openssl/doc/ssl/SSL_get_fd.pod
Matt Caswell aafbe1ccd2 Document updates from wiki.
PR#3071

The primary changes made are:
- Updates to the "NAME" section of many pages to correctly reflect the
functions defined on those pages. This section is automatically parsed
by the util/extract-names.pl script, so if it is not correct then
running "man" will not correctly locate the right manual pages.
- Updates to take account of where functions are now deprecated
- Full documentation of the ec sub-library
- A number of other typo corrections and other minor tweaks
2013-06-12 23:42:08 +01:00

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=pod
=head1 NAME
SSL_get_fd, SSL_get_rfd, SSL_get_wfd - get file descriptor linked to an SSL object
=head1 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);
=head1 DESCRIPTION
SSL_get_fd() returns the file descriptor which is linked to B<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.
=head1 RETURN VALUES
The following return values can occur:
=over 4
=item -1
The operation failed, because the underlying BIO is not of the correct type
(suitable for file descriptors).
=item E<gt>=0
The file descriptor linked to B<ssl>.
=back
=head1 SEE ALSO
L<SSL_set_fd(3)|SSL_set_fd(3)>, L<ssl(3)|ssl(3)> , L<bio(3)|bio(3)>
=cut