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gnutls_dtls_set_data_mtu(3) — Linux manual page

gnutls_dtls_set_data_mtu(3)       gnutlsgnutls_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_tsession, unsignedintmtu);

ARGUMENTS        top

       gnutls_session_t session                   is agnutls_session_ttype.       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 callinggnutls_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 callgnutls_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

       3.1

REPORTING BUGS        top

       Report bugs to <bugs@gnutls.org>.       Home page:https://www.gnutls.org

COPYRIGHT        top

       Copyright © 2001-2023 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 forgnutlsis maintained as a Texinfo       manual.  If the /usr/share/doc/gnutls/ directory does not contain       the HTML form visithttps://www.gnutls.org/manual/

COLOPHON        top

       This page is part of theGnuTLS (GnuTLS Transport Layer Security       Library) project.  Information about the project can be found at       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this       manual page, send it to bugs@gnutls.org.  This page was obtained       from the tarball fetched from       ⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11.  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 isnot part of the original manual page),       send a mail to man-pages@man7.orggnutls                            3.8.10gnutls_dtls_set_data_mtu(3)

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