ipa: Further progress on the bsc-nat test suite

This commit is contained in:
Harald Welte 2017-11-24 20:40:12 +01:00
parent 19ad52b3b9
commit c82eef458d
9 changed files with 294 additions and 36 deletions

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@ -43,9 +43,12 @@ function main(charstring remote_ip, PortNumber remote_port,
/* connect MTP3 service provider (IPA) to lower side of SCCP */ /* connect MTP3 service provider (IPA) to lower side of SCCP */
connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT); connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT);
/* connect BSSNAP dispatcher to upper side of SCCP */ /* connect BSSMAP dispatcher to upper side of SCCP */
connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT); connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT);
/* connect BSSMAP dispatcher to IPA_Emulation MGCP */
connect(vc_BSSMAP:MGCP, vc_IPA:IPA_MGCP_PORT);
vc_IPA.start(IPA_Emulation.main_client(remote_ip, remote_port, local_ip, local_port)); vc_IPA.start(IPA_Emulation.main_client(remote_ip, remote_port, local_ip, local_port));
vc_SCCP.start(SCCPStart(sccp_pars)); vc_SCCP.start(SCCPStart(sccp_pars));
vc_BSSMAP.start(BSSMAP_Emulation.main(BSC_MS_BssmapOps)); vc_BSSMAP.start(BSSMAP_Emulation.main(BSC_MS_BssmapOps));

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@ -7,6 +7,10 @@ import from BSSAP_Types all;
import from BSSMAP_Emulation all; import from BSSMAP_Emulation all;
import from BSSMAP_Templates all; import from BSSMAP_Templates all;
import from MGCP_Types all;
import from MGCP_Templates all;
import from SDP_Types all;
/* this component represents a single subscriber connection at the MSC. /* this component represents a single subscriber connection at the MSC.
* There is a 1:1 mapping between SCCP connections and BSSAP_ConnHdlr components. * There is a 1:1 mapping between SCCP connections and BSSAP_ConnHdlr components.
* We inherit all component variables, ports, functions, ... from BSSAP_ConnHdlr */ * We inherit all component variables, ports, functions, ... from BSSAP_ConnHdlr */
@ -15,6 +19,11 @@ type component MSC_ConnHdlr extends BSSAP_ConnHdlr {
var uint5_t g_e1_timeslot; var uint5_t g_e1_timeslot;
/* SCCP Connecction Identifier for the underlying SCCP connection */ /* SCCP Connecction Identifier for the underlying SCCP connection */
var integer g_sccp_conn_id; var integer g_sccp_conn_id;
var MSC_State g_state := MSC_STATE_NONE;
var MgcpEndpoint g_ep_name;
var MgcpCallId g_call_id;
var MgcpConnectionId g_mgcp_conn_id;
} }
/* Callback function from general BSSMAP_Emulation whenever a new incoming /* Callback function from general BSSMAP_Emulation whenever a new incoming
@ -49,30 +58,98 @@ const BssmapOps MSC_BssmapOps := {
unitdata_cb := refers(UnitdataCallback) unitdata_cb := refers(UnitdataCallback)
} }
type enumerated MSC_State {
MSC_STATE_NONE,
MSC_STATE_WAIT_ASS_COMPL,
MSC_STATE_WAIT_CRCX_ACK,
MSC_STATE_WAIT_MDCX_ACK,
MSC_STATE_WAIT_CLEAR_COMPL,
MSC_STATE_WAIT_DLCX_ACK
}
private function f_mgcp_alloc_tid() return MgcpTransId {
return int2str(float2int(rnd()*2147483647.0));
}
private function f_mgcp_alloc_call_id() return MgcpCallId {
