39 lines
741 B
Plaintext
39 lines
741 B
Plaintext
=pod
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=head1 NAME
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BIO_ctrl_get_read_request - Find out how much bytes are were requested from the BIO
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=head1 SYNOPSIS
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#include <openssl/bio.h>
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size_t BIO_ctrl_get_read_request(BIO *bio);
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=head1 DESCRIPTION
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BIO_ctrl_get_read_request() returns the number of bytes that were last
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requested from B<bio> by a BIO_read() operation. This is useful e.g. for
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BIO pairs, so that the application knows how much bytes to supply to B<bio>.
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=head1 BUGS
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When B<bio> is NULL, the OpenSSL library calls assert().
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=head1 RETURN VALUES
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The following return values can occur:
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=over 4
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=item E<gt>=0
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The number of bytes requested.
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=back
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=head1 SEE ALSO
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L<bio(3)|bio(3)>, L<BIO_s_mem(3)|BIO_s_mem(3)>,
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L<BIO_new_bio_pair(3)|BIO_new_bio_pair(3)>
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