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gnutls_alpn_set_protocols - Man Page

API function


#include <gnutls/gnutls.h>

int gnutls_alpn_set_protocols(gnutls_session_t session, const gnutls_datum_t * protocols, unsigned protocols_size, unsigned int flags);


gnutls_session_t session

is a gnutls_session_t type.

const gnutls_datum_t * protocols

is the protocol names to add.

unsigned protocols_size

the number of protocols to add.

unsigned int flags

zero or a sequence of gnutls_alpn_flags_t


This function is to be used by both clients and servers, to declare the supported ALPN protocols, which are used during negotiation with peer.

See gnutls_alpn_flags_t description for the documentation of available flags.


On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned.

Since 3.2.0

Reporting Bugs

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

See Also

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit



3.8.6 gnutls