void gnutls_psk_set_client_credentials_function2(gnutls_psk_client_credentials_t cred, gnutls_psk_client_credentials_function2 * func);
- gnutls_psk_client_credentials_t cred
is a gnutls_psk_server_credentials_t type.
- gnutls_psk_client_credentials_function2 * func
is the callback function
This function can be used to set a callback to retrieve the username and password for client PSK authentication. The callback's function form is: int (*callback)(gnutls_session_t, gnutls_datum_t* username, gnutls_datum_t* key);
This callback function has the same semantics as that of gnutls_psk_set_client_credentials_function(), but it allows non-string usernames to be used.
The username and key ->data must be allocated using gnutls_malloc(). The username should be an ASCII string or UTF-8 string. In case of a UTF-8 string it is recommended to be following the PRECIS framework for usernames (rfc8265).
The callback function will be called once per handshake.
The callback function should return 0 on success. -1 indicates an error.
Report bugs to <firstname.lastname@example.org>.
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