PowerBuilder

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.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Dns
oleobject loo_Json
string ls_Name
integer li_Ttl
string ls_Text
integer i
integer li_Count_i

li_Success = 0

loo_Dns = create oleobject
li_rc = loo_Dns.ConnectToNewObject("Chilkat.Dns")
if li_rc < 0 then
    destroy loo_Dns
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.EmitCompact = 0

li_Success = loo_Dns.Query("TXT","x.com",loo_Json)
if li_Success = 0 then
    Write-Debug loo_Dns.LastErrorText
    destroy loo_Dns
    destroy loo_Json
    return
end if

Write-Debug loo_Json.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
li_Count_i = loo_Json.SizeOfArray("answer.txt")
do while i < li_Count_i
    loo_Json.I = i
    ls_Name = loo_Json.StringOf("answer.txt[i].name")
    li_Ttl = loo_Json.IntOf("answer.txt[i].ttl")
    ls_Text = loo_Json.StringOf("answer.txt[i].text")
    i = i + 1
loop


destroy loo_Dns
destroy loo_Json