osmo-ttcn3-hacks/hnbgw/HNBGW_Tests.ttcn

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module HNBGW_Tests {
/* Integration Tests for OsmoHNBGW
* (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* All rights reserved.
*
* Released under the terms of GNU General Public License, Version 2 or
* (at your option) any later version.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This test suite tests OsmoHNBGW while emulating the hNodeB as well as MSC, SGSN, MGW
* See README for more details.
*/
import from Misc_Helpers all;
import from General_Types all;
import from GSM_Types all;
import from Osmocom_Types all;
import from IPL4asp_Types all;
import from Osmocom_CTRL_Functions all;
import from Osmocom_CTRL_Types all;
import from Osmocom_CTRL_Adapter all;
import from StatsD_Types all;
import from StatsD_CodecPort all;
import from StatsD_CodecPort_CtrlFunct all;
import from StatsD_Checker all;
import from Osmocom_VTY_Functions all;
import from TELNETasp_PortType all;
import from HNBAP_Templates all;
import from HNBAP_PDU_Descriptions all;
import from RUA_IEs all;
import from RUA_Templates all;
import from RUA_Emulation all;
import from Iuh_Emulation all;
import from RANAP_Types all;
import from RANAP_PDU_Descriptions all;
import from RANAP_PDU_Contents all;
import from RANAP_IEs all;
import from RANAP_Templates all;
import from RAN_Adapter all;
import from RAN_Adapter all;
import from RAN_Emulation all;
import from MGCP_Emulation all;
import from MGCP_Types all;
import from MGCP_Templates all;
import from MGCP_CodecPort all;
import from SDP_Types all;
modulepar {
/* IP address at which the HNodeB can be reached */
charstring mp_hnodeb_ip := "127.0.0.1";
integer mp_hnodeb_port := -1;
/* IP address at which the test binds */
charstring mp_hnbgw_ip := "127.0.0.1";
integer mp_hnbgw_iuh_port := 29169;
charstring mp_mgw_ip := "127.0.0.1";
integer mp_mgw_port := 2427;
RAN_Configuration mp_msc_cfg := {
transport := RANAP_TRANSPORT_IuCS,
sccp_service_type := "mtp3_itu",
sctp_addr := { 23905, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 188, /* 0.23.4 first MSC emulation */
own_ssn := 142,
peer_pc := 189, /* 0.23.5 osmo-hnbgw */
peer_ssn := 142,
sio := '83'O,
rctx := 1
};
RAN_Configuration mp_sgsn_cfg := {
transport := RANAP_TRANSPORT_IuCS,
sccp_service_type := "mtp3_itu",
sctp_addr := { 23906, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 185, /* 0.23.1 first SGSN emulation */
own_ssn := 142,
peer_pc := 189, /* 0.23.5 osmo-hnbgw */
peer_ssn := 142,
sio := '83'O,
rctx := 2
};
}
function MSC_UnitdataCallback(RANAP_PDU ranap) runs on RAN_Emulation_CT return template RANAP_PDU {
// TODO: Actually implement unitdata handling
return ts_RANAP_Reset(ts_RanapCause_om_intervention, cs_domain);
}
const RanOps MSC_RanOps := {
ranap_create_cb := refers(RAN_Emulation.RanapExpectedCreateCallback),
ranap_unitdata_cb := refers(MSC_UnitdataCallback),
ps_domain := false,
decode_dtap := false,
role_ms := false,
protocol := RAN_PROTOCOL_RANAP,
transport := RANAP_TRANSPORT_IuCS,
use_osmux := false,
sccp_addr_local := omit,
sccp_addr_peer := omit
}
type record CrcxResponse {
integer resp,
HostName mgw_rtp_ip,
PortNumber mgw_rtp_port,
MgcpConnectionId mgcp_connection_id
}
type record MgcpParameters {
integer got_crcx_count,
integer got_dlcx_count,
MgcpCallId mgcp_call_id optional,
MgcpEndpoint mgcp_ep,
CrcxResponse mgw_conn_1,
CrcxResponse mgw_conn_2,
uint7_t rtp_payload_type,
charstring rtp_sdp_format,
HostName hnb_rtp_ip,
PortNumber hnb_rtp_port,
HostName cn_rtp_ip,
