gnutls_dtls_cookie_verify(3)       gnutls       gnutls_dtls_cookie_verify(3)

NAME         top

       gnutls_dtls_cookie_verify - API function

SYNOPSIS         top

       #include <gnutls/dtls.h>

       int gnutls_dtls_cookie_verify(gnutls_datum_t * key, void *
       client_data, size_t client_data_size, void * _msg, size_t msg_size,
       gnutls_dtls_prestate_st * prestate);

ARGUMENTS         top

       gnutls_datum_t * key
                   is a random key to be used at cookie generation

       void * client_data
                   contains data identifying the client (i.e. address)

       size_t client_data_size
                   The size of client's data

       void * _msg An incoming message that initiates a connection.

       size_t msg_size
                   The size of the message.

       gnutls_dtls_prestate_st * prestate
                   The cookie of this client.

DESCRIPTION         top

       This function will verify the received message for a valid cookie. If
       a valid cookie is returned then it should be associated with the
       session using gnutls_dtls_prestate_set();

       This function must be called after gnutls_dtls_cookie_send().

RETURNS         top

       GNUTLS_E_SUCCESS (0) on success, or a negative error code.

SINCE         top


REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2019 Free Software Foundation, Inc., and others.
       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         top

       The full documentation for gnutls is maintained as a Texinfo manual.
       If the /usr/share/doc/gnutls/ directory does not contain the HTML
       form visit 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.9.tar.xz fetched from
       ⟨⟩ on 2020-02-08.  If you discover
       any rendering problems in this HTML version of the page, or you
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gnutls                              3.6.9       gnutls_dtls_cookie_verify(3)