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BIO_s_null.3
.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" BIO_s_null \- null data sink .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/bio.h> \& \& const BIO_METHOD *BIO_s_null(void); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method. Data written to the null sink is discarded, reads return \s-1EOF.\s0 .SH "NOTES" .IX Header "NOTES" A null sink \s-1BIO\s0 behaves in a similar manner to the Unix /dev/null device. .PP A null bio can be placed on the end of a chain to discard any data passed through it. .PP 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 \s-1BIO\s0 chain must normally include a source/sink \s-1BIO\s0 this can be achieved by adding a null sink \s-1BIO\s0 to the end of the chain .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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