PortNumber cn_rtp_port,
boolean use_osmux,
integer got_osmux_count
}
template (value) MgcpParameters t_MgcpParams := {
got_crcx_count := 0,
got_dlcx_count := 0,
mgcp_call_id := omit,
mgcp_ep := "rtpbridge/1@mgw",
mgw_conn_1 := {
resp := 1,
mgw_rtp_ip := "127.1.2.1",
mgw_rtp_port := 10000,
mgcp_connection_id := '11111'H
},
mgw_conn_2 := {
resp := 1,
mgw_rtp_ip := "127.1.2.2",
mgw_rtp_port := 20000,
mgcp_connection_id := '22222'H
},
rtp_payload_type := 23,
rtp_sdp_format := "FOO",
hnb_rtp_ip := "127.1.1.1",
hnb_rtp_port := 10001,
cn_rtp_ip := "127.1.3.1",
cn_rtp_port := 20001,
use_osmux := false,
got_osmux_count := 0
}
type record TestHdlrParams {
integer hnb_idx,
hexstring imsi,
boolean ps_domain,
MgcpParameters mgcp_pars optional,
HnbConfig hnb optional
}
/* We extend:
* RUA_ConnHdlr (for the Iuh side, emulating the HNB)
* RAN_ConnHdlr (for the Iu side, emulating the MSC)
* MGCP_ConnHdlr (for the MGCP side, emulating the MGW)
*/
type component ConnHdlr extends RAN_ConnHdlr, MGCP_ConnHdlr, RUA_ConnHdlr {
var integer g_sccp_conn_id;
var TestHdlrParams g_pars;
timer g_Tguard;
}
const MGCPOps MSC_MGCPOps := {
create_cb := refers(MGCP_Emulation.ExpectedCreateCallback),
unitdata_cb := refers(MGCP_Emulation.DummyUnitdataCallback)
}
function f_create_ranap_exp(octetstring l3_enc) runs on ConnHdlr {
BSSAP_PROC.call(RAN_register:{l3_enc, self}) {
[] BSSAP_PROC.getreply(RAN_register:{?, ?}) {};
}
}
const integer NUM_HNB := 1;
const hexstring ranap_cm_service_req := '001340400000060003400100000f40060000f11028b6003a40080000f110ffffffff0010400e0d052411035758a605f44e9d4aef004f400300001c0056400500f1100017'H;
const hexstring ranap_auth_req := '00144032000002001040262505120217dc146aeac56cb5ff6d5fb51f47f19220108ca5a6d0c8110000b9e9272498872764003b400100'H;
const hexstring ranap_auth_resp := '001440140000010010400d0c0554ccbdd0302104002f3ae4'H;
const hexstring ranap_paging := '000e401e0000030003400100001740095000010100000000f10040400500b6cf4773'H;
const hexstring ranap_rab_ass_req := '0000005900000100364052000001003500487824cd80102fa7201a2c0000f44c080a028000514000272028140067400000222814003c40000000503d02000227c03500010a0901a200000000000000000000000000401f4a0000400100'H;
const hexstring iu_release_compl := '20010003000000'H;
type record HnbConfig {
LocationAreaIdentification lai,
integer sac
}
type component test_CT extends CTRL_Adapter_CT {
var boolean g_initialized := false;
/********************* Iu side */
var RAN_Adapter g_msc;
var RAN_Adapter g_sgsn;
/* SGSN IuPS missing */
/********************* Iuh side */
var HnbConfig g_hnb_cfg[NUM_HNB];
var Iuh_Emulation_CT vc_Iuh[NUM_HNB];
var RUA_Emulation_CT vc_RUA[NUM_HNB];
port HNBAP_PT HNBAP[NUM_HNB];
var MGCP_Emulation_CT vc_MGCP;
port TELNETasp_PT HNBGWVTY;
/* global test case guard timer (actual timeout value is set in f_init()) */
timer T_guard := 30.0;
}
/* global altstep for global guard timer; */
altstep as_Tguard() runs on test_CT {
[] T_guard.timeout {
setverdict(fail, "Timeout of T_guard");
mtc.stop;
}
}
friend function f_logp(TELNETasp_PT pt, charstring log_msg)
{
// log on TTCN3 log output
log(log_msg);
// log in stderr log
f_vty_transceive(pt, "logp lglobal notice TTCN3 f_logp(): " & log_msg);
}
function f_init_vty(charstring id := "foo") runs on test_CT {
if (HNBGWVTY.checkstate("Mapped")) {
/* skip initialization if already executed once */
return;
}
map(self:HNBGWVTY, system:HNBGWVTY);
f_vty_set_prompts(HNBGWVTY);
f_vty_transceive(HNBGWVTY, "enable");
}
function f_init_mgcp(charstring id) runs on test_CT {
id := id & "-MGCP";
