BIO_f_null - null filter

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       Licensed under the Apache License 2.0 (the "License").  You may not use this file except in compliance
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3.5.0                                              2025-06-04                                   BIO_F_NULL(3SSL)

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.

       BIO_f_null - null filter

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

BIO_f_null() returns the null filter BIO method.

        #include <openssl/bio.h>

        const BIO_METHOD *BIO_f_null(void);