5 @deftypefun {int} {gnutls_alpn_set_protocols} (gnutls_session_t @var{session}, const gnutls_datum_t * @var{protocols}, unsigned @var{protocols_size}, unsigned int @var{flags})
6 @var{session}: is a @code{gnutls_session_t} structure.
8 @var{protocols}: is the protocol names to add.
10 @var{protocols_size}: the number of protocols to add.
12 @var{flags}: zero or @code{GNUTLS_ALPN_} *
14 This function is to be used by both clients and servers, to declare
15 the supported ALPN protocols, which are used during negotiation with peer.
17 If @code{GNUTLS_ALPN_MAND} is specified the connection will be aborted
18 if no matching ALPN protocol is found.
20 @strong{Returns:} On success, @code{GNUTLS_E_SUCCESS} (0) is returned,
21 otherwise a negative error code is returned.