gnutls_dtls_set_data_mtu(3)        gnutls        gnutls_dtls_set_data_mtu(3)

NAME         top

       gnutls_dtls_set_data_mtu - API function

SYNOPSIS         top

       #include <gnutls/dtls.h>

       int gnutls_dtls_set_data_mtu(gnutls_session_t session, unsigned int

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls_session_t type.

       unsigned int mtu
                   The maximum unencrypted transfer unit of the session

DESCRIPTION         top

       This function will set the maximum size of the *unencrypted* records
       which will be sent over a DTLS session. It is equivalent to
       calculating the DTLS packet overhead with the current encryption
       parameters, and calling gnutls_dtls_set_mtu() with that value. In
       particular, this means that you may need to call this function again
       after any negotiation or renegotiation, in order to ensure that the
       MTU is still sufficient to account for the new protocol overhead.

       In most cases you only need to call gnutls_dtls_set_mtu() with the
       maximum MTU of your transport layer.

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 © 2001-2018 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-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

gnutls                              3.6.2        gnutls_dtls_set_data_mtu(3)