.\" $OpenBSD: OPENSSL_init_ssl.3,v 1.2 2018/03/24 00:55:37 schwarze Exp $
.\" Copyright (c) 2018 Ingo Schwarze <schwarze@openbsd.org>
.\"
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.Dd $Mdocdate: March 24 2018 $
.Dt OPENSSL_INIT_SSL 3
.Os
.Sh NAME
.Nm OPENSSL_init_ssl
.Nd initialise the crypto and ssl libraries
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft int
.Fo OPENSSL_init_ssl
.Fa "uint64_t options"
.Fa "const void *dummy"
.Fc
.Sh DESCRIPTION
.Fn OPENSSL_init_ssl
calls
.Xr OPENSSL_init_crypto 3
and also allocates various resources used internally by the ssl library.
.Pp
Calling it is never useful because it is automatically called
internally when needed.
.Pp
The
.Fa options
argument is passed on to
.Xr OPENSSL_init_crypto 3
and the
.Fa dummy
argument is ignored.
.Pp
If this function is called more than once,
none of the calls except the first one have any effect.
.Sh RETURN VALUES
.Fn OPENSSL_init_ssl
is intended to return 1 on success or 0 on error.
.Sh SEE ALSO
.Xr CONF_modules_load_file 3 ,
.Xr OPENSSL_init_crypto 3
.Sh HISTORY
.Fn OPENSSL_init_ssl
first appeared in OpenSSL 1.1.0 and has been available since
.Ox 6.3 .
.Sh BUGS
.Fn OPENSSL_init_ssl
silently ignores even more configuration failures than
.Xr OPENSSL_init_crypto 3 .