tests/hwsim/test_p2p_persistent.py

   1 # P2P persistent group test cases
   2 # Copyright (c) 2013-2014, Jouni Malinen <j@w1.fi>
   3 #
   4 # This software may be distributed under the terms of the BSD license.
   5 # See README for more details.
   6
   7 import logging
   8 logger = logging.getLogger()
   9 import re
  10 import time
  11
  12 import hwsim_utils
  13 from test_p2p_autogo import connect_cli
  14
  15 def go_neg_pin_authorized_persistent(i_dev, r_dev, i_intent=None, r_intent=None, i_method='enter', r_method='display', test_data=True):
  16     r_dev.p2p_listen()
  17     i_dev.p2p_listen()
  18     pin = r_dev.wps_read_pin()
  19     logger.info("Start GO negotiation " + i_dev.ifname + " -> " + r_dev.ifname)
  20     r_dev.p2p_go_neg_auth(i_dev.p2p_dev_addr(), pin, r_method,
  21                           go_intent=r_intent, persistent=True)
  22     i_res = i_dev.p2p_go_neg_init(r_dev.p2p_dev_addr(), pin, i_method,
  23                                   timeout=20, go_intent=i_intent,
  24                                   persistent=True)
  25     r_res = r_dev.p2p_go_neg_auth_result()
  26     logger.debug("i_res: " + str(i_res))
  27     logger.debug("r_res: " + str(r_res))
  28     r_dev.dump_monitor()
  29     i_dev.dump_monitor()
  30     logger.info("Group formed")
  31     if test_data:
  32         hwsim_utils.test_connectivity_p2p(r_dev, i_dev)
  33     return [i_res, r_res]
  34
  35 def terminate_group(go, cli):
  36     logger.info("Terminate persistent group")
  37     go.remove_group()
  38     cli.wait_go_ending_session()
  39
  40 def invite(inv, resp, extra=None, persistent_reconnect=True):
  41     addr = resp.p2p_dev_addr()
  42     if persistent_reconnect:
  43         resp.request("SET persistent_reconnect 1")
  44     else:
  45         resp.request("SET persistent_reconnect 0")
  46     resp.p2p_listen()
  47     if not inv.discover_peer(addr, social=True):
  48         raise Exception("Peer " + addr + " not found")
  49     inv.dump_monitor()
  50     peer = inv.get_peer(addr)
  51     cmd = "P2P_INVITE persistent=" + peer['persistent'] + " peer=" + addr
  52     if extra:
  53         cmd = cmd + " " + extra;
  54     inv.global_request(cmd)
  55
  56 def check_result(go, cli):
  57     ev = go.wait_global_event(["P2P-GROUP-STARTED"], timeout=30)
  58     if ev is None:
  59         raise Exception("Timeout on group re-invocation (on GO)")
  60     if "[PERSISTENT]" not in ev:
  61         raise Exception("Re-invoked group not marked persistent")
  62     go_res = go.group_form_result(ev)
  63     if go_res['role'] != 'GO':
  64         raise Exception("Persistent group GO did not become GO")
  65     if not go_res['persistent']:
  66         raise Exception("Persistent group not re-invoked as persistent (GO)")
  67     ev = cli.wait_global_event(["P2P-GROUP-STARTED"], timeout=30)
  68     if ev is None:
  69         raise Exception("Timeout on group re-invocation (on client)")
  70     if "[PERSISTENT]" not in ev:
  71         raise Exception("Re-invoked group not marked persistent")
  72     cli_res = cli.group_form_result(ev)
  73     if cli_res['role'] != 'client':
  74         raise Exception("Persistent group client did not become client")
  75     if not cli_res['persistent']:
  76         raise Exception("Persistent group not re-invoked as persistent (cli)")
  77     return [go_res, cli_res]
  78
  79 def form(go, cli, test_data=True, reverse_init=False):
  80     logger.info("Form a persistent group")
  81     if reverse_init:
