tests/test-fallback.c

   1 /*
   2  * This file is part of the Nice GLib ICE library.
   3  *
   4  * Contains a unit test for functionality to fallback to non-ICE
   5  * operation if remote party does not support ICE.
   6  *
   7  * (C) 2007 Nokia Corporation. All rights reserved.
   8  *  Contact: Kai Vehmanen
   9  *
  10  * The contents of this file are subject to the Mozilla Public License Version
  11  * 1.1 (the "License"); you may not use this file except in compliance with
  12  * the License. You may obtain a copy of the License at
  13  * http://www.mozilla.org/MPL/
  14  *
  15  * Software distributed under the License is distributed on an "AS IS" basis,
  16  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  17  * for the specific language governing rights and limitations under the
  18  * License.
  19  *
  20  * The Original Code is the Nice GLib ICE library.
  21  *
  22  * The Initial Developers of the Original Code are Collabora Ltd and Nokia
  23  * Corporation. All Rights Reserved.
  24  *
  25  * Contributors:
  26  *   Kai Vehmanen, Nokia
  27  *
  28  * Alternatively, the contents of this file may be used under the terms of the
  29  * the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
  30  * case the provisions of LGPL are applicable instead of those above. If you
  31  * wish to allow use of your version of this file only under the terms of the
  32  * LGPL and not to allow others to use your version of this file under the
  33  * MPL, indicate your decision by deleting the provisions above and replace
  34  * them with the notice and other provisions required by the LGPL. If you do
  35  * not delete the provisions above, a recipient may use your version of this
  36  * file under either the MPL or the LGPL.
  37  */
  38 #ifdef HAVE_CONFIG_H
  39 # include <config.h>
  40 #endif
  41
  42 #include "agent.h"
  43 #include "agent-priv.h" /* for testing purposes */
  44
  45 #include <stdlib.h>
  46 #include <string.h>
  47
  48
  49 static NiceComponentState global_lagent_state = NICE_COMPONENT_STATE_LAST;
  50 static NiceComponentState global_ragent_state = NICE_COMPONENT_STATE_LAST;
  51 static guint global_components_ready = 0;
  52 static guint global_components_ready_exit = 0;
  53 static guint global_components_failed = 0;
  54 static guint global_components_failed_exit = 0;
  55 static GMainLoop *global_mainloop = NULL;
  56 static gboolean global_lagent_gathering_done = FALSE;
  57 static gboolean global_ragent_gathering_done = FALSE;
  58 static gboolean global_lagent_ibr_received = FALSE;
  59 static gboolean global_ragent_ibr_received = FALSE;
  60 static int global_lagent_cands = 0;
  61 static int global_ragent_cands = 0;
  62 static gint global_ragent_read = 0;
  63 static gint global_ragent_read_exit = 0;
  64 static gboolean global_accept_non_data = TRUE;
  65
  66 static void priv_print_global_status (void)
  67 {
  68   g_debug ("\tgathering_done=%d", global_lagent_gathering_done && global_ragent_gathering_done);
  69   g_debug ("\tlstate=%d", global_lagent_state);
  70   g_debug ("\trstate=%d", global_ragent_state);
  71 }
  72
  73 static gboolean timer_cb (gpointer pointer)
  74 {
  75   g_debug ("test-fallback:%s: %p", G_STRFUNC, pointer);
  76
  77   /* signal status via a global variable */
  78
  79   /* note: should not be reached, abort */
  80   g_error ("ERROR: test has got stuck, aborting...");
  81 }
  82
  83 static void cb_nice_recv (NiceAgent *agent, guint stream_id, guint component_id, guint len, gchar *buf, gpointer user_data)
  84 {
  85   g_debug ("test-fallback:%s: %p", G_STRFUNC, user_data);
  86
  87   /* XXX: dear compiler, these are for you: */
  88   (void)agent; (void)stream_id; (void)component_id; (void)buf;
  89
  90   /*
  91    * Lets ignore stun packets that got through
  92    */
  93   if (len != 16 || strncmp ("1234567812345678", buf, 16)) {
  94     if (global_accept_non_data)
  95       return;
  96     else
  97       g_error ("Got non-data packet of lenght %u", len);
  98   }
  99
