168651Skris=pod 268651Skris 368651Skris=head1 NAME 468651Skris 568651SkrisBIO_s_null - null data sink 668651Skris 768651Skris=head1 SYNOPSIS 868651Skris 968651Skris #include <openssl/bio.h> 1068651Skris 1168651Skris BIO_METHOD * BIO_s_null(void); 1268651Skris 1368651Skris=head1 DESCRIPTION 1468651Skris 1568651SkrisBIO_s_null() returns the null sink BIO method. Data written to 1668651Skristhe null sink is discarded, reads return EOF. 1768651Skris 1868651Skris=head1 NOTES 1968651Skris 2068651SkrisA null sink BIO behaves in a similar manner to the Unix /dev/null 2168651Skrisdevice. 2268651Skris 2368651SkrisA null bio can be placed on the end of a chain to discard any data 2468651Skrispassed through it. 2568651Skris 2668651SkrisA null sink is useful if, for example, an application wishes to digest some 2768651Skrisdata by writing through a digest bio but not send the digested data anywhere. 2868651SkrisSince a BIO chain must normally include a source/sink BIO this can be achieved 2968651Skrisby adding a null sink BIO to the end of the chain 3068651Skris 3168651Skris=head1 RETURN VALUES 3268651Skris 3368651SkrisBIO_s_null() returns the null sink BIO method. 3468651Skris 3568651Skris=head1 SEE ALSO 3668651Skris 3768651SkrisTBA 38