Function lwip_getaddrname

components/net/lwip/lwip-2.1.2/src/api/sockets.c:2721–2766

}

static int
lwip_getaddrname(int s, struct sockaddr *name, socklen_t *namelen, u8_t local)
{
  struct lwip_sock *sock;
  union sockaddr_aligned saddr;
  ip_addr_t naddr;
  u16_t port;
  err_t err;

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

  /* get the IP address and port */
  err = netconn_getaddr(sock->conn, &naddr, &port, local);
  if (err != ERR_OK) {
    sock_set_errno(sock, err_to_errno(err));
    done_socket(sock);
    return -1;
  }

#if LWIP_IPV4 && LWIP_IPV6
  /* Dual-stack: Map IPv4 addresses to IPv4 mapped IPv6 */
  if (NETCONNTYPE_ISIPV6(netconn_type(sock->conn)) &&
      IP_IS_V4_VAL(naddr)) {
    ip4_2_ipv4_mapped_ipv6(ip_2_ip6(&naddr), ip_2_ip4(&naddr));
    IP_SET_TYPE_VAL(naddr, IPADDR_TYPE_V6);
  }
#endif /* LWIP_IPV4 && LWIP_IPV6 */

  IPADDR_PORT_TO_SOCKADDR(&saddr, &naddr, port);

  LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getaddrname(%d, addr=", s));
  ip_addr_debug_print_val(SOCKETS_DEBUG, naddr);
  LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", port));

  if (*namelen > saddr.sa.sa_len) {
    *namelen = saddr.sa.sa_len;
  }
  MEMCPY(name, &saddr, *namelen);

  sock_set_errno(sock, 0);
  done_socket(sock);
  return 0;
}

int
lwip_getpeername(int s, struct sockaddr *name, socklen_t *namelen)