suse man page for gnutls_ia_set_client_avp_function

gnutls_ia_set_client_avp_function(3)				      gnutls				      gnutls_ia_set_client_avp_function(3)

NAME
       gnutls_ia_set_client_avp_function - Used to set a AVP callback

SYNOPSIS
       #include <gnutls/extra.h>

       void gnutls_ia_set_client_avp_function(gnutls_ia_client_credentials_t cred, gnutls_ia_avp_func avp_func);

ARGUMENTS
       gnutls_ia_client_credentials_t cred
		   is a gnutls_ia_client_credentials_t structure.

       gnutls_ia_avp_func avp_func
		   is the callback function

DESCRIPTION
       Set the TLS/IA AVP callback handler used for the session.

       The AVP callback is called to process AVPs received from the server, and to get a new AVP to send to the server.

       The  callback's	function  form	is:  int  (*avp_func) (gnutls_session_t session, void *ptr, const char *last, size_t lastlen, char **next,
       size_t *nextlen);

       The session parameter is the gnutls_session_t structure corresponding to the current session.  The ptr parameter is  the  application  hook
       pointer,  set  through  gnutls_ia_set_client_avp_ptr().	The AVP received from the server is present in last of lastlen size, which will be
       NULL on the first invocation.  The newly allocated output AVP to send to the server should be placed in *next of *nextlen size.

       The callback may invoke gnutls_ia_permute_inner_secret() to mix any generated session keys with the TLS/IA inner secret.

       Return 0 (GNUTLS_IA_APPLICATION_PAYLOAD) on success, or a negative error code to abort the TLS/IA handshake.

       Note that the callback must use allocate the next parameter using gnutls_malloc(), because it is released via gnutls_free() by  the  TLS/IA
       handshake function.

REPORTING BUGS
       Report	bugs   to   <bug-gnutls@gnu.org>.   GnuTLS  home  page:  http://www.gnu.org/software/gnutls/  General  help  using  GNU  software:
       http://www.gnu.org/gethelp/

COPYRIGHT
       Copyright (C) 2008 Free Software Foundation.
       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.

SEE ALSO
       The  full documentation for gnutls is maintained as a Texinfo manual.  If the info and gnutls programs are properly installed at your site,
       the command

	      info gnutls

       should give you access to the complete manual.

gnutls								       2.8.6				      gnutls_ia_set_client_avp_function(3)