FAQ

again if necessary.

Alternatively it can indicate that no more data is available and that EOF has
been reached.

If a memory BIO is to behave in the same way as a file this second behaviour
is needed. This must be done by calling:

   BIO_set_mem_eof_return(bio, 0);

See the manual pages for more details.


* Where are the declarations and implementations of d2i_X509() etc?

These are defined and implemented by macros of the form:


 DECLARE_ASN1_FUNCTIONS(X509) and IMPLEMENT_ASN1_FUNCTIONS(X509)

The implementation passes an ASN1 "template" defining the structure into an
ASN1 interpreter using generalised functions such as ASN1_item_d2i().


===============================================================================