 100   if ((intptr_t)user_data == 2) {
 101     global_ragent_read += len;
 102
 103     if (global_ragent_read == global_ragent_read_exit)
 104       g_main_loop_quit (global_mainloop);
 105   }
 106 }
 107
 108 static void cb_candidate_gathering_done(NiceAgent *agent, guint stream_id, gpointer data)
 109 {
 110   g_debug ("test-fallback:%s: %p", G_STRFUNC, data);
 111
 112   if ((intptr_t)data == 1)
 113     global_lagent_gathering_done = TRUE;
 114   else if ((intptr_t)data == 2)
 115     global_ragent_gathering_done = TRUE;
 116
 117   if (global_lagent_gathering_done &&
 118       global_ragent_gathering_done)
 119     g_main_loop_quit (global_mainloop);
 120
 121   /* XXX: dear compiler, these are for you: */
 122   (void)agent;
 123 }
 124
 125 static void cb_component_state_changed (NiceAgent *agent, guint stream_id, guint component_id, guint state, gpointer data)
 126 {
 127   g_debug ("test-fallback:%s: %p", __func__, data);
 128
 129   if ((intptr_t)data == 1)
 130     global_lagent_state = state;
 131   else if ((intptr_t)data == 2)
 132     global_ragent_state = state;
 133
 134   if (state == NICE_COMPONENT_STATE_READY)
 135     global_components_ready++;
 136   if (state == NICE_COMPONENT_STATE_FAILED)
 137     global_components_failed++;
 138
 139   g_debug ("test-fallback: READY %u exit at %u.", global_components_ready, global_components_ready_exit);
 140
 141   /* signal status via a global variable */
 142   if (global_components_ready == global_components_ready_exit) {
 143     g_main_loop_quit (global_mainloop);
 144     return;
 145   }
 146
 147   /* signal status via a global variable */
 148   if (global_components_failed == global_components_failed_exit) {
 149     g_main_loop_quit (global_mainloop);
 150     return;
 151   }
 152
 153   /* XXX: dear compiler, these are for you: */
 154   (void)agent; (void)stream_id; (void)data; (void)component_id;
 155 }
 156
 157 static void cb_new_selected_pair(NiceAgent *agent, guint stream_id, guint component_id,
 158                                  gchar *lfoundation, gchar* rfoundation, gpointer data)
 159 {
 160   g_debug ("test-fallback:%s: %p", __func__, data);
 161
 162   if ((intptr_t)data == 1)
 163     ++global_lagent_cands;
 164   else if ((intptr_t)data == 2)
 165     ++global_ragent_cands;
 166
 167   /* XXX: dear compiler, these are for you: */
 168   (void)agent; (void)stream_id; (void)component_id; (void)lfoundation; (void)rfoundation;
 169 }
 170
 171 static void cb_new_candidate(NiceAgent *agent, guint stream_id, guint component_id,
 172                              gchar *foundation, gpointer data)
 173 {
 174   g_debug ("test-fallback:%s: %p", __func__, data);
 175
 176   /* XXX: dear compiler, these are for you: */
 177   (void)agent; (void)stream_id; (void)data; (void)component_id; (void)foundation;
 178 }
 179
 180 static void cb_initial_binding_request_received(NiceAgent *agent, guint stream_id, gpointer data)
 181 {
 182   g_debug ("test-fallback:%s: %p", __func__, data);
 183
 184   if ((intptr_t)data == 1)
 185     global_lagent_ibr_received = TRUE;
 186   else if ((intptr_t)data == 2)
 187     global_ragent_ibr_received = TRUE;
 188
 189   /* XXX: dear compiler, these are for you: */
 190   (void)agent; (void)stream_id; (void)data;
 191 }
 192
 193 static void priv_get_local_addr (NiceAgent *agent, guint stream_id, guint component_id, NiceAddress *dstaddr)
 194 {
 195   GSList *cands, *i;
 196   cands = nice_agent_get_local_candidates(agent, stream_id, component_id);
 197   for (i = cands; i; i = i->next) {
 198     NiceCandidate *cand = i->data;
 199     if (cand) {
 200       g_assert (dstaddr);
 201       *dstaddr = cand->addr;
 202       break;
 203     }
 204   }
 205   for (i = cands; i; i = i->next)
 206     nice_candidate_free ((NiceCandidate *) i->data);
 207   g_slist_free (cands);
 208 }
 209
 210 static int run_fallback_test (NiceAgent *lagent, NiceAgent *ragent, NiceAddress *baseaddr)
 211 {
 212   NiceAddress laddr, raddr, laddr_rtcp, raddr_rtcp;
 213   NiceCandidate cdes;
