Manpages - BIO_s_null.3ssl

BIO_s_null - null data sink

#include <openssl/bio.h> const BIO_METHOD *BIO_s_null(void);

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

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

BIO_s_null() returns the null sink BIO method.

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Licensed under the OpenSSL license (the License). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.