Manpages - SSL_get_fd.3ssl

SSL_get_fd, SSL_get_rfd, SSL_get_wfd - get file descriptor linked to an SSL object

#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);

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.

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.

SSL_set_fd (3), ssl (7) , bio (7)

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.