  82         [i_res, r_res] = go_neg_pin_authorized_persistent(i_dev=cli, i_intent=0,
  83                                                           r_dev=go, r_intent=15,
  84                                                           test_data=test_data)
  85     else:
  86         [i_res, r_res] = go_neg_pin_authorized_persistent(i_dev=go, i_intent=15,
  87                                                           r_dev=cli, r_intent=0,
  88                                                           test_data=test_data)
  89     if not i_res['persistent'] or not r_res['persistent']:
  90         raise Exception("Formed group was not persistent")
  91     terminate_group(go, cli)
  92     if reverse_init:
  93         return r_res
  94     else:
  95         return i_res
  96
  97 def invite_from_cli(go, cli):
  98     logger.info("Re-invoke persistent group from client")
  99     invite(cli, go)
 100     [go_res, cli_res] = check_result(go, cli)
 101     hwsim_utils.test_connectivity_p2p(go, cli)
 102     terminate_group(go, cli)
 103     return [go_res, cli_res]
 104
 105 def invite_from_go(go, cli):
 106     logger.info("Re-invoke persistent group from GO")
 107     invite(go, cli)
 108     [go_res, cli_res] = check_result(go, cli)
 109     hwsim_utils.test_connectivity_p2p(go, cli)
 110     terminate_group(go, cli)
 111     return [go_res, cli_res]
 112
 113 def test_persistent_group(dev):
 114     """P2P persistent group formation and re-invocation"""
 115     form(dev[0], dev[1])
 116     invite_from_cli(dev[0], dev[1])
 117     invite_from_go(dev[0], dev[1])
 118
 119     logger.info("Remove group on the client and try to invite from GO")
 120     id = None
 121     for n in dev[0].list_networks():
 122         if "[P2P-PERSISTENT]" in n['flags']:
 123             id = n['id']
 124             break
 125     if id is None:
 126         raise Exception("Could not find persistent group entry")
 127     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 128     if dev[1].p2p_dev_addr() not in clients:
 129         raise Exception("Peer missing from client list")
 130     if "FAIL" not in dev[1].request("SELECT_NETWORK " + str(id)):
 131         raise Exception("SELECT_NETWORK succeeded unexpectedly")
 132     if "FAIL" not in dev[1].request("SELECT_NETWORK 1234567"):
 133         raise Exception("SELECT_NETWORK succeeded unexpectedly(2)")
 134     if "FAIL" not in dev[1].request("ENABLE_NETWORK " + str(id)):
 135         raise Exception("ENABLE_NETWORK succeeded unexpectedly")
 136     if "FAIL" not in dev[1].request("ENABLE_NETWORK 1234567"):
 137         raise Exception("ENABLE_NETWORK succeeded unexpectedly(2)")
 138     if "FAIL" not in dev[1].request("DISABLE_NETWORK " + str(id)):
 139         raise Exception("DISABLE_NETWORK succeeded unexpectedly")
 140     if "FAIL" not in dev[1].request("DISABLE_NETWORK 1234567"):
 141         raise Exception("DISABLE_NETWORK succeeded unexpectedly(2)")
 142     if "FAIL" not in dev[1].request("REMOVE_NETWORK 1234567"):
 143         raise Exception("REMOVE_NETWORK succeeded unexpectedly")
 144     dev[1].request("REMOVE_NETWORK all")
 145     if len(dev[1].list_networks()) > 0:
 146         raise Exception("Unexpected network block remaining")
 147     invite(dev[0], dev[1])
 148     ev = dev[0].wait_global_event(["P2P-INVITATION-RESULT"], timeout=10)
 149     if ev is None:
 150         raise Exception("No invitation result seen")
 151     if "status=8" not in ev:
 152         raise Exception("Unexpected invitation result: " + ev)
