(Xojo Plugin) 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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Dim dns As New Chilkat.Dns

Dim json As New Chilkat.JsonObject
json.EmitCompact = False

Dim success As Boolean
success = dns.Query("A","microsoft.com",json)
If (success = False) Then
    System.DebugLog(dns.LastErrorText)
    Return
End If

System.DebugLog(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

Dim name As String
Dim ttl As Int32
Dim ipv4 As String

Dim i As Int32
i = 0
Dim count_i As Int32
count_i = json.SizeOfArray("answer.a")
While i < count_i
    json.I = i
    name = json.StringOf("answer.a[i].name")
    ttl = json.IntOf("answer.a[i].ttl")
    ipv4 = json.StringOf("answer.a[i].ipv4")
    i = i + 1
Wend