var MGCPOps ops := {
create_cb := refers(MGCP_Emulation.ExpectedCreateCallback),
unitdata_cb := refers(MGCP_Emulation.DummyUnitdataCallback)
}
var MGCP_conn_parameters pars := {
callagent_ip := mp_hnbgw_ip,
callagent_udp_port := -1,
mgw_ip := mp_mgw_ip,
mgw_udp_port := mp_mgw_port,
multi_conn_mode := false
}
vc_MGCP := MGCP_Emulation_CT.create(id);
map(vc_MGCP:MGCP, system:MGCP_CODEC_PT);
vc_MGCP.start(MGCP_Emulation.main(ops, pars, id));
}
function f_init_hnodeb(charstring id, integer hnb_idx, RuaOps rua_ops) runs on test_CT {
id := id & "-Iuh" & int2str(hnb_idx);
/* Iuh lower layer (RUA/HNBAP demux) */
var Iuh_conn_parameters iuh_pars;
iuh_pars.remote_ip := mp_hnbgw_ip;
iuh_pars.remote_sctp_port := mp_hnbgw_iuh_port;
iuh_pars.local_ip := mp_hnodeb_ip;
iuh_pars.local_sctp_port := mp_hnodeb_port + hnb_idx;
vc_Iuh[hnb_idx] := Iuh_Emulation_CT.create(id);
connect(self:HNBAP[hnb_idx], vc_Iuh[hnb_idx]:HNBAP);
vc_RUA[hnb_idx] := RUA_Emulation_CT.create(id & "-RUA");
connect(vc_RUA[hnb_idx]:RUA, vc_Iuh[hnb_idx]:RUA);
/* Start Iuh side components */
vc_Iuh[hnb_idx].start(Iuh_Emulation.main(iuh_pars, id));
vc_RUA[hnb_idx].start(RUA_Emulation.main(rua_ops, id & "-RUA"));
}
/* global initialization function */
function f_init(charstring id := "HBGW", float guard_timeout := 30.0) runs on test_CT {
g_hnb_cfg[0] := {
lai := {
mcc_mnc := '00101'H,
lac := 2342
},
sac := 55
}
T_guard.start(guard_timeout);
activate(as_Tguard());
/* RUA/RANAP emulation on top of lower-layer Iuh */
var RuaOps rua_ops := {
create_cb := refers(IuhRanapCreateCallback),
unitdata_cb := refers(IuhRanapUnitdataCallback)
};
for (var integer i := 0; i < NUM_HNB; i := i+1) {
f_init_hnodeb(testcasename(), i, rua_ops);
}
/* MSC emulation */
var RanOps ranops := {
ranap_create_cb := refers(RAN_Emulation.RanapExpectedCreateCallback),
ranap_unitdata_cb := omit,
ps_domain := false,
decode_dtap := false,
role_ms := false,
protocol := RAN_PROTOCOL_RANAP,
transport := RANAP_TRANSPORT_IuCS,
use_osmux := false,
sccp_addr_local := omit,
sccp_addr_peer := omit
};
f_ran_adapter_init(g_msc, mp_msc_cfg, "HNBGW_Test", ranops);
f_ran_adapter_start(g_msc);
/* SGSN emulation */
ranops.ps_domain := true;
f_ran_adapter_init(g_sgsn, mp_sgsn_cfg, "HNBGW_Test", ranops);
f_ran_adapter_start(g_sgsn);
f_init_mgcp(id);
f_init_vty("VirtHNBGW");
}
friend function f_shutdown_helper() runs on test_CT {
all component.stop;
setverdict(pass);
mtc.stop;
}
/* helper function to start all of the simulated hNodeBs */
function f_start_hnbs() runs on test_CT {
for (var integer i:= 0; i < NUM_HNB; i := i+1) {
f_hnbap_register(i);
}
}
/***********************************************************************
* code running in test_CT, preparing start of per-UE ConnHdlr
***********************************************************************/
/* inbound RUA connection establishment on Iuh side */
function IuhRanapCreateCallback(ContextId context_id, RUA_IEs.CN_DomainIndicator domain, charstring id)
runs on RUA_Emulation_CT return RUA_ConnHdlr {
log("CreateCallback");
return null;
}
/* inbound RUA connectionless data on Iuh side */
function IuhRanapUnitdataCallback(RANAP_PDU ranap)
runs on RUA_Emulation_CT return template RANAP_PDU {
log("UnitdataCallback");
return omit;
}
private function f_start_handler_create(TestHdlrParams pars) runs on test_CT return ConnHdlr {
var ConnHdlr vc_conn;
var charstring id := testcasename() & int2str(pars.hnb_idx);
vc_conn := ConnHdlr.create(id);
/* Iuh RUA part */
connect(vc_conn:RUA, vc_RUA[pars.hnb_idx]:CLIENT);