 153     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 154     if dev[1].p2p_dev_addr() in clients:
 155         raise Exception("Peer was still in client list")
 156
 157 def test_persistent_group2(dev):
 158     """P2P persistent group formation with reverse roles"""
 159     form(dev[0], dev[1], reverse_init=True)
 160     invite_from_cli(dev[0], dev[1])
 161     invite_from_go(dev[0], dev[1])
 162
 163 def test_persistent_group3(dev):
 164     """P2P persistent group formation and re-invocation with empty BSS table"""
 165     form(dev[0], dev[1])
 166     dev[1].request("BSS_FLUSH 0")
 167     invite_from_cli(dev[0], dev[1])
 168     dev[1].request("BSS_FLUSH 0")
 169     invite_from_go(dev[0], dev[1])
 170
 171 def test_persistent_group_per_sta_psk(dev):
 172     """P2P persistent group formation and re-invocation using per-client PSK"""
 173     addr0 = dev[0].p2p_dev_addr()
 174     addr1 = dev[1].p2p_dev_addr()
 175     addr2 = dev[2].p2p_dev_addr()
 176     dev[0].request("P2P_SET per_sta_psk 1")
 177     logger.info("Form a persistent group")
 178     [i_res, r_res] = go_neg_pin_authorized_persistent(i_dev=dev[0], i_intent=15,
 179                                                       r_dev=dev[1], r_intent=0)
 180     if not i_res['persistent'] or not r_res['persistent']:
 181         raise Exception("Formed group was not persistent")
 182
 183     logger.info("Join another client to the group")
 184     pin = dev[2].wps_read_pin()
 185     dev[0].p2p_go_authorize_client(pin)
 186     c_res = dev[2].p2p_connect_group(addr0, pin, timeout=60)
 187     if not c_res['persistent']:
 188         raise Exception("Joining client did not recognize persistent group")
 189     if r_res['psk'] == c_res['psk']:
 190         raise Exception("Same PSK assigned for both clients")
 191     hwsim_utils.test_connectivity_p2p_sta(dev[1], dev[2])
 192
 193     logger.info("Remove persistent group and re-start it manually")
 194     dev[0].remove_group()
 195     dev[1].wait_go_ending_session()
 196     dev[2].wait_go_ending_session()
 197     dev[0].dump_monitor()
 198
 199     for i in range(0, 3):
 200         networks = dev[i].list_networks()
 201         if len(networks) != 1:
 202             raise Exception("Unexpected number of networks")
 203         if "[P2P-PERSISTENT]" not in networks[0]['flags']:
 204             raise Exception("Not the persistent group data")
 205         if "OK" not in dev[i].global_request("P2P_GROUP_ADD persistent=" + networks[0]['id'] + " freq=2412"):
 206             raise Exception("Could not re-start persistent group")
 207         ev = dev[i].wait_global_event(["P2P-GROUP-STARTED"], timeout=30)
 208         if ev is None:
 209             raise Exception("Timeout on group restart")
 210
 211     logger.info("Leave persistent group and rejoin it")
 212     dev[2].remove_group()
 213     ev = dev[2].wait_event(["P2P-GROUP-REMOVED"], timeout=3)
 214     if ev is None:
 215         raise Exception("Group removal event timed out")
 216     if not dev[2].discover_peer(addr0, social=True):
 217         raise Exception("Peer " + peer + " not found")
 218     dev[2].dump_monitor()
 219     peer = dev[2].get_peer(addr0)
 220     dev[2].global_request("P2P_GROUP_ADD persistent=" + peer['persistent'])
 221     ev = dev[2].wait_global_event(["P2P-GROUP-STARTED"], timeout=30)
 222     if ev is None:
 223         raise Exception("Timeout on group restart (on client)")
 224     cli_res = dev[2].group_form_result(ev)
 225     if not cli_res['persistent']:
 226         raise Exception("Persistent group not restarted as persistent (cli)")
