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.
