1=pod 2 3=head1 NAME 4 5SSL_set_fd - connect the SSL object with a file descriptor 6 7=head1 SYNOPSIS 8 9 #include <openssl/ssl.h> 10 11 int SSL_set_fd(SSL *ssl, int fd); 12 int SSL_set_rfd(SSL *ssl, int fd); 13 int SSL_set_wfd(SSL *ssl, int fd); 14 15=head1 DESCRIPTION 16 17SSL_set_fd() sets the file descriptor B<fd> as the input/output facility 18for the TLS/SSL (encrypted) side of B<ssl>. B<fd> will typically be the 19socket file descriptor of a network connection. 20 21When performing the operation, a B<socket BIO> is automatically created to 22interface between the B<ssl> and B<fd>. The BIO and hence the SSL engine 23inherit the behaviour of B<fd>. If B<fd> is non-blocking, the B<ssl> will 24also have non-blocking behaviour. 25 26If there was already a BIO connected to B<ssl>, BIO_free() will be called 27(for both the reading and writing side, if different). 28 29SSL_set_rfd() and SSL_set_wfd() perform the respective action, but only 30for the read channel or the write channel, which can be set independently. 31 32=head1 RETURN VALUES 33 34The following return values can occur: 35 36=over 4 37 38=item 0 39 40The operation failed. Check the error stack to find out why. 41 42=item 1 43 44The operation succeeded. 45 46=back 47 48=head1 SEE ALSO 49 50L<SSL_get_fd(3)|SSL_get_fd(3)>, L<SSL_set_bio(3)|SSL_set_bio(3)>, 51L<SSL_connect(3)|SSL_connect(3)>, L<SSL_accept(3)|SSL_accept(3)>, 52L<SSL_shutdown(3)|SSL_shutdown(3)>, L<ssl(3)|ssl(3)> , L<bio(3)|bio(3)> 53 54=cut 55