test_100rel.c 82.1 KB
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/*
 * This file is part of the Sofia-SIP package
 *
 * Copyright (C) 2005 Nokia Corporation.
 *
 * Contact: Pekka Pessi <pekka.pessi@nokia.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

/**@CFILE test_nua_100rel.c
 * @brief NUA-10 tests: early session, PRACK, UPDATE, precondition.
 *
 * @author Pekka Pessi <Pekka.Pessi@nokia.com>
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 * @author Martti Mela <Martti.Mela@nokia.com>
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 *
 * @date Created: Wed Aug 17 12:12:12 EEST 2005 ppessi
 */

#include "config.h"

#include "test_nua.h"
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#include <sofia-sip/auth_common.h>
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#include <sofia-sip/su_tag_class.h>

#if HAVE_FUNC
#elif HAVE_FUNCTION
#define __func__ __FUNCTION__
#else
#define __func__ "test_call_hold"
#endif

/* ======================================================================== */

/*
 X  accept_pracked    ep
 |-------INVITE------>|
 |        (sdp)       |
 |                    |
 |<----100 Trying-----|
 |                    |
 |<-------180---------|
 |       (sdp)        |
 |-------PRACK------->|
 |<-------200---------|
 |                    |
 |<------200 OK-------|
 |--------ACK-------->|
 |                    |
*/
int accept_pracked(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (event) {
  case nua_i_prack:
    if (200 <= status && status < 300) {
      RESPOND(ep, call, nh, SIP_200_OK, TAG_END());
      ep->next_condition = until_ready;
    }
  default:
    break;
  }

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_180_RINGING,
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

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int accept_pracked2(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_180_RINGING,
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
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    RESPOND(ep, call, nh, SIP_200_OK,
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	    NUTAG_INCLUDE_EXTRA_SDP(1),
	    TAG_END());
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    return 0;
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  case nua_callstate_ready:
    return 1;
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  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}


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int test_180rel(struct context *ctx)
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{
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  BEGIN();
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  struct endpoint *a = &ctx->a,  *b = &ctx->b;
  struct call *a_call = a->call, *b_call = b->call;
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  struct event *e, *ep, *ei;
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  sip_t *sip;
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  if (print_headings)
    printf("TEST NUA-10.1.1: Call with 100rel and 180\n");
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/* Test for 100rel:

   A			B
   |-------INVITE------>|
   |<----100 Trying-----|
   |			|
   |<-------180---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
   |<------200 OK-------|
   |--------ACK-------->|
   |			|
   |<-------BYE---------|
   |-------200 OK-------|
   |			|
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*/

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  a_call->sdp = "m=audio 5008 RTP/AVP 8";
  b_call->sdp = "m=audio 5010 RTP/AVP 0 8";
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  nua_set_params(ctx->a.nua,
		 NUTAG_EARLY_MEDIA(1),
		 TAG_END());
  run_a_until(ctx, nua_r_set_params, until_final_response);
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  nua_set_params(ctx->b.nua,
		 NUTAG_EARLY_MEDIA(1),
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		 NUTAG_SESSION_TIMER(180),
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		 TAG_END());
  run_b_until(ctx, nua_r_set_params, until_final_response);
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  TEST_1(a_call->nh = nua_handle(a->nua, a_call, SIPTAG_TO(b->to), TAG_END()));
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  INVITE(a, a_call, a_call->nh,
	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
	 SOATAG_USER_SDP_STR(a_call->sdp),
	 TAG_END());
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  run_ab_until(ctx, -1, until_ready, -1, accept_pracked2);
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  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state, nua_r_prack
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 180);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

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  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_prack);
  if (!ep) {
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    run_a_until(ctx, -1, save_until_final_response);
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    ep = event_by_type(e->next, nua_r_prack);
  }

  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_prack);
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  TEST(e->data->e_status, 200);

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  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
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  TEST(e->data->e_status, 200);
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  TEST_1(sip = sip_object(e->data->e_msg));
  TEST_1(sip->sip_content_type);
  TEST_S(sip->sip_content_type->c_type, "application/sdp");
  TEST_1(sip->sip_payload);
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  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
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  TEST_1(!e->next || !ep->next);
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  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state
   EARLY -(S3b)-> COMPLETED: nua_respond(), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */
  TEST_1(is_offer_recv(e->data->e_tags));

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  /* 180 is PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Respond with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
    printf("TEST NUA-10.1.1: PASSED\n");

  if (print_headings)
    printf("TEST NUA-10.1.2: terminate call\n");

  BYE(b, b_call, b_call->nh, TAG_END());
  run_ab_until(ctx, -1, until_terminated, -1, until_terminated);

  /* B transitions:
   READY --(T2)--> TERMINATING: nua_bye()
   TERMINATING --(T3)--> TERMINATED: nua_r_bye, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_r_bye);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  /* A: READY -(T1)-> TERMINATED: nua_i_bye, nua_i_state */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_bye);
  TEST(e->data->e_status, 200);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, a->events);

  nua_handle_destroy(a_call->nh), a_call->nh = NULL;
  nua_handle_destroy(b_call->nh), b_call->nh = NULL;

  if (print_headings)
    printf("TEST NUA-10.1.2: PASSED\n");
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  END();
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}

