client.lua

rednet.open("left")


local function registry()
    local name = arg[2]
    local id = os.getComputerID()
    local data = {name = name, id = id}
    local message = textutils.serialise(data)

    rednet.send(126, message, "dns_register")

    local senderID, message, protocol = rednet.receive("dns_ack")
    print(message)
end


local function getall()
    rednet.send(126, "", "dns_list")
    local senderID, message, protocol = rednet.receive("dns_list_response")
    print(message)

end


if #arg == 0 then
    print("No argements provided. Available commands:")
    print("1. reg [domain] - register a domain")
    print("2. getall - list all domains")
    return
end


if arg[1] == "reg" then
    registry()
elseif arg[1] == "getall" then
    getall()
end