Function lwip_bind

components/net/lwip/lwip-2.1.2/src/api/sockets.c:739–791

}

int
lwip_bind(int s, const struct sockaddr *name, socklen_t namelen)
{
  struct lwip_sock *sock;
  ip_addr_t local_addr;
  u16_t local_port;
  err_t err;

  sock = get_socket(s);
  if (!sock) {
    return -1;
  }

  if (!SOCK_ADDR_TYPE_MATCH(name, sock)) {
    /* sockaddr does not match socket type (IPv4/IPv6) */
    sock_set_errno(sock, err_to_errno(ERR_VAL));
    done_socket(sock);
    return -1;
  }

  /* check size, family and alignment of 'name' */
  LWIP_ERROR("lwip_bind: invalid address", (IS_SOCK_ADDR_LEN_VALID(namelen) &&
             IS_SOCK_ADDR_TYPE_VALID(name) && IS_SOCK_ADDR_ALIGNED(name)),
             sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;);
  LWIP_UNUSED_ARG(namelen);

  SOCKADDR_TO_IPADDR_PORT(name, &local_addr, local_port);
  LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s));
  ip_addr_debug_print_val(SOCKETS_DEBUG, local_addr);
  LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", local_port));

#if LWIP_IPV4 && LWIP_IPV6
  /* Dual-stack: Unmap IPv4 mapped IPv6 addresses */
  if (IP_IS_V6_VAL(local_addr) && ip6_addr_isipv4mappedipv6(ip_2_ip6(&local_addr))) {
    unmap_ipv4_mapped_ipv6(ip_2_ip4(&local_addr), ip_2_ip6(&local_addr));
    IP_SET_TYPE_VAL(local_addr, IPADDR_TYPE_V4);
  }
#endif /* LWIP_IPV4 && LWIP_IPV6 */

  err = netconn_bind(sock->conn, &local_addr, local_port);

  if (err != ERR_OK) {
    LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err));
    sock_set_errno(sock, err_to_errno(err));
    done_socket(sock);
    return -1;
  }

  LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s));
  sock_set_errno(sock, 0);
  done_socket(sock);
  return 0;
}

int
lwip_close(int s)