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/*
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 X      INVITE
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 |                    |
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 |-------INVITE------>|
 |<--------200--------|
 |---------ACK------->|
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*/
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int authenticate_until_ready(CONDITION_PARAMS)
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{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

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  if (status == 401 || status == 407) {
    AUTHENTICATE(ep, call, nh,
		 NUTAG_AUTH("Digest:\"test-proxy\":charlie:secret"),
		 TAG_END());
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  }

  switch (callstate(tags)) {
  case nua_callstate_ready:
    return 1;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

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/** Test authentication for PRACK */
int test_prack_auth(struct context *ctx)
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{
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  if (!ctx->proxy_tests)
    return 0;

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  BEGIN();

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  struct endpoint *c = &ctx->c,  *b = &ctx->b;
  struct call *c_call = c->call, *b_call = b->call;
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  struct event *e, *ep, *ei;
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  sip_t *sip;
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  sip_proxy_authenticate_t *au;
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  if (print_headings)
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    printf("TEST NUA-10.1.3: Call with 100rel, PRACK is challenged\n");
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/* Test for authentication during 100rel
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   C			B
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   |-------INVITE--\    |
   |<-------407----/    |
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   |			|
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   |-------INVITE------>|
   |<----100 Trying-----|
   |			|
   |<-------180---------|
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   |-------PRACK---\    |
   |<-------407----/    |
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   |-------PRACK------->|
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   |<-------200---------|
   |			|
   |<------200 OK-------|
   |--------ACK-------->|
   |			|
   |<-------BYE---------|
   |-------200 OK-------|
   |			|

*/

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  c_call->sdp = "m=audio 5008 RTP/AVP 8";
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  b_call->sdp = "m=audio 5010 RTP/AVP 0 8";

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  nua_set_params(ctx->c.nua,
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		 NUTAG_EARLY_MEDIA(1),
		 TAG_END());
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  run_c_until(ctx, nua_r_set_params, until_final_response);
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  nua_set_params(ctx->b.nua,
		 NUTAG_EARLY_MEDIA(1),
		 TAG_END());
  run_b_until(ctx, nua_r_set_params, until_final_response);

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  TEST_1(c_call->nh = nua_handle(c->nua, c_call, SIPTAG_TO(b->to), TAG_END()));
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  INVITE(c, c_call, c_call->nh,
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	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
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	 SIPTAG_FROM(c->to),
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	 SOATAG_USER_SDP_STR(c_call->sdp),
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	 TAG_END());

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  run_bc_until(ctx, -1, accept_pracked, -1, authenticate_until_ready);
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  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state, nua_r_prack
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
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  TEST_1(e = c->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 407);
  TEST_1(sip = sip_object(e->data->e_msg));
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  TEST_1(au = sip->sip_proxy_authenticate);
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  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
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  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 180);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

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  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_prack);
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  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_prack);
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  if (e->data->e_status == 100 || e->data->e_status == 407) {
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    /* The final response to PRACK may be received after ACK is sent */
    if (!event_by_type(e->next, nua_r_prack))
      run_bc_until(ctx, -1, save_events, -1, save_until_final_response);
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    TEST_1(e = ep = event_by_type(e->next, nua_r_prack));
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  }
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  TEST_E(e->data->e_event, nua_r_prack);
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  TEST(e->data->e_status, 200);
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  TEST_1(sip = sip_object(e->data->e_msg));
  TEST_1(sip->sip_from->a_url->url_user);
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  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
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  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
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  TEST_1(!e->next || !ep->next);
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  free_events_in_list(ctx, c->events);
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  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state
   EARLY -(S3b)-> COMPLETED: nua_respond(), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */
  TEST_1(is_offer_recv(e->data->e_tags));

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  /* 180 is PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Respond with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
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    printf("TEST NUA-10.1.3: PASSED\n");
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  if (print_headings)
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    printf("TEST NUA-10.1.4: terminate call\n");
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  BYE(b, b_call, b_call->nh, TAG_END());
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  run_bc_until(ctx, -1, until_terminated, -1, until_terminated);
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  /* B transitions:
   READY --(T2)--> TERMINATING: nua_bye()
   TERMINATING --(T3)--> TERMINATED: nua_r_bye, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_r_bye);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

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  /* C: READY -(T1)-> TERMINATED: nua_i_bye, nua_i_state */
  TEST_1(e = c->events->head); TEST_E(e->data->e_event, nua_i_bye);
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  TEST(e->data->e_status, 200);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
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  free_events_in_list(ctx, c->events);
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  nua_handle_destroy(c_call->nh), c_call->nh = NULL;
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  nua_handle_destroy(b_call->nh), b_call->nh = NULL;

  if (print_headings)
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    printf("TEST NUA-10.1.4: PASSED\n");
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  END();
}
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/*
 X  ringing_pracked    ep
 |-------INVITE------>|
 |<----100 Trying-----|
 |                    |
 |<-------183---------|
 |-------PRACK------->|
 |<-------200---------|
 |                    |
 |<-------180---------|
 |-------PRACK------->|
 |<-------200---------|
 |                    |
 |<------200 OK-------|
 |--------ACK-------->|
 |                    |
*/
int ringing_pracked(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (event) {
  case nua_i_prack:
    if (200 <= status && status < 300) {
      RESPOND(ep, call, nh, SIP_180_RINGING, TAG_END());
      ep->next_condition = accept_pracked;
    }
  default:
    break;
  }

