cc router

local ins = "left"
local out = "bottom"
rednet.open(ins)
rednet.open(out)
-- data coming in formatted as "toId#data"
while (true) do
    local e, side, chan, repl, msg, dis = os.pullEventRaw("modem_message")
    if (side == ins) then
        local data = string.sub(msg, string.find(msg, "#") + 1)
        local destId = string.sub(msg, 0, string.find(msg, "#") - 1)
        print("routing " .. data .. " from " .. chan .. " to " .. destId)
        peripheral.call(out, "transmit", tonumber(destId), repl, data)
    end
    if (side == out) then
        local data = string.sub(msg, string.find(msg, "#") + 1)
        local destId = string.sub(msg, 0, string.find(msg, "#") - 1)
        print("routing " .. data .. " from " .. chan .. " to " .. destId)
        peripheral.call(ins, "transmit", tonumber(destId), repl, data)
    end
end