span> </span><br><span> /* Hold the call for some time */</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/9685">change 9685</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/9685"/><meta itemprop="name" content="View Change"/></div></div>
<div style="display:none"> Gerrit-Project: osmo-ttcn3-hacks </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: I01de73aced6057328a121577a5a83bc2615fb2d4 </div>
<div style="display:none"> Gerrit-Change-Number: 9685 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Vadim Yanitskiy <axilirator@gmail.com> </div>