if (pars.ps_domain) {
/* SGSN side */
connect(vc_conn:BSSAP, g_sgsn.vc_RAN:CLIENT);
connect(vc_conn:BSSAP_PROC, g_sgsn.vc_RAN:PROC);
} else {
/* MSC side */
connect(vc_conn:BSSAP, g_msc.vc_RAN:CLIENT);
connect(vc_conn:BSSAP_PROC, g_msc.vc_RAN:PROC);
}
/* MGCP part */
connect(vc_conn:MGCP, vc_MGCP:MGCP_CLIENT);
connect(vc_conn:MGCP_PROC, vc_MGCP:MGCP_PROC);
return vc_conn;
}
private function f_start_handler_run(ConnHdlr vc_conn, void_fn fn, TestHdlrParams pars) runs on test_CT {
var charstring id := testcasename(); // & int2str(pars.ran_idx);
/* We cannot use vc_conn.start(f_init_handler(fn, id, pars)); as we cannot have
* a stand-alone 'derefers()' call, see https://www.eclipse.org/forums/index.php/t/1091364/ */
pars.hnb := g_hnb_cfg[pars.hnb_idx];
pars.mgcp_pars := valueof(t_MgcpParams);
vc_conn.start(derefers(fn)(id, pars));
}
function f_start_handler_with_pars(void_fn fn, template (value) TestHdlrParams pars)
runs on test_CT return ConnHdlr {
var ConnHdlr vc_conn;
vc_conn := f_start_handler_create(valueof(pars));
f_start_handler_run(vc_conn, fn, valueof(pars));
return vc_conn;
}
/***********************************************************************
* code running inside per-UE ConnHdlr
***********************************************************************/
type function void_fn(charstring id, TestHdlrParams pars) runs on ConnHdlr;
function f_init_handler(TestHdlrParams pars, float t_guard := 20.0) runs on ConnHdlr {
/* make parameters available via component variable */
g_pars := pars;
/* start guard timer and activate it as default */
g_Tguard.start(t_guard);
activate(as_Tguard_ConnHdlr());
/* TODO: CTRL? */
/* TODO: VTY? */
}
/* global altstep for global guard timer; */
private altstep as_Tguard_ConnHdlr() runs on ConnHdlr {
[] g_Tguard.timeout {
setverdict(fail, "Timeout of T_guard");
mtc.stop;
}
}
/* send RANAP on Iuh and expect it to show up on Iu */
function f_iuh2iu(template (present) RANAP_PDU tx, template RANAP_PDU exp_rx := omit)
runs on ConnHdlr return RANAP_PDU {
var RANAP_PDU rx;
timer T := 5.0;
if (istemplatekind(exp_rx, "omit")) {
exp_rx := tx;
}
RUA.send(tx);
T.start;
alt {
[] BSSAP.receive(exp_rx) -> value rx {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iu ", exp_rx);
}
}
return rx;
}
/* send RANAP on Iu and expect it to show up on Iuh */
function f_iu2iuh(template (present) RANAP_PDU tx, template RANAP_PDU exp_rx := omit)
runs on ConnHdlr return RANAP_PDU {
var RANAP_PDU rx;
timer T := 5.0;
if (istemplatekind(exp_rx, "omit")) {
exp_rx := tx;
}
BSSAP.send(tx);
T.start;
alt {
[] RUA.receive(exp_rx) -> value rx {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iuh ", exp_rx);
}
}
return rx;
}
/* send RANAP on Iuh and expect it to show up on Iu */
function f_iuh2iu_connect(template (present) RANAP_PDU tx, template RANAP_PDU exp_rx := omit)
runs on ConnHdlr return RANAP_PDU {
var RANAP_PDU rx;
timer T := 5.0;
if (istemplatekind(exp_rx, "omit")) {
exp_rx := tx;
}
/* create an expect on the Iu side for the random NAS portion */
var template (omit) octetstring nas := f_ranap_extract_l3(valueof(tx));
f_ran_register_exp(valueof(nas));
/* send it via Iuh (creating a RUA connection) */
RUA.send(RUA_Conn_Req:{g_pars.ps_domain, tx});
/* expect to receive it on the Iu side */
T.start;
alt {
[] BSSAP.receive(exp_rx) -> value rx {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iu ", exp_rx);
}
}
return rx;
}
function f_iuh2iu_disconnect(template (present) RANAP_PDU tx, RUA_IEs.Cause cause,
template RANAP_PDU exp_rx := omit)
runs on ConnHdlr return RANAP_PDU {
