Swift

DNS Query TXT Records

See more DNS Examples

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

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

Swift

func chilkatTest() {
    var success: Bool = false

    let dns = CkoDns()!

    let json = CkoJsonObject()!
    json.emitCompact = false

    success = dns.query(recordType: "TXT", domain: "x.com", answer: json)
    if success == false {
        print("\(dns.lastErrorText!)")
        return
    }

    print("\(json.emit()!)")

    // Sample response.
    // Parsing code below..

    // {
    //   "answer": {
    //     "txt": [
    //       {
    //         "name": "x.com",
    //         "ttl": 300,
    //         "text": "kkdl3qb3tcrmdhfsm803p67r0my0svs8"
    //       },
    //       {
    //         "name": "x.com",
    //         "ttl": 300,
    //         "text": "v=spf1 ip4:199.16.156.128/26 ip4:199.59.150.64/26 include:_spf.google.com include:spf-008d0a01.pphosted.com -all"
    //       },
    //       {
    //         "name": "x.com",
    //         "ttl": 300,
    //         "text": "google-site-verification=8yQmoVhQedzlt36RPeQP41ytrEFk9aHEnde_xm0626g"
    //       },
    //       {
    //         "name": "x.com",
    //         "ttl": 300,
    //         "text": "google-site-verification=F6u9mGL--d2lbLljvH3b1UUgXtevQPdcamKr9c8914A"
    //       }
    //     ]
    //   }
    // }

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

    var name: String?
    var ttl: Int
    var text: String?

    var i: Int = 0
    var count_i: Int = json.size(ofArray: "answer.txt").intValue
    while i < count_i {
        json.i = i
        name = json.string(of: "answer.txt[i].name")
        ttl = json.int(of: "answer.txt[i].ttl").intValue
        text = json.string(of: "answer.txt[i].text")
        i = i + 1
    }


}