ID =os.computerID()
rednet.open("back")
print("welcome! version:1.0")
print("your id is")
print(ID)
print("whats the target computer ID?")
targetID =tonumber(io.read())
print("please enter data path,include name")
data = io.read()
print("please enter name again")
name =io.read()
print("transfer begin...")
--io.open(data,"r")
--datas =io.read()
--print(#datas)

local file = fs.open( data, "r" )
    if file then
        local datas, err = file.readAll()

        if datas then
            rednet.send(targetID,name,true)
            local res,dat = rednet.receive()
            print("Recieved From Client: " .. res .. "[" .. dat .. "]")
            print("data name sent,begin data transfer...")
            ret = rednet.send(targetID,datas,true)
            print("data tranfering")
            local res,dat = rednet.receive()
            print("Recieved From Client: " .. res .. "[" .. dat .. "]")
        else
            error( err )
        end
    end




--print("you could stop the program by enter stop")
--stop =io.read()
--if stop =="stop" then
print("program stopped")
--os.shutdown()
--end