Harald Welte | ac35980 | 2017-04-12 12:13:44 +0200 | [diff] [blame] | 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // // |
| 3 | // Copyright Test Competence Center (TCC) ETH 2009 // |
| 4 | // // |
| 5 | // The copyright to the computer program(s) herein is the property of TCC. // |
| 6 | // The program(s) may be used and/or copied only with the written permission // |
| 7 | // of TCC or in accordance with the terms and conditions stipulated in the // |
| 8 | // agreement/contract under which the program(s) have been supplied // |
| 9 | // // |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | // |
| 12 | // File: M3UA_Emulation.ttcn |
| 13 | // Reference: M3UA Protocol Emulation |
| 14 | // Rev: R1B01 |
| 15 | // Prodnr: CNL 113 537 |
| 16 | // Updated: 2009-01-06 |
| 17 | // Contact: http://ttcn.ericsson.se |
| 18 | |
| 19 | module M3UA_Emulation |
| 20 | { |
| 21 | |
| 22 | modulepar |
| 23 | { |
| 24 | boolean tsp_logVerbose := false; |
| 25 | float tsp_Timer := 2.0; // General timer used in M3UA emulation. |
| 26 | float tsp_ASPUP_Resend_Timer := 2.0; |
| 27 | float tsp_ASPAC_Resend_Timer := 2.0; |
| 28 | float tsp_Assoc_Restart_Timer := 60.0; |
| 29 | float tsp_Heartbeat_Timer := 30.0; |
| 30 | integer tsp_SCTP_PayloadProtocolID := 3; // 3 for M3UA. |
| 31 | boolean tsp_Enable_M3UA_Heartbeat := false; // Send SCTP packets periodically. |
| 32 | boolean tsp_SCTP_Server_Mode := false; |
| 33 | boolean tsp_M3UA_Server_Mode := false; |
| 34 | } |
| 35 | |
| 36 | import from General_Types all; |
| 37 | import from M3UA_Types all; |
| 38 | import from SCTPasp_Types all; |
| 39 | import from SCTPasp_PortType all; |
| 40 | import from MTP3asp_Types all; |
| 41 | |
| 42 | type record of ASP_MTP3_TRANSFERreq TRANSFERreq_Buffer; |
| 43 | |
| 44 | type record SCTP_Association_Address |
| 45 | { |
| 46 | integer local_sctp_port, |
| 47 | charstring local_ip_addr, |
| 48 | integer remote_sctp_port, |
| 49 | charstring remote_ip_addr |
| 50 | } |
| 51 | |
| 52 | // Definition of M3UA_Entity which contains M3UA entity data. |
| 53 | type record M3UA_Entity |
| 54 | { |
| 55 | M3UA_CommStatus commStatus optional, |
| 56 | integer sCTP_Assoc_ID optional, |
| 57 | SCTP_Association_Address assoc |
| 58 | } |
| 59 | |
| 60 | // Type for status of SCTP communication for an M3UA entity. |
| 61 | type enumerated M3UA_CommStatus |
| 62 | { |
| 63 | aSP_Down_initial_State (0), |
| 64 | aSP_Down_sCTP_Initialize_Done (1), |
| 65 | aSP_Down_sCTP_Associate_done (2), |
| 66 | aSP_Down_commUP_Received (3), |
| 67 | aSP_Down_ASPUP_Sent (4), |
| 68 | aSP_Inactive (5), |
| 69 | aSP_Inact_ASPAC_Sent (6), |
| 70 | aSP_Active (7) // aSPAC_Ack_Received |
| 71 | } |
| 72 | |
| 73 | // We need an internal port to communicate with the MTP3 side. |
| 74 | // internal in name |
| 75 | type port MTP3asp_SP_PT_Int message |
| 76 | { |
| 77 | in ASP_MTP3_TRANSFERreq; |
| 78 | out ASP_MTP3_TRANSFERind; |
| 79 | // out ASP_MTP3_PAUSE; |
| 80 | // out ASP_MTP3_RESUME; |
| 81 | // out ASP_MTP3_STATUS; |
| 82 | } with { |
| 83 | extension "internal" |
| 84 | } |
| 85 | |
| 86 | // M3UA emulation component. |
| 87 | type component M3UA_CT |
| 88 | { |
| 89 | var M3UA_Entity v_Entity; |
| 90 | var TRANSFERreq_Buffer v_TRANSFERreq_Buffer := {}; |
| 91 | |
| 92 | var ASP_SCTP v_ASP_SCTP; |
| 93 | var ASP_SCTP_SEND_FAILED v_ASP_SCTP_SEND_FAILED; |
| 94 | var ASP_SCTP_RESULT v_ASP_SCTP_RESULT; |
| 95 | var ASP_SCTP_Connected v_ASP_SCTP_Connected; |
| 96 | var ASP_SCTP_ASSOC_CHANGE v_ASP_SCTP_ASSOC_CHANGE; |
| 97 | var ASP_SCTP_SHUTDOWN_EVENT v_ASP_SCTP_SHUTDOWN_EVENT; |
| 98 | |
| 99 | var PDU_M3UA v_PDU_M3UA; |
| 100 | |
| 101 | // Component timers. |
| 102 | timer T_Timer := tsp_Timer; |
| 103 | timer T_ASPUP_resend := tsp_ASPUP_Resend_Timer; |
| 104 | timer T_ASPAC_resend := tsp_ASPAC_Resend_Timer; |
| 105 | timer T_Heartbeat := tsp_Heartbeat_Timer; |
| 106 | timer T_Assoc_restart := tsp_Assoc_Restart_Timer; |
| 107 | |
| 108 | // Port declarations. |
| 109 | port MTP3asp_SP_PT_Int MTP3_SP_PORT; // Port towards MTP3/M3UA. |
| 110 | port SCTPasp_PT SCTP_PORT; // Port towards target through SCTP. |
| 111 | } |
| 112 | |
| 113 | //******************************** |
| 114 | // Start of SCTP related templates |
| 115 | //******************************** |
| 116 | template ASP_SCTP t_S_SCTP_Send |
| 117 | (in template integer pl_associationID, |
| 118 | in template integer pl_streamID, |
| 119 | in template octetstring pl_userData, |
| 120 | in template integer pl_protocolID) := |
| 121 | { |
| 122 | client_id := pl_associationID, |
| 123 | sinfo_stream := pl_streamID, |
| 124 | sinfo_ppid := pl_protocolID, |
| 125 | data := pl_userData |
| 126 | } |
| 127 | |
| 128 | template ASP_SCTP_SEND_FAILED t_ASP_SCTP_SEND_FAILED |
| 129 | (in template integer pl_streamID) := |
| 130 | { |
| 131 | client_id := pl_streamID |
| 132 | } |
| 133 | |
| 134 | template ASP_SCTP_Listen t_ASP_SCTP_Listen |
| 135 | (template charstring pl_local_hostname, |
| 136 | template integer pl_local_portnumber) := |
| 137 | { |
| 138 | local_hostname := pl_local_hostname, |
| 139 | local_portnumber := pl_local_portnumber |
| 140 | } |
| 141 | |
| 142 | template ASP_SCTP_Connected tr_ASP_SCTP_Connected |
| 143 | (template integer pl_client_id, |
| 144 | template charstring pl_local_hostname, |
| 145 | template integer pl_local_portnumber, |
| 146 | template charstring pl_peer_hostname, |
| 147 | template integer pl_peer_portnumber) := |
| 148 | { |
| 149 | client_id := pl_client_id, |
| 150 | local_hostname := pl_local_hostname, |
| 151 | local_portnumber := pl_local_portnumber, |
| 152 | peer_hostname := pl_peer_hostname, |
| 153 | peer_portnumber := pl_peer_portnumber |
| 154 | } |
| 155 | |
| 156 | template ASP_SCTP_ConnectFrom t_ASP_SCTP_ConnectFrom |
| 157 | (template charstring pl_local_hostname, |
| 158 | template integer pl_local_portnumber, |
| 159 | template charstring pl_peer_hostname, |
| 160 | template integer pl_peer_portnumber) := |
| 161 | { |
