BIO_s_null(3ssl)

NAME

BIO_s_null - null data sink

SYNOPSIS

#include <openssl/bio.h>

BIO_METHOD *   BIO_s_null(void);

DESCRIPTION

BIO_s_null() returns the null sink BIO method. Data written to the null sink is discarded, reads return EOF.

NOTES

A null sink BIO behaves in a similar manner to the Unix /dev/null
device.

A null bio can be placed on the end of a chain to discard any data
passed through it.

A null sink is useful if, for example, an application wishes to digest some data by writing through a digest bio but not send the digested
data anywhere. Since a BIO chain must normally include a source/sink
BIO this can be achieved by adding a null sink BIO to the end of the
chain

RETURN VALUES

BIO_s_null() returns the null sink BIO method.

SEE ALSO

TBA
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