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_183_SESSION_PROGRESS,
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

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int respond_483_to_prack(CONDITION_PARAMS);
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static int prack_until_terminated(CONDITION_PARAMS);
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int test_183rel(struct context *ctx)
{
  BEGIN();

  struct endpoint *a = &ctx->a,  *b = &ctx->b;
  struct call *a_call = a->call, *b_call = b->call;
564
  struct event *e, *ei, *ep;
565 566

  if (print_headings)
567
    printf("TEST NUA-10.2.1: Call with 100rel, 183 and 180\n");
568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595

  TEST_1(a_call->nh = nua_handle(a->nua, a_call, SIPTAG_TO(b->to), TAG_END()));

  INVITE(a, a_call, a_call->nh,
	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
	 SOATAG_USER_SDP_STR(a_call->sdp),
	 TAG_END());

  run_ab_until(ctx, -1, until_ready, -1, ringing_pracked);

  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state, nua_r_prack
     PROCEEDING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state, nua_r_prack
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 183);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

596
  TEST_1(e = e->next);
597

598 599 600 601 602 603 604
  ep = e->data->e_event == nua_r_prack ? e : NULL;

  if (ep) {
    TEST(ep->data->e_status, 200); TEST_1(e = e->next);
  }

  TEST_E(e->data->e_event, nua_r_invite);
605 606 607 608 609
  TEST(e->data->e_status, 180);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(!is_offer_answer_done(e->data->e_tags));
610

611 612 613 614
  if (!ep) {
    TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_prack);
    TEST(e->data->e_status, 200);
  }
615

616 617 618
  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_prack);
  if (!ep) {
619
    run_a_until(ctx, -1, save_until_final_response);
620 621
    ep = event_by_type(e->next, nua_r_prack);
  }
622

623
  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_prack);
624 625
  TEST(e->data->e_status, 200);

626
  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
627 628 629 630 631
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
632
  TEST_1(!e->next || !ep->next);
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681
  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state
   EARLY -(S3b)-> COMPLETED: nua_respond(), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */
  TEST_1(is_offer_recv(e->data->e_tags));

  /* Responded with 183 Session Progress */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 183);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  /* 183 is PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 180);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  /* 180 is PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Respond with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 200);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
682
    printf("TEST NUA-10.2.1: PASSED\n");
683

684
  /* Test for graceful termination by client because 483 sent to PRACK */
685
  if (print_headings)
686
    printf("TEST NUA-10.2.2: graceful termination because PRACK fails\n");
687

688
  nua_set_hparams(a_call->nh, NUTAG_APPL_METHOD("PRACK"), TAG_END());
689 690
  nua_set_hparams(b_call->nh, NUTAG_APPL_METHOD("PRACK"),
		  NUTAG_AUTOANSWER(0), TAG_END());
691
  run_ab_until(ctx, nua_r_set_params, NULL, nua_r_set_params, NULL);
692

693 694
  INVITE(a, a_call, a_call->nh, TAG_END());

695
  run_ab_until(ctx, -1, prack_until_terminated, -1, respond_483_to_prack);
696 697 698

  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
699
     CALLING -(C2)-> TERMINATING: nua_r_invite, nua_i_state,
700 701
                                  nua_r_prack, nua_i_state
     TERMINATING -(T1)-> TERMINATED: nua_r_invite, nua_i_state
702
  */
703 704 705 706 707 708 709
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 183);

710
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
711 712 713 714 715 716 717 718 719 720 721
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_prack);
  TEST(e->data->e_status, 483);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminating);

  {
722
    int bye = 1, cancel = 1, invite = 1, state = 1;
723

724
    while (bye || cancel || invite || state) {
725
      TEST_1(e = e->next);
726 727 728 729
      if (e->data->e_event == nua_r_bye) {
	TEST_E(e->data->e_event, nua_r_bye);
	TEST(e->data->e_status, 200);
	bye = 0;
730
	break;
731 732 733 734 735 736 737 738 739 740 741
      }
      else if (e->data->e_event == nua_r_invite) {
	TEST_E(e->data->e_event, nua_r_invite);
	TEST(e->data->e_status, 487);
	invite = 0;
      }
      else if (e->data->e_event == nua_r_cancel) {
	TEST_E(e->data->e_event, nua_r_cancel);
	TEST_1(e->data->e_status == 200 || e->data->e_status == 481);
	cancel = 0;
      }
742 743 744 745 746 747 748 749 750 751 752
      else if (e->data->e_event == nua_i_state) {
	TEST_E(e->data->e_event, nua_i_state);
	TEST(callstate(e->data->e_tags), nua_callstate_terminated);
	state  = 0;
      }
    }
    if (e->next) {
      /* 2nd terminated? */
      TEST_1(e = e->next);
      TEST_E(e->data->e_event, nua_i_state);
      TEST(callstate(e->data->e_tags), nua_callstate_terminated);
753 754
    }
  }
755

