(VB.NET) RDAP Domain Lookup using rdap.org

Demonstrates doing an RDAP domain lookup using the rdap.org public RDAP server.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http

' Send HTTP requests to https://rdap.org/<type>/<object>, where <type> is the object type (one of domain, ip, autnum, entity etc)
' and <object> is the object identifier (eg example.com, 192.168.0.1, 64496, etc).

' For example, here's a lookup for "oracle.com"
Dim sbResponse As New Chilkat.StringBuilder
Dim success As Boolean = http.QuickGetSb("https://rdap.org/domain/oracle.com",sbResponse)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim statusCode As Integer = http.LastStatus
If (statusCode <> 200) Then
    Debug.WriteLine("Error response:")
    Debug.WriteLine(sbResponse.GetAsString())
    Debug.WriteLine("status code: " & statusCode)
    Exit Sub
End If


' Load the JSON response and examine..

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

Dim json As New Chilkat.JsonObject
json.LoadSb(sbResponse)
json.EmitCompact = False
Debug.WriteLine(json.Emit())

' Here's a sample response, and the parsing code generated from the above online tool follows..

' {
'   "objectClassName": "domain",
'   "handle": "607513_DOMAIN_COM-VRSN",
'   "ldhName": "ORACLE.COM",
'   "links": [
'     {
'       "value": "https:\/\/rdap.verisign.com\/com\/v1\/domain\/ORACLE.COM",
'       "rel": "self",
'       "href": "https:\/\/rdap.verisign.com\/com\/v1\/domain\/ORACLE.COM",
'       "type": "application\/rdap+json"
'     },
'     {
'       "value": "https:\/\/rdap.markmonitor.com\/rdap\/domain\/ORACLE.COM",
'       "rel": "related",
'       "href": "https:\/\/rdap.markmonitor.com\/rdap\/domain\/ORACLE.COM",
'       "type": "application\/rdap+json"
'     }
'   ],
'   "status": [
'     "client delete prohibited",
'     "client transfer prohibited",
'     "client update prohibited",
'     "server delete prohibited",
'     "server transfer prohibited",
'     "server update prohibited"
'   ],
'   "entities": [
'     {
'       "objectClassName": "entity",
'       "handle": "292",
'       "roles": [
'         "registrar"
'       ],
'       "publicIds": [
'         {
'           "type": "IANA Registrar ID",
'           "identifier": "292"
'         }
'       ],
'       "vcardArray": [
'         "vcard",
'         [
'           [
'             "version",
'             {},
'             "text",
'             "4.0"
'           ],
'           [
'             "fn",
'             {},
'             "text",
'             "MarkMonitor Inc."
'           ]
'         ]
'       ],
'       "entities": [
'         {
'           "objectClassName": "entity",
'           "roles": [
'             "abuse"
'           ],
'           "vcardArray": [
'             "vcard",
'             [
'               [
'                 "version",
'                 {},
'                 "text",
'                 "4.0"
'               ],
'               [
'                 "fn",
'                 {},
'                 "text",
'                 ""
'               ],
'               [
'                 "tel",
'                 {
'                   "type": "voice"
'                 },
'                 "uri",
'                 "tel:+1.2086851750"
'               ],
'               [
'                 "email",
'                 {},
'                 "text",
'                 "abusecomplaints@markmonitor.com"
'               ]
'             ]
'           ]
'         }
'       ]
'     }
'   ],
'   "events": [
'     {
'       "eventAction": "registration",
'       "eventDate": "1988-12-02T05:00:00Z"
'     },
'     {
'       "eventAction": "expiration",
'       "eventDate": "2025-12-01T05:00:00Z"
'     },
'     {
'       "eventAction": "last changed",
'       "eventDate": "2024-10-30T09:32:52Z"
'     },
'     {
'       "eventAction": "last update of RDAP database",
'       "eventDate": "2024-11-26T14:11:14Z"
'     }
'   ],
'   "secureDNS": {
'     "delegationSigned": false
'   },
'   "nameservers": [
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "A1-160.AKAM.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "A11-66.AKAM.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "A13-65.AKAM.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "A18-67.AKAM.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "NS1.P201.DNS.ORACLECLOUD.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "NS2.P201.DNS.ORACLECLOUD.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "NS3.P201.DNS.ORACLECLOUD.NET"
'     },
'     {
'       "objectClassName": "nameserver",
'       "ldhName": "NS4.P201.DNS.ORACLECLOUD.NET"
'     }
'   ],
'   "rdapConformance": [
'     "rdap_level_0",
'     "icann_rdap_technical_implementation_guide_0",
'     "icann_rdap_response_profile_0"
'   ],
'   "notices": [
'     {
'       "title": "Terms of Use",
'       "description": [
'         "Service subject to Terms of Use."
'       ],
'       "links": [
'         {
'           "href": "https:\/\/www.verisign.com\/domain-names\/registration-data-access-protocol\/terms-service\/index.xhtml",
'           "type": "text\/html"
'         }
'       ]
'     },
'     {
'       "title": "Status Codes",
'       "description": [
'         "For more information on domain status codes, please visit https:\/\/icann.org\/epp"
'       ],
'       "links": [
'         {
'           "href": "https:\/\/icann.org\/epp",
'           "type": "text\/html"
'         }
'       ]
'     },
'     {
'       "title": "RDDS Inaccuracy Complaint Form",
'       "description": [
'         "URL of the ICANN RDDS Inaccuracy Complaint Form: https:\/\/icann.org\/wicf"
'       ],
'       "links": [
'         {
'           "href": "https:\/\/icann.org\/wicf",
'           "type": "text\/html"
'         }
'       ]
'     }
'   ]
' }