return int2hex(float2int(rnd()*2147483647.0), 8);
}
function extract_conn_id(MgcpResponse resp) return MgcpConnectionId {
var integer i;
for (i := 0; i < lengthof(resp.params); i := i + 1) {
var MgcpParameter par := resp.params[i];
if (par.code == "I") {
return str2hex(par.val);
}
}
setverdict(fail);
return '00000000'H;
}
/* main function processing various incoming events */ /* main function processing various incoming events */
function main(integer connection_id, integer timeslot) runs on MSC_ConnHdlr { function main(integer connection_id, integer timeslot) runs on MSC_ConnHdlr {
g_sccp_conn_id := connection_id; var MgcpResponse mgcp_rsp;
g_e1_timeslot := 1; /* FIXME */ g_e1_timeslot := 1; /* FIXME */
g_sccp_conn_id := connection_id;
g_call_id := f_mgcp_alloc_call_id();
g_ep_name := hex2str(int2hex(g_e1_timeslot, 1)) & "@mgw";
while (true) { while (true) {
var PDU_BSSAP bssap; var PDU_BSSAP bssap;
alt { alt {
/* new SCCP-level connection indication from BSC */ /* new SCCP-level connection indication from BSC */
[] BSSAP.receive(tr_BSSMAP_ComplL3) -> value bssap { [g_state == MSC_STATE_NONE] BSSAP.receive(tr_BSSMAP_ComplL3) -> value bssap {
/* respond with ASSIGNMENT CMD */ /* respond with ASSIGNMENT CMD */
g_state := MSC_STATE_WAIT_ASS_COMPL;
BSSAP.send(ts_BSSMAP_AssignmentReq(0, g_e1_timeslot)); BSSAP.send(ts_BSSMAP_AssignmentReq(0, g_e1_timeslot));
/* FIXME: Send MGCP */ }
[g_state == MSC_STATE_WAIT_ASS_COMPL] BSSAP.receive(tr_BSSMAP_AssignmentComplete) {
/* FIXME: Send MGCP CRCX */
g_state := MSC_STATE_WAIT_CRCX_ACK;
var MgcpTransId trans_id := f_mgcp_alloc_tid();
//template SDP_Message sdp := omit;
BSSAP.send(ts_CRCX(trans_id, g_ep_name, "recvonly", g_call_id)); //, sdp));
} }
/* /*
[] BSSAP.receive(tr_BSSMAP_AssignmentCompl) {
}
[] BSSAP.receive(tr_BSSMAP_AssignmentFail) { [] BSSAP.receive(tr_BSSMAP_AssignmentFail) {
} }
*/ */
/* receive CRCX ACK: transmit MDCX */
[g_state == MSC_STATE_WAIT_CRCX_ACK] BSSAP.receive(tr_CRCX_ACK) -> value mgcp_rsp {
/* extract connection ID */
g_mgcp_conn_id := extract_conn_id(mgcp_rsp);
g_state := MSC_STATE_WAIT_MDCX_ACK;
var MgcpTransId trans_id := f_mgcp_alloc_tid();
BSSAP.send(ts_MDCX(trans_id, g_ep_name, "sendrecv", g_call_id, g_mgcp_conn_id));
}
/* receive MDCX ACK: wait + transmit CLEAR COMMAND */
[g_state == MSC_STATE_WAIT_MDCX_ACK] BSSAP.receive(tr_CRCX_ACK) -> value mgcp_rsp {
g_state := MSC_STATE_WAIT_CLEAR_COMPL
BSSAP.send(ts_BSSMAP_ClearCommand(0));
}
/* CLEAR COMPLETE from BSS (response to CLEAR COMMAND) */
[g_state == MSC_STATE_WAIT_CLEAR_COMPL] BSSAP.receive(ts_BSSMAP_ClearComplete) {
/* send DLCX */
g_state := MSC_STATE_WAIT_DLCX_ACK;
var MgcpTransId trans_id := f_mgcp_alloc_tid();
BSSAP.send(ts_DLCX(trans_id, g_ep_name, g_call_id));
}
[g_state == MSC_STATE_WAIT_DLCX_ACK] BSSAP.receive(tr_DLCX_ACK) {
setverdict(pass);
self.stop;
}
/* TODO: CLEAR REQUEST from BSS */ /* TODO: CLEAR REQUEST from BSS */
/* TODO: CLEAR COMPLETE from BSS (response to CLEAR COMMAND) */
[] BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND) { [] BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND) {
setverdict(fail);
self.stop; self.stop;
} }

