when you say check the cap_duplex cap, this is the way I did it:
rc = DSCap(twident,src,dg_control,dat_cap,msg_get,twcap.cap_duplex(1))
if rc <> twrc.success then
closeSRC()
return
end if
so if that returns success then it supports the duplex (1passduplex) right?
Then set the CAP_ENABLEDUPLEX -> 1
Thanks,
Justin