@deftypefun {const gnutls_datum_t *} {gnutls_certificate_get_peers} (gnutls_session_t          @var{session}, unsigned int * @var{list_size})
@var{session}: is a gnutls session

@var{list_size}: is the length of the certificate list (may be @code{NULL} )

Get the peer's raw certificate (chain) as sent by the peer.  These
certificates are in raw format (DER encoded for X.509).  In case of
a X.509 then a certificate list may be present.  The list
is provided as sent by the server; the server must send as first
certificate in the list its own certificate, following the
issuer's certificate, then the issuer's issuer etc. However, there
are servers which violate this principle and thus on certain
occasions this may be an unsorted list.

In resumed sessions, this function will return the peer's certificate
list as used in the first/original session.

@strong{Returns:} a pointer to a @code{gnutls_datum_t}  containing the peer's
certificates, or @code{NULL}  in case of an error or if no certificate
was used.
@end deftypefun