- NAME
- SYNOPSIS
- DESCRIPTION
- NOTES
- RETURN VALUES
- SEE ALSO

# NAME

BIO_f_null - null filter

# SYNOPSIS

     #include <openssl/bio.h>

     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.

# SEE ALSO

TBA