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@ -46,6 +46,9 @@ function main(charstring local_ip, PortNumber local_port,
/* connect BSSNAP dispatcher to upper side of SCCP */ /* connect BSSNAP dispatcher to upper side of SCCP */
connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT); connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT);
/* connect BSSMAP dispatcher to IPA_Emulation MGCP */
connect(vc_BSSMAP:MGCP, vc_IPA:IPA_MGCP_PORT);
vc_IPA.start(IPA_Emulation.main_server(local_ip, local_port)); vc_IPA.start(IPA_Emulation.main_server(local_ip, local_port));
vc_SCCP.start(SCCPStart(sccp_pars)); vc_SCCP.start(SCCPStart(sccp_pars));
vc_BSSMAP.start(BSSMAP_Emulation.main(MSC_BssmapOps)); vc_BSSMAP.start(BSSMAP_Emulation.main(MSC_BssmapOps));

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@ -16,7 +16,7 @@ gen_links() {
#gen_links $DIR $FILES #gen_links $DIR $FILES
DIR=$BASEDIR/titan.Libraries.TCCUsefulFunctions/src DIR=$BASEDIR/titan.Libraries.TCCUsefulFunctions/src
FILES="TCCInterface_Functions.ttcn TCCConversion_Functions.ttcn TCCConversion.cc TCCConversion.hh TCCInterface.cc TCCInterface_ip.h" FILES="TCCInterface_Functions.ttcn TCCConversion_Functions.ttcn TCCConversion.cc TCCConversion.hh TCCInterface.cc TCCInterface_ip.h SDP_EncDec.cc"
gen_links $DIR $FILES gen_links $DIR $FILES
DIR=$BASEDIR/titan.TestPorts.Common_Components.Socket-API/src DIR=$BASEDIR/titan.TestPorts.Common_Components.Socket-API/src
@ -35,7 +35,7 @@ gen_links $DIR $FILES
DIR=../SCCP_CNL113341/src DIR=../SCCP_CNL113341/src
FILES="SCCP_Emulation.ttcn SCCP_EncDec.cc SCCP_Mapping.ttcnpp SCCP_Types.ttcn SCCPasp_Types.ttcn" FILES="SCCP_Emulation.ttcn SCCP_EncDec.cc SCCP_Mapping.ttcnpp SCCP_Types.ttcn SCCPasp_Types.ttcn"
gen_links $DIR $FILES gen_links $DIR $FILES
ln -s SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn ln -sf SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
FILES="BSSAP_Types.ttcn" FILES="BSSAP_Types.ttcn"
@ -45,7 +45,15 @@ DIR=$BASEDIR/titan.ProtocolModules.MobileL3_v13.4.0/src
FILES="MobileL3_CC_Types.ttcn MobileL3_CommonIE_Types.ttcn MobileL3_GMM_SM_Types.ttcn MobileL3_MM_Types.ttcn MobileL3_RRM_Types.ttcn MobileL3_SMS_Types.ttcn MobileL3_SS_Types.ttcn MobileL3_Types.ttcn" FILES="MobileL3_CC_Types.ttcn MobileL3_CommonIE_Types.ttcn MobileL3_GMM_SM_Types.ttcn MobileL3_MM_Types.ttcn MobileL3_RRM_Types.ttcn MobileL3_SMS_Types.ttcn MobileL3_SS_Types.ttcn MobileL3_Types.ttcn"
gen_links $DIR $FILES gen_links $DIR $FILES
DIR=$BASEDIR/titan.ProtocolModules.SDP/src
FILES="SDP_EncDec.cc SDP_Types.ttcn SDP_parse_.tab.c SDP_parse_.tab.h SDP_parse_parser.h SDP_parser.l
SDP_parser.y lex.SDP_parse_.c"
gen_links $DIR $FILES
DIR=$BASEDIR/titan.ProtocolModules.RTP/src
FILES="RTP_EncDec.cc RTP_Types.ttcn"
gen_links $DIR $FILES
DIR=../library DIR=../library
FILES="General_Types.ttcn Osmocom_Types.ttcn IPA_Types.ttcn IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc IPA_Emulation.ttcn L3_Templates.ttcn BSSMAP_Templates.ttcn BSSMAP_Emulation.ttcn" FILES="General_Types.ttcn Osmocom_Types.ttcn IPA_Types.ttcn IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc IPA_Emulation.ttcn L3_Templates.ttcn BSSMAP_Templates.ttcn BSSMAP_Emulation.ttcn MGCP_Types.ttcn MGCP_Templates.ttcn"
