openssl/doc/ssl/SSL_set_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_set_fd, SSL_set_rfd, SSL_set_wfd - connect the SSL object with a file descriptor
=head1 SYNOPSIS
#include <openssl/ssl.h>
int SSL_set_fd(SSL *ssl, int fd);
int SSL_set_rfd(SSL *ssl, int fd);
int SSL_set_wfd(SSL *ssl, int fd);
=head1 DESCRIPTION
SSL_set_fd() sets the file descriptor B<fd> as the input/output facility
for the TLS/SSL (encrypted) side of B<ssl>. B<fd> will typically be the
socket file descriptor of a network connection.
When performing the operation, a B<socket BIO> is automatically created to
interface between the B<ssl> and B<fd>. The BIO and hence the SSL engine
inherit the behaviour of B<fd>. If B<fd> is non-blocking, the B<ssl> will
also have non-blocking behaviour.
If there was already a BIO connected to B<ssl>, BIO_free() will be called
(for both the reading and writing side, if different).
SSL_set_rfd() and SSL_set_wfd() perform the respective action, but only
for the read channel or the write channel, which can be set independently.
=head1 RETURN VALUES
The following return values can occur:
=over 4
=item 0
The operation failed. Check the error stack to find out why.
=item 1
The operation succeeded.
=back
=head1 SEE ALSO
L<SSL_get_fd(3)|SSL_get_fd(3)>, L<SSL_set_bio(3)|SSL_set_bio(3)>,
L<SSL_connect(3)|SSL_connect(3)>, L<SSL_accept(3)|SSL_accept(3)>,
L<SSL_shutdown(3)|SSL_shutdown(3)>, L<ssl(3)|ssl(3)> , L<bio(3)|bio(3)>
=cut