File: daytimeclnt.lua

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luasocket 2.0-alpha-2
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-----------------------------------------------------------------------------
-- UDP sample: daytime protocol client
-- LuaSocket sample files
-- Author: Diego Nehab
-- RCS ID: $Id: daytimeclnt.lua,v 1.7 2003/08/16 00:06:04 diego Exp $
-----------------------------------------------------------------------------
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)
sent, err = udp:send("anything")
if err then print(err) exit() end
dgram, err = udp:receive()
if not dgram then print(err) exit() end
io.write(dgram)