Pascal (Lazarus/Delphi)

ipinfo.io IPv4 Geolocation Lookup

See more Geolocation Examples

Demonstrates how to lookup Geolocation data for an IPv4 address using the ipinfo.io API. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject,
  Chilkat.Http;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  jsonStr: string;
  json: TJsonObject;
  ip: string;
  hostname: string;
  city: string;
  region: string;
  country: string;
  loc: string;
  postal: string;
  asnAsn: string;
  asnName: string;
  asnDomain: string;
  asnRoute: string;
  asnType: string;
  companyName: string;
  companyDomain: string;
  companyType: string;
  carrierName: string;
  carrierMcc: string;
  carrierMnc: string;

begin
  success := False;

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

  http := THttp.Create;

  http.Login := 'ACCESS_TOKEN';
  http.Password := '';
  http.Accept := 