| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | BIO_f_null - null filter
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| 6 |
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| 7 | =head1 SYNOPSIS
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| 8 |
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| 9 | #include <openssl/bio.h>
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| 10 |
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| 11 | const BIO_METHOD *BIO_f_null(void);
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| 12 |
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| 13 | =head1 DESCRIPTION
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| 14 |
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| 15 | BIO_f_null() returns the null filter BIO method. This is a filter BIO
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| 16 | that does nothing.
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| 17 |
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| 18 | All requests to a null filter BIO are passed through to the next BIO in
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| 19 | the chain: this means that a BIO chain containing a null filter BIO
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| 20 | behaves just as though the BIO was not there.
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| 21 |
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| 22 | =head1 NOTES
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| 23 |
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| 24 | As may be apparent a null filter BIO is not particularly useful.
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| 25 |
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| 26 | =head1 RETURN VALUES
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| 27 |
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| 28 | BIO_f_null() returns the null filter BIO method.
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| 29 |
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| 30 | =head1 COPYRIGHT
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| 31 |
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| 32 | Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 33 |
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| 34 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 35 | this file except in compliance with the License. You can obtain a copy
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| 36 | in the file LICENSE in the source distribution or at
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| 37 | L<https://www.openssl.org/source/license.html>.
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| 38 |
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| 39 | =cut
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