do -- UDP
    local server = luasocket.Server("udp")
    server:Host("10.0.0.1", 888)

    function server:OnReceive(data, ip, port)
        server:Send("hi", ip, port)
    end

    local client = luasocket.Client("udp")
        client:Connect("10.0.0.1", 888)
        client:Send("hello")
        client:Send("hello")
        client:Send("hello")
        client:Send("hello")
end

do -- TCP
    local server = luasocket.Server("tcp")
        server:Host("10.0.0.1", 555)

        function server:OnReceieve(data, client)
            self:Send("hi", client:GetIP())
        end

    local client = luasocket.Client("tcp")
        client:Connect("10.0.0.1", 555)
        client:Send("hello\n")
        client:Send("hello\n")
        client:Send("hello\n")
        client:Send("hello\n")
end