var RANAP_PDU rx
timer T := 5.0;
if (istemplatekind(exp_rx, "omit")) {
exp_rx := tx;
}
/* send it via Iuh (creating a RUA connection) */
RUA.send(RUA_Disc_Req:{tx, cause});
/* expect to receive it on the Iu side */
T.start;
alt {
[] BSSAP.receive(exp_rx) -> value rx {
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iu ", exp_rx);
return rx;
}
}
/* expect disconnect on the Iu side */
alt {
[] BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_DISC_IND) {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iu disconnect");
return rx;
}
}
return rx;
}
/* build a RANAP InitialUE based on the TestHdlrParams */
friend function f_build_initial_ue(TestHdlrParams pars) return RANAP_PDU {
var LAI lai := {
pLMNidentity := hex2oct(pars.hnb.lai.mcc_mnc),
lAC := int2oct(pars.hnb.lai.lac, 2),
iE_Extensions := omit
};
var SAI sai := {
pLMNidentity := lai.pLMNidentity,
lAC := lai.lAC,
sAC := int2oct(pars.hnb.sac, 2),
iE_Extensions := omit
}
var octetstring nas := f_rnd_octstring(10);
var IuSignallingConnectionIdentifier sigc_id := int2bit(f_rnd_int(1000), 24);
var GlobalRNC_ID grnc_id := {
pLMNidentity := lai.pLMNidentity,
rNC_ID := 2342
}
if (pars.ps_domain) {
var RAC rac := '00'O;
return valueof(ts_RANAP_initialUE_PS(lai, rac, sai, nas, sigc_id, grnc_id));
} else {
return valueof(ts_RANAP_initialUE_CS(lai, sai, nas, sigc_id, grnc_id));
}
}
/* build a RANAP RAB AssignmentResponse based on the TestHdlrParams */
friend function f_build_rab_ass_resp(TestHdlrParams pars) return RANAP_PDU {
var template RAB_SetupOrModifiedList rab_sml;
rab_sml := ts_RAB_SMdL(t_RAB_id(23), f_ts_RAB_TLA("192.168.1.23"), t_RAB_binding_port(1234));
return valueof(ts_RANAP_RabAssResp(rab_sml));
}
/***********************************************************************
* HNBAP Testing
***********************************************************************/
function f_hnbap_register(integer hnb_idx := 0) runs on test_CT
{
timer T := 2.0;
HNBAP[hnb_idx].send(tr_HNBAP_HNBRegisterRequest(char2oct("TTCN3 HNodeB"),
'00F110'O,
int2bit(1 + hnb_idx, 28),
int2oct(2, 2),
int2oct(3, 1),
int2oct(4, 2)));
T.start;
alt {
[] HNBAP[hnb_idx].receive(tr_HNBAP_HNBRegisterAccept(?)) {
setverdict(pass);
}
[] HNBAP[hnb_idx].receive(IUHEM_Event:?) {
repeat;
}
[] T.timeout {
setverdict(fail, "Timeout waiting for HNB Register Accept");
}
}
}
testcase TC_hnb_register() runs on test_CT {
f_init();
f_hnbap_register(0);
f_shutdown_helper();
}
/***********************************************************************
* RUA / RANAP Testing
***********************************************************************/
private template (value) TestHdlrParams
t_pars(integer imsi_suffix, boolean ps_domain := false,integer hnb_idx := 0) := {
hnb_idx := hnb_idx,
imsi := f_gen_imsi(imsi_suffix),
ps_domain := ps_domain,
hnb := omit /* filled in later */
}
/* Create an Iuh connection; send InitialUE; expect it to appear on new SCCP conenction */
friend function f_tc_initial_ue(charstring id, TestHdlrParams pars) runs on ConnHdlr {
f_init_handler(pars);
var RANAP_PDU tx := f_build_initial_ue(g_pars);
f_iuh2iu_connect(tx);
}
testcase TC_ranap_cs_initial_ue() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_initial_ue), t_pars(1));
vc_conn.done;
}
testcase TC_ranap_ps_initial_ue() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_initial_ue), t_pars(2, true));
vc_conn.done;
}
/* Reply to a received CRCX with an OK (or the reply configured in cpars), using the given parameters.
* Return true when an OK reply was sent, false otherwise.
