1=pod
2
3=head1 NAME
4
5BIO_s_null - null data sink
6
7=head1 SYNOPSIS
8
9 #include <openssl/bio.h>
10
11 BIO_METHOD *	BIO_s_null(void);
12
13=head1 DESCRIPTION
14
15BIO_s_null() returns the null sink BIO method. Data written to
16the null sink is discarded, reads return EOF.
17
18=head1 NOTES
19
20A null sink BIO behaves in a similar manner to the Unix /dev/null
21device.
22
23A null bio can be placed on the end of a chain to discard any data
24passed through it.
25
26A null sink is useful if, for example, an application wishes to digest some
27data by writing through a digest bio but not send the digested data anywhere.
28Since a BIO chain must normally include a source/sink BIO this can be achieved
29by adding a null sink BIO to the end of the chain
30
31=head1 RETURN VALUES
32
33BIO_s_null() returns the null sink BIO method.
34
35=head1 SEE ALSO
36
37TBA
38