gen_links $DIR $FILES gen_links $DIR $FILES

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@ -2,7 +2,7 @@
MAIN=IPA_Test.ttcn MAIN=IPA_Test.ttcn
FILES="*.ttcn SCCP_EncDec.cc IPA_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc" FILES="*.ttcn SCCP_EncDec.cc IPA_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc RTP_EncDec.cc SDP_EncDec *.c"
ttcn3_makefilegen -l -f $MAIN $FILES ttcn3_makefilegen -l -f $MAIN $FILES
sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile

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@ -4,7 +4,9 @@ import from SCCP_Emulation all;
import from SCCPasp_Types all; import from SCCPasp_Types all;
import from BSSAP_Types all; import from BSSAP_Types all;
import from BSSMAP_Templates all; import from BSSMAP_Templates all;
//import from MSC_ConnectionHandler all; import from MGCP_Types all;
import from MGCP_Templates all;
import from IPA_Emulation all;
/* General "base class" component definition, of which specific implementations /* General "base class" component definition, of which specific implementations
* derive themselves by means of the "extends" feature */ * derive themselves by means of the "extends" feature */
@ -29,7 +31,7 @@ type record BSSAP_Conn_Req {
/* port between individual per-connection components and this dispatcher */ /* port between individual per-connection components and this dispatcher */
type port BSSAP_Conn_PT message { type port BSSAP_Conn_PT message {
inout PDU_BSSAP, BSSAP_Conn_Prim, BSSAP_Conn_Req; inout PDU_BSSAP, BSSAP_Conn_Prim, BSSAP_Conn_Req, MgcpCommand, MgcpResponse;
} with { extension "internal" }; } with { extension "internal" };
@ -37,7 +39,11 @@ type port BSSAP_Conn_PT message {
type record ConnectionData { type record ConnectionData {
/* reference to the instance of the per-connection component */ /* reference to the instance of the per-connection component */
BSSAP_ConnHdlr comp_ref, BSSAP_ConnHdlr comp_ref,
integer sccp_conn_id integer sccp_conn_id,
/* most recent MGCP transaction ID (Used on MSC side) */
MgcpTransId mgcp_trans_id optional,
/* CIC that has been used for voice of this channel (BSC side) */
integer cic optional
} }
type component BSSMAP_Emulation_CT { type component BSSMAP_Emulation_CT {
@ -45,6 +51,8 @@ type component BSSMAP_Emulation_CT {
port SCCPasp_PT SCCP; port SCCPasp_PT SCCP;
/* BSSAP port to the per-connection clients */ /* BSSAP port to the per-connection clients */
port BSSAP_Conn_PT CLIENT; port BSSAP_Conn_PT CLIENT;
/* MGCP port */
port IPA_MGCP_PT MGCP;
/* use 16 as this is also the number of SCCP connections that SCCP_Emulation can handle */ /* use 16 as this is also the number of SCCP connections that SCCP_Emulation can handle */
var ConnectionData ConnectionTable[16]; var ConnectionData ConnectionTable[16];
@ -85,6 +93,56 @@ runs on BSSMAP_Emulation_CT return BSSAP_ConnHdlr {
self.stop; self.stop;
} }
/* resolve component reference by CIC */
private function f_comp_by_mgcp_tid(MgcpTransId tid)
runs on BSSMAP_Emulation_CT return BSSAP_ConnHdlr {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].mgcp_trans_id == tid) {
return ConnectionTable[i].comp_ref;
}
}
