| MsgDbPasswd {dbtype, passwd} => (OpenSSL.writeInt (bio, 28);
OpenSSL.writeString (bio, dbtype);
OpenSSL.writeString (bio, passwd))
+ | MsgShutdown => OpenSSL.writeInt (bio, 29)
fun checkIt v =
case v of
(SOME dbtype, SOME passwd) =>
SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
| _ => NONE)
+ | 29 => SOME MsgShutdown
| _ => NONE)
end