 214   GSList *cands;
 215   guint ls_id, rs_id;
 216
 217   memset (&cdes, 0, sizeof(NiceCandidate));
 218   cdes.priority = 100000;
 219   strcpy (cdes.foundation, "1");
 220   cdes.type = NICE_CANDIDATE_TYPE_HOST;
 221   cdes.transport = NICE_CANDIDATE_TRANSPORT_UDP;
 222   cdes.base_addr = *baseaddr;
 223
 224   /* step: initialize variables modified by the callbacks */
 225   global_components_ready = 0;
 226   global_components_ready_exit = 4;
 227   global_components_failed = 0;
 228   global_components_failed_exit = 4;
 229   global_lagent_gathering_done = FALSE;
 230   global_ragent_gathering_done = FALSE;
 231   global_lagent_ibr_received =
 232     global_ragent_ibr_received = FALSE;
 233   global_lagent_cands =
 234     global_ragent_cands = 0;
 235   global_ragent_read_exit = -1;
 236
 237   g_object_set (G_OBJECT (lagent), "controlling-mode", TRUE, NULL);
 238   g_object_set (G_OBJECT (ragent), "controlling-mode", FALSE, NULL);
 239
 240   /* step: add one stream, with RTP+RTCP components, to each agent */
 241   ls_id = nice_agent_add_stream (lagent, 2);
 242   rs_id = nice_agent_add_stream (ragent, 2);
 243   g_assert (ls_id > 0);
 244   g_assert (rs_id > 0);
 245
 246   nice_agent_gather_candidates (lagent, ls_id);
 247   nice_agent_gather_candidates (ragent, rs_id);
 248
 249   /* step: attach to mainloop (needed to register the fds) */
 250   nice_agent_attach_recv (lagent, ls_id, NICE_COMPONENT_TYPE_RTP,
 251       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)1);
 252   nice_agent_attach_recv (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP,
 253       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)1);
 254   nice_agent_attach_recv (ragent, rs_id, NICE_COMPONENT_TYPE_RTP,
 255       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)2);
 256   nice_agent_attach_recv (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP,
 257       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)2);
 258
 259   /* step: run mainloop until local candidates are ready
 260    *       (see timer_cb() above) */
 261   if (global_lagent_gathering_done != TRUE ||
 262       global_ragent_gathering_done != TRUE) {
 263     g_debug ("test-fallback: Added streams, running mainloop until 'candidate-gathering-done'...");
 264     g_main_loop_run (global_mainloop);
 265     g_assert (global_lagent_gathering_done == TRUE);
 266     g_assert (global_ragent_gathering_done == TRUE);
 267   }
 268
 269   /* step: find out the local candidates of each agent */
 270
 271   priv_get_local_addr (ragent, rs_id, NICE_COMPONENT_TYPE_RTP, &raddr);
 272   g_debug ("test-fallback: local RTP port R %u",
 273            nice_address_get_port (&raddr));
 274
 275   priv_get_local_addr (lagent, ls_id, NICE_COMPONENT_TYPE_RTP, &laddr);
 276   g_debug ("test-fallback: local RTP port L %u",
 277            nice_address_get_port (&laddr));
 278
 279   priv_get_local_addr (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP, &raddr_rtcp);
 280   g_debug ("test-fallback: local RTCP port R %u",
 281            nice_address_get_port (&raddr_rtcp));
 282
 283   priv_get_local_addr (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP, &laddr_rtcp);
 284   g_debug ("test-fallback: local RTCP port L %u",
 285            nice_address_get_port (&laddr_rtcp));
 286
 287   /* step: exchange candidate information but not the credentials */
 288
 289   cands = g_slist_append (NULL, &cdes);
 290   cdes.component_id = NICE_COMPONENT_TYPE_RTP;
 291   cdes.addr = raddr;
 292   nice_agent_set_remote_candidates (lagent, ls_id, NICE_COMPONENT_TYPE_RTP, cands);
 293   cdes.addr = laddr;
 294   nice_agent_set_remote_candidates (ragent, rs_id, NICE_COMPONENT_TYPE_RTP, cands);
 295   cdes.component_id = NICE_COMPONENT_TYPE_RTCP;
 296   cdes.addr = raddr_rtcp;
 297   nice_agent_set_remote_candidates (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP, cands);
 298   cdes.addr = laddr_rtcp;
 299   nice_agent_set_remote_candidates (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP, cands);
 300