| 162 | local_hostname := pl_local_hostname, |
| 163 | local_portnumber := pl_local_portnumber, |
| 164 | peer_hostname := pl_peer_hostname, |
| 165 | peer_portnumber := pl_peer_portnumber |
| 166 | } |
| 167 | |
| 168 | template ASP_SCTP_RESULT t_ASP_SCTP_RESULT |
| 169 | (template integer pl_client_id, |
| 170 | template boolean pl_error_status, |
| 171 | template charstring pl_error_message) := |
| 172 | { |
| 173 | client_id := pl_client_id, |
| 174 | error_status := pl_error_status, |
| 175 | error_message := pl_error_message |
| 176 | } |
| 177 | |
| 178 | template ASP_SCTP_ASSOC_CHANGE tr_S_SCTP_CommunicationUp |
| 179 | (in template integer pl_associationID) := |
| 180 | { |
| 181 | client_id := pl_associationID, |
| 182 | sac_state := SCTP_COMM_UP |
| 183 | } |
| 184 | |
| 185 | template ASP_SCTP_ASSOC_CHANGE tr_S_SCTP_CommunicationLost |
| 186 | (in template integer pl_associationID) := |
| 187 | { |
| 188 | client_id := pl_associationID, |
| 189 | sac_state := SCTP_COMM_LOST |
| 190 | } |
| 191 | |
| 192 | template ASP_SCTP_ASSOC_CHANGE tr_S_SCTP_ShutdownComplete |
| 193 | (in template integer pl_associationID) := |
| 194 | { |
| 195 | client_id := pl_associationID, |
| 196 | sac_state := SCTP_SHUTDOWN_COMP |
| 197 | } |
| 198 | |
| 199 | template ASP_SCTP_SHUTDOWN_EVENT tr_S_SCTP_ShutdownEvent |
| 200 | (in template integer pl_associationID) := |
| 201 | { |
| 202 | client_id := pl_associationID |
| 203 | } |
| 204 | |
| 205 | template ASP_SCTP_ASSOC_CHANGE tr_S_SCTP_Restart |
| 206 | (in template integer pl_associationID) := |
| 207 | { |
| 208 | client_id := pl_associationID, |
| 209 | sac_state := SCTP_RESTART |
| 210 | } |
| 211 | |
| 212 | template ASP_SCTP_ASSOC_CHANGE tr_S_SCTP_CANT_STR_ASSOC |
| 213 | (in template integer pl_associationID) := |
| 214 | { |
| 215 | client_id := pl_associationID, |
| 216 | sac_state := SCTP_CANT_STR_ASSOC |
| 217 | } |
| 218 | |
| 219 | template ASP_SCTP tr_S_SCTP_DataArrive |
| 220 | (in template integer pl_associationID, |
| 221 | in template integer pl_streamID, |
| 222 | in template integer pl_protocolID, |
| 223 | in template PDU_SCTP pl_data) := |
| 224 | { |
| 225 | client_id := pl_associationID, |
| 226 | sinfo_stream := pl_streamID, |
| 227 | sinfo_ppid := pl_protocolID, |
| 228 | data := pl_data |
| 229 | } |
| 230 | |
| 231 | template ASP_SCTP_Close t_ASP_SCTP_Close |
| 232 | (in template integer pl_associationID) := |
| 233 | { |
| 234 | client_id := pl_associationID |
| 235 | } |
| 236 | //****************************** |
| 237 | // End of SCTP related templates |
| 238 | //****************************** |
| 239 | |
| 240 | //***************************** |
| 241 | // Start of M3UA PDU templates. |
| 242 | //***************************** |
| 243 | template PDU_M3UA t_PDU_M3UA_ASPUP |
| 244 | (in template M3UA_ASP_Identifier pl_aSP_Identifier, |
| 245 | in template M3UA_Info_String pl_info_String) := |
| 246 | { |
| 247 | m3UA_ASPUP := { |
| 248 | version := '01'O, |
| 249 | reserved := '00'O, |
| 250 | messageClassAndType := '0301'O, |
| 251 | messageLength := 0, |
| 252 | messageParameters := { |
| 253 | aSP_Identifier := pl_aSP_Identifier, |
| 254 | info_String := pl_info_String |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | template PDU_M3UA t_PDU_M3UA_ASPUP_Ack := |
| 260 | { |
| 261 | m3UA_ASPUP_Ack := { |
| 262 | version := '01'O, |
| 263 | reserved := '00'O, |
| 264 | messageClassAndType := '0304'O, |
| 265 | messageLength := 0, |
| 266 | messageParameters := { |
| 267 | info_String := omit |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | template PDU_M3UA t_PDU_M3UA_ASPDN := |
| 273 | { |
| 274 | m3UA_ASPDN := { |
| 275 | version := '01'O, |
| 276 | reserved := '00'O, |
| 277 | messageClassAndType := '0302'O, |
| 278 | messageLength := 0, |
| 279 | messageParameters := { |
| 280 | info_String := omit |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | template PDU_M3UA t_PDU_M3UA_ASPDN_Ack := |
| 286 | { |
| 287 | m3UA_ASPDN_Ack := { |
| 288 | version := '01'O, |
| 289 | reserved := '00'O, |
| 290 | messageClassAndType := '0305'O, |
| 291 | messageLength := 0, |
| 292 | messageParameters := { |
| 293 | info_String := omit |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | template PDU_M3UA t_PDU_M3UA_ASPAC |
| 299 | (in template M3UA_Traffic_Mode_Type pl_traffic_Mode_Type, |
| 300 | in template M3UA_Routing_Context pl_routing_Context, |
| 301 | in template M3UA_Info_String pl_info_String) := |
| 302 | { |
| 303 | m3UA_ASPAC := { |
| 304 | version := '01'O, |
| 305 | reserved := '00'O, |
| 306 | messageClassAndType := '0401'O, |
| 307 | messageLength := 0, |
| 308 | messageParameters := { |
| 309 | traffic_Mode_Type := pl_traffic_Mode_Type, |
| 310 | routing_Context := pl_routing_Context, |
| 311 | info_String := pl_info_String |
| 312 | } |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | template PDU_M3UA t_PDU_M3UA_ASPAC_Ack |
| 317 | (in template M3UA_Traffic_Mode_Type pl_traffic_mode_type, |
| 318 | in template M3UA_Routing_Context pl_routing_Context) := |
| 319 | { |
| 320 | m3UA_ASPAC_Ack := { |
| 321 | version := '01'O, |
| 322 | reserved := '00'O, |
| 323 | messageClassAndType := '0403'O, |
| 324 | messageLength := 0, |
| 325 | messageParameters := { |
| 326 | traffic_Mode_Type := pl_traffic_mode_type, |
| 327 | routing_Context := pl_routing_Context, |
| 328 | info_String := omit |
| 329 | } |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | template PDU_M3UA t_PDU_M3UA_ASPIA |
| 334 | (in template M3UA_Routing_Context pl_routing_Context, |
| 335 | in template M3UA_Info_String pl_info_String) := |
| 336 | { |
| 337 | m3UA_ASPIA := { |
| 338 | version := '01'O, |
| 339 | reserved := '00'O, |
| 340 | messageClassAndType := '0402'O, |
| 341 | messageLength := 0, |
| 342 | messageParameters := { |
| 343 | routing_Context := pl_routing_Context, |
| 344 | info_String := pl_info_String |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | template PDU_M3UA t_PDU_M3UA_ASPIA_Ack |
