Function get_socket

components/net/lwip/lwip-1.4.1/src/api/sockets.c:194–214

* Map a externally used socket index to the internal socket representation. * * @param s externally used socket index * @return struct lwip_sock for the socket or NULL if not found */

 * @return struct lwip_sock for the socket or NULL if not found
 */
static struct lwip_sock *
get_socket(int s)
{
  struct lwip_sock *sock;

  if ((s < 0) || (s >= NUM_SOCKETS)) {
    LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s));
    set_errno(EBADF);
    return NULL;
  }

  sock = &sockets[s];

  if (!sock->conn) {
    LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s));
    set_errno(EBADF);
    return NULL;
  }

  return sock;
}

/**
 * Same as get_socket but doesn't set errno