Rednet repeater

term.clear()
term.setCursorPos(1,1)
local function connect()
for _,s in ipairs(rs.getSides()) do
  if peripheral.isPresent(s) and peripheral.getType(s) == "modem" then
   rednet.open(s)
   return true
  end
end
term.clear()
print("ERROR")
print("No modem found")
print("Aborting")
sleep(3)
os.shutdown()
return false
end
connect()
i = 0
while true do
term.clear()
term.setCursorPos(1,1)
print (i.." messages passed")
senderId, message, distance = rednet.receive()
rednet.send(21,""..message)
i = i+1
end

term.clear()
term.setCursorPos(1,1)
local function connect()
for _,s in ipairs(rs.getSides()) do
  if peripheral.isPresent(s) and peripheral.getType(s) == "modem" then
   rednet.open(s)
   return true
  end
end
term.clear()
print("ERROR")
print("No modem found")
print("Aborting")
sleep(3)
os.shutdown()
return false
end
connect()
i = 0
while true do
term.clear()
term.setCursorPos(1,1)
print (i.." messages passed")
senderId, message, distance = rednet.receive()
rednet.broadcast(""..message)
i = i+1
end