Lua Requires Chilkat v9.5.0.96+

DNS Query CAA Records

See more DNS Examples

Shows how to perform a DNS query to retrieve CAA records. Lua

local chilkat = require("chilkat")

local dns = chilkat.Dns.new()

local json = chilkat.JsonObject.new()
json.emit_compact = false

local success = dns:query("CAA", "zoom.us", json)
if not success then
    print(dns.last_error_text)
    return
end

print(json:emit())

-- Sample response.
-- Parsing code below..

-- {
--   "answer": {
--     "caa": [
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "iodef",
--         "value": "mailto:security@zoom.us"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "amazon.com"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "digicert.com"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "godaddy.com"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "letsencrypt.org"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "pki.goog"
--       },
--       {
--         "name": "zoom.us",
--         "ttl": 300,
--         "flags": 0,
--         "tag": "issue",
--         "value": "sectigo.com"
--       }
--     ]
--   }
-- }

-- Use this online tool to generate parsing code from sample JSON:
-- Generate Parsing Code from JSON

local name = ""
local ttl = 0
local flags = 0
local tag = ""
local value = ""

local i = 0
local count_i = json:size_of_array("answer.caa")
while i < count_i do
    json.i = i
    name = json:string_of("answer.caa[i].name")
    ttl = json:int_of("answer.caa[i].ttl")
    flags = json:int_of("answer.caa[i].flags")
    tag = json:string_of("answer.caa[i].tag")
    value = json:string_of("answer.caa[i].value")
    i = i + 1
end