756 757
  TEST_1(!e->next);

758 759 760 761 762 763 764 765 766 767
  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state, nua_respond(to PRACK)
   EARLY -(S3b)-> TERMINATED: nua_i_bye, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
768
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
769 770 771 772 773 774 775 776 777 778 779 780
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */
  TEST_1(is_offer_recv(e->data->e_tags));

  /* Responded with 183 Session Progress */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 183);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  /* 183 is PRACKed, PRACK is responded with 483 */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);

781 782 783
  /* Client terminates the call
     - we may (it is received before BYE) or may not (received after BYE)
       get CANCEL request
784 785 786 787 788 789 790 791 792 793 794 795
  */
  TEST_1(e = e->next);
  if (e->data->e_event == nua_i_cancel) {
    TEST_E(e->data->e_event, nua_i_cancel);
    TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
    TEST(callstate(e->data->e_tags), nua_callstate_ready);
    TEST_1(e = e->next);
  }

  TEST_E(e->data->e_event, nua_i_bye);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated);
796
  TEST_1(!e->next);
797 798

  free_events_in_list(ctx, b->events);
799 800 801 802 803

  nua_handle_destroy(a_call->nh), a_call->nh = NULL;
  nua_handle_destroy(b_call->nh), b_call->nh = NULL;

  if (print_headings)
804
    printf("TEST NUA-10.2.2: PASSED\n");
805

806 807 808
  END();
}

809
static int prack_until_terminated(CONDITION_PARAMS)
810
{
811
  static int terminated, bye_responded, invite_responded, cancel_responded;
812

813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
  if (!check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  if (event == nua_r_invite && 100 < status && status < 200 &&
      sip_has_feature(sip->sip_require, "100rel")) {
    sip_rack_t rack[1];

    sip_rack_init(rack);
    rack->ra_response = sip->sip_rseq->rs_response;
    rack->ra_cseq = sip->sip_cseq->cs_seq;
    rack->ra_method = sip->sip_cseq->cs_method;
    rack->ra_method_name = sip->sip_cseq->cs_method_name;

    nua_prack(nh, SIPTAG_RACK(rack), TAG_END());
  }

831 832 833 834 835 836
  if (event == nua_i_state && callstate(tags) == nua_callstate_terminated)
    terminated = 1;

  if (event == nua_r_bye && status >= 200)
    bye_responded = 1;

837 838 839 840 841 842 843
  if (event == nua_r_invite && status >= 200)
    invite_responded = 1;

  if (event == nua_r_cancel && status >= 200)
    cancel_responded = 1;

  return terminated && bye_responded && invite_responded && cancel_responded;
844 845
}

846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878
int respond_483_to_prack(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  switch (event) {
  case nua_i_prack:
    if (status <= 200) {
      RESPOND(ep, call, nh, 483, "Foo",
	      NUTAG_WITH_THIS(nua),
	      TAG_END());
    }
  default:
    break;
  }

  save_event_in_list(ctx, event, ep, call);

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_183_SESSION_PROGRESS,
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950
/*
 X  ringing_updated   ep
 |-------INVITE------>|
 |       (sdp)        |
 |<----100 Trying-----|
 |                    |
 |<-------183---------|
 |       (sdp)        |
 |-------PRACK------->|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
 |-------UPDATE------>|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
<using  acccept_pracked>
 |                    |
 |<-------180---------|
 |-------PRACK------->|
 |<-------200---------|
 |                    |
 |<------200 OK-------|
 |--------ACK-------->|
 |                    |
*/
int ringing_updated(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (event) {
  case nua_i_update:
    if (200 <= status && status < 300) {
      RESPOND(ep, call, nh, SIP_180_RINGING, TAG_END());
      ep->next_condition = accept_pracked;
    }
    return 0;
  default:
    break;
  }

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_183_SESSION_PROGRESS,
	    SIPTAG_REQUIRE_STR("100rel"),
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_early:
    return 0;
  case nua_callstate_ready:
    return 1;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

int test_preconditions(struct context *ctx)
{
  BEGIN();

  struct endpoint *a = &ctx->a,  *b = &ctx->b;
  struct call *a_call = a->call, *b_call = b->call;
951
  struct event *e, *ep, *ei;
952
  sip_t *sip;
953 954

  if (print_headings)
955
    printf("TEST NUA-10.3.1: Call with 100rel and preconditions\n");
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011

/* Test for precondition:

   A			B
   |-------INVITE------>|
   |<----100 Trying-----|
   |			|
   |<-------183---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
   |-------UPDATE------>|
   |<-------200---------|
   |			|
   |<-------180---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
   |<------200 OK-------|
   |--------ACK-------->|
   |			|
   |<-------BYE---------|
   |-------200 OK-------|
   |			|

