Repeater

local function printUsage()
  print( "Usages: repeater <ID1> <ID2>" )
end

local tArgs = { ... }
if #tArgs < 2 then
  printUsage()
  return
end

local ID1,ID2 = tonumber(tArgs[1]), tonumber(tArgs[2])
if ID1 == nil or ID2 == nil or ID1==ID2 then
  printUsage()
  return
end

if ip.open() then
  print( "Connection ID "..ID1.." and "..ID2 )
  local nServed1,nServed2 = 0, 0
  while true do
    sender,message,distance = rednet.receive()
    if sender==ID1 then
      rednet.send(ID2, message)
      nServed1 = nServed1 + 1
    end
    if sender==ID2 then
      rednet.send(ID1, message)
      nServed2 = nServed2 + 1
    end
    write( nServed1.." received from "..ID1.." and "..nServed2.." received from "..ID2 )
    local x,y = term.getCursorPos()
    term.setCursorPos(1,y)
  end
end