* Count occurrence of Osmux, include Osmux parameters in the reply if necessary. */
function f_handle_crcx(inout MgcpParameters pars, MgcpCommand mgcp_cmd) return template MgcpResponse {
var CrcxResponse conn := pars.mgw_conn_1;
if (pars.got_crcx_count > 0) {
conn := pars.mgw_conn_2;
}
pars.got_crcx_count := pars.got_crcx_count + 1;
var MgcpMessage mgcp_msg := {
command := mgcp_cmd
}
var template MgcpResponse mgcp_resp;
var MgcpOsmuxCID osmux_cid;
var MgcpCallId call_id := f_MgcpCmd_extract_call_id(mgcp_cmd);
if (ispresent(pars.mgcp_call_id)) {
if (pars.mgcp_call_id != call_id) {
setverdict(fail, "CRCX contained unexpected call id. Expected:", pars.mgcp_call_id, " got:", call_id);
mtc.stop;
}
} else {
pars.mgcp_call_id := call_id;
}
/* When the endpoint contains a wildcard we keep the endpoint
* identifier we have set up in pars. Otherwise we use the
* endpoint name that the call agent has supplied */
if (match(mgcp_cmd.line.ep, t_MGCP_EP_wildcard) == false) {
pars.mgcp_ep := mgcp_cmd.line.ep;
}
if (conn.resp == -1) {
/* Reply with rror */
var MgcpResponse mgcp_rsp := {
line := {
code := "542",
trans_id := mgcp_cmd.line.trans_id,
string := "FORCED_FAIL"
},
sdp := omit
}
var MgcpParameter mgcp_rsp_param := {
code := "Z",
val := pars.mgcp_ep
};
mgcp_rsp.params[0] := mgcp_rsp_param;
return mgcp_rsp;
}
if (conn.resp == 0) {
/* Do not reply at all */
return omit;
}
if (conn.resp != 1) {
setverdict(fail, "Unexpected value for pars.mgw_conn_*.resp, expect -1, 0 or 1");
mtc.stop;
}
var SDP_Message sdp := valueof(ts_SDP(conn.mgw_rtp_ip, conn.mgw_rtp_ip,
hex2str(pars.mgcp_call_id), "42",
conn.mgw_rtp_port,
{ int2str(pars.rtp_payload_type) },
{ valueof(ts_SDP_rtpmap(pars.rtp_payload_type,
pars.rtp_sdp_format)),
valueof(ts_SDP_ptime(20)) }));
if (f_mgcp_contains_par(mgcp_msg, "X-OSMUX")) {
if (not pars.use_osmux) {
setverdict(fail, "MSC sent X-Osmux parameter in MGCP, but not expecting any Osmux");
mtc.stop;
}
pars.got_osmux_count := pars.got_osmux_count + 1;
/* we expect MSC to use wildcard here, i.e. osmux_cid == -1 */
osmux_cid := f_MgcpCmd_extract_osmux_cid(mgcp_cmd);
log("f_handle_crcx(): got Osmux CID: ", osmux_cid);
if (osmux_cid != -1) {
setverdict(fail, "MSC using unexpected CID " & int2str(osmux_cid) & " != -1");
mtc.stop;
}
osmux_cid := 0;
mgcp_resp := ts_CRCX_ACK_osmux(mgcp_cmd.line.trans_id, conn.mgcp_connection_id, osmux_cid, sdp);
} else {
mgcp_resp := ts_CRCX_ACK(mgcp_cmd.line.trans_id, conn.mgcp_connection_id, sdp);
}
f_mgcp_par_append(mgcp_resp.params, ts_MgcpParSpecEP(pars.mgcp_ep));
return mgcp_resp;
}
friend function f_create_rab(inout MgcpParameters pars) runs on ConnHdlr {
f_rab_ass_req(pars);
f_rab_ass_resp(pars);
}
friend function f_rab_ass_req(inout MgcpParameters pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
var template RAB_SetupOrModifyList rab_sml;
timer T := 5.0;
/* Send RAB Assignment Request */
rab_sml := ts_RAB_SML(t_RAB_id(23), f_ts_RAB_TLA(pars.cn_rtp_ip), t_RAB_binding_port(pars.cn_rtp_port));
tx := valueof(ts_RANAP_RabAssReq(rab_sml));
BSSAP.send(tx);
T.start;
/* Handle MGCP CRCX */
alt {
[] MGCP.receive(tr_CRCX) -> value mgcp_cmd {
log("CRCX1", mgcp_cmd);
var template MgcpResponse mgcp_rsp := f_handle_crcx(pars, mgcp_cmd);
MGCP.send(valueof(mgcp_rsp));
}
[] T.timeout {
setverdict(fail, "Timeout waiting for MGCP");
}
}
/* Expect RAB Assignment Request with IP/port from CRCX ACK via Iuh */
rab_sml := ts_RAB_SML(t_RAB_id(23), f_ts_RAB_TLA(pars.mgw_conn_1.mgw_rtp_ip), t_RAB_binding_port(pars.mgw_conn_1.mgw_rtp_port));
tx := valueof(ts_RANAP_RabAssReq(rab_sml));
alt {
[] RUA.receive(tx) {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iuh ", tx);
}
}
}
