BIO_S_NULL(3) BSD Library Functions Manual BIO_S_NULL(3)NAMEBIO_s_null — null data sink
SYNOPSIS
#include <openssl/bio.h>
BIO_METHOD *
BIO_s_null(void);
DESCRIPTIONBIO_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 null(4) 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 VALUESBIO_s_null() returns the null sink BIO method.
BSD April 26, 2024 BSD