log("BSSMAP Connection table not found by MGCP Transaction ID ", tid);
self.stop;
}
private function f_comp_store_mgcp_tid(BSSAP_ConnHdlr client, MgcpTransId tid)
runs on BSSMAP_Emulation_CT {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].comp_ref == client) {
ConnectionTable[i].mgcp_trans_id := tid;
return;
}
}
log("BSSMAP Connection table not found by component ", client);
self.stop;
}
private function f_comp_by_cic(integer cic)
runs on BSSMAP_Emulation_CT return BSSAP_ConnHdlr {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].cic == cic) {
return ConnectionTable[i].comp_ref;
}
}
log("BSSMAP Connection table not found by CIC ", cic);
self.stop;
}
private function f_comp_store_cic(BSSAP_ConnHdlr client, integer cic)
runs on BSSMAP_Emulation_CT {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].comp_ref == client) {
ConnectionTable[i].cic := cic;
return;
}
}
log("BSSMAP Connection table not found by component ", client);
}
/* resolve connection ID by component reference */ /* resolve connection ID by component reference */
private function f_conn_id_by_comp(BSSAP_ConnHdlr client) private function f_conn_id_by_comp(BSSAP_ConnHdlr client)
runs on BSSMAP_Emulation_CT return integer { runs on BSSMAP_Emulation_CT return integer {
@ -113,6 +171,8 @@ runs on BSSMAP_Emulation_CT {
for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) { for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) {
ConnectionTable[i].comp_ref := null; ConnectionTable[i].comp_ref := null;
ConnectionTable[i].sccp_conn_id := -1; ConnectionTable[i].sccp_conn_id := -1;
ConnectionTable[i].mgcp_trans_id := omit;
ConnectionTable[i].cic := omit;
} }
} }
@ -178,6 +238,8 @@ function main(BssmapOps ops) runs on BSSMAP_Emulation_CT {
var BSSAP_Conn_Req creq; var BSSAP_Conn_Req creq;
var BSSAP_ConnHdlr vc_conn; var BSSAP_ConnHdlr vc_conn;
var PDU_BSSAP bssap; var PDU_BSSAP bssap;
var MgcpCommand mgcp_req;
var MgcpResponse mgcp_resp;
alt { alt {
/* SCCP -> Client: UNIT-DATA (connectionless SCCP) from a BSC */ /* SCCP -> Client: UNIT-DATA (connectionless SCCP) from a BSC */
@ -266,14 +328,62 @@ function main(BssmapOps ops) runs on BSSMAP_Emulation_CT {
[] CLIENT.receive(PDU_BSSAP:?) -> value bssap sender vc_conn { [] CLIENT.receive(PDU_BSSAP:?) -> value bssap sender vc_conn {
var integer conn_id := f_conn_id_by_comp(vc_conn); var integer conn_id := f_conn_id_by_comp(vc_conn);
/* MSC Side: If this is an assignment command, store CIC */
if (ischosen(bssap.pdu.bssmap.assignmentRequest) and
ispresent(bssap.pdu.bssmap.assignmentRequest.circuitIdentityCode)) {
var BSSMAP_IE_CircuitIdentityCode cic_ie :=
bssap.pdu.bssmap.assignmentRequest.circuitIdentityCode;
var integer cic := (oct2int(cic_ie.cicHigh) * 256) + oct2int(cic_ie.cicLow);
f_comp_store_cic(vc_conn, cic);
}
/* encode + send it to dispatcher */ /* encode + send it to dispatcher */
var octetstring userdata := enc_PDU_BSSAP(bssap); var octetstring userdata := enc_PDU_BSSAP(bssap);
SCCP.send(t_ASP_N_DATA_req(userdata, conn_id, omit)); SCCP.send(t_ASP_N_DATA_req(userdata, conn_id, omit));
} }
/* Handling of MGCP in IPA SCCPLite case. This predates 3GPP AoIP
* and uses a MGCP session in parallel to BSSAP. BSSAP uses CIC
