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✏️ Editing: broadcast-dns-service-discovery.nse

local dnssd = require "dnssd"
local stdnse = require "stdnse"

description=[[
Attempts to discover hosts' services using the DNS Service Discovery protocol.  It sends a multicast DNS-SD query and collects all the responses.

The script first sends a query for _services._dns-sd._udp.local to get a
list of services. It then sends a followup query for each one to try to
get more information.
]]

-- Version 0.1
-- Created 10/29/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>

author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"broadcast", "safe"}

prerule = function() return true end

action = function()
  local helper = dnssd.Helper:new( )
  helper:setMulticast(true)

local status, result = helper:queryServices()
  if ( status ) then
    return stdnse.format_output(true, result)
  end
end

MR SKB