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Xojo Plugin Examples

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(Xojo Plugin) Geolocation of IP Address

To get information about an IP address, there are various public web services that can be queried. I would also guess that paid-for services exist. In any case, it's likely the service is accessible via a REST API. This example demonstrates a few public geolocation API's, each of which may have limitations on the number of queries per hour/day/etc.

Also, please note that this example was created on 23-Sep-2016. As time goes by, the public services referenced by this example may have changed or disappeared entirely. Make sure to do your research before assuming this example will work. The intent of this example is to give a flavor of what might be possible.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

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

//  The IP address used in this example is 104.40.211.35
Dim ipAddress As String
ipAddress = "104.40.211.35"

//  First we'll try the service at freegeoip.net.
//  They have a limit of 10,000 queries per hour, and also
//  provide free source code to run your own server.

Dim rest As New Chilkat.Rest

//  Connect to freegeoip.net
Dim bTls As Boolean
bTls = False
Dim port As Int32
port = 80
Dim bAutoReconnect As Boolean
bAutoReconnect = True
Dim success As Boolean
success = rest.Connect("freegeoip.net",port,bTls,bAutoReconnect)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  Query the IP address to return JSON.
Dim responseJson As String
responseJson = rest.FullRequestNoBody("GET","/json/104.40.211.35")
If (rest.LastMethodSuccess <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  Just in case we are still connected..
Dim maxWaitMs As Int32
maxWaitMs = 10
success = rest.Disconnect(maxWaitMs)

Dim json As New Chilkat.JsonObject
success = json.Load(responseJson)
json.EmitCompact = False

System.DebugLog(json.Emit())

//  The JSON we get back looks like this:
//  {
//    "ip": "104.40.211.35",
//    "country_code": "US",
//    "country_name": "United States",
//    "region_code": "WA",
//    "region_name": "Washington",
//    "city": "Redmond",
//    "zip_code": "98052",
//    "time_zone": "America/Los_Angeles",
//    "latitude": 47.6801,
//    "longitude": -122.1206,
//    "metro_code": 819
//  }

//  Examine a few bits of information:
System.DebugLog("country name = " + json.StringOf("country_name"))
System.DebugLog("country code = " + json.StringOf("country_code"))

//  -----------------------------------------------------
//  Now to use ip-api.com, which is mostly the same..

success = rest.Connect("ip-api.com",port,bTls,bAutoReconnect)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  Query the IP address to return JSON.
responseJson = rest.FullRequestNoBody("GET","/json/104.40.211.35")
If (rest.LastMethodSuccess <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  Just in case we are still connected..
success = rest.Disconnect(maxWaitMs)

success = json.Load(responseJson)
json.EmitCompact = False

System.DebugLog(json.Emit())

//  The JSON we get back looks like this:
//  This is very strange, because the two services don't agree.
//  {
//    "as": "AS8075 Microsoft Corporation",
//    "city": "Amsterdam",
//    "country": "Netherlands",
//    "countryCode": "NL",
//    "isp": "Microsoft Corporation",
//    "lat": 52.35,
//    "lon": 4.9167,
//    "org": "Microsoft Azure",
//    "query": "104.40.211.35",
//    "region": "NH",
//    "regionName": "North Holland",
//    "status": "success",
//    "timezone": "Europe/Amsterdam",
//    "zip": "1091"
//  }

//  Examine a few bits of information:
System.DebugLog("country name = " + json.StringOf("country"))
System.DebugLog("country code = " + json.StringOf("countryCode"))

 

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