.\"	$OpenBSD: SSL_SESSION_get_compress_id.3,v 1.3 2018/03/23 05:50:30 schwarze Exp $
.\"	OpenSSL SSL_SESSION_get_compress_id.pod b31db505 Mar 24 16:01:50 2017
.\"
.\" This file was written by Matt Caswell <matt@openssl.org>
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.Dd $Mdocdate: March 23 2018 $
.Dt SSL_SESSION_GET_COMPRESS_ID 3
.Os
.Sh NAME
.Nm SSL_SESSION_get_compress_id
.Nd get details about the compression associated with a session
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft unsigned int
.Fo SSL_SESSION_get_compress_id
.Fa "const SSL_SESSION *s"
.Fc
.Sh DESCRIPTION
If compression has been negotiated for an ssl session,
.Fn SSL_SESSION_get_compress_id
returns the id for the compression method, or 0 otherwise.
The only built-in supported compression method is zlib,
which has an id of 1.
.Sh SEE ALSO
.Xr ssl 3 ,
.Xr SSL_get_session 3 ,
.Xr SSL_SESSION_get_id 3 ,
.Xr SSL_SESSION_get_protocol_version 3 ,
.Xr SSL_SESSION_new 3
.Sh HISTORY
.Fn SSL_SESSION_get_compress_id
first appeared in OpenSSL 1.0.1 and has been available since
.Ox 5.3 .