 227     hwsim_utils.test_connectivity_p2p(dev[1], dev[2])
 228
 229     logger.info("Remove one of the clients from the group")
 230     dev[0].global_request("P2P_REMOVE_CLIENT " + addr2)
 231     dev[2].wait_go_ending_session()
 232
 233     logger.info("Try to reconnect after having been removed from group")
 234     if not dev[2].discover_peer(addr0, social=True):
 235         raise Exception("Peer " + peer + " not found")
 236     dev[2].dump_monitor()
 237     peer = dev[2].get_peer(addr0)
 238     dev[2].global_request("P2P_GROUP_ADD persistent=" + peer['persistent'])
 239     ev = dev[2].wait_global_event(["P2P-GROUP-STARTED","WPA: 4-Way Handshake failed"], timeout=30)
 240     if ev is None:
 241         raise Exception("Timeout on group restart (on client)")
 242     if "P2P-GROUP-STARTED" in ev:
 243         raise Exception("Client managed to connect after being removed")
 244
 245     logger.info("Remove the remaining client from the group")
 246     dev[0].global_request("P2P_REMOVE_CLIENT " + addr1)
 247     dev[1].wait_go_ending_session()
 248
 249     logger.info("Terminate persistent group")
 250     dev[0].remove_group()
 251     dev[0].dump_monitor()
 252
 253     logger.info("Try to re-invoke persistent group from client")
 254     dev[0].request("SET persistent_reconnect 1")
 255     dev[0].p2p_listen()
 256     if not dev[1].discover_peer(addr0, social=True):
 257         raise Exception("Peer " + peer + " not found")
 258     dev[1].dump_monitor()
 259     peer = dev[1].get_peer(addr0)
 260     dev[1].global_request("P2P_INVITE persistent=" + peer['persistent'] + " peer=" + addr0)
 261     ev = dev[1].wait_global_event(["P2P-GROUP-STARTED","WPA: 4-Way Handshake failed"], timeout=30)
 262     if ev is None:
 263         raise Exception("Timeout on group restart (on client)")
 264     if "P2P-GROUP-STARTED" in ev:
 265         raise Exception("Client managed to re-invoke after being removed")
 266     dev[0].dump_monitor()
 267
 268     logger.info("Terminate persistent group")
 269     dev[0].remove_group()
 270     dev[0].dump_monitor()
 271
 272 def test_persistent_group_invite_removed_client(dev):
 273     """P2P persistent group client removal and re-invitation"""
 274     addr0 = dev[0].p2p_dev_addr()
 275     addr1 = dev[1].p2p_dev_addr()
 276     dev[0].request("P2P_SET per_sta_psk 1")
 277     logger.info("Form a persistent group")
 278     [i_res, r_res] = go_neg_pin_authorized_persistent(i_dev=dev[0], i_intent=15,
 279                                                       r_dev=dev[1], r_intent=0)
 280     if not i_res['persistent'] or not r_res['persistent']:
 281         raise Exception("Formed group was not persistent")
 282
 283     logger.info("Remove client from the group")
 284     dev[0].global_request("P2P_REMOVE_CLIENT " + addr1)
 285     dev[1].wait_go_ending_session()
 286
 287     logger.info("Re-invite the removed client to join the group")
 288     dev[1].p2p_listen()
 289     if not dev[0].discover_peer(addr1, social=True):
 290         raise Exception("Peer " + peer + " not found")
 291     dev[0].global_request("P2P_INVITE group=" + dev[0].group_ifname + " peer=" + addr1)
 292     ev = dev[1].wait_global_event(["P2P-INVITATION-RECEIVED"], timeout=10)
 293     if ev is None:
 294         raise Exception("Timeout on invitation")
 295     if "sa=" + addr0 + " persistent=" not in ev:
 296         raise Exception("Unexpected invitation event")
 297     [event,addr,persistent] = ev.split(' ', 2)
