/* Pings the server of the current page.  It might restart a frozen transfer*/
ping='Miami:MiamiPing -c 3' /* Change here the command you use */

options results
address IBROWSE
query url
if upper(left(result,6))='FTP://' then ser=substr(result,7)
if upper(left(result,7))='HTTP://' then ser=substr(result,8)
l=pos('/',ser)
if l>0 then ser=left(ser,l-1)
address COMMAND ping ser