gnutls_dtls_set_mtu(3) gnutls gnutls_dtls_set_mtu(3)

gnutls_dtls_set_mtu - API function

#include <gnutls/dtls.h>

void gnutls_dtls_set_mtu(gnutls_session_t session, unsigned int mtu);

is a gnutls_session_t type.
The maximum transfer unit of the transport

This function will set the maximum transfer unit of the transport that DTLS packets are sent over. Note that this should exclude the IP (or IPv6) and UDP headers. So for DTLS over IPv6 on an Ethernet device with MTU 1500, the DTLS MTU set with this function would be 1500 - 40 (IPV6 header) - 8 (UDP header) = 1452.


Report bugs to <>.
Home page:

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.

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

3.8.5 gnutls