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NAME

       BIO_f_null - null filter

SYNOPSIS

        #include <openssl/bio.h>

        const BIO_METHOD *     BIO_f_null(void);

DESCRIPTION

       BIO_f_null() returns the null filter BIO method. This is a filter BIO that does nothing.

       All requests to a null filter BIO are passed through to the next BIO in the chain: this
       means that a BIO chain containing a null filter BIO behaves just as though the BIO was not
       there.

NOTES

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

RETURN VALUES

       BIO_f_null() returns the null filter BIO method.

COPYRIGHT

       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (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 <https://www.openssl.org/source/license.html>.