1BIO_F_NULL(3)                       OpenSSL                      BIO_F_NULL(3)
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NAME

6       BIO_f_null - null filter
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SYNOPSIS

9        #include <openssl/bio.h>
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11        const BIO_METHOD *BIO_f_null(void);
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DESCRIPTION

14       BIO_f_null() returns the null filter BIO method. This is a filter BIO
15       that does nothing.
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17       All requests to a null filter BIO are passed through to the next BIO in
18       the chain: this means that a BIO chain containing a null filter BIO
19       behaves just as though the BIO was not there.
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NOTES

22       As may be apparent a null filter BIO is not particularly useful.
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RETURN VALUES

25       BIO_f_null() returns the null filter BIO method.
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28       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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30       Licensed under the OpenSSL license (the "License").  You may not use
31       this file except in compliance with the License.  You can obtain a copy
32       in the file LICENSE in the source distribution or at
33       <https://www.openssl.org/source/license.html>.
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371.1.1l                            2021-09-15                     BIO_F_NULL(3)
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