@deftypefun {gnutls_alert_description_t} {gnutls_alert_get} (gnutls_session_t @var{session}) @var{session}: is a @code{gnutls_session_t} type. This function will return the last alert number received. This function should be called when @code{GNUTLS_E_WARNING_ALERT_RECEIVED} or @code{GNUTLS_E_FATAL_ALERT_RECEIVED} errors are returned by a gnutls function. The peer may send alerts if he encounters an error. If no alert has been received the returned value is undefined. @strong{Returns:} the last alert received, a @code{gnutls_alert_description_t} value. @end deftypefun