*/

  a_call->sdp = "m=audio 5008 RTP/AVP 8";
  b_call->sdp = "m=audio 5010 RTP/AVP 0 8";

  nua_set_params(ctx->a.nua,
		 NUTAG_EARLY_MEDIA(1),
		 SIPTAG_SUPPORTED_STR("100rel, precondition"),
		 TAG_END());
  run_a_until(ctx, nua_r_set_params, until_final_response);

  nua_set_params(ctx->b.nua,
		 NUTAG_EARLY_MEDIA(0),
		 SIPTAG_SUPPORTED_STR("100rel, precondition, timer"),
		 TAG_END());
  run_b_until(ctx, nua_r_set_params, until_final_response);

  TEST_1(a_call->nh = nua_handle(a->nua, a_call, SIPTAG_TO(b->to), TAG_END()));

  INVITE(a, a_call, a_call->nh,
	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
	 SOATAG_USER_SDP_STR(a_call->sdp),
	 SIPTAG_SUPPORTED_STR("100rel"),
	 SIPTAG_REQUIRE_STR("precondition"),
	 TAG_END());

  run_ab_until(ctx, -1, until_ready, -1, ringing_updated);

  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state
1012 1013
     PROCEEDING --> PROCEEDING: nua_r_prack, nua_i_state
     PROCEEDING --> PROCEEDING: nua_r_update, nua_i_state
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 183);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_prack);
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(!is_answer_recv(e->data->e_tags));
  TEST_1(is_offer_sent(e->data->e_tags));

1041 1042 1043 1044
  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_update);

  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_update);
1045
  TEST(e->data->e_status, 200);
1046 1047
  TEST_1(sip = sip_object(e->data->e_msg));
  TEST_1(sip->sip_session_expires);
1048 1049 1050 1051 1052 1053

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

1054
  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
1055 1056 1057 1058 1059
  TEST(e->data->e_status, 180);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding); /* PROCEEDING */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

1060 1061 1062 1063 1064 1065
  if (e == ep)			/* invite was responded before update */
    e = ep->next->next;

  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_prack);
  if (!ep) {
1066
    run_a_until(ctx, -1, save_until_final_response);
1067 1068 1069 1070
    ep = event_by_type(e->next, nua_r_prack);
  }

  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_prack);
1071 1072 1073
  TEST(e->data->e_status, 200);
  /* Does not have effect on call state */

1074
  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
1075 1076
  TEST(e->data->e_status, 200);
  TEST_1(sip = sip_object(e->data->e_msg));
1077 1078 1079 1080 1081
  if (ctx->proxy_tests) {
    TEST_1(sip->sip_session_expires);
    TEST_S(sip->sip_session_expires->x_refresher, "uas");
    TEST_1(!sip_has_supported(sip->sip_require, "timer"));
  }
1082 1083 1084 1085

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
1086
  TEST_1(!e->next || !ep->next);
1087 1088 1089 1090 1091 1092
  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state
1093 1094 1095
   EARLY --> EARLY: nua_i_prack, nua_i_state
   EARLY --> EARLY: nua_i_update, nua_i_state
   EARLY --> EARLY: nua_r_update, nua_i_state
1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
   EARLY -(S3b)-> COMPLETED: nua_respond(), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */

  /* Responded with 183 Session Progress */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 183);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_update);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
1119
  TEST_1(!is_offer_sent(e->data->e_tags));
1120 1121
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));
1122
  TEST_1(!is_answer_recv(e->data->e_tags));
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 180);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  /* 180 PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Responded with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 200);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
1148
    printf("TEST NUA-10.3.1: PASSED\n");
1149 1150

  if (print_headings)
1151
    printf("TEST NUA-10.3.2: terminate call\n");
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177

  BYE(b, b_call, b_call->nh, TAG_END());
  run_ab_until(ctx, -1, until_terminated, -1, until_terminated);

  /* B transitions:
   READY --(T2)--> TERMINATING: nua_bye()
   TERMINATING --(T3)--> TERMINATED: nua_r_bye, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_r_bye);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  /* A: READY -(T1)-> TERMINATED: nua_i_bye, nua_i_state */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_bye);
  TEST(e->data->e_status, 200);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, a->events);

  nua_handle_destroy(a_call->nh), a_call->nh = NULL;
  nua_handle_destroy(b_call->nh), b_call->nh = NULL;

  if (print_headings)
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
    printf("TEST NUA-10.3.2: PASSED\n");

  END();
}

/*
 X  accept_updated    ep
 |-------INVITE------>|
 |       (sdp)        |
 |<----100 Trying-----|
 |                    |
 |<-------183---------|
 |       (sdp)        |
 |-------PRACK------->|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
 |-------UPDATE------>|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
 |                    |
 |<-------180---------|
 |                    |
 |<------200 OK-------|
 |--------ACK-------->|
 |                    |
*/
int accept_updated(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (event) {
  case nua_i_update:
    if (200 <= status && status < 300) {
      RESPOND(ep, call, nh, SIP_180_RINGING, TAG_END());
    }
    return 0;
  default:
    break;
  }

