Command:31

GET filename(s)

1  cmd type
2  cmd id // set by server
1  filename count // max 256

filename*

wl  filename length
c*  filename

Response to GET filesize(s) from device

1  cmd type
2  cmd id // set by server
1  file info count // max 256

file info[*]

wl  filename length
c*  filename
wl  file size
    positive value - real file size in bytes
    0 - file not exists
if file size != 0 then include file hash info