* as usual, and MGCP uses "CIC@mgw" endpoint naming, where CIC
* is printed as hex string, e.g. a@mgw for CIC 10 */
/* CLIENT -> MGCP */
[] CLIENT.receive(MgcpCommand:?) -> value mgcp_req sender vc_conn {
/* MGCP request from Handler (we're MSC) */
/* store the transaction ID we've seen */
f_comp_store_mgcp_tid(vc_conn, mgcp_req.line.trans_id);
/* simply forward any MGCP from the client to the port */
MGCP.send(mgcp_req);
}
[] CLIENT.receive(MgcpResponse:?) -> value mgcp_resp sender vc_conn {
/* MGCP response from Handler (we're BSC/MGW) */
/* simply forward any MGCP from the client to the port */
MGCP.send(mgcp_resp);
}
/* MGCP -> CLIENT */
[] MGCP.receive(MgcpCommand:?) -> value mgcp_req {
/* MGCP request from network side (we're BSC/MGW) */
/* Extract CIC from local part of endpoint name */
var integer cic := f_mgcp_ep_extract_cic(mgcp_req.line.ep);
/* Resolve the vc_conn by the CIC */
vc_conn := f_comp_by_cic(cic);
CLIENT.send(mgcp_req) to vc_conn;
}
[] MGCP.receive(MgcpResponse:?) -> value mgcp_resp {
/* MGCP response from network side (we're MSC) */
/* Resolve the vc_conn by the transaction ID */
vc_conn := f_comp_by_mgcp_tid(mgcp_resp.line.trans_id);
CLIENT.send(mgcp_resp) to vc_conn;
}
} }
} }
} }
private function f_mgcp_ep_extract_cic(charstring inp) return integer {
var charstring local_part := regexp(inp, "(.*)@(.*)", 0);
return hex2int(str2hex(local_part));
}
} }

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@ -18,6 +18,13 @@ module IPA_CodecPort {
octetstring msg octetstring msg
} }
template IPA_Send t_IPA_Send(ConnectionId conn_id, IpaStreamId stream_id,
octetstring msg, template IpaExtStreamId stream_id_ext := omit) := {
connId := conn_id,
streamId := stream_id,
streamIdExt := stream_id_ext,
msg := msg
}
/* 'stream' contains the octets received so far, we must return the total length */ /* 'stream' contains the octets received so far, we must return the total length */
function f_IPA_getMsgLen(in octetstring stream, inout ro_integer args) return integer { function f_IPA_getMsgLen(in octetstring stream, inout ro_integer args) return integer {

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@ -7,6 +7,8 @@ import from IPL4asp_Types all;
import from MTP3asp_Types all; import from MTP3asp_Types all;
import from MTP3asp_PortType all; import from MTP3asp_PortType all;
import from MGCP_Types all;
/* /*
modulepar { modulepar {
} }
@ -19,7 +21,7 @@ type enumerated IpaMode {
type record ASP_IPA_Unitdata { type record ASP_IPA_Unitdata {
IpaStreamId streamId, IpaStreamId streamId,
IpaStreamIdExt streamIdExt optional, IpaExtStreamId streamIdExt optional,
octetstring payload octetstring payload
} }
@ -27,16 +29,24 @@ type port IPA_SP_PT message {
inout ASP_IPA_Unitdata; inout ASP_IPA_Unitdata;
} with { extension "internal" } } with { extension "internal" }
type port IPA_MGCP_PT message {
inout MgcpCommand, MgcpResponse;
} with { extension "internal" }
type component IPA_Emulation_CT { type component IPA_Emulation_CT {
/* down-facing port to IPA codec port */ /* down-facing port to IPA codec port */
port IPA_CODEC_PT IPA_PORT; port IPA_CODEC_PT IPA_PORT;
/* up-facing port to SCCP */ /* up-facing port to SCCP */
