luasocket/samples/echoclnt.lua

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-----------------------------------------------------------------------------
-- UDP sample: echo protocol client
-- LuaSocket sample files
-- Author: Diego Nehab
-- RCS ID: $Id$
-----------------------------------------------------------------------------
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host = host or "localhost"
port = port or 7
if arg then
host = arg[1] or host
port = arg[2] or port
end
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host = socket.toip(host)
udp, err = socket.udp()
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if not udp then print(err) exit() end
err = udp:setpeername(host, port)
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if err then print(err) exit() end
print("Using host '" ..host.. "' and port " .. port .. "...")
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while 1 do
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line = io.read()
if not line then os.exit() end
err = udp:send(line)
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if err then print(err) os.exit() end
dgram, err = udp:receive()
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if not dgram then print(err) os.exit() end
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print(dgram)
end