SSL_GET_FD
Section: OpenSSL (3)
Updated: 2021-03-26
Page Index
NAME
SSL_get_fd, SSL_get_rfd, SSL_get_wfd - get file descriptor linked to an SSL object
SYNOPSIS
#include <openssl/ssl.h>
int SSL_get_fd(const SSL *ssl);
int SSL_get_rfd(const SSL *ssl);
int SSL_get_wfd(const SSL *ssl);
DESCRIPTION
SSL_get_fd() returns the file descriptor which is linked to
ssl.
SSL_get_rfd() and
SSL_get_wfd() return the file descriptors for the
read or the write channel, which can be different. If the read and the
write channel are different,
SSL_get_fd() will return the file descriptor
of the read channel.
RETURN VALUES
The following return values can occur:
- -1
-
The operation failed, because the underlying BIO is not of the correct type
(suitable for file descriptors).
- >=0
-
The file descriptor linked to ssl.
SEE ALSO
SSL_set_fd(3),
ssl(7) ,
bio(7)
COPYRIGHT
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the ``License''). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.