Sortix 1.1dev nightly manual
This manual documents Sortix 1.1dev nightly, a development build that has not been officially released. You can instead view this document in the latest official manual.
SSL_GET_VERSION(3) | Library Functions Manual | SSL_GET_VERSION(3) |
NAME
SSL_get_version
,
SSL_is_dtls
,
SSL_version
—
get the protocol information of a connection
SYNOPSIS
#include
<openssl/ssl.h>
const char *
SSL_get_version
(const
SSL *ssl);
int
SSL_is_dtls
(const
SSL *ssl);
int
SSL_version
(const
SSL *ssl);
DESCRIPTION
SSL_get_version
() returns the name of the
protocol used for the connection ssl.
SSL_is_dtls
() returns 1 if the connection is
using DTLS, 0 if not.
SSL_version
() returns an integer constant
representing that protocol.
These functions only return reliable results after the initial handshake has
been completed.
RETURN VALUES
The following strings or integers can be returned bySSL_get_version
() and
SSL_version
():
- “TLSv1” or
TLS1_VERSION
- The connection uses the TLSv1.0 protocol.
- “TLSv1.1” or
TLS1_1_VERSION
- The connection uses the TLSv1.1 protocol.
- “TLSv1.2” or
TLS1_2_VERSION
- The connection uses the TLSv1.2 protocol.
- “TLSv1.3” or
TLS1_3_VERSION
- The connection uses the TLSv1.3 protocol.
- “DTLSv1” or
DTLS1_VERSION
- The connection uses the Datagram Transport Layer Security 1.0 protocol.
- “DTLSv1.2” or
DTLS1_2_VERSION
- The connection uses the Datagram Transport Layer Security 1.2 protocol.
- “unknown”
- This indicates an unknown protocol version; it cannot currently happen with LibreSSL.
SSL_is_dtls
() returns 1 if the connection
uses DTLS, 0 if not.
SEE ALSO
ssl(3)HISTORY
SSL_get_version
() and
SSL_version
() first appeared in SSLeay
0.8.0 and have been available since OpenBSD 2.4.
SSL_is_dtls
() first appeared in OpenSSL 1.1.0
and has been available since OpenBSD 6.9.April 15, 2021 | Debian |