| 350 | (in template M3UA_Routing_Context pl_routing_Context) := |
| 351 | { |
| 352 | m3UA_ASPIA_Ack := { |
| 353 | version := '01'O, |
| 354 | reserved := '00'O, |
| 355 | messageClassAndType := '0404'O, |
| 356 | messageLength := 0, |
| 357 | messageParameters := { |
| 358 | routing_Context := pl_routing_Context, |
| 359 | info_String := omit |
| 360 | } |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | template PDU_M3UA t_PDU_M3UA_Heartbeat |
| 365 | (in template M3UA_Heartbeat_Data pl_heartbeat_Data) := |
| 366 | { |
| 367 | m3UA_BEAT := { |
| 368 | version := '01'O, |
| 369 | reserved := '00'O, |
| 370 | messageClassAndType := '0303'O, |
| 371 | messageLength := 0, |
| 372 | messageParameters := { |
| 373 | heartbeat_Data := pl_heartbeat_Data |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | template PDU_M3UA t_PDU_M3UA_Beat_Ack |
| 379 | (in template M3UA_Heartbeat_Data pl_heartbeat_Data) := |
| 380 | { |
| 381 | m3UA_BEAT_Ack := { |
| 382 | version := '01'O, |
| 383 | reserved := '00'O, |
| 384 | messageClassAndType := '0306'O, |
| 385 | messageLength := 0, |
| 386 | messageParameters := { |
| 387 | heartbeat_Data := pl_heartbeat_Data |
| 388 | } |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | template PDU_M3UA t_PDU_M3UA_DATA |
| 393 | (in template M3UA_Network_Appearance pl_network_Appearance, |
| 394 | in template M3UA_Routing_Context pl_routing_Context, |
| 395 | in template M3UA_Protocol_Data pl_protocol_Data, |
| 396 | in template M3UA_Correlation_ID pl_correlation_ID) := |
| 397 | { |
| 398 | m3UA_DATA := { |
| 399 | version := '01'O, |
| 400 | reserved := '00'O, |
| 401 | messageClassAndType := '0101'O, |
| 402 | messageLength := 0, |
| 403 | messageParameters := { |
| 404 | network_Appearance := pl_network_Appearance, |
| 405 | routing_Context := pl_routing_Context, |
| 406 | protocol_Data := pl_protocol_Data, |
| 407 | correlation_ID := pl_correlation_ID |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | template PDU_M3UA t_PDU_M3UA_DAVA |
| 413 | (in template M3UA_Network_Appearance pl_network_Appearance, |
| 414 | in template M3UA_Routing_Context pl_routing_Context, |
| 415 | in template M3UA_Affected_Point_Codes pl_affected_Point_Codes, |
| 416 | in template M3UA_Info_String pl_info_String) := |
| 417 | { |
| 418 | m3UA_DAVA := { |
| 419 | version := '01'O, |
| 420 | reserved := '00'O, |
| 421 | messageClassAndType := '0202'O, |
| 422 | messageLength := 0, |
| 423 | messageParameters := { |
| 424 | network_Appearance := pl_network_Appearance, |
| 425 | routing_Context := pl_routing_Context, |
| 426 | affected_Point_Codes := pl_affected_Point_Codes, |
| 427 | info_String := pl_info_String |
| 428 | } |
| 429 | } |
| 430 | } |
| 431 | //************************** |
| 432 | // End of M3UA PDU templates |
| 433 | //************************** |
| 434 | |
| 435 | //********************************** |
| 436 | // Start of M3UA parameter templates |
| 437 | //********************************** |
| 438 | template M3UA_Protocol_Data t_M3UA_Protocol_Data |
| 439 | (template OCT4 pl_oPC, |
| 440 | template OCT4 pl_dPC, |
| 441 | template OCT1 pl_sI, |
| 442 | template OCT1 pl_nI, |
| 443 | template OCT1 pl_mP, |
| 444 | template OCT1 pl_sLS, |
| 445 | template octetstring pl_userProtocolData) := |
| 446 | { |
| 447 | tag := '0210'O, |
| 448 | lengthInd := 0, |
| 449 | oPC := pl_oPC, |
| 450 | dPC := pl_dPC, |
| 451 | sI := pl_sI, |
| 452 | nI := pl_nI, |
| 453 | mP := pl_mP, |
| 454 | sLS := pl_sLS, |
| 455 | userProtocolData := pl_userProtocolData |
| 456 | } |
| 457 | //******************************** |
| 458 | // End of M3UA parameter templates |
| 459 | //******************************** |
| 460 | |
| 461 | //*********************************** |
| 462 | // Dynamic part of the M3UA emulation |
| 463 | //*********************************** |
| 464 | |
| 465 | function f_M3UA_Emulation(SCTP_Association_Address pl_Boot) runs on M3UA_CT |
| 466 | { |
| 467 | // Initialize parameters from the test case. |
| 468 | v_Entity.assoc := pl_Boot; |
| 469 | v_Entity.commStatus := aSP_Down_initial_State; |
| 470 | |
| 471 | // At this point, we assume that the ports are already connected and mapped |
| 472 | // properly by the user. |
| 473 | log("*************************************************"); |
| 474 | log("M3UA emulation initiated, the test can be started"); |
| 475 | log("*************************************************"); |
| 476 | |
| 477 | f_Initialize_SCTP(); |
| 478 | |
| 479 | // Start the main function in an infinte loop. |
| 480 | f_M3UA_ScanEvents(); |
| 481 | } |
| 482 | |
| 483 | // Initialize the SCTP layer with parameters read from the configuration file. |
| 484 | // We have only a single association. |
| 485 | function f_Initialize_SCTP() runs on M3UA_CT |
| 486 | { |
| 487 | v_Entity.commStatus := aSP_Down_sCTP_Initialize_Done; |
| 488 | if (tsp_SCTP_Server_Mode) { |
| 489 | // Send out a LISTEN message. The communication status doesn't change |
| 490 | // here. |
| 491 | SCTP_PORT.send |
| 492 | (t_ASP_SCTP_Listen(v_Entity.assoc.local_ip_addr, |
| 493 | v_Entity.assoc.local_sctp_port)); |
| 494 | } |
| 495 | else { |
| 496 | // Send ConnectFrom sequentially, wait for RESULT messages. |
| 497 | f_Associate(); |
| 498 | T_Assoc_restart.start; |
| 499 | } |
| 500 | |
| 501 | if (tsp_SCTP_PayloadProtocolID == 3) { |
| 502 | if (not tsp_M3UA_Server_Mode) { |
| 503 | T_ASPUP_resend.start; |
| 504 | T_ASPAC_resend.start; |
| 505 | } |
| 506 | if (tsp_Enable_M3UA_Heartbeat) { |
| 507 | T_Heartbeat.start; |
| 508 | } |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | // Associate SCTP connection for a M3UA entity. |
| 513 | function f_Associate() runs on M3UA_CT |
| 514 | { |
| 515 | SCTP_PORT.send(t_ASP_SCTP_ConnectFrom |
| 516 | (v_Entity.assoc.local_ip_addr, |
| 517 | v_Entity.assoc.local_sctp_port, |
| 518 | v_Entity.assoc.remote_ip_addr, |
| 519 | v_Entity.assoc.remote_sctp_port)); |
| 520 | |
| 521 | T_Timer.start; |
| 522 | alt { |
