HP OpenVMS Systems Documentation

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HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS > CRYPTO Application Programming Interface (API) Reference

BIO_s_null

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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

None.