gnutls_handshake_set_max_packet_length(3) — Linux manual page



NAME         top

       gnutls_handshake_set_max_packet_length - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       void gnutls_handshake_set_max_packet_length(gnutls_session_t
       session, size_t max);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls_session_t type.

       size_t max  is the maximum number.

DESCRIPTION         top

       This function will set the maximum size of all handshake
       messages.  Handshakes over this size are rejected with
       GNUTLS_E_HANDSHAKE_TOO_LARGE error code.  The default value is
       128kb which is typically large enough.  Set this to 0 if you do
       not want to set an upper limit.

       The reason for restricting the handshake message sizes are to
       limit Denial of Service attacks.

       Note that the maximum handshake size was increased to 128kb from
       48kb in GnuTLS 3.5.5.

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001- 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
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       ⟨⟩ on 2023-06-23.  If you
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gnutls                         gnu3t.l8s._0handshake_set_max_packet_length(3)