| 523 | [] SCTP_PORT.receive(t_ASP_SCTP_RESULT(*, ?, *)) -> value v_ASP_SCTP_RESULT { |
| 524 | if (v_ASP_SCTP_RESULT.error_status) { |
| 525 | log("Connect failed: ", v_ASP_SCTP_RESULT.error_message); |
| 526 | } |
| 527 | else { |
| 528 | v_Entity.sCTP_Assoc_ID := v_ASP_SCTP_RESULT.client_id; |
| 529 | v_Entity.commStatus := aSP_Down_sCTP_Associate_done; |
| 530 | log("SCTP_ConnectResult -> connection established from: ", |
| 531 | v_Entity.assoc.local_ip_addr, ":", v_Entity.assoc.local_sctp_port, |
| 532 | " to server: ", v_Entity.assoc.remote_ip_addr, ":", |
| 533 | v_Entity.assoc.remote_sctp_port, " association #", |
| 534 | v_Entity.sCTP_Assoc_ID); |
| 535 | if (tsp_logVerbose) { |
| 536 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to ", |
| 537 | v_Entity.commStatus); |
| 538 | } |
| 539 | } |
| 540 | T_Timer.stop; |
| 541 | } |
| 542 | [] T_Timer.timeout { |
| 543 | log("----------------------------------------------"); |
| 544 | log("No response received to t_ASP_SCTP_ConnectFrom"); |
| 545 | log("----------------------------------------------"); |
| 546 | setverdict(fail); |
| 547 | // mtc.stop; |
| 548 | } |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | // Starts M3UA emulation execution. |
| 553 | function f_M3UA_ScanEvents() runs on M3UA_CT |
| 554 | { |
| 555 | var ASP_MTP3_TRANSFERreq vl_ASP_MTP3_TRANSFERreq; |
| 556 | |
| 557 | alt { |
| 558 | [] MTP3_SP_PORT.receive(ASP_MTP3_TRANSFERreq : ?) |
| 559 | -> value vl_ASP_MTP3_TRANSFERreq { |
| 560 | f_Send_MTP3_TRANSFERreq(vl_ASP_MTP3_TRANSFERreq); |
| 561 | repeat; |
| 562 | } |
| 563 | [] as_SCTP_CommunicationUp() |
| 564 | [] as_SCTP_DataArrive() |
| 565 | [] as_SCTP_Connected() |
| 566 | [] as_Unexpected_SCTP_Events() |
| 567 | [] as_handleM3UA_timers() |
| 568 | [] as_handleSCTP_timers() |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | function f_Send_MTP3_TRANSFERreq(ASP_MTP3_TRANSFERreq pl_ASP_MTP3_TRANSFERreq) |
| 573 | runs on M3UA_CT |
| 574 | { |
| 575 | if (v_Entity.commStatus == aSP_Active) { |
| 576 | if (tsp_SCTP_PayloadProtocolID == 3) { // M3UA |
| 577 | SCTP_PORT.send |
| 578 | (t_S_SCTP_Send |
| 579 | (v_Entity.sCTP_Assoc_ID, |
| 580 | 1, |
| 581 | enc_PDU_M3UA |
| 582 | (valueof |
| 583 | (t_PDU_M3UA_DATA |
| 584 | (omit, |
| 585 | omit, |
| 586 | t_M3UA_Protocol_Data |
| 587 | (int2oct(pl_ASP_MTP3_TRANSFERreq.opc, 4), // OPC |
| 588 | int2oct(pl_ASP_MTP3_TRANSFERreq.dpc, 4), // DPC |
| 589 | bit2oct('0000'B & pl_ASP_MTP3_TRANSFERreq.sio.si), // SIO |
| 590 | bit2oct('000000'B & pl_ASP_MTP3_TRANSFERreq.sio.ni), |
| 591 | bit2oct('000000'B & pl_ASP_MTP3_TRANSFERreq.sio.prio), |
| 592 | int2oct(pl_ASP_MTP3_TRANSFERreq.sls, 1), // SLS |
| 593 | pl_ASP_MTP3_TRANSFERreq.data), |
| 594 | omit))), |
| 595 | tsp_SCTP_PayloadProtocolID)); |
| 596 | } |
| 597 | else { // Non-M3UA |
| 598 | SCTP_PORT.send |
| 599 | (t_S_SCTP_Send |
| 600 | (v_Entity.sCTP_Assoc_ID, |
| 601 | 1, |
| 602 | pl_ASP_MTP3_TRANSFERreq.data, |
| 603 | tsp_SCTP_PayloadProtocolID)); |
| 604 | } |
| 605 | if (tsp_logVerbose) { |
| 606 | log("MTP3_SP_PORT: ASP_MTP3_TRANSFERreq received -> message sent " & |
| 607 | "via SCTP"); |
| 608 | } |
| 609 | } |
| 610 | else { |
| 611 | // If the SCTP association is not yet running, we have to buffer the data |
| 612 | // messages arrived from the MTP3 side. Sending of buffered data messages |
| 613 | // should occure when the SCTP association is up and before sending the |
| 614 | // data message in reply for a new ASP_MTP3_TRANSFERreq data message. The |
| 615 | // buffer should be checked before sending. |
| 616 | v_TRANSFERreq_Buffer[sizeof(v_TRANSFERreq_Buffer)] := |
| 617 | pl_ASP_MTP3_TRANSFERreq; |
| 618 | if (tsp_logVerbose) { |
| 619 | log("MTP3_SP_PORT: ASP_MTP3_TRANSFERreq received in an inactive state " & |
| 620 | "-> message was buffered"); |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | // Handle communication up messages of users which performed associate earlier. |
| 626 | // We have only one association. |
| 627 | altstep as_SCTP_CommunicationUp() runs on M3UA_CT |
| 628 | { |
| 629 | [] SCTP_PORT.receive(tr_S_SCTP_CommunicationUp(?)) |
| 630 | -> value v_ASP_SCTP_ASSOC_CHANGE { |
| 631 | if (v_Entity.sCTP_Assoc_ID == v_ASP_SCTP_ASSOC_CHANGE.client_id) { |
| 632 | if (v_Entity.commStatus == aSP_Down_sCTP_Associate_done) { |
| 633 | v_Entity.commStatus := aSP_Down_commUP_Received; |
| 634 | if (tsp_SCTP_PayloadProtocolID != 3) { // Non-M3UA |
| 635 | v_Entity.commStatus := aSP_Active; |
| 636 | var integer v_i; |
| 637 | for (v_i := 0; v_i < sizeof(v_TRANSFERreq_Buffer); v_i := v_i + 1) { |
| 638 | log("Sending buffered message #", v_i); |
| 639 | f_Send_MTP3_TRANSFERreq(v_TRANSFERreq_Buffer[v_i]); |
| 640 | } |
| 641 | v_TRANSFERreq_Buffer := {}; |
| 642 | // MTP3_SP_PORT.send(ASP_MTP3_RESUME : {}); |
| 643 | } |
| 644 | if (tsp_logVerbose) { |
| 645 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 646 | v_Entity.commStatus); |
| 647 | } |
| 648 | if ((not tsp_M3UA_Server_Mode) and |
| 649 | (tsp_SCTP_PayloadProtocolID == 3)) { // M3UA |
| 650 | f_ASPUP_Sending(); |
| 651 | } |
| 652 | } |
| 653 | else { |
| 654 | if (tsp_logVerbose) { |
| 655 | log("SCTP_CommunicationUp received in wrong state (i.e. not after " & |
| 656 | "SCTP_Associate is done) in state: ", v_Entity.commStatus); |
| 657 | } |
| 658 | } |
| 659 | } |
| 660 | else { |
| 661 | if (tsp_logVerbose) { |
| 662 | log("Association does not exists, received in CommunicationUp"); |
| 663 | } |
| 664 | } |
| 665 | repeat; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | // This altstep handles the data received from SCTP. |
| 670 | altstep as_SCTP_DataArrive() runs on M3UA_CT |
| 671 | { |
| 672 | [] SCTP_PORT.receive(tr_S_SCTP_DataArrive |
| 673 | (?, // associationID |
| 674 | ?, // streamID |
| 675 | ?, // protocolID |
| 676 | ? // data |
| 677 | )) -> value v_ASP_SCTP { |
| 678 | // Checking the identifier for the association is not necessary, because we |
| 679 | // have only only one association. |