 301   /* step: fall back to non-ICE mode on both sides */
 302   g_assert (nice_agent_set_selected_pair (lagent, ls_id, NICE_COMPONENT_TYPE_RTP, "1", "1") == TRUE);
 303   g_assert (nice_agent_set_selected_pair (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP, "1", "1") == TRUE);
 304   g_assert (nice_agent_set_selected_pair (ragent, rs_id, NICE_COMPONENT_TYPE_RTP, "1", "1") == TRUE);
 305   g_assert (nice_agent_set_selected_pair (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP, "1", "1") == TRUE);
 306
 307   g_debug ("test-fallback: Requested for fallback, running mainloop until component state change is completed...");
 308
 309   /* step: run the mainloop until connectivity checks succeed
 310    *       (see timer_cb() above) */
 311   if (global_components_ready < global_components_ready_exit)
 312     g_main_loop_run (global_mainloop);
 313
 314   /* note: verify that agents are in correct state */
 315   g_assert (global_lagent_state == NICE_COMPONENT_STATE_READY);
 316   g_assert (global_ragent_state == NICE_COMPONENT_STATE_READY);
 317
 318   /* step: next send a packet -> should work even if no ICE processing
 319    *       has been done */
 320
 321   g_debug ("test-fallback: Sent a payload packet, run mainloop until packet received.");
 322
 323   /* step: send a new test packet from L ot R */
 324   global_ragent_read = 0;
 325   g_assert (nice_agent_send (lagent, ls_id, 1, 16, "1234567812345678") == 16);
 326   global_ragent_read_exit = 16;
 327   g_main_loop_run (global_mainloop);
 328
 329   /* note: verify that payload was succesfully received */
 330   g_assert (global_ragent_read == 16);
 331
 332   g_debug ("test-fallback: Ran mainloop, removing streams...");
 333
 334   /* step: clean up resources and exit */
 335
 336   g_slist_free (cands);
 337   nice_agent_remove_stream (lagent, ls_id);
 338   nice_agent_remove_stream (ragent, rs_id);
 339
 340   g_debug ("test-fallback: test COMPLETED");
 341
 342   return 0;
 343 }
 344
 345
 346 static int run_safe_fallback_test (NiceAgent *lagent, NiceAgent *ragent, NiceAddress *baseaddr)
 347 {
 348   NiceAddress laddr, raddr, laddr_rtcp, raddr_rtcp;
 349   NiceCandidate cdes;
 350   guint ls_id, rs_id;
 351
 352   memset (&cdes, 0, sizeof(NiceCandidate));
 353   cdes.priority = 100000;
 354   strcpy (cdes.foundation, "1");
 355   cdes.type = NICE_CANDIDATE_TYPE_HOST;
 356   cdes.transport = NICE_CANDIDATE_TRANSPORT_UDP;
 357   cdes.base_addr = *baseaddr;
 358
 359   /* step: initialize variables modified by the callbacks */
 360   global_components_ready = 0;
 361   global_components_ready_exit = 4;
 362   global_components_failed = 0;
 363   global_components_failed_exit = 4;
 364   global_lagent_gathering_done = FALSE;
 365   global_ragent_gathering_done = FALSE;
 366   global_lagent_ibr_received =
 367     global_ragent_ibr_received = FALSE;
 368   global_lagent_cands =
 369     global_ragent_cands = 0;
 370   global_ragent_read_exit = -1;
 371   global_accept_non_data = FALSE;
 372
 373   g_object_set (G_OBJECT (lagent), "controlling-mode", TRUE, NULL);
 374   g_object_set (G_OBJECT (ragent), "controlling-mode", FALSE, NULL);
 375
 376   /* step: add one stream, with RTP+RTCP components, to each agent */
 377   ls_id = nice_agent_add_stream (lagent, 2);
 378   rs_id = nice_agent_add_stream (ragent, 2);
 379   g_assert (ls_id > 0);
 380   g_assert (rs_id > 0);
 381
 382   nice_agent_gather_candidates (lagent, ls_id);
 383   nice_agent_gather_candidates (ragent, rs_id);
 384
 385   /* step: attach to mainloop (needed to register the fds) */
 386   nice_agent_attach_recv (lagent, ls_id, NICE_COMPONENT_TYPE_RTP,
 387       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)1);
 388   nice_agent_attach_recv (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP,
 389       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)1);
 390   nice_agent_attach_recv (ragent, rs_id, NICE_COMPONENT_TYPE_RTP,
 391       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)2);
