multiple handshake messages in single fragment

[Yannay Alon-BAY004]

Hi

I plan to modify openssl to send several handshake messages in a single
tls fragment. (e.g. serverhello + serverkeyexchange + serverhellodone in
a PSK ciphersuite)

In the words of rfc 4346 section 6.2.1: "multiple client messages of the
same ContentType MAY be coalesced into a single TLSPlaintext record, "

Does anyone know if this is supported? fully, partially or planned to
be?

Thanks
Alon