port MTP3asp_SP_PT MTP3_SP_PORT; port MTP3asp_SP_PT MTP3_SP_PORT;
/* up-facing port for MGCP */
port IPA_MGCP_PT IPA_MGCP_PORT;
/* up-facing port for other streams */ /* up-facing port for other streams */
port IPA_SP_PT IPA_SP_PORT; port IPA_SP_PT IPA_SP_PORT;
var boolean g_initialized := false; var boolean g_initialized := false;
var ConnectionId g_ipa_conn_id := -1; var ConnectionId g_ipa_conn_id := -1;
/* Are we a BSC/MGW (truel) or MSC (false) */
var boolean g_is_bsc_mgw;
var IpaMode g_mode; var IpaMode g_mode;
} }
@ -47,6 +57,7 @@ function f_connect(charstring remote_host, PortNumber remote_port,
res := IPA_CodecPort_CtrlFunct.f_IPL4_connect(IPA_PORT, remote_host, remote_port, res := IPA_CodecPort_CtrlFunct.f_IPL4_connect(IPA_PORT, remote_host, remote_port,
local_host, local_port, 0, { tcp:={} }); local_host, local_port, 0, { tcp:={} });
g_ipa_conn_id := res.connId; g_ipa_conn_id := res.connId;
g_is_bsc_mgw := true;
} }
function f_bind(charstring local_host, PortNumber local_port) runs on IPA_Emulation_CT { function f_bind(charstring local_host, PortNumber local_port) runs on IPA_Emulation_CT {
@ -54,6 +65,7 @@ function f_bind(charstring local_host, PortNumber local_port) runs on IPA_Emulat
res := IPA_CodecPort_CtrlFunct.f_IPL4_listen(IPA_PORT, res := IPA_CodecPort_CtrlFunct.f_IPL4_listen(IPA_PORT,
local_host, local_port, { tcp:={} }); local_host, local_port, { tcp:={} });
g_ipa_conn_id := res.connId; g_ipa_conn_id := res.connId;
g_is_bsc_mgw := false;
} }
template ASP_MTP3_TRANSFERind ts_MTP3_XFER_ind(integer opc, octetstring data) := { template ASP_MTP3_TRANSFERind ts_MTP3_XFER_ind(integer opc, octetstring data) := {
@ -103,12 +115,7 @@ private function f_ccm_make_id_resp(PDU_IPA_CCM get) return PDU_IPA_CCM {
/* transmit IPA CCM message */ /* transmit IPA CCM message */
private function f_ccm_tx(PDU_IPA_CCM ccm) runs on IPA_Emulation_CT { private function f_ccm_tx(PDU_IPA_CCM ccm) runs on IPA_Emulation_CT {
var IPA_Send ipa_tx := { var IPA_Send ipa_tx := valueof(t_IPA_Send(g_ipa_conn_id, IPAC_PROTO_CCM, enc_PDU_IPA_CCM(ccm)));
connId := g_ipa_conn_id,
streamId := IPAC_PROTO_CCM,
streamIdExt := omit,
msg := enc_PDU_IPA_CCM(ccm)
}
log("CCM Tx:", ccm); log("CCM Tx:", ccm);
IPA_PORT.send(ipa_tx); IPA_PORT.send(ipa_tx);
} }
@ -160,12 +167,8 @@ private function f_to_asp(IPA_RecvFrom ipa_rx) return ASP_IPA_Unitdata {
} }
private function f_from_asp(ConnectionId connId, ASP_IPA_Unitdata ipa_tx) return IPA_Send { private function f_from_asp(ConnectionId connId, ASP_IPA_Unitdata ipa_tx) return IPA_Send {
var IPA_Send ret := { var IPA_Send ret := valueof(t_IPA_Send(connId, ipa_tx.streamId, ipa_tx.payload,
connId := connId, ipa_tx.streamIdExt));
streamId := ipa_tx.streamId,
streamIdExt := ipa_tx.streamIdExt,
msg := ipa_tx.payload
}
return ret; return ret;
} }
@ -182,11 +185,24 @@ function main_server(charstring local_host, PortNumber local_port) runs on IPA_E
ScanEvents(); ScanEvents();
} }
private function f_mgcp_to_user(octetstring msg) runs on IPA_Emulation_CT {
var charstring msg_ch := oct2char(msg);
if (g_is_bsc_mgw) {
log("============");
log(msg_ch);
IPA_MGCP_PORT.send(dec_MgcpCommand(msg_ch));
} else {