| 680 | if (f_Assoc_Exists(v_ASP_SCTP.client_id)) { |
| 681 | if (tsp_logVerbose) { |
| 682 | log("Message received on association #", v_Entity.sCTP_Assoc_ID); |
| 683 | } |
| 684 | if (tsp_SCTP_PayloadProtocolID == 3) { // M3UA |
| 685 | v_PDU_M3UA := dec_PDU_M3UA(v_ASP_SCTP.data); |
| 686 | f_handle_M3UA_msg(v_PDU_M3UA); |
| 687 | } |
| 688 | else { // Non-M3UA |
| 689 | f_handle_nonM3UA_msg(v_ASP_SCTP.data); |
| 690 | } |
| 691 | } |
| 692 | else{ |
| 693 | log("Message received on unknown association #", v_Entity.sCTP_Assoc_ID, |
| 694 | " -> closing connection"); |
| 695 | SCTP_PORT.send(t_ASP_SCTP_Close(v_Entity.sCTP_Assoc_ID)); |
| 696 | log("SCTP connection closed"); |
| 697 | } |
| 698 | repeat; |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | // Handle the SCTP connected messages. It is sent from the SCTP side and it |
| 703 | // signals, that we're on the right track to create the association. This is |
| 704 | // for server mode. |
| 705 | altstep as_SCTP_Connected() runs on M3UA_CT |
| 706 | { |
| 707 | [tsp_SCTP_Server_Mode] SCTP_PORT.receive(tr_ASP_SCTP_Connected(?, ?, ?, ?, ?)) |
| 708 | -> value v_ASP_SCTP_Connected { |
| 709 | // Message from the configured endpoint. |
| 710 | if ((v_ASP_SCTP_Connected.local_portnumber == |
| 711 | v_Entity.assoc.local_sctp_port) and |
| 712 | (v_ASP_SCTP_Connected.local_hostname == |
| 713 | v_Entity.assoc.local_ip_addr) and |
| 714 | (v_ASP_SCTP_Connected.peer_portnumber == |
| 715 | v_Entity.assoc.remote_sctp_port) and |
| 716 | (v_ASP_SCTP_Connected.peer_hostname == |
| 717 | v_Entity.assoc.remote_ip_addr)) { |
| 718 | v_Entity.sCTP_Assoc_ID := v_ASP_SCTP_Connected.client_id; |
| 719 | v_Entity.commStatus := aSP_Down_sCTP_Associate_done; |
| 720 | log("ASP_SCTP_Connected -> accepted connection from client: ", |
| 721 | v_ASP_SCTP_Connected.peer_hostname, ":", |
| 722 | v_ASP_SCTP_Connected.peer_portnumber, " on server: ", |
| 723 | v_ASP_SCTP_Connected.local_hostname, ":", |
| 724 | v_ASP_SCTP_Connected.local_portnumber, " with association #", |
| 725 | v_Entity.sCTP_Assoc_ID); |
| 726 | } |
| 727 | else { |
| 728 | log("ASP_SCTP_Connected -> connection from unknown client: ", |
| 729 | v_ASP_SCTP_Connected.peer_hostname, ":", |
| 730 | v_ASP_SCTP_Connected.peer_portnumber); |
| 731 | } |
| 732 | repeat; |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | // Handle error messages of users. |
| 737 | altstep as_Unexpected_SCTP_Events() runs on M3UA_CT |
| 738 | { |
| 739 | // Handle communications lost message. State of user with given index jumps |
| 740 | // back to initial state and stays there. That user will not be able to |
| 741 | // communicate anymore. |
| 742 | [] SCTP_PORT.receive(tr_S_SCTP_CommunicationLost(?)) |
| 743 | -> value v_ASP_SCTP_ASSOC_CHANGE { |
| 744 | if (f_Assoc_Exists(v_ASP_SCTP_ASSOC_CHANGE.client_id)) { |
| 745 | if (v_Entity.commStatus == aSP_Active) { |
| 746 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 747 | } |
| 748 | v_Entity.commStatus := aSP_Down_sCTP_Initialize_Done; |
| 749 | v_Entity.sCTP_Assoc_ID := omit; |
| 750 | if (tsp_logVerbose) { |
| 751 | log("SCTP_CommunicationLost received"); |
| 752 | log("Association #", v_Entity.sCTP_Assoc_ID, " cleared, state " & |
| 753 | "changed to: ", v_Entity.commStatus); |
| 754 | } |
| 755 | } |
| 756 | else { |
| 757 | if (tsp_logVerbose) { |
| 758 | log("Association does not exist, received in CommunicationLost"); |
| 759 | } |
| 760 | } |
| 761 | repeat; |
| 762 | } |
| 763 | [] SCTP_PORT.receive(tr_S_SCTP_ShutdownComplete(?)) |
| 764 | -> value v_ASP_SCTP_ASSOC_CHANGE { |
| 765 | if (f_Assoc_Exists(v_ASP_SCTP_ASSOC_CHANGE.client_id)) { |
| 766 | if (v_Entity.commStatus == aSP_Active) { |
| 767 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 768 | } |
| 769 | v_Entity.commStatus := aSP_Down_sCTP_Initialize_Done; |
| 770 | if (tsp_logVerbose) { |
| 771 | log("SCTP_ShutdownComplete received"); |
| 772 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 773 | v_Entity.commStatus); |
| 774 | } |
| 775 | } |
| 776 | else { |
| 777 | if (tsp_logVerbose) { |
| 778 | log("Association does not exist, received in ShutdownComplete"); |
| 779 | } |
| 780 | } |
| 781 | repeat; |
| 782 | } |
| 783 | [] SCTP_PORT.receive(tr_S_SCTP_ShutdownEvent(?)) |
| 784 | -> value v_ASP_SCTP_SHUTDOWN_EVENT { |
| 785 | if (f_Assoc_Exists(v_ASP_SCTP_SHUTDOWN_EVENT.client_id)) { |
| 786 | if (v_Entity.commStatus == aSP_Active) { |
| 787 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 788 | } |
| 789 | v_Entity.commStatus := aSP_Down_sCTP_Initialize_Done; |
| 790 | if (tsp_logVerbose) { |
| 791 | log("SCTP_ShutdownEvent received"); |
| 792 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 793 | v_Entity.commStatus); |
| 794 | } |
| 795 | } |
| 796 | else { |
| 797 | if (tsp_logVerbose) { |
| 798 | log("Association does not exist, received in ShutdownEvent"); |
| 799 | } |
| 800 | } |
| 801 | repeat; |
| 802 | } |
| 803 | [] SCTP_PORT.receive(tr_ASP_SCTP_Connected(?, ?, ?, ?, ?)) |
| 804 | -> value v_ASP_SCTP_Connected { |
| 805 | log("Unexpected ASP_SCTP_Connected"); |
| 806 | repeat; |
| 807 | } |
| 808 | [] SCTP_PORT.receive(tr_S_SCTP_Restart(?)) -> value v_ASP_SCTP_ASSOC_CHANGE { |
| 809 | if (f_Assoc_Exists(v_ASP_SCTP_ASSOC_CHANGE.client_id)) { |
| 810 | log("SCTP_Restart received"); |
| 811 | v_Entity.commStatus := aSP_Down_commUP_Received; |
| 812 | if (tsp_logVerbose) { |
| 813 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 814 | v_Entity.commStatus); |
| 815 | } |
| 816 | } |
| 817 | else { |
| 818 | if (tsp_logVerbose) { |
| 819 | log("Association does not exist, received in SCTP_Restart"); |
| 820 | } |
| 821 | } |
| 822 | repeat; |
| 823 | } |
| 824 | [] SCTP_PORT.receive(t_ASP_SCTP_SEND_FAILED(?)) |
| 825 | -> value v_ASP_SCTP_SEND_FAILED { |
| 826 | log("SCTP_Send failed for association #", v_Entity.sCTP_Assoc_ID); |
| 827 | if (f_Assoc_Exists(v_ASP_SCTP_SEND_FAILED.client_id)) { |