 298     dev[1].global_request("P2P_GROUP_ADD " + persistent)
 299     ev = dev[1].wait_global_event(["P2P-PERSISTENT-PSK-FAIL"], timeout=30)
 300     if ev is None:
 301         raise Exception("Did not receive PSK failure report")
 302     [tmp,id] = ev.split('=', 1)
 303     ev = dev[1].wait_global_event(["P2P-GROUP-REMOVED"], timeout=10)
 304     if ev is None:
 305         raise Exception("Group removal event timed out")
 306     if "reason=PSK_FAILURE" not in ev:
 307         raise Exception("Unexpected group removal reason")
 308     dev[1].request("REMOVE_NETWORK " + id)
 309
 310     logger.info("Re-invite after client removed persistent group info")
 311     dev[1].p2p_listen()
 312     if not dev[0].discover_peer(addr1, social=True):
 313         raise Exception("Peer " + peer + " not found")
 314     dev[0].global_request("P2P_INVITE group=" + dev[0].group_ifname + " peer=" + addr1)
 315     ev = dev[1].wait_global_event(["P2P-INVITATION-RECEIVED"], timeout=10)
 316     if ev is None:
 317         raise Exception("Timeout on invitation")
 318     if " persistent=" in ev:
 319         raise Exception("Unexpected invitation event")
 320     pin = dev[1].wps_read_pin()
 321     dev[0].p2p_go_authorize_client(pin)
 322     c_res = dev[1].p2p_connect_group(addr0, pin, timeout=60)
 323     if not c_res['persistent']:
 324         raise Exception("Joining client did not recognize persistent group")
 325     if r_res['psk'] == c_res['psk']:
 326         raise Exception("Same PSK assigned on both times")
 327     hwsim_utils.test_connectivity_p2p(dev[0], dev[1])
 328
 329     terminate_group(dev[0], dev[1])
 330
 331 def test_persistent_group_channel(dev):
 332     """P2P persistent group re-invocation with channel selection"""
 333     form(dev[0], dev[1], test_data=False)
 334
 335     logger.info("Re-invoke persistent group from client with forced channel")
 336     invite(dev[1], dev[0], "freq=2427")
 337     [go_res, cli_res] = check_result(dev[0], dev[1])
 338     if go_res['freq'] != "2427":
 339         raise Exception("Persistent group client forced channel not followed")
 340     terminate_group(dev[0], dev[1])
 341
 342     logger.info("Re-invoke persistent group from GO with forced channel")
 343     invite(dev[0], dev[1], "freq=2432")
 344     [go_res, cli_res] = check_result(dev[0], dev[1])
 345     if go_res['freq'] != "2432":
 346         raise Exception("Persistent group GO channel preference not followed")
 347     terminate_group(dev[0], dev[1])
 348
 349     logger.info("Re-invoke persistent group from client with channel preference")
 350     invite(dev[1], dev[0], "pref=2417")
 351     [go_res, cli_res] = check_result(dev[0], dev[1])
 352     if go_res['freq'] != "2417":
 353         raise Exception("Persistent group client channel preference not followed")
 354     terminate_group(dev[0], dev[1])
 355
 356 def test_persistent_group_and_role_change(dev):
 357     """P2P persistent group, auto GO in another role, and re-invocation"""
 358     form(dev[0], dev[1])
 359
 360     logger.info("Start and stop autonomous GO on previous P2P client device")
 361     dev[1].p2p_start_go()
 362     dev[1].remove_group()
 363     dev[1].dump_monitor()
 364
 365     logger.info("Re-invoke the persistent group")
 366     invite_from_go(dev[0], dev[1])
 367
 368 def test_persistent_go_client_list(dev):
 369     """P2P GO and list of clients in persistent group"""
 370     addr0 = dev[0].p2p_dev_addr()
 371     addr1 = dev[1].p2p_dev_addr()
 372     addr2 = dev[2].p2p_dev_addr()
 373
 374     res = dev[0].p2p_start_go(persistent=True)