IPA_MGCP_PORT.send(dec_MgcpResponse(msg_ch));
}
}
private function ScanEvents() runs on IPA_Emulation_CT { private function ScanEvents() runs on IPA_Emulation_CT {
var IPA_RecvFrom ipa_rx; var IPA_RecvFrom ipa_rx;
var ASP_IPA_Unitdata ipa_ud; var ASP_IPA_Unitdata ipa_ud;
var ASP_MTP3_TRANSFERreq mtp_req; var ASP_MTP3_TRANSFERreq mtp_req;
var ASP_Event asp_evt; var ASP_Event asp_evt;
var MgcpCommand mgcp_cmd;
var MgcpResponse mgcp_rsp;
while (true) { while (true) {
alt { alt {
@ -197,13 +213,21 @@ private function ScanEvents() runs on IPA_Emulation_CT {
var PDU_IPA_CCM ccm := dec_PDU_IPA_CCM(ipa_rx.msg); var PDU_IPA_CCM ccm := dec_PDU_IPA_CCM(ipa_rx.msg);
log("CCM Rx:", ccm); log("CCM Rx:", ccm);
f_ccm_rx(ccm); f_ccm_rx(ccm);
} } case (IPAC_PROTO_SCCP) {
case (IPAC_PROTO_SCCP) {
var ASP_MTP3_TRANSFERind mtp; var ASP_MTP3_TRANSFERind mtp;
mtp := valueof(ts_MTP3_XFER_ind(0, ipa_rx.msg)); mtp := valueof(ts_MTP3_XFER_ind(0, ipa_rx.msg));
MTP3_SP_PORT.send(mtp); MTP3_SP_PORT.send(mtp);
} case (IPAC_PROTO_MGCP_OLD) {
f_mgcp_to_user(ipa_rx.msg);
} case (IPAC_PROTO_OSMO) {
select (ipa_rx.streamIdExt) {
case (IPAC_PROTO_EXT_MGCP) {
f_mgcp_to_user(ipa_rx.msg);
} case else {
IPA_SP_PORT.send(f_to_asp(ipa_rx));
}
} }
case else { } case else {
IPA_SP_PORT.send(f_to_asp(ipa_rx)); IPA_SP_PORT.send(f_to_asp(ipa_rx));
} }
} }
@ -226,15 +250,31 @@ private function ScanEvents() runs on IPA_Emulation_CT {
/* Received SCCP -> down into IPA */ /* Received SCCP -> down into IPA */
[] MTP3_SP_PORT.receive(ASP_MTP3_TRANSFERreq: ?) -> value mtp_req { [] MTP3_SP_PORT.receive(ASP_MTP3_TRANSFERreq: ?) -> value mtp_req {
var IPA_Send ipa_tx := { var IPA_Send ipa_tx := valueof(t_IPA_Send(g_ipa_conn_id, IPAC_PROTO_SCCP,
connId := g_ipa_conn_id, mtp_req.data));
streamId := IPAC_PROTO_SCCP,
msg := mtp_req.data
}
IPA_PORT.send(ipa_tx); IPA_PORT.send(ipa_tx);
} }
/* Received MISC (RSL/OML/CTRL/MGCP) -> down into IPA */ /* Received MGCP -> down into IPA */
[] IPA_MGCP_PORT.receive(MgcpCommand:?) -> value mgcp_cmd {
ipa_ud := {
streamId := IPAC_PROTO_OSMO,
streamIdExt := IPAC_PROTO_EXT_MGCP,
payload := char2oct(enc_MgcpCommand(mgcp_cmd))
}
IPA_PORT.send(f_from_asp(g_ipa_conn_id, ipa_ud));
}
[] IPA_MGCP_PORT.receive(MgcpResponse:?) -> value mgcp_rsp {
ipa_ud := {
streamId := IPAC_PROTO_OSMO,
streamIdExt := IPAC_PROTO_EXT_MGCP,
payload := char2oct(enc_MgcpResponse(mgcp_rsp))
}
IPA_PORT.send(f_from_asp(g_ipa_conn_id, ipa_ud));
}
/* Received MISC (RSL/OML/CTRL) -> down into IPA */
[] IPA_SP_PORT.receive(ASP_IPA_Unitdata: ?) -> value ipa_ud { [] IPA_SP_PORT.receive(ASP_IPA_Unitdata: ?) -> value ipa_ud {
IPA_PORT.send(f_from_asp(g_ipa_conn_id, ipa_ud)); IPA_PORT.send(f_from_asp(g_ipa_conn_id, ipa_ud));
} }

View File

@ -102,6 +102,16 @@ module MGCP_Templates {
return cmd; return cmd;
} }
template MgcpResponse tr_DLCX_ACK := {
line := {
code := "200",
trans_id := ?,
string := "OK"
},
params:= *,
sdp := *
}
/* SDP Templates */ /* SDP Templates */
template SDP_Origin ts_SDP_origin(charstring addr, charstring session_id, template SDP_Origin ts_SDP_origin(charstring addr, charstring session_id,
charstring session_version := "1", charstring session_version := "1",