 392   nice_agent_attach_recv (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP,
 393       g_main_loop_get_context (global_mainloop), cb_nice_recv, (gpointer)2);
 394
 395   /* step: run mainloop until local candidates are ready
 396    *       (see timer_cb() above) */
 397   if (global_lagent_gathering_done != TRUE ||
 398       global_ragent_gathering_done != TRUE) {
 399     g_debug ("test-fallback: Added streams, running mainloop until 'candidate-gathering-done'...");
 400     g_main_loop_run (global_mainloop);
 401     g_assert (global_lagent_gathering_done == TRUE);
 402     g_assert (global_ragent_gathering_done == TRUE);
 403   }
 404
 405   /* step: find out the local candidates of each agent */
 406
 407   priv_get_local_addr (ragent, rs_id, NICE_COMPONENT_TYPE_RTP, &raddr);
 408   g_debug ("test-fallback: local RTP port R %u",
 409            nice_address_get_port (&raddr));
 410
 411   priv_get_local_addr (lagent, ls_id, NICE_COMPONENT_TYPE_RTP, &laddr);
 412   g_debug ("test-fallback: local RTP port L %u",
 413            nice_address_get_port (&laddr));
 414
 415   priv_get_local_addr (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP, &raddr_rtcp);
 416   g_debug ("test-fallback: local RTCP port R %u",
 417            nice_address_get_port (&raddr_rtcp));
 418
 419   priv_get_local_addr (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP, &laddr_rtcp);
 420   g_debug ("test-fallback: local RTCP port L %u",
 421            nice_address_get_port (&laddr_rtcp));
 422
 423   /* step: exchange candidate information but not the credentials */
 424
 425   cdes.component_id = NICE_COMPONENT_TYPE_RTP;
 426   cdes.addr = raddr;
 427   g_assert (nice_agent_set_selected_remote_candidate (lagent, ls_id, NICE_COMPONENT_TYPE_RTP, &cdes));
 428
 429   cdes.addr = laddr;
 430   g_assert (nice_agent_set_selected_remote_candidate (ragent, rs_id, NICE_COMPONENT_TYPE_RTP, &cdes));
 431
 432   cdes.component_id = NICE_COMPONENT_TYPE_RTCP;
 433   cdes.addr = raddr_rtcp;
 434   g_assert (nice_agent_set_selected_remote_candidate (lagent, ls_id, NICE_COMPONENT_TYPE_RTCP, &cdes));
 435
 436   cdes.addr = laddr_rtcp;
 437   g_assert (nice_agent_set_selected_remote_candidate (ragent, rs_id, NICE_COMPONENT_TYPE_RTCP, &cdes));
 438
 439   g_debug ("test-fallback: Requested for fallback, running mainloop until component state change is completed...");
 440
 441   /* step: run the mainloop until connectivity checks succeed
 442    *       (see timer_cb() above) */
 443   if (global_components_ready < global_components_ready_exit)
 444     g_main_loop_run (global_mainloop);
 445
 446   /* note: verify that agents are in correct state */
 447   g_assert (global_lagent_state == NICE_COMPONENT_STATE_READY);
 448   g_assert (global_ragent_state == NICE_COMPONENT_STATE_READY);
 449
 450   /* step: next send a packet -> should work even if no ICE processing
 451    *       has been done */
 452
 453   g_debug ("test-fallback: Sent a payload packet, run mainloop until packet received.");
 454
 455   /* step: send a new test packet from L ot R */
 456   global_ragent_read = 0;
 457   g_assert (nice_agent_send (lagent, ls_id, 1, 16, "1234567812345678") == 16);
 458   global_ragent_read_exit = 16;
 459   g_main_loop_run (global_mainloop);
 460
 461   /* note: verify that payload was succesfully received */
 462   g_assert (global_ragent_read == 16);
 463
 464   g_debug ("test-fallback: Ran mainloop, removing streams...");
 465
 466   /* step: clean up resources and exit */
 467
 468   nice_agent_remove_stream (lagent, ls_id);
 469   nice_agent_remove_stream (ragent, rs_id);
 470
 471   g_debug ("test-fallback: test COMPLETED");
 472
 473   return 0;
 474 }
 475
 476 int main (void)
 477 {
 478   NiceAgent *lagent, *ragent;      /* agent's L and R */
 479   NiceAddress baseaddr;
 480   int result;
 481   guint timer_id;
 482   const char *stun_server = NULL, *stun_server_port = NULL;
 483
 484   g_type_init ();
 485   g_thread_init (NULL);
 486   global_mainloop = g_main_loop_new (NULL, FALSE);
 487
 488   /* Note: impl limits ...