| 828 | // Daemon sends an error status message here. |
| 829 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 830 | } |
| 831 | else { |
| 832 | log("Send error received for association that doesn't exist"); |
| 833 | } |
| 834 | repeat; |
| 835 | } |
| 836 | [] SCTP_PORT.receive(tr_S_SCTP_CANT_STR_ASSOC(?)) { |
| 837 | repeat; |
| 838 | } |
| 839 | [] SCTP_PORT.receive { |
| 840 | repeat; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | // After reception of SCTP_CommunicationUp M3UA ASPUP/ASPAC is resent by the |
| 845 | // entity if it didn't receive ASPUP_Ack/ASPAC_Ack. |
| 846 | altstep as_handleM3UA_timers() runs on M3UA_CT |
| 847 | { |
| 848 | [] T_ASPUP_resend.timeout { |
| 849 | if ((v_Entity.commStatus == aSP_Down_commUP_Received) or |
| 850 | (v_Entity.commStatus == aSP_Down_ASPUP_Sent)) { |
| 851 | // Try to send ASPUP again. |
| 852 | SCTP_PORT.send |
| 853 | (t_S_SCTP_Send |
| 854 | (v_Entity.sCTP_Assoc_ID, |
| 855 | 0, |
| 856 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPUP(omit, omit))), |
| 857 | tsp_SCTP_PayloadProtocolID)); |
| 858 | v_Entity.commStatus := aSP_Down_ASPUP_Sent; |
| 859 | if (tsp_logVerbose) { |
| 860 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 861 | v_Entity.commStatus); |
| 862 | } |
| 863 | } |
| 864 | T_ASPUP_resend.start; |
| 865 | repeat; |
| 866 | } |
| 867 | |
| 868 | [] T_ASPAC_resend.timeout { |
| 869 | if ((v_Entity.commStatus == aSP_Inactive) or |
| 870 | (v_Entity.commStatus == aSP_Inact_ASPAC_Sent)) { |
| 871 | SCTP_PORT.send |
| 872 | (t_S_SCTP_Send |
| 873 | (v_Entity.sCTP_Assoc_ID, |
| 874 | 0, |
| 875 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPAC(omit, omit, omit))), |
| 876 | tsp_SCTP_PayloadProtocolID)); |
| 877 | v_Entity.commStatus := aSP_Inact_ASPAC_Sent; |
| 878 | if (tsp_logVerbose) { |
| 879 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 880 | v_Entity.commStatus); |
| 881 | } |
| 882 | } |
| 883 | T_ASPAC_resend.start; |
| 884 | repeat; |
| 885 | } |
| 886 | |
| 887 | [tsp_Enable_M3UA_Heartbeat] T_Heartbeat.timeout { |
| 888 | if (v_Entity.commStatus == aSP_Active) { |
| 889 | SCTP_PORT.send |
| 890 | (t_S_SCTP_Send |
| 891 | (v_Entity.sCTP_Assoc_ID, |
| 892 | 0, |
| 893 | enc_PDU_M3UA(valueof(t_PDU_M3UA_Heartbeat(omit))), |
| 894 | tsp_SCTP_PayloadProtocolID)); |
| 895 | if (tsp_logVerbose) { |
| 896 | log("Heartbeat sent to association #", v_Entity.sCTP_Assoc_ID); |
| 897 | } |
| 898 | } |
| 899 | T_Heartbeat.start; |
| 900 | repeat; |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | // Handles SCTP timer events. In server mode we don't associate. |
| 905 | altstep as_handleSCTP_timers() runs on M3UA_CT |
| 906 | { |
| 907 | [not tsp_SCTP_Server_Mode] T_Assoc_restart.timeout { |
| 908 | if (v_Entity.commStatus == aSP_Down_sCTP_Initialize_Done) { |
| 909 | f_Associate(); |
| 910 | } |
| 911 | T_Assoc_restart.start; |
| 912 | repeat; |
| 913 | } |
| 914 | } |
| 915 | |
| 916 | // After reception of SCTP CommunicationUp messages M3UA ASPUP is sent by |
| 917 | // every entity and the M3UA ASPUP_Ack is received by every entity. |
| 918 | function f_ASPUP_Sending() runs on M3UA_CT |
| 919 | { |
| 920 | SCTP_PORT.send |
| 921 | (t_S_SCTP_Send |
| 922 | (v_Entity.sCTP_Assoc_ID, |
| 923 | 0, // streamID |
| 924 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPUP(omit, omit))), |
| 925 | tsp_SCTP_PayloadProtocolID)); |
| 926 | v_Entity.commStatus := aSP_Down_ASPUP_Sent; |
| 927 | if (tsp_logVerbose) { |
| 928 | log("M3UA_ASPUP sent"); |
| 929 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 930 | v_Entity.commStatus); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | |
| 935 | // Test if an association with assocID exists or not. We have only one |
| 936 | // association at the moment, we just check if the given assocID is the same, |
| 937 | // that is associated with our single entity. If we would have more entities |
| 938 | // in a table, the index of it should be returned instead of a boolean value. |
| 939 | function f_Assoc_Exists(integer pl_assocID) runs on M3UA_CT return boolean |
| 940 | { |
| 941 | if (v_Entity.sCTP_Assoc_ID == pl_assocID) { |
| 942 | return true; |
| 943 | } |
| 944 | else { |
| 945 | if (tsp_logVerbose) { |
| 946 | log("Association #", v_Entity.sCTP_Assoc_ID, " not found"); |
| 947 | } |
| 948 | } |
| 949 | return false; |
| 950 | } |
| 951 | |
| 952 | function f_handle_M3UA_msg(PDU_M3UA pl_PDU_M3UA) runs on M3UA_CT |
| 953 | { |
| 954 | if (ischosen(pl_PDU_M3UA.m3UA_DATA)) { |
| 955 | if (v_Entity.commStatus == aSP_Active) { |
| 956 | // Send ASP_MTP3_TRANSFERind message. |
| 957 | MTP3_SP_PORT.send |
| 958 | (valueof |
| 959 | (tr_ASP_MTP3_TRANSFERind_sio |
| 960 | (substr(oct2bit(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.nI), 6, 2), |
| 961 | substr(oct2bit(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.mP), 6, 2), |
| 962 | substr(oct2bit(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.sI), 4, 4), |
| 963 | oct2int(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.oPC), |
| 964 | oct2int(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.dPC), |
| 965 | oct2int(pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.sLS), |
| 966 | pl_PDU_M3UA.m3UA_DATA.messageParameters.protocol_Data.userProtocolData))); |
| 967 | if (tsp_logVerbose) { |
| 968 | log("MTP3_SP_PORT: Data received -> TRANSFERind sent"); |
| 969 | } |
| 970 | } |
| 971 | else { |
| 972 | // Buffering indication messages? |
| 973 | if (tsp_logVerbose) { |
| 974 | log("MTP3_SP_PORT: Data received, no user connected -> discard"); |
| 975 | } |
| 976 | } |
| 977 | } |
| 978 | else if (ischosen(pl_PDU_M3UA.m3UA_BEAT)) { |
| 979 | if (v_Entity.commStatus == aSP_Active) { |
| 980 | SCTP_PORT.send |
| 981 | (t_S_SCTP_Send |
| 982 | (v_Entity.sCTP_Assoc_ID, |
| 983 | 0, |
| 984 | enc_PDU_M3UA |
| 985 | (valueof |
| 986 | (t_PDU_M3UA_Beat_Ack |
| 987 | (pl_PDU_M3UA.m3UA_BEAT.messageParameters.heartbeat_Data))), |
| 988 | tsp_SCTP_PayloadProtocolID)); |
| 989 | if (tsp_logVerbose) { |