Dim value As String
Dim rel As String
Dim href As String
Dim v_type As String
Dim strVal As String
Dim j As Integer
Dim count_j As Integer
Dim identifier As String
Dim k As Integer
Dim count_k As Integer
Dim json1 As Chilkat.JsonObject
Dim i1 As Integer
Dim count_i1 As Integer
Dim j1 As Integer
Dim count_j1 As Integer
Dim eventAction As String
Dim eventDate As String
Dim title As String

Dim objectClassName As String = json.StringOf("objectClassName")
Dim handle As String = json.StringOf("handle")
Dim ldhName As String = json.StringOf("ldhName")
Dim DelegationSigned As Boolean = json.BoolOf("secureDNS.delegationSigned")
Dim i As Integer = 0
Dim count_i As Integer = json.SizeOfArray("links")
While i < count_i
    json.I = i
    value = json.StringOf("links[i].value")
    rel = json.StringOf("links[i].rel")
    href = json.StringOf("links[i].href")
    v_type = json.StringOf("links[i].type")
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("status")
While i < count_i
    json.I = i
    strVal = json.StringOf("status[i]")
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("entities")
While i < count_i
    json.I = i
    objectClassName = json.StringOf("entities[i].objectClassName")
    handle = json.StringOf("entities[i].handle")
    j = 0
    count_j = json.SizeOfArray("entities[i].roles")
    While j < count_j
        json.J = j
        strVal = json.StringOf("entities[i].roles[j]")
        j = j + 1
    End While
    j = 0
    count_j = json.SizeOfArray("entities[i].publicIds")
    While j < count_j
        json.J = j
        v_type = json.StringOf("entities[i].publicIds[j].type")
        identifier = json.StringOf("entities[i].publicIds[j].identifier")
        j = j + 1
    End While
    j = 0
    count_j = json.SizeOfArray("entities[i].vcardArray")
    While j < count_j
        json.J = j
        strVal = json.StringOf("entities[i].vcardArray[j]")
        k = 0
        count_k = json.SizeOfArray("entities[i].vcardArray[j]")
        While k < count_k
            json.K = k

            json1 = json.ObjectOf("entities[i].vcardArray[j][k]")
            i1 = 0
            count_i1 = json1.SizeOfArray("")
            While i1 < count_i1
                json1.I = i1
                strVal = json1.StringOf("[i]")
                i1 = i1 + 1
            End While

            k = k + 1
        End While
        j = j + 1
    End While
    j = 0
    count_j = json.SizeOfArray("entities[i].entities")
    While j < count_j
        json.J = j
        objectClassName = json.StringOf("entities[i].entities[j].objectClassName")
        k = 0
        count_k = json.SizeOfArray("entities[i].entities[j].roles")
        While k < count_k
            json.K = k
            strVal = json.StringOf("entities[i].entities[j].roles[k]")
            k = k + 1
        End While
        k = 0
        count_k = json.SizeOfArray("entities[i].entities[j].vcardArray")
        While k < count_k
            json.K = k
            strVal = json.StringOf("entities[i].entities[j].vcardArray[k]")

            json1 = json.ObjectOf("entities[i].entities[j].vcardArray[k]")
            i1 = 0
            count_i1 = json1.SizeOfArray("")
            While i1 < count_i1
                json1.I = i1
                j1 = 0
                count_j1 = json1.SizeOfArray("[i]")
                While j1 < count_j1
                    json1.J = j1
                    strVal = json1.StringOf("[i][j]")
                    j1 = j1 + 1
                End While
                i1 = i1 + 1
            End While

            k = k + 1
        End While
        j = j + 1
    End While
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("events")
While i < count_i
    json.I = i
    eventAction = json.StringOf("events[i].eventAction")
    eventDate = json.StringOf("events[i].eventDate")
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("nameservers")
While i < count_i
    json.I = i
    objectClassName = json.StringOf("nameservers[i].objectClassName")
    ldhName = json.StringOf("nameservers[i].ldhName")
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("rdapConformance")
While i < count_i
    json.I = i
    strVal = json.StringOf("rdapConformance[i]")
    i = i + 1
End While
i = 0
count_i = json.SizeOfArray("notices")
While i < count_i
    json.I = i
    title = json.StringOf("notices[i].title")
    j = 0
    count_j = json.SizeOfArray("notices[i].description")
    While j < count_j
        json.J = j
        strVal = json.StringOf("notices[i].description[j]")
        j = j + 1
    End While
    j = 0
    count_j = json.SizeOfArray("notices[i].links")
    While j < count_j
        json.J = j
        href = json.StringOf("notices[i].links[j].href")
        v_type = json.StringOf("notices[i].links[j].type")
        j = j + 1
    End While
    i = i + 1
End While