 489    * - no multi-stream support
 490    * - no IPv6 support
 491    */
 492
 493   /* step: create the agents L and R */
 494   lagent = nice_agent_new (g_main_loop_get_context (global_mainloop), NICE_COMPATIBILITY_DRAFT19);
 495   ragent = nice_agent_new (g_main_loop_get_context (global_mainloop), NICE_COMPATIBILITY_DRAFT19);
 496
 497
 498
 499   /* step: add a timer to catch state changes triggered by signals */
 500   timer_id = g_timeout_add (30000, timer_cb, NULL);
 501
 502   /* step: specify which local interface to use */
 503   if (!nice_address_set_from_string (&baseaddr, "127.0.0.1"))
 504     g_assert_not_reached ();
 505   nice_agent_add_local_address (lagent, &baseaddr);
 506   nice_agent_add_local_address (ragent, &baseaddr);
 507
 508   g_signal_connect (G_OBJECT (lagent), "candidate-gathering-done",
 509                     G_CALLBACK (cb_candidate_gathering_done), (gpointer)1);
 510   g_signal_connect (G_OBJECT (ragent), "candidate-gathering-done",
 511                     G_CALLBACK (cb_candidate_gathering_done), (gpointer)2);
 512   g_signal_connect (G_OBJECT (lagent), "component-state-changed",
 513                     G_CALLBACK (cb_component_state_changed), (gpointer)1);
 514   g_signal_connect (G_OBJECT (ragent), "component-state-changed",
 515                     G_CALLBACK (cb_component_state_changed), (gpointer)2);
 516   g_signal_connect (G_OBJECT (lagent), "new-selected-pair",
 517                     G_CALLBACK (cb_new_selected_pair), (gpointer)1);
 518   g_signal_connect (G_OBJECT (ragent), "new-selected-pair",
 519                     G_CALLBACK (cb_new_selected_pair), (gpointer)2);
 520   g_signal_connect (G_OBJECT (lagent), "new-candidate",
 521                     G_CALLBACK (cb_new_candidate), (gpointer)1);
 522   g_signal_connect (G_OBJECT (ragent), "new-candidate",
 523                     G_CALLBACK (cb_new_candidate), (gpointer)2);
 524   g_signal_connect (G_OBJECT (lagent), "initial-binding-request-received",
 525                     G_CALLBACK (cb_initial_binding_request_received), (gpointer)1);
 526   g_signal_connect (G_OBJECT (ragent), "initial-binding-request-received",
 527                     G_CALLBACK (cb_initial_binding_request_received), (gpointer)2);
 528
 529   stun_server = getenv ("NICE_STUN_SERVER");
 530   stun_server_port = getenv ("NICE_STUN_SERVER_PORT");
 531   if (stun_server) {
 532     g_object_set (G_OBJECT (lagent), "stun-server", stun_server,  NULL);
 533     g_object_set (G_OBJECT (lagent), "stun-server-port", atoi (stun_server_port),  NULL);
 534     g_object_set (G_OBJECT (ragent), "stun-server", stun_server,  NULL);
 535     g_object_set (G_OBJECT (ragent), "stun-server-port", atoi (stun_server_port),  NULL);
 536   }
 537
 538   /* step: run test the first time */
 539   g_debug ("test-fallback: TEST STARTS / fallback test");
 540   result = run_fallback_test (lagent, ragent, &baseaddr);
 541   priv_print_global_status ();
 542   g_assert (result == 0);
 543   g_assert (global_lagent_state == NICE_COMPONENT_STATE_READY);
 544   g_assert (global_ragent_state == NICE_COMPONENT_STATE_READY);
 545
 546   /* step: run the safe test without sending any stnu */
 547   g_debug ("test-fallback: TEST STARTS / safe fallback test");
 548   result = run_safe_fallback_test (lagent, ragent, &baseaddr);
 549   priv_print_global_status ();
 550   g_assert (result == 0);
 551   g_assert (global_lagent_state == NICE_COMPONENT_STATE_READY);
 552   g_assert (global_ragent_state == NICE_COMPONENT_STATE_READY);
 553
 554   g_object_unref (lagent);
 555   g_object_unref (ragent);
 556
 557   g_main_loop_unref (global_mainloop);
 558   global_mainloop = NULL;
 559
 560   g_source_remove (timer_id);
 561
 562   return result;
 563 }