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_183_SESSION_PROGRESS,
	    SIPTAG_REQUIRE_STR("100rel"),
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_early:
    if (status == 180)
      RESPOND(ep, call, nh, SIP_200_OK, TAG_END());
    return 0;
  case nua_callstate_ready:
    return 1;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}


int test_preconditions2(struct context *ctx)
{
  BEGIN();

  struct endpoint *a = &ctx->a,  *b = &ctx->b;
  struct call *a_call = a->call, *b_call = b->call;
1254
  struct event *e, *eu, *ei;
1255
  enum nua_callstate ustate, istate;
1256 1257

  if (print_headings)
1258
    printf("TEST NUA-10.4.1: Call with preconditions and non-100rel 180\n");
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269

/* Test 100rel and preconditions with NUTAG_ONLY183_100REL(1):

   A			B
   |-------INVITE------>|
   |<----100 Trying-----|
   |			|
   |<-------183---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
1270 1271 1272 1273 1274 1275 1276 1277
   |-------UPDATE------>|
 +------------------------+
 | |<-------200---------| |
 | |			| |
 | |<-------180---------| |
 | |			| |
 | |<------200 OK-------| |
 +------------------------+
1278 1279 1280 1281 1282 1283
   |--------ACK-------->|
   |			|
   |<-------BYE---------|
   |-------200 OK-------|
   |			|

1284
   Note that the boxed responses above can be re-ordered
1285
   (180 or 200 OK to INVITE is received before 200 OK to UPDATE).
1286
   ACK, however, is sent only after 200 OK to both UPDATE and INVITE.
1287 1288 1289 1290 1291 1292 1293
*/

  a_call->sdp = "m=audio 5008 RTP/AVP 8";
  b_call->sdp = "m=audio 5010 RTP/AVP 0 8";

  nua_set_params(ctx->a.nua,
		 NUTAG_EARLY_MEDIA(1),
1294
		 SIPTAG_SUPPORTED_STR("100rel, precondition, timer"),
1295 1296 1297 1298 1299 1300
		 TAG_END());
  run_a_until(ctx, nua_r_set_params, until_final_response);

  nua_set_params(ctx->b.nua,
		 NUTAG_EARLY_MEDIA(1),
		 NUTAG_ONLY183_100REL(1),
1301
		 SIPTAG_SUPPORTED_STR("100rel, precondition, timer"),
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
		 TAG_END());
  run_b_until(ctx, nua_r_set_params, until_final_response);

  TEST_1(a_call->nh = nua_handle(a->nua, a_call, SIPTAG_TO(b->to), TAG_END()));

  INVITE(a, a_call, a_call->nh,
	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
	 SOATAG_USER_SDP_STR(a_call->sdp),
	 SIPTAG_SUPPORTED_STR("100rel"),
	 SIPTAG_REQUIRE_STR("precondition"),
	 TAG_END());

  run_ab_until(ctx, -1, until_ready, -1, accept_updated);

  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 183);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
1331
  /* Offer is sent in PRACK */
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_prack);
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

  /* Send UPDATE */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(!is_answer_recv(e->data->e_tags));
  TEST_1(is_offer_sent(e->data->e_tags));

1348
  /* The final response to the UPDATE and INVITE can be received in any order */
1349 1350
  eu = event_by_type(e->next, nua_r_update);
  ei = event_by_type(e->next, nua_r_invite);
1351

1352 1353
  TEST_1(e = eu); TEST_E(e->data->e_event, nua_r_update);
  TEST(e->data->e_status, 200);
1354
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
1355
  ustate = callstate(e->data->e_tags);
1356 1357 1358
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

1359
  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
1360 1361 1362 1363 1364
  TEST(e->data->e_status, 180);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding); /* PROCEEDING */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

1365
  /* Final response to INVITE  */
1366
  TEST_1(ei = event_by_type(ei->next, nua_r_invite));
1367

1368 1369 1370
  TEST_E(ei->data->e_event, nua_r_invite); TEST(ei->data->e_status, 200);
  TEST_1(e = ei->next); TEST_E(e->data->e_event, nua_i_state);
  istate = callstate(e->data->e_tags);
1371
  TEST_1(!is_offer_answer_done(e->data->e_tags));
1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383

  if (eu == e->next) {
    /* 200 OK to UPDATE is received after 200 OK to INVITE */
    TEST(ustate, nua_callstate_ready);
    TEST(istate, nua_callstate_completing);
  }
  else {
    /* 200 OK to UPDATE is received before 200 OK to INVITE */
    TEST(ustate, nua_callstate_proceeding);
    TEST(istate, nua_callstate_ready);
  }

1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432
  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(), nua_i_state
   EARLY -(S3b)-> COMPLETED: nua_respond(), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */

  /* Responded with 183 Session Progress */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_update);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  /* Responded with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
1433
    printf("TEST NUA-10.4.1: PASSED\n");
1434 1435

  if (print_headings)
1436
    printf("TEST NUA-10.4.2: terminate call\n");
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462

  BYE(b, b_call, b_call->nh, TAG_END());
  run_ab_until(ctx, -1, until_terminated, -1, until_terminated);

