net = {}
net.id = computer.address():sub(1,8)
net.np = 4957
net.tm = {}
function net.send(id,po,msg) -- id, port, message
 event.push("sendmsg",id,po,msg)
end
if cdlib then
spawn("copper.0 daemon",function() print(pcall(function ()
 local pt = {}
 for a,t in component.list("modem") do
  table.insert(net.tm,component.proxy(a))
  component.proxy(a).open(net.np)
 end
 while true do
  local ev = {event.pull()}
  if ev[1] == "rsendmsg" then
   dst,data = ev[2],ev[3]
   for k,v in ipairs(net.tm) do
    v.broadcast(net.np,"copper",cdlib.encode(0,net.id,dst,data))
   end
  elseif ev[1] == "modem_message" and ev[4] == net.np and ev[6] == "copper" then
   local hops,src,dst,data = cdlib.decode(ev[7])
   if not pt[ev[7]:sub(2)] then
    pt[ev[7]:sub(2)] = os.time()
    if dst == net.id then
     event.push("net_rmsg",src,data)
    else
     for k,v in ipairs(net.tm) do
      v.broadcast(net.np,cdlib.encode(hops+1,src,dst,data))
     end
    end
   end
  end
  if #pt > 63 then
   local cot = os.time()
   for k,v in pairs(pt) do
    if v < cot-5 then
     pt[k] = nil
    end
   end
  end
 end
end)) end)
end