gnutls_psk_set_server_credentials_function — Used to set a callback to retrieve the user's PSK credentials
#include <gnutls/gnutls.h>
void
gnutls_psk_set_server_credentials_function( |
gnutls_psk_server_credentials_t | cred, |
| gnutls_psk_server_credentials_function * | func); |
is a gnutls_psk_server_credentials_t structure.
is the callback function
This function can be used to set a callback to retrieve the user's PSK credentials. The callback's function form is: int (*callback)(gnutls_session_t, const char* username, gnutls_datum_t* key);
username contains
the actual username. The key must be filled in using the
gnutls_malloc().
In case the callback returned a negative number then gnutls will assume that the username does not exist.
The callback function will only be called once per handshake. The callback function should return 0 on success, while −1 indicates an error.