| =pod |
| |
| =head1 NAME |
| |
| BIO_s_null - null data sink |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/bio.h> |
| |
| const BIO_METHOD *BIO_s_null(void); |
| |
| =head1 DESCRIPTION |
| |
| BIO_s_null() returns the null sink BIO method. Data written to |
| the null sink is discarded, reads return EOF. |
| |
| =head1 NOTES |
| |
| A null sink BIO behaves in a similar manner to the Unix /dev/null |
| device. |
| |
| A null bio can be placed on the end of a chain to discard any data |
| passed through it. |
| |
| A null sink is useful if, for example, an application wishes to digest some |
| data by writing through a digest bio but not send the digested data anywhere. |
| Since a BIO chain must normally include a source/sink BIO this can be achieved |
| by adding a null sink BIO to the end of the chain |
| |
| =head1 RETURN VALUES |
| |
| BIO_s_null() returns the null sink BIO method. |
| |
| =head1 COPYRIGHT |
| |
| Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. |
| |
| Licensed under the Apache License 2.0 (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 |
| L<https://www.openssl.org/source/license.html>. |
| |
| =cut |