| 990 | log("M3UA_BEAT received -> M3UA_BEAT_Ack sent"); |
| 991 | } |
| 992 | } |
| 993 | else { |
| 994 | if (tsp_logVerbose) { |
| 995 | log("M3UA_BEAT received in wrong state"); |
| 996 | } |
| 997 | } |
| 998 | } |
| 999 | else if (ischosen(pl_PDU_M3UA.m3UA_BEAT_Ack)) { |
| 1000 | if (tsp_logVerbose) { |
| 1001 | log("Received M3UA_BEAT_Ack -> discard"); |
| 1002 | } |
| 1003 | } |
| 1004 | else if (ischosen(pl_PDU_M3UA.m3UA_ERR)) { |
| 1005 | if (tsp_logVerbose) { |
| 1006 | log("Received M3UA_ERR -> discard"); |
| 1007 | } |
| 1008 | } |
| 1009 | else if (ischosen(pl_PDU_M3UA.m3UA_NOTIFY)) { |
| 1010 | if (tsp_logVerbose) { |
| 1011 | log("Received M3UA_NOTIFY -> discard"); |
| 1012 | } |
| 1013 | } |
| 1014 | else if (ischosen(pl_PDU_M3UA.m3UA_DUNA)) { |
| 1015 | if (tsp_logVerbose) { |
| 1016 | log("Received M3UA_DUNA -> discard"); |
| 1017 | } |
| 1018 | } |
| 1019 | else if (ischosen(pl_PDU_M3UA.m3UA_DAVA)) { |
| 1020 | if (tsp_logVerbose) { |
| 1021 | log("Received M3UA_DAVA -> discard"); |
| 1022 | } |
| 1023 | } |
| 1024 | // In server mode ASP_M3UA_DAUD messages can be received. In response the |
| 1025 | // server must send ASP_M3UA_DAVA messages. It's not checked if we're |
| 1026 | // servers or not. |
| 1027 | else if (ischosen(pl_PDU_M3UA.m3UA_DAUD)) { |
| 1028 | if ((v_Entity.commStatus == aSP_Inactive) or |
| 1029 | (v_Entity.commStatus == aSP_Inact_ASPAC_Sent) or |
| 1030 | (v_Entity.commStatus == aSP_Active)) { |
| 1031 | // Send ASP_M3UA_DAVA message. |
| 1032 | SCTP_PORT.send |
| 1033 | (t_S_SCTP_Send |
| 1034 | (v_Entity.sCTP_Assoc_ID, |
| 1035 | 0, |
| 1036 | enc_PDU_M3UA |
| 1037 | (valueof |
| 1038 | (t_PDU_M3UA_DAVA |
| 1039 | (pl_PDU_M3UA.m3UA_DAUD.messageParameters.network_Appearance, |
| 1040 | pl_PDU_M3UA.m3UA_DAUD.messageParameters.routing_Context, |
| 1041 | pl_PDU_M3UA.m3UA_DAUD.messageParameters.affected_Point_Codes, |
| 1042 | pl_PDU_M3UA.m3UA_DAUD.messageParameters.info_String))), |
| 1043 | tsp_SCTP_PayloadProtocolID)); |
| 1044 | if (tsp_logVerbose) { |
| 1045 | log("M3UA_DAUD received -> DAVA sent"); |
| 1046 | } |
| 1047 | } |
| 1048 | else { |
| 1049 | if (tsp_logVerbose) { |
| 1050 | log("M3UA_DAUD received in wrong state"); |
| 1051 | } |
| 1052 | } |
| 1053 | } |
| 1054 | else if (ischosen(pl_PDU_M3UA.m3UA_SCON)) { |
| 1055 | if (tsp_logVerbose) { |
| 1056 | log("Received M3UA_SCON -> discard"); |
| 1057 | } |
| 1058 | } |
| 1059 | else if (ischosen(pl_PDU_M3UA.m3UA_DUPU)) { |
| 1060 | if (tsp_logVerbose) { |
| 1061 | log("Received M3UA_DUPU -> discard"); |
| 1062 | } |
| 1063 | } |
| 1064 | else if (ischosen(pl_PDU_M3UA.m3UA_DRST)) { |
| 1065 | if (tsp_logVerbose) { |
| 1066 | log("Received M3UA_DRST -> discard"); |
| 1067 | } |
| 1068 | } |
| 1069 | // In server mode we can receive M3UA_ASPUP messages. The answer will be a |
| 1070 | // M3UA_ASPUP_Ack message to the client. |
| 1071 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPUP)) { |
| 1072 | if (((v_Entity.commStatus == aSP_Down_commUP_Received) or |
| 1073 | (v_Entity.commStatus == aSP_Down_ASPUP_Sent)) and |
| 1074 | tsp_M3UA_Server_Mode) { |
| 1075 | v_Entity.commStatus := aSP_Inactive; |
| 1076 | SCTP_PORT.send |
| 1077 | (t_S_SCTP_Send |
| 1078 | (v_Entity.sCTP_Assoc_ID, |
| 1079 | 0, |
| 1080 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPUP_Ack)), |
| 1081 | tsp_SCTP_PayloadProtocolID)); |
| 1082 | if (tsp_logVerbose) { |
| 1083 | log("M3UA_ASPUP received -> M3UA_ASPUP_Ack sent"); |
| 1084 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1085 | v_Entity.commStatus); |
| 1086 | } |
| 1087 | } |
| 1088 | else { |
| 1089 | if (tsp_logVerbose) { |
| 1090 | log("M3UA_ASPUP received in wrong state or the emulation is not in " & |
| 1091 | "M3UA server mode"); |
| 1092 | } |
| 1093 | } |
| 1094 | } |
| 1095 | // Receives a M3UA_ASPDN message and sends a M3UA_ASPDN_Ack message in |
| 1096 | // response. |
| 1097 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPDN)) { |
| 1098 | if ((v_Entity.commStatus == aSP_Inactive) or |
| 1099 | (v_Entity.commStatus == aSP_Inact_ASPAC_Sent) or |
| 1100 | (v_Entity.commStatus == aSP_Active)) { |
| 1101 | SCTP_PORT.send |
| 1102 | (t_S_SCTP_Send |
| 1103 | (v_Entity.sCTP_Assoc_ID, |
| 1104 | 0, |
| 1105 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPDN_Ack)), |
| 1106 | tsp_SCTP_PayloadProtocolID)); |
| 1107 | if (v_Entity.commStatus == aSP_Active) { |
| 1108 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 1109 | } |
| 1110 | v_Entity.commStatus := aSP_Down_commUP_Received; |
| 1111 | if (tsp_logVerbose) { |
| 1112 | log("M3UA_ASPDN received -> ASPDN_Ack sent"); |
| 1113 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1114 | v_Entity.commStatus); |
| 1115 | } |
| 1116 | } |
| 1117 | else { |
| 1118 | if (tsp_logVerbose) { |
| 1119 | log("ASPDN received in wrong state or the emulation is not in M3UA " & |
| 1120 | "server mode"); |
| 1121 | } |
| 1122 | } |
| 1123 | } |
| 1124 | // The M3UA client receives M3UA_ASPUP_Ack messages from the server. In |
| 1125 | // response of a M3UA_ASPUP message sent by the client. |
| 1126 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPUP_Ack)) { |
| 1127 | if (((v_Entity.commStatus == aSP_Down_ASPUP_Sent) or |
| 1128 | (v_Entity.commStatus == aSP_Inactive)) and |
| 1129 | not tsp_M3UA_Server_Mode) { |
| 1130 | v_Entity.commStatus := aSP_Inactive; |
| 1131 | if (tsp_logVerbose) { |
| 1132 | log("M3UA_ASPUP_Ack received -> send M3UA_ASPAC"); |
| 1133 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1134 | v_Entity.commStatus); |
| 1135 | } |
| 1136 | SCTP_PORT.send |
| 1137 | (t_S_SCTP_Send |
| 1138 | (v_Entity.sCTP_Assoc_ID, |
| 1139 | 0, |
| 1140 | enc_PDU_M3UA(valueof(t_PDU_M3UA_ASPAC(omit, omit, omit))), |
| 1141 | tsp_SCTP_PayloadProtocolID)); |
| 1142 | // The state changes again after sending the M3UA_ASPAC message. |
| 1143 | v_Entity.commStatus := aSP_Inact_ASPAC_Sent; |
| 1144 | if (tsp_logVerbose) { |
| 1145 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1146 | v_Entity.commStatus); |
