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/*
     This file is part of GNUnet.
     Copyright (C) 2009, 2010, 2016 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.

     GNUnet 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
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */
/**
 * @file transport/test_transport_api_disconnect.c
 * @brief base test case for transport implementations
 *
 * This test case tests disconnect notifications in peer shutdown.
 * Starts two peers, has them connect, sends a message in between,
 * stops one peer, expects the others to send a disconnect notification.
 */
#include "platform.h"
#include "gnunet_transport_service.h"
#include "transport-testing.h"

/**
 * How long until we give up on transmitting the message?
 */
#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 120)


static struct GNUNET_TRANSPORT_TESTING_ConnectCheckContext *ccc;

static int shutdown_;


static void
notify_disconnect (void *cls,
                   struct GNUNET_TRANSPORT_TESTING_PeerContext *me,
                   const struct GNUNET_PeerIdentity *other)
{
  if (me != ccc->p[0])
    return;
  GNUNET_TRANSPORT_TESTING_log_disconnect (cls,
                                           me,
                                           other);
  if (GNUNET_YES == shutdown_)
  {
    ccc->global_ret = GNUNET_OK;
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Test good, shutting down...\n");
    GNUNET_SCHEDULER_shutdown ();
  }
}


static void
stop_peer (void *cls)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Shutting down peer %u (`%s')\n",
              ccc->p[1]->no,
              GNUNET_i2s (&ccc->p[1]->id));
  shutdown_ = GNUNET_YES;
  GNUNET_TRANSPORT_TESTING_stop_peer (ccc->p[1]);
  ccc->p[1] = NULL;
}


static void
notify_receive (void *cls,
                struct GNUNET_TRANSPORT_TESTING_PeerContext *receiver,
                const struct GNUNET_PeerIdentity *sender,
                const struct GNUNET_TRANSPORT_TESTING_TestMessage *message)
{
  {
    char *ps = GNUNET_strdup (GNUNET_i2s (&receiver->id));

    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Peer %u (`%s') received message of type %d and size %u size from peer %s!\n",
                receiver->no,
                ps,
                ntohs (message->header.type),
                ntohs (message->header.size),
                GNUNET_i2s (sender));
    GNUNET_free (ps);
  }
  if ((GNUNET_TRANSPORT_TESTING_SIMPLE_MTYPE == ntohs (message->header.type)) &&
      (sizeof(struct GNUNET_TRANSPORT_TESTING_TestMessage) == ntohs (
         message->header.size)))
  {
    GNUNET_SCHEDULER_add_now (&stop_peer,
                              NULL);
    return;
  }
}


int
main (int argc,
      char *argv[])
{
  struct GNUNET_TRANSPORT_TESTING_SendClosure sc = {
    .num_messages = 1
  };
  struct GNUNET_TRANSPORT_TESTING_ConnectCheckContext my_ccc = {
    .connect_continuation = &GNUNET_TRANSPORT_TESTING_simple_send,
    .connect_continuation_cls = &sc,
    .config_file = "test_transport_api_data.conf",
    .rec = &notify_receive,
    .nc = &GNUNET_TRANSPORT_TESTING_log_connect,
    .nd = &notify_disconnect,
    .timeout = TIMEOUT,
    .global_ret = GNUNET_SYSERR
  };

  ccc = &my_ccc;
  sc.ccc = ccc;
  if (GNUNET_OK !=
      GNUNET_TRANSPORT_TESTING_main (2,
                                     &GNUNET_TRANSPORT_TESTING_connect_check,
                                     ccc))
    return 1;
  return 0;
}


/* end of test_transport_api_disconnect.c */