.\"	$OpenBSD: SSL_set_max_send_fragment.3,v 1.5 2019/06/12 09:36:30 schwarze Exp $
.\"	OpenSSL doc/man3/SSL_CTX_set_split_send_fragment.pod
.\"	OpenSSL 6782e5fd Oct 21 16:16:20 2016 +0100
.\"
.\" This file was written by Matt Caswell <matt@openssl.org>.
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.Dd $Mdocdate: June 12 2019 $
.Dt SSL_SET_MAX_SEND_FRAGMENT 3
.Os
.Sh NAME
.Nm SSL_CTX_set_max_send_fragment ,
.Nm SSL_set_max_send_fragment
.Nd control fragment sizes
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft long
.Fo SSL_CTX_set_max_send_fragment
.Fa "SSL_CTX *ctx"
.Fa "long m"
.Fc
.Ft long
.Fo SSL_set_max_send_fragment
.Fa "SSL *ssl"
.Fa "long m"
.Fc
.Sh DESCRIPTION
.Fn SSL_CTX_set_max_send_fragment
and
.Fn SSL_set_max_send_fragment
set the
.Sy max_send_fragment
parameter for SSL_CTX and SSL objects respectively.
This value restricts the amount of plaintext bytes that will be sent in
any one SSL/TLS record.
By default its value is SSL3_RT_MAX_PLAIN_LENGTH (16384).
These functions will only accept a value in the range 512 -
SSL3_RT_MAX_PLAIN_LENGTH.
.Pp
These functions are implemented using macros.
.Sh RETURN VALUES
These functions return 1 on success or 0 on failure.
.Sh SEE ALSO
.Xr ssl 3 ,
.Xr SSL_ctrl 3 ,
.Xr SSL_CTX_set_read_ahead 3 ,
.Xr SSL_pending 3
.Sh HISTORY
.Fn SSL_CTX_set_max_send_fragment
and
.Fn SSL_set_max_send_fragment
first appeared in OpenSSL 1.0.0 and have been available since
.Ox 4.9 .