friend function f_rab_ass_resp(inout MgcpParameters pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
var template RAB_SetupOrModifiedList rab_smdl;
timer T := 5.0;
/* Send back RAB Assignment Response via Iuh */
rab_smdl := ts_RAB_SMdL(t_RAB_id(23), f_ts_RAB_TLA(pars.hnb_rtp_ip), t_RAB_binding_port(pars.hnb_rtp_port));
tx := valueof(ts_RANAP_RabAssResp(rab_smdl));
RUA.send(tx);
T.start;
interleave {
/* Expect MDCX with IP/port from RAB Assignment Response */
[] MGCP.receive(tr_MDCX(tr_SDP(pars.hnb_rtp_ip, pars.hnb_rtp_port))) -> value mgcp_cmd {
log("MDCX1", mgcp_cmd);
/* Verify SDP of MDCX */
var SDP_Message sdp := valueof(ts_SDP(pars.mgw_conn_1.mgw_rtp_ip, pars.mgw_conn_1.mgw_rtp_ip, hex2str(pars.mgcp_call_id), "42", pars.mgw_conn_1.mgw_rtp_port,
{ int2str(pars.rtp_payload_type) }, { valueof(ts_SDP_rtpmap(pars.rtp_payload_type, pars.rtp_sdp_format)), valueof(ts_SDP_ptime(20)) } ));
var template MgcpResponse mgcp_rsp := ts_MDCX_ACK(mgcp_cmd.line.trans_id, pars.mgw_conn_1.mgcp_connection_id, sdp);
MGCP.send(valueof(mgcp_rsp));
}
/* Handle CRCX for second leg of endpoint, answer with IP/port */
[] MGCP.receive(tr_CRCX(pars.mgcp_ep, tr_SDP(pars.cn_rtp_ip, pars.cn_rtp_port))) -> value mgcp_cmd {
log("CRCX2", mgcp_cmd);
/* Verify SDP of CRCX */
var template MgcpResponse mgcp_rsp := f_handle_crcx(pars, mgcp_cmd);
MGCP.send(valueof(mgcp_rsp));
}
}
/* Expect RAB Assignment Response with IP/port from second CRCX ACK */
rab_smdl := ts_RAB_SMdL(t_RAB_id(23), f_ts_RAB_TLA(pars.mgw_conn_2.mgw_rtp_ip), t_RAB_binding_port(pars.mgw_conn_2.mgw_rtp_port));
tx := valueof(ts_RANAP_RabAssResp(rab_smdl));
alt {
[] BSSAP.receive(tx) {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iuh ", tx);
}
}
}
private altstep as_mgcp_dlcx(inout TestHdlrParams pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
[] MGCP.receive(tr_DLCX(pars.mgcp_pars.mgcp_ep)) -> value mgcp_cmd {
log("DLCX", mgcp_cmd);
MGCP.send(ts_DLCX_ACK2(mgcp_cmd.line.trans_id));
pars.mgcp_pars.got_dlcx_count := pars.mgcp_pars.got_dlcx_count + 1;
if (pars.mgcp_pars.got_dlcx_count != pars.mgcp_pars.got_crcx_count) {
repeat;
}
setverdict(pass);
}
}
friend function f_tc_rab_assignment(charstring id, TestHdlrParams pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
timer T := 5.0;
f_init_handler(pars);
f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
tx := f_build_initial_ue(g_pars);
f_iuh2iu_connect(tx);
f_create_rab(pars.mgcp_pars);
/* Send Iu Release */
tx := valueof(ts_RANAP_IuReleaseCommand(ts_RanapCause_om_intervention));
f_iu2iuh(tx);
T.start;
alt {
[] as_mgcp_dlcx(pars) {}
[] T.timeout {
setverdict(fail, "Timeout waiting for DLCX");
}
}
tx := valueof(ts_RANAP_IuReleaseComplete());
f_iuh2iu(tx);
}
testcase TC_rab_assignment() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_rab_assignment), t_pars(3));
vc_conn.done;
}
friend function f_tc_rab_assign_fail(charstring id, TestHdlrParams pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
timer T := 5.0;
f_init_handler(pars);
f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
tx := f_build_initial_ue(g_pars);
f_iuh2iu_connect(tx);
f_rab_ass_req(pars.mgcp_pars);
/* Send RAB failed list in response */
tx := valueof(ts_RANAP_RabAssResp(rab_fl := ts_RAB_FL(t_RAB_id(23), ts_RanapCause_om_intervention)));
f_iuh2iu(tx);
T.start;
alt {
[] as_mgcp_dlcx(pars) {}
[] T.timeout {
setverdict(fail, "Timeout waiting for DLCX");
}
}
}
testcase TC_rab_assign_fail() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_rab_assign_fail), t_pars(4));
vc_conn.done;
}
friend function f_tc_rab_release(charstring id, TestHdlrParams pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
timer T := 15.0;
f_init_handler(pars);
f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
