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)

1.0.2g                                             2016-03-01                       SSL_CTX_set_read_ahead(3SSL)