.\" DO NOT MODIFY THIS FILE!  It was generated by gdoc.
.TH "gnutls_psk_set_client_credentials_function" 3 "3.1.11" "gnutls" "gnutls"
.SH NAME
gnutls_psk_set_client_credentials_function \- API function
.SH SYNOPSIS
.B #include <gnutls/gnutls.h>
.sp
.BI "void gnutls_psk_set_client_credentials_function(gnutls_psk_client_credentials_t                                             " cred ", gnutls_psk_client_credentials_function                                             * " func ");"
.SH ARGUMENTS
.IP "gnutls_psk_client_credentials_t                                             cred" 12
is a \fBgnutls_psk_server_credentials_t\fP structure.
.IP "gnutls_psk_client_credentials_function                                             * func" 12
is the callback function
.SH "DESCRIPTION"
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, char** username,
gnutls_datum_t* key);

The  \fIusername\fP and  \fIkey\fP \->data must be allocated using \fBgnutls_malloc()\fP.
 \fIusername\fP should be ASCII strings or UTF\-8 strings prepared using
the "SASLprep" profile of "stringprep".

The callback function will be called once per handshake.

The callback function should return 0 on success.
\-1 indicates an error.
.SH "REPORTING BUGS"
Report bugs to <bug-gnutls@gnu.org>.
.br
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
.br
GnuTLS home page: http://www.gnu.org/software/gnutls/

.SH COPYRIGHT
Copyright \(co 2012 Free Software Foundation, Inc..
.br
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
.SH "SEE ALSO"
The full documentation for
.B gnutls
is maintained as a Texinfo manual.  If the
.B info
and
.B gnutls
programs are properly installed at your site, the command
.IP
.B info gnutls
.PP
should give you access to the complete manual.
As an alternative you may obtain the manual from:
.IP
.B http://www.gnu.org/software/gnutls/manual/
.PP