gnutls_record_set_max_size(3)

API function

Section 3 gnutls-doc bookworm source

Description

gnutls_record_set_max_size

NAME

gnutls_record_set_max_size - API function

SYNOPSIS

#include <gnutls/gnutls.h>

ssize_t gnutls_record_set_max_size(gnutls_session_t session, size_t size);

ARGUMENTS

gnutls_session_t session

is a gnutls_session_t type.

size_t size

is the new size

DESCRIPTION

This function sets the maximum amount of plaintext sent and received in a record in this connection.

Prior to 3.6.4, this function was implemented using a TLS extension called ’max fragment length’, which limits the acceptable values to 512(=2ˆ9), 1024(=2ˆ10), 2048(=2ˆ11) and 4096(=2ˆ12).

Since 3.6.4, the limit is also negotiated through a new TLS extension called ’record size limit’, which doesn’t have the limitation, as long as the value ranges between 512 and 16384. Note that while the ’record size limit’ extension is preferred, not all TLS implementations use or even understand the extension.

DEPRECATED

if the client can assume that the ’record size limit’ extension is supported by the server, we recommend using gnutls_record_set_max_recv_size() instead.

RETURNS

On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned.

REPORTING BUGS

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

COPYRIGHT

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.