xref: /openssl/doc/man3/BIO_f_null.pod (revision 4746f25a)
1=pod
2
3=head1 NAME
4
5BIO_f_null - null filter
6
7=head1 SYNOPSIS
8
9 #include <openssl/bio.h>
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11 const BIO_METHOD *BIO_f_null(void);
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13=head1 DESCRIPTION
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15BIO_f_null() returns the null filter BIO method. This is a filter BIO
16that does nothing.
17
18All requests to a null filter BIO are passed through to the next BIO in
19the chain: this means that a BIO chain containing a null filter BIO
20behaves just as though the BIO was not there.
21
22=head1 NOTES
23
24As may be apparent a null filter BIO is not particularly useful.
25
26=head1 RETURN VALUES
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28BIO_f_null() returns the null filter BIO method.
29
30=head1 COPYRIGHT
31
32Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
33
34Licensed under the Apache License 2.0 (the "License").  You may not use
35this file except in compliance with the License.  You can obtain a copy
36in the file LICENSE in the source distribution or at
37L<https://www.openssl.org/source/license.html>.
38
39=cut
40