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 Apache License 2.0 (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>.