Visual FoxPro

DNS Query NS Records

See more DNS Examples

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

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

Visual FoxPro

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

lnSuccess = 0

loDns = CreateObject('Chilkat.Dns')

loJson = CreateObject('Chilkat.JsonObject')
loJson.EmitCompact = 0

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

? loJson.Emit()

* Sample response.
* Parsing code below..

* {
*   "answer": {
*     "ns": [
*       {
*         "name": "x.com",
*         "ttl": 86400,
*         "domain": "alexia.ns.cloudflare.com"
*       },
*       {
*         "name": "x.com",
*         "ttl": 86400,
*         "domain": "tosana.ns.cloudflare.com"
*       }
*     ]
*   }
* }

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

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

RELEASE loDns
RELEASE loJson