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RedHat 9 (Linux i386) - man page for bio_f_null (redhat section 3)

BIO_f_null(3)							      OpenSSL							     BIO_f_null(3)

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 0.9.7a 2000-09-14 BIO_f_null(3)