(Swift 2) DNS Query A Records

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

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

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func chilkatTest() {
    let dns = CkoDns()

    let json = CkoJsonObject()
    json.EmitCompact = false

    var success: Bool = dns.Query("A", domain: "microsoft.com", answer: json)
    if success == false {
        print("\(dns.LastErrorText)")
        return
    }

    print("\(json.Emit())")

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

    // {
    //   "answer": {
    //     "a": [
    //       {
    //         "name": "microsoft.com",
    //         "ttl": 1528,
    //         "ipv4": "20.112.250.133"
    //       },
    //       {
    //         "name": "microsoft.com",
    //         "ttl": 1528,
    //         "ipv4": "20.231.239.246"
    //       },
    //       {
    //         "name": "microsoft.com",
    //         "ttl": 1528,
    //         "ipv4": "20.76.201.171"
    //       },
    //       {
    //         "name": "microsoft.com",
    //         "ttl": 1528,
    //         "ipv4": "20.70.246.20"
    //       },
    //       {
    //         "name": "microsoft.com",
    //         "ttl": 1528,
    //         "ipv4": "20.236.44.162"
    //       }
    //     ]
    //   }
    // }

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

    var name: String?
    var ttl: Int
    var ipv4: String?

    var i: Int = 0
    var count_i: Int = json.SizeOfArray("answer.a").intValue
    while i < count_i {
        json.I = i
        name = json.StringOf("answer.a[i].name")
        ttl = json.IntOf("answer.a[i].ttl").intValue
        ipv4 = json.StringOf("answer.a[i].ipv4")
        i = i + 1
    }


}