1*1dcdf01fSchristos=pod
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3*1dcdf01fSchristos=head1 NAME
4*1dcdf01fSchristos
5*1dcdf01fSchristosBIO_f_null - null filter
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7*1dcdf01fSchristos=head1 SYNOPSIS
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9*1dcdf01fSchristos #include <openssl/bio.h>
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11*1dcdf01fSchristos const BIO_METHOD *BIO_f_null(void);
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13*1dcdf01fSchristos=head1 DESCRIPTION
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15*1dcdf01fSchristosBIO_f_null() returns the null filter BIO method. This is a filter BIO
16*1dcdf01fSchristosthat does nothing.
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18*1dcdf01fSchristosAll requests to a null filter BIO are passed through to the next BIO in
19*1dcdf01fSchristosthe chain: this means that a BIO chain containing a null filter BIO
20*1dcdf01fSchristosbehaves just as though the BIO was not there.
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22*1dcdf01fSchristos=head1 NOTES
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24*1dcdf01fSchristosAs may be apparent a null filter BIO is not particularly useful.
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26*1dcdf01fSchristos=head1 RETURN VALUES
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28*1dcdf01fSchristosBIO_f_null() returns the null filter BIO method.
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30*1dcdf01fSchristos=head1 COPYRIGHT
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32*1dcdf01fSchristosCopyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
33*1dcdf01fSchristos
34*1dcdf01fSchristosLicensed under the OpenSSL license (the "License").  You may not use
35*1dcdf01fSchristosthis file except in compliance with the License.  You can obtain a copy
36*1dcdf01fSchristosin the file LICENSE in the source distribution or at
37*1dcdf01fSchristosL<https://www.openssl.org/source/license.html>.
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39*1dcdf01fSchristos=cut
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