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Go

DNS Query CAA Records

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

Note: This example requires Chilkat v9.5.0.96 or later.

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Go
    success := false

    dns := chilkat.NewDns()

    json := chilkat.NewJsonObject()
    json.SetEmitCompact(false)

    success = dns.Query("CAA","zoom.us",json)
    if success == false {
        fmt.Println(dns.LastErrorText())
        dns.DisposeDns()
        json.DisposeJsonObject()
        return
    }

    fmt.Println(*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

    var name *string = new(string)
    var ttl int
    var flags int
    var tag *string = new(string)
    var value *string = new(string)

    i := 0
    count_i := json.SizeOfArray("answer.caa")
    for i < count_i {
        json.SetI(i)
        name = json.StringOf("answer.caa[i].name")
        ttl = json.IntOf("answer.caa[i].ttl")
        flags = json.IntOf("answer.caa[i].flags")
        tag = json.StringOf("answer.caa[i].tag")
        value = json.StringOf("answer.caa[i].value")
        i = i + 1
    }


    dns.DisposeDns()
    json.DisposeJsonObject()