-----------------------------------------------------------------------------

-- UDP sample: daytime protocol client

-- LuaSocket sample files

-- Author: Diego Nehab

-----------------------------------------------------------------------------

local socket = require"socket"

host = host or "127.0.0.1"

port = port or 13

if arg then

    host = arg[1] or host

    port = arg[2] or port

end

host = socket.dns.toip(host)

udp = socket.udp()

print("Using host '" ..host.. "' and port " ..port.. "...")

udp:setpeername(host, port)

udp:settimeout(3)

sent, err = udp:send("anything")

if err then print(err) os.exit() end

dgram, err = udp:receive()

if not dgram then print(err) os.exit() end

io.write(dgram)