(Visual FoxPro) 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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loDns
LOCAL loJson
LOCAL lnSuccess
LOCAL lcName
LOCAL lnTtl
LOCAL lcText
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("TXT","x.com",loJson)
IF (lnSuccess = 0) THEN
    ? loDns.LastErrorText
    RELEASE loDns
    RELEASE loJson
    CANCEL
ENDIF

? loJson.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

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

RELEASE loDns
RELEASE loJson