(Visual FoxPro) DNS Query AAAA Records

See more DNS Examples

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

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

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LOCAL loDns
LOCAL loJson
LOCAL lnSuccess
LOCAL lcName
LOCAL lnTtl
LOCAL lcIpv6
LOCAL i
LOCAL lnCount_i

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Dns')
loDns = CreateObject('Chilkat.Dns')

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.EmitCompact = 0

lnSuccess = loDns.Query("AAAA","x.com",loJson)
IF (lnSuccess = 0) THEN
    ? loDns.LastErrorText
    RELEASE loDns
    RELEASE loJson
    CANCEL
ENDIF

? loJson.Emit()

* Sample response.
* Parsing code below..

* {
*   "answer": {
*     "aaaa": [
*       {
*         "name": "x.com",
*         "ttl": 229,
*         "ipv6": "2606:4700:4400::ac40:96f2"
*       },
*       {
*         "name": "x.com",
*         "ttl": 229,
*         "ipv6": "2606:4700:4400::6812:250e"
*       }
*     ]
*   }
* }

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

i = 0
lnCount_i = loJson.SizeOfArray("answer.aaaa")
DO WHILE i < lnCount_i
    loJson.I = i
    lcName = loJson.StringOf("answer.aaaa[i].name")
    lnTtl = loJson.IntOf("answer.aaaa[i].ttl")
    lcIpv6 = loJson.StringOf("answer.aaaa[i].ipv6")
    i = i + 1
ENDDO

RELEASE loDns
RELEASE loJson