On Fri, Aug 21, 2020 at 05:05:51PM +0200, Detlef Vollmann wrote: > On 2020-08-20 21:44, Detlef Vollmann wrote: > > > > Is there any way to set the maximum fragment size for > > DTLS handshake with a BIO pair? > One solution is to set the MTU and the int_bio size to > exactly the same value. > Another option would be to use BIO_set_callback_ex() and send > the data to the socket after each BIO_write() into int_bio, > but the problem here is that BIO_set_data() cannot be used > as the ptr is already used for the peer address. There's always EX_DATA... -Ben