CC Base Monitor Client

local modem = peripheral.wrap("bottom")
local chest = peripheral.wrap("back")

local SERVER_CHANNEL = 1

local function sendItems(items)
    modem.transmit(2, 1, items)
    sleep(1)
end

local function main()
    while true do
        local items = chest.list()

        local event, peripheral_name, channel, reply_channel, message, distance = os.pullEvent("modem_message")
        if channel == SERVER_CHANNEL and message == "req items" then
            sendItems(items)
        end
    end
end

main()