  /* B transitions:
   READY --(T2)--> TERMINATING: nua_bye()
   TERMINATING --(T3)--> TERMINATED: nua_r_bye, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_r_bye);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  /* A: READY -(T1)-> TERMINATED: nua_i_bye, nua_i_state */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_bye);
  TEST(e->data->e_status, 200);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_terminated); /* TERMINATED */
  TEST_1(!e->next);
  free_events_in_list(ctx, a->events);

  nua_handle_destroy(a_call->nh), a_call->nh = NULL;
  nua_handle_destroy(b_call->nh), b_call->nh = NULL;

  if (print_headings)
1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515
    printf("TEST NUA-10.4.2: PASSED\n");

  END();
}

/*
 X  ringing_updated2  ep
 |-------INVITE------>|
 |       (sdp)        |
 |<----100 Trying-----|
 |                    |
 |<-------183---------|
 |       (sdp)        |
 |-------PRACK------->|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
 |-------UPDATE------>|
 |       (sdp)        |
 |<-------200---------|
 |       (sdp)        |
 |                    |
 |<------UPDATE-------|
 |       (sdp)        |
 |--------200-------->|
 |       (sdp)        |
 |                    |
<using  acccept_pracked>
 |                    |
 |<-------180---------|
 |-------PRACK------->|
 |<-------200---------|
 |                    |
 |<------200 OK-------|
 |--------ACK-------->|
 |                    |
*/
int ringing_updated2(CONDITION_PARAMS)
{
  if (!(check_handle(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR)))
    return 0;

  save_event_in_list(ctx, event, ep, call);

  switch (event) {
  case nua_i_update:
    if (200 <= status && status < 300) {
      UPDATE(ep, call, nh, TAG_END());
    }
    return 0;
  case nua_r_update:
    if (200 <= status && status < 300) {
1516
      RESPOND(ep, call, nh, SIP_180_RINGING,
1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
	      SIPTAG_REQUIRE_STR("100rel"),
	      TAG_END());
      ep->next_condition = accept_pracked;
    }
    else if (300 <= status) {
      RESPOND(ep, call, nh, SIP_500_INTERNAL_SERVER_ERROR, TAG_END());
    }
    return 0;
  default:
    break;
  }

  switch (callstate(tags)) {
  case nua_callstate_received:
    RESPOND(ep, call, nh, SIP_183_SESSION_PROGRESS,
	    SIPTAG_REQUIRE_STR("100rel"),
	    TAG_IF(call->sdp, SOATAG_USER_SDP_STR(call->sdp)),
	    TAG_END());
    return 0;
  case nua_callstate_early:
    return 0;
  case nua_callstate_ready:
    return 1;
  case nua_callstate_terminated:
    if (call)
      nua_handle_destroy(call->nh), call->nh = NULL;
    return 1;
  default:
    return 0;
  }
}

int test_update_by_uas(struct context *ctx)
{
  BEGIN();

  struct endpoint *a = &ctx->a,  *b = &ctx->b;
  struct call *a_call = a->call, *b_call = b->call;
1555
  struct event *e, *ep, *ei;
1556
  sip_t *sip;
1557

1558 1559 1560
  /* -------------------------------------------------------------------- */

  if (print_headings)
1561
    printf("TEST NUA-10.5.1: Call with dual UPDATE\n");
1562

1563
/* Test for update by UAS.
1564 1565 1566 1567 1568 1569 1570 1571 1572 1573

   A			B
   |-------INVITE------>|
   |<----100 Trying-----|
   |			|
   |<-------183---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
   |-------UPDATE------>|
1574 1575 1576 1577 1578
 +------------------------+
 | |<-------200---------| |
 | |			| |
 | |<------UPDATE-------| |
 +------------------------+
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   |--------200-------->|
   |			|
   |<-------180---------|
   |-------PRACK------->|
   |<-------200---------|
   |			|
   |<------200 OK-------|
   |--------ACK-------->|
   |			|
   |<-------BYE---------|
   |-------200 OK-------|
   |			|

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 Note that the 200 OK to UPDATE from A and UPDATE from B may be re-ordered
 In that case, A will respond with 500/Retry-After and B will retry UPDATE.
 See do {} while () loop below.
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*/

  a_call->sdp = "m=audio 5008 RTP/AVP 8";
  b_call->sdp = "m=audio 5010 RTP/AVP 0 8";

  nua_set_params(ctx->a.nua,
		 NUTAG_EARLY_MEDIA(1),
		 SIPTAG_SUPPORTED_STR("100rel, precondition"),
		 TAG_END());
  run_a_until(ctx, nua_r_set_params, until_final_response);

  nua_set_params(ctx->b.nua,
		 NUTAG_EARLY_MEDIA(0),
		 SIPTAG_SUPPORTED_STR("100rel, precondition, timer"),
		 TAG_END());
  run_b_until(ctx, nua_r_set_params, until_final_response);

  TEST_1(a_call->nh = nua_handle(a->nua, a_call, SIPTAG_TO(b->to), TAG_END()));

  INVITE(a, a_call, a_call->nh,
	 TAG_IF(!ctx->proxy_tests, NUTAG_URL(b->contact->m_url)),
	 SOATAG_USER_SDP_STR(a_call->sdp),
	 SIPTAG_SUPPORTED_STR("100rel"),
	 SIPTAG_REQUIRE_STR("precondition"),
	 TAG_END());

  run_ab_until(ctx, -1, until_ready, -1, ringing_updated2);

  /* Client transitions:
     INIT -(C1)-> CALLING: nua_invite(), nua_i_state
     CALLING -(C2)-> PROCEEDING: nua_r_invite, nua_i_state
     PROCEEDING: nua_r_prack, nua_i_state
     PROCEEDING: nua_r_update, nua_i_state
     PROCEEDING: nua_i_update, nua_i_state
     PROCEEDING -(C3+C4)-> READY: nua_r_invite, nua_i_state
  */
  TEST_1(e = a->events->head); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_calling); /* CALLING */
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 183);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_prack);
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(!is_answer_recv(e->data->e_tags));
  TEST_1(is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_update);
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_answer_recv(e->data->e_tags));
  TEST_1(!is_offer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_update);
  TEST(e->data->e_status, 200);

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding);
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_invite);
  TEST(e->data->e_status, 180);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_proceeding); /* PROCEEDING */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

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  ei = event_by_type(e->next, nua_r_invite);
  ep = event_by_type(e->next, nua_r_prack);
  if (!ep) {
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    run_a_until(ctx, -1, save_until_final_response);
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    ep = event_by_type(e->next, nua_r_prack);
  }

  TEST_1(e = ep); TEST_E(e->data->e_event, nua_r_prack);
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  TEST(e->data->e_status, 200);
  /* Does not have effect on call state */

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  TEST_1(e = ei); TEST_E(e->data->e_event, nua_r_invite);
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  TEST(e->data->e_status, 200);
  if (ctx->proxy_tests) {
    TEST_1(sip = sip_object(e->data->e_msg));
    TEST_1(sip->sip_session_expires);
    TEST_S(sip->sip_session_expires->x_refresher, "uas");
    TEST_1(!sip_has_supported(sip->sip_require, "timer"));
  }

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
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  TEST_1(!e->next || !ep->next);
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  free_events_in_list(ctx, a->events);

  /*
   Server transitions:
   INIT -(S1)-> RECEIVED: nua_i_invite, nua_i_state
   RECEIVED -(S2a)-> EARLY: nua_respond(183), nua_i_state
   EARLY --> EARLY: nua_i_prack, nua_i_state
   EARLY --> EARLY: nua_i_update, nua_i_state
   EARLY --> EARLY: nua_update(), nua_i_state
   EARLY --> EARLY: nua_r_update, nua_i_state
   EARLY --> EARLY: nua_respond(180), nua_i_state
   EARLY --> EARLY: nua_i_prack, nua_i_state
   EARLY -(S3b)-> COMPLETED: nua_respond(200), nua_i_state
   COMPLETED -(S4)-> READY: nua_i_ack, nua_i_state
  */
  TEST_1(e = b->events->head); TEST_E(e->data->e_event, nua_i_invite);
  TEST(e->data->e_status, 100);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_received); /* RECEIVED */

  /* Responded with 183 Session Progress */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 183);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_update);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(is_offer_recv(e->data->e_tags));
  TEST_1(is_answer_sent(e->data->e_tags));

  /* sent UPDATE */
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  do {
    TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
    TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
1744
    TEST_1(is_offer_sent(e->data->e_tags));
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    TEST_1(!is_offer_recv(e->data->e_tags));
    TEST_1(!is_answer_sent(e->data->e_tags));
    TEST_1(!is_answer_recv(e->data->e_tags));
1748

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    TEST_1(e = e->next); TEST_E(e->data->e_event, nua_r_update);
    if (e->data->e_status == 100) {
      TEST_1(sip = sip_object(e->data->e_msg));
      TEST(sip->sip_status->st_status, 500); TEST_1(sip->sip_retry_after);
    }
  } while (e->data->e_status == 100);
  TEST(e->data->e_status, 200);
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  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
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  TEST_1(!is_offer_sent(e->data->e_tags)); /* XXX */
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  TEST_1(!is_offer_recv(e->data->e_tags));
  TEST_1(!is_answer_sent(e->data->e_tags));
  TEST_1(is_answer_recv(e->data->e_tags));

  /* Responded with 180 Ringing */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 180);
  TEST(callstate(e->data->e_tags), nua_callstate_early); /* EARLY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  /* 180 PRACKed */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_prack);
  /* Does not have effect on call state */

  /* Responded with 200 OK */
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(e->data->e_status, 200);
  TEST(callstate(e->data->e_tags), nua_callstate_completed); /* COMPLETED */
  TEST_1(!is_offer_answer_done(e->data->e_tags));

  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_ack);
  TEST_1(e = e->next); TEST_E(e->data->e_event, nua_i_state);
  TEST(callstate(e->data->e_tags), nua_callstate_ready); /* READY */
  TEST_1(!is_offer_answer_done(e->data->e_tags));
  TEST_1(!e->next);
  free_events_in_list(ctx, b->events);

  if (print_headings)
1787