 375     id = None
 376     for n in dev[0].list_networks():
 377         if "[P2P-PERSISTENT]" in n['flags']:
 378             id = n['id']
 379             break
 380     if id is None:
 381         raise Exception("Could not find persistent group entry")
 382
 383     connect_cli(dev[0], dev[1])
 384     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 385     if clients != addr1:
 386         raise Exception("Unexpected p2p_client_list entry(2): " + clients)
 387     connect_cli(dev[0], dev[2])
 388     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 389     if clients != addr2 + " " + addr1:
 390         raise Exception("Unexpected p2p_client_list entry(3): " + clients)
 391
 392     peer = dev[1].get_peer(res['go_dev_addr'])
 393     dev[1].remove_group()
 394     dev[1].request("P2P_GROUP_ADD persistent=" + peer['persistent'])
 395     ev = dev[1].wait_global_event(["P2P-GROUP-STARTED"], timeout=30)
 396     if ev is None:
 397         raise Exception("Timeout on group restart (on client)")
 398     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 399     if clients != addr1 + " " + addr2:
 400         raise Exception("Unexpected p2p_client_list entry(4): " + clients)
 401
 402     dev[2].remove_group()
 403     dev[1].remove_group()
 404     dev[0].remove_group()
 405
 406     clients = dev[0].request("GET_NETWORK " + id + " p2p_client_list").rstrip()
 407     if clients != addr1 + " " + addr2:
 408         raise Exception("Unexpected p2p_client_list entry(5): " + clients)
 409
 410     dev[1].p2p_listen()
 411     dev[2].p2p_listen()
 412     dev[0].request("P2P_FLUSH")
 413     dev[0].discover_peer(addr1, social=True)
 414     peer = dev[0].get_peer(addr1)
 415     if 'persistent' not in peer or peer['persistent'] != id:
 416         raise Exception("Persistent group client not recognized(1)")
 417
 418     dev[0].discover_peer(addr2, social=True)
 419     peer = dev[0].get_peer(addr2)
 420     if 'persistent' not in peer or peer['persistent'] != id:
 421         raise Exception("Persistent group client not recognized(2)")
 422
 423 def test_persistent_group_in_grpform(dev):
 424     """P2P persistent group parameters re-used in group formation"""
 425     addr0 = dev[0].p2p_dev_addr()
 426     addr1 = dev[1].p2p_dev_addr()
 427     form(dev[0], dev[1])
 428     dev[1].p2p_listen()
 429     if not dev[0].discover_peer(addr1, social=True):
 430         raise Exception("Could not discover peer")
 431     peer = dev[0].get_peer(addr1)
 432     if "persistent" not in peer:
 433         raise Exception("Could not map peer to a persistent group")
 434
 435     pin = dev[1].wps_read_pin()
 436     dev[1].p2p_go_neg_auth(addr0, pin, "display", go_intent=0)
 437     i_res = dev[0].p2p_go_neg_init(addr1, pin, "enter", timeout=20,
 438                                    go_intent=15,
 439                                    persistent_id=peer['persistent'])
 440     r_res = dev[1].p2p_go_neg_auth_result()
 441     logger.debug("i_res: " + str(i_res))
 442     logger.debug("r_res: " + str(r_res))
 443
 444 def test_persistent_group_without_persistent_reconnect(dev):
 445     """P2P persistent group re-invocation without persistent reconnect"""
 446     form(dev[0], dev[1])
 447     dev[0].dump_monitor()
 448     dev[1].dump_monitor()
 449
 450     logger.info("Re-invoke persistent group from client")
 451     invite(dev[1], dev[0], persistent_reconnect=False)
 452
 453     ev = dev[0].wait_global_event(["P2P-INVITATION-RECEIVED"], timeout=15)
 454     if ev is None:
 455         raise Exception("No invitation request reported");
 456     if "persistent=" not in ev:
 457         raise Exception("Invalid invitation type reported: " + ev)
 458
 459     ev2 = dev[1].wait_global_event(["P2P-INVITATION-RESULT"], timeout=15)
 460     if ev2 is None:
 461         raise Exception("No invitation response reported");
 462     if "status=1" not in ev2:
 463         raise Exception("Unexpected status: " + ev2)
 464     dev[1].p2p_listen()
 465
 466     exp = r'<.>(P2P-INVITATION-RECEIVED) sa=([0-9a-f:]*) persistent=([0-9]*) freq=([0-9]*)'
 467     s = re.split(exp, ev)
 468     if len(s) < 5:
 469         raise Exception("Could not parse invitation event")
 470     sa = s[2]
 471     id = s[3]
 472     freq = s[4]
 473     logger.info("Re-initiate invitation based on upper layer acceptance")
 474     if "OK" not in dev[0].global_request("P2P_INVITE persistent=" + id + " peer=" + sa + " freq=" + freq):
 475         raise Exception("Invitation command failed")
 476     [go_res, cli_res] = check_result(dev[0], dev[1])
 477     if go_res['freq'] != freq:
 478         raise Exception("Unexpected channel on GO: {} MHz, expected {} MHz".format(go_res['freq'], freq))
 479     if cli_res['freq'] != freq:
 480         raise Exception("Unexpected channel on CLI: {} MHz, expected {} MHz".format(cli_res['freq'], freq))
 481     terminate_group(dev[0], dev[1])
 482     dev[0].dump_monitor()
 483     dev[1].dump_monitor()
 484
 485     logger.info("Re-invoke persistent group from GO")
 486     invite(dev[0], dev[1], persistent_reconnect=False)
 487
 488     ev = dev[1].wait_global_event(["P2P-INVITATION-RECEIVED"], timeout=15)
 489     if ev is None:
 490         raise Exception("No invitation request reported");
 491     if "persistent=" not in ev:
 492         raise Exception("Invalid invitation type reported: " + ev)
 493
 494     ev2 = dev[0].wait_global_event(["P2P-INVITATION-RESULT"], timeout=15)
 495     if ev2 is None:
 496         raise Exception("No invitation response reported");
 497     if "status=1" not in ev2:
 498         raise Exception("Unexpected status: " + ev2)
 499     dev[0].p2p_listen()
 500
 501     exp = r'<.>(P2P-INVITATION-RECEIVED) sa=([0-9a-f:]*) persistent=([0-9]*)'
 502     s = re.split(exp, ev)
 503     if len(s) < 4:
 504         raise Exception("Could not parse invitation event")
 505     sa = s[2]
 506     id = s[3]
 507     logger.info("Re-initiate invitation based on upper layer acceptance")
 508     if "OK" not in dev[1].global_request("P2P_INVITE persistent=" + id + " peer=" + sa + " freq=" + freq):
 509         raise Exception("Invitation command failed")
 510     [go_res, cli_res] = check_result(dev[0], dev[1])
 511     terminate_group(dev[0], dev[1])
 512
 513 def test_persistent_group_already_running(dev):
 514     """P2P persistent group formation and invitation while GO already running"""
 515     form(dev[0], dev[1])
 516     peer = dev[1].get_peer(dev[0].p2p_dev_addr())
 517     listen_freq = peer['listen_freq']
 518     dev[0].dump_monitor()
 519     dev[1].dump_monitor()
 520     networks = dev[0].list_networks()
 521     if len(networks) != 1:
 522         raise Exception("Unexpected number of networks")
 523     if "[P2P-PERSISTENT]" not in networks[0]['flags']:
 524         raise Exception("Not the persistent group data")
 525     if "OK" not in dev[0].global_request("P2P_GROUP_ADD persistent=" + networks[0]['id'] + " freq=" + listen_freq):
 526         raise Exception("Could not state GO")
 527     invite_from_cli(dev[0], dev[1])