tx := f_build_initial_ue(g_pars);
f_iuh2iu_connect(tx);
f_create_rab(pars.mgcp_pars);
/* Send RAB Release */
tx := valueof(ts_RANAP_RabAssReq(rab_rl := ts_RAB_RL(t_RAB_id(23), ts_RanapCause_om_intervention)));
BSSAP.send(tx);
T.start;
alt {
[] as_mgcp_dlcx(pars) {}
[] T.timeout {
setverdict(fail, "Timeout waiting for DLCX");
}
}
alt {
[] RUA.receive(tx) {
setverdict(pass);
}
[] T.timeout {
setverdict(fail, "Timeout waiting for Iuh ", tx);
}
}
}
testcase TC_rab_release() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_rab_release), t_pars(5));
vc_conn.done;
}
friend function f_tc_rab_assign_mgcp_to(charstring id, TestHdlrParams pars) runs on ConnHdlr {
var MgcpCommand mgcp_cmd;
var RANAP_PDU tx;
var template RAB_SetupOrModifyList rab_sml;
timer T := 15.0;
T.start;
f_init_handler(pars);
f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
tx := f_build_initial_ue(g_pars);
f_iuh2iu_connect(tx);
/* Send RAB Assignment Request */
rab_sml := ts_RAB_SML(t_RAB_id(23), f_ts_RAB_TLA(pars.mgcp_pars.cn_rtp_ip), t_RAB_binding_port(pars.mgcp_pars.cn_rtp_port));
tx := valueof(ts_RANAP_RabAssReq(rab_sml));
BSSAP.send(tx);
/* Ignore MGCP CRCX */
alt {
[] MGCP.receive(tr_CRCX) -> value mgcp_cmd {
log("Ignoreing CRCX1", mgcp_cmd);
repeat;
}
[] BSSAP.receive(tr_RANAP_IuReleaseRequest(?)) { }
[] T.timeout {
setverdict(fail, "Timeout waiting for IuRelease");
}
}
/* Send Iu Release */
tx := valueof(ts_RANAP_IuReleaseCommand(ts_RanapCause_om_intervention));
f_iu2iuh(tx);
tx := valueof(ts_RANAP_IuReleaseComplete());
f_iuh2iu(tx);
}
testcase TC_rab_assign_mgcp_to() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_rab_assign_mgcp_to), t_pars(6));
vc_conn.done;
}
/* Create an Iuh connection; send InitialUE; transceive data both directions */
friend function f_tc_ranap_bidir(charstring id, TestHdlrParams pars) runs on ConnHdlr {
f_init_handler(pars);
/* HNB -> MSC: InitialUE */
f_iuh2iu_connect(f_build_initial_ue(g_pars));
/* MSC <- HNB: DirectTransfer */
f_iu2iuh(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
/* MSC -> HNB: DirectTransfer */
f_iuh2iu(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
/* HNB <- MSC: CommonID */
f_iu2iuh(ts_RANAP_CommonId(hex2oct(pars.imsi)));
}
testcase TC_ranap_cs_bidir() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_bidir), t_pars(3));
vc_conn.done;
}
testcase TC_ranap_ps_bidir() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_bidir), t_pars(4, true));
vc_conn.done;
}
private function f_tc_ranap_mo_disconnect(charstring id, TestHdlrParams pars) runs on ConnHdlr {
f_init_handler(pars);
/* HNB -> MSC: InitialUE */
f_iuh2iu_connect(f_build_initial_ue(g_pars));
/* MSC <- HNB: DirectTransfer */
f_iu2iuh(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
/* MSC -> HNB: DirectTransfer */
f_iuh2iu(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
/* MSC <- HNB: RUA disconnect */
f_iuh2iu_disconnect(ts_RANAP_IuReleaseComplete, RUA_IEs.Cause:{misc:=processing_overload});
}
testcase TC_ranap_cs_mo_disconnect() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_mo_disconnect), t_pars(5));
vc_conn.done;
}
testcase TC_ranap_ps_mo_disconnect() runs on test_CT {
var ConnHdlr vc_conn;
f_init();
f_start_hnbs();
vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_mo_disconnect), t_pars(6));
vc_conn.done;
}
control {
execute(TC_hnb_register());
execute(TC_ranap_cs_initial_ue());
execute(TC_ranap_ps_initial_ue());
execute(TC_ranap_cs_bidir());
execute(TC_ranap_ps_bidir());
execute(TC_rab_assignment());
execute(TC_rab_release());
execute(TC_rab_assign_fail());
execute(TC_rab_assign_mgcp_to());
execute(TC_ranap_cs_mo_disconnect());
execute(TC_ranap_ps_mo_disconnect());
}
}