| 1147 | } |
| 1148 | } |
| 1149 | else { |
| 1150 | if (tsp_logVerbose) { |
| 1151 | log("M3UA_ASPUP_Ack received in wrong state or the emulation is not " & |
| 1152 | "in M3UA client mode"); |
| 1153 | } |
| 1154 | } |
| 1155 | } |
| 1156 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPDN_Ack)) { |
| 1157 | if (tsp_logVerbose) { |
| 1158 | log("Received M3UA_ASPDN_Ack -> discard"); |
| 1159 | } |
| 1160 | } |
| 1161 | // M3UA_ASPAC messages are received on the server side. The server sends a |
| 1162 | // M3UA_ASPAC_Ack message back to the client. This step makes the |
| 1163 | // association active on both sides. |
| 1164 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPAC)) { |
| 1165 | if (((v_Entity.commStatus == aSP_Inactive) or |
| 1166 | (v_Entity.commStatus == aSP_Inact_ASPAC_Sent)) and |
| 1167 | tsp_M3UA_Server_Mode) { |
| 1168 | v_Entity.commStatus := aSP_Active; |
| 1169 | if (tsp_logVerbose) { |
| 1170 | log("M3UA_ASPAC received -> M3UA_ASPAC_Ack sent"); |
| 1171 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1172 | v_Entity.commStatus); |
| 1173 | } |
| 1174 | var integer v_i; |
| 1175 | for (v_i := 0; v_i < sizeof(v_TRANSFERreq_Buffer); v_i := v_i + 1) { |
| 1176 | log("Sending buffered message #", v_i); |
| 1177 | f_Send_MTP3_TRANSFERreq(v_TRANSFERreq_Buffer[v_i]); |
| 1178 | } |
| 1179 | v_TRANSFERreq_Buffer := {}; |
| 1180 | // Send M3UA_ASPAC_Ack. |
| 1181 | SCTP_PORT.send |
| 1182 | (t_S_SCTP_Send |
| 1183 | (v_Entity.sCTP_Assoc_ID, |
| 1184 | 0, |
| 1185 | enc_PDU_M3UA |
| 1186 | (valueof |
| 1187 | (t_PDU_M3UA_ASPAC_Ack |
| 1188 | (pl_PDU_M3UA.m3UA_ASPAC.messageParameters.traffic_Mode_Type, |
| 1189 | pl_PDU_M3UA.m3UA_ASPAC.messageParameters.routing_Context))), |
| 1190 | tsp_SCTP_PayloadProtocolID)); |
| 1191 | // MTP3_SP_PORT.send(ASP_MTP3_RESUME : {}); |
| 1192 | } |
| 1193 | else { |
| 1194 | if (tsp_logVerbose) { |
| 1195 | log("M3UA_ASPAC received in wrong state or the emulation is not in " & |
| 1196 | "M3UA server mode"); |
| 1197 | } |
| 1198 | } |
| 1199 | } |
| 1200 | // The client receives M3UA_ASPAC_Ack messages from the server. The |
| 1201 | // association will be activated. The buffered messages should be send here. |
| 1202 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPAC_Ack)) { |
| 1203 | if (((v_Entity.commStatus == aSP_Inact_ASPAC_Sent) or |
| 1204 | (v_Entity.commStatus == aSP_Active)) and |
| 1205 | not tsp_M3UA_Server_Mode) { |
| 1206 | // MTP3_SP_PORT.send(ASP_MTP3_RESUME : {}); |
| 1207 | v_Entity.commStatus := aSP_Active; |
| 1208 | if (tsp_logVerbose) { |
| 1209 | log("ASPAC_Ack received for association #", v_Entity.sCTP_Assoc_ID); |
| 1210 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1211 | v_Entity.commStatus); |
| 1212 | } |
| 1213 | var integer v_i; |
| 1214 | for (v_i := 0; v_i < sizeof(v_TRANSFERreq_Buffer); v_i := v_i + 1) { |
| 1215 | log("Sending buffered message #", v_i); |
| 1216 | f_Send_MTP3_TRANSFERreq(v_TRANSFERreq_Buffer[v_i]); |
| 1217 | } |
| 1218 | v_TRANSFERreq_Buffer := {}; |
| 1219 | } |
| 1220 | else { |
| 1221 | if (tsp_logVerbose) { |
| 1222 | log("M3UA_ASPAC_Ack received in wrong state on association #", |
| 1223 | v_Entity.sCTP_Assoc_ID, " or the emulation is not in M3UA " & |
| 1224 | "client mode"); |
| 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | // Receives a M3UA_ASPIA message and sends back a M3UA_ASPIA_Ack message in |
| 1229 | // response. |
| 1230 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPIA)) { |
| 1231 | if (v_Entity.commStatus == aSP_Active) { |
| 1232 | SCTP_PORT.send |
| 1233 | (t_S_SCTP_Send |
| 1234 | (v_Entity.sCTP_Assoc_ID, |
| 1235 | 0, |
| 1236 | enc_PDU_M3UA |
| 1237 | (valueof |
| 1238 | (t_PDU_M3UA_ASPIA_Ack |
| 1239 | (pl_PDU_M3UA.m3UA_ASPIA.messageParameters.routing_Context))), |
| 1240 | tsp_SCTP_PayloadProtocolID)); |
| 1241 | // MTP3_SP_PORT.send(ASP_MTP3_PAUSE : {}); |
| 1242 | v_Entity.commStatus := aSP_Inactive; |
| 1243 | if (tsp_logVerbose) { |
| 1244 | log("M3UA_ASPIA received -> M3UA_ASPIA_Ack sent"); |
| 1245 | log("Association #", v_Entity.sCTP_Assoc_ID, " state changed to: ", |
| 1246 | v_Entity.commStatus); |
| 1247 | } |
| 1248 | } |
| 1249 | else { |
| 1250 | if (tsp_logVerbose) { |
| 1251 | log("M3UA_ASPIA received in wrong state or the emulation is not " & |
| 1252 | "running in M3UA server mode"); |
| 1253 | } |
| 1254 | } |
| 1255 | } |
| 1256 | else if (ischosen(pl_PDU_M3UA.m3UA_ASPIA_Ack)) { |
| 1257 | if (tsp_logVerbose) { |
| 1258 | log("Received M3UA_ASPIA_Ack -> discard"); |
| 1259 | } |
| 1260 | } |
| 1261 | else if (ischosen(pl_PDU_M3UA.m3UA_REG_REQ)) { |
| 1262 | if (tsp_logVerbose) { |
| 1263 | log("Received M3UA_REG_REQ -> discard"); |
| 1264 | } |
| 1265 | } |
| 1266 | else if (ischosen(pl_PDU_M3UA.m3UA_REG_RSP)) { |
| 1267 | if (tsp_logVerbose) { |
| 1268 | log("Received M3UA_REG_RSP -> discard"); |
| 1269 | } |
| 1270 | } |
| 1271 | else if (ischosen(pl_PDU_M3UA.m3UA_DEREG_REQ)) { |
| 1272 | if (tsp_logVerbose) { |
| 1273 | log("Received M3UA_DEREG_REQ -> discard"); |
| 1274 | } |
| 1275 | } |
| 1276 | else if (ischosen(pl_PDU_M3UA.m3UA_DEREG_RSP)) { |
| 1277 | if (tsp_logVerbose) { |
| 1278 | log("Received M3UA_DEREG_RSP -> discard"); |
| 1279 | } |
| 1280 | } |
| 1281 | } |
| 1282 | |
| 1283 | function f_handle_nonM3UA_msg(octetstring pl_PDU) runs on M3UA_CT |
| 1284 | { |
| 1285 | if (v_Entity.commStatus == aSP_Active) { |
| 1286 | // Send TRANSFERind message. |
| 1287 | MTP3_SP_PORT.send(valueof |
| 1288 | (tr_ASP_MTP3_TRANSFERind_sio |
| 1289 | ('00'B, |
| 1290 | '00'B, |
| 1291 | '0000'B, |
| 1292 | 0, |
| 1293 | 0, |
| 1294 | 0, |
| 1295 | pl_PDU))); |
| 1296 | if (tsp_logVerbose) { |
| 1297 | log("Non-M3UA DATA received -> TRANSFERind sent"); |
| 1298 | } |
| 1299 | } |
| 1300 | else { |
| 1301 | if (tsp_logVerbose) { |
| 1302 | log("DATA received, but no user connected -> discard"); |
| 1303 | } |
| 1304 | } |
| 1305 | } |
| 1306 | |
| 1307 | } |