/* coap_io_riot.c -- Default network I/O functions for libcoap on RIOT
 *
 * Copyright (C) 2019 Olaf Bergmann <bergmann@tzi.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * This file is part of the CoAP library libcoap. Please see
 * README for terms of use.
 */

/**
 * @file coap_io_riot.c
 * @brief RIOT specific I/O functions
 */

#include "coap3/coap_internal.h"

#ifdef HAVE_STDIO_H
#  include <stdio.h>
#endif

#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# define OPTVAL_T(t)         (t)
# define OPTVAL_GT(t)        (t)
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif

#include "net/gnrc.h"
#include "net/gnrc/ipv6.h"
#include "net/gnrc/netreg.h"
#include "net/udp.h"

#include "coap3/coap_riot.h"

/*
 * dgram
 * return +ve Number of bytes written.
 *         -1 Error error in errno).
 */
ssize_t
coap_socket_send(coap_socket_t *sock,
                 const coap_session_t *session,
                 const uint8_t *data,
                 size_t datalen) {
  ssize_t bytes_written = 0;

  if (!coap_debug_send_packet()) {
    bytes_written = (ssize_t)datalen;
  } else if (sock->flags & COAP_SOCKET_CONNECTED) {
    bytes_written = send(sock->fd, data, datalen, 0);
  } else {
    bytes_written = sendto(sock->fd, data, datalen, 0,
                           &session->addr_info.remote.addr.sa,
                           session->addr_info.remote.size);
  }

  if (bytes_written < 0)
    coap_log_crit("coap_socket_send: %s\n", coap_socket_strerror());

  return bytes_written;
}

static msg_t _msg_q[LIBCOAP_MSG_QUEUE_SIZE];

void
coap_riot_startup(void) {
  msg_init_queue(_msg_q, LIBCOAP_MSG_QUEUE_SIZE);
}