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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Diffstat (limited to 'openssl/doc/crypto/bio.pod')
-rw-r--r--openssl/doc/crypto/bio.pod54
1 files changed, 54 insertions, 0 deletions
diff --git a/openssl/doc/crypto/bio.pod b/openssl/doc/crypto/bio.pod
new file mode 100644
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--- /dev/null
+++ b/openssl/doc/crypto/bio.pod
@@ -0,0 +1,54 @@
+=pod
+
+=head1 NAME
+
+bio - I/O abstraction
+
+=head1 SYNOPSIS
+
+ #include <openssl/bio.h>
+
+TBA
+
+
+=head1 DESCRIPTION
+
+A BIO is an I/O abstraction, it hides many of the underlying I/O
+details from an application. If an application uses a BIO for its
+I/O it can transparently handle SSL connections, unencrypted network
+connections and file I/O.
+
+There are two type of BIO, a source/sink BIO and a filter BIO.
+
+As its name implies a source/sink BIO is a source and/or sink of data,
+examples include a socket BIO and a file BIO.
+
+A filter BIO takes data from one BIO and passes it through to
+another, or the application. The data may be left unmodified (for
+example a message digest BIO) or translated (for example an
+encryption BIO). The effect of a filter BIO may change according
+to the I/O operation it is performing: for example an encryption
+BIO will encrypt data if it is being written to and decrypt data
+if it is being read from.
+
+BIOs can be joined together to form a chain (a single BIO is a chain
+with one component). A chain normally consist of one source/sink
+BIO and one or more filter BIOs. Data read from or written to the
+first BIO then traverses the chain to the end (normally a source/sink
+BIO).
+
+=head1 SEE ALSO
+
+L<BIO_ctrl(3)|BIO_ctrl(3)>,
+L<BIO_f_base64(3)|BIO_f_base64(3)>, L<BIO_f_buffer(3)|BIO_f_buffer(3)>,
+L<BIO_f_cipher(3)|BIO_f_cipher(3)>, L<BIO_f_md(3)|BIO_f_md(3)>,
+L<BIO_f_null(3)|BIO_f_null(3)>, L<BIO_f_ssl(3)|BIO_f_ssl(3)>,
+L<BIO_find_type(3)|BIO_find_type(3)>, L<BIO_new(3)|BIO_new(3)>,
+L<BIO_new_bio_pair(3)|BIO_new_bio_pair(3)>,
+L<BIO_push(3)|BIO_push(3)>, L<BIO_read(3)|BIO_read(3)>,
+L<BIO_s_accept(3)|BIO_s_accept(3)>, L<BIO_s_bio(3)|BIO_s_bio(3)>,
+L<BIO_s_connect(3)|BIO_s_connect(3)>, L<BIO_s_fd(3)|BIO_s_fd(3)>,
+L<BIO_s_file(3)|BIO_s_file(3)>, L<BIO_s_mem(3)|BIO_s_mem(3)>,
+L<BIO_s_null(3)|BIO_s_null(3)>, L<BIO_s_socket(3)|BIO_s_socket(3)>,
+L<BIO_set_callback(3)|BIO_set_callback(3)>,
+L<BIO_should_retry(3)|BIO_should_retry(3)>