.\"	$OpenBSD: SSL_COMP_add_compression_method.3,v 1.4 2018/03/23 00:10:28 schwarze Exp $
.\"
.\" Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
.\"
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.Dd $Mdocdate: March 23 2018 $
.Dt SSL_COMP_ADD_COMPRESSION_METHOD 3
.Os
.Sh NAME
.Nm SSL_COMP_add_compression_method ,
.Nm SSL_COMP_get_compression_methods
.Nd handle SSL/TLS integrated compression methods
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft int
.Fn SSL_COMP_add_compression_method "int id" "COMP_METHOD *cm"
.Ft STACK_OF(SSL_COMP) *
.Fn SSL_COMP_get_compression_methods void
.Sh DESCRIPTION
These functions are deprecated and have no effect.
They are provided purely for compatibility with legacy application code.
.Pp
.Fn SSL_COMP_add_compression_method
used to add the compression method
.Fa cm
with the identifier
.Fa id
to the list of available compression methods.
.Pp
.Fn SSL_COMP_get_compression_methods
used to return a stack of available compression methods.
.Sh RETURN VALUES
.Fn SSL_COMP_add_compression_method
always returns 1.
.Fn SSL_COMP_get_compression_methods
always returns
.Dv NULL .
.Sh HISTORY
.Fn SSL_COMP_add_compression_method
first appeared in OpenSSL 0.9.2b and has been available since
.Ox 2.6 .
.Pp
.Fn SSL_COMP_get_compression_methods
first appeared in OpenSSL 0.9.8 and has been available since
.Ox 4.5 .