NAME¶
SSL_CTX_set_read_ahead, SSL_CTX_set_default_read_ahead, SSL_CTX_get_read_ahead,
SSL_CTX_get_default_read_ahead, SSL_set_read_ahead, SSL_get_read_ahead -
manage whether to read as many input bytes as possible
SYNOPSIS¶
#include <openssl/ssl.h>
int SSL_get_read_ahead(const SSL *s);
void SSL_set_read_ahead(SSL *s, int yes);
#define SSL_CTX_get_default_read_ahead(ctx)
#define SSL_CTX_set_default_read_ahead(ctx,m)
#define SSL_CTX_get_read_ahead(ctx)
#define SSL_CTX_set_read_ahead(ctx,m)
DESCRIPTION¶
SSL_CTX_set_read_ahead() and
SSL_set_read_ahead() set whether we
should read as many input bytes as possible (for non-blocking reads) or not.
For example if
x bytes are currently required by OpenSSL, but
y
bytes are available from the underlying BIO (where
y >
x),
then OpenSSL will read all
y bytes into its buffer (providing that the
buffer is large enough) if reading ahead is on, or
x bytes otherwise.
The parameter
yes or
m should be 0 to ensure reading ahead is
off, or non zero otherwise.
SSL_CTX_set_default_read_ahead is a synonym for SSL_CTX_set_read_ahead, and
SSL_CTX_get_default_read_ahead is a synonym for SSL_CTX_get_read_ahead.
SSL_CTX_get_read_ahead() and
SSL_get_read_ahead() indicate whether
reading ahead has been set or not.
NOTES¶
These functions have no impact when used with DTLS. The return values for
SSL_CTX_get_read_head() and
SSL_get_read_ahead() are undefined
for DTLS.
RETURN VALUES¶
SSL_get_read_ahead and SSL_CTX_get_read_ahead return 0 if reading ahead is off,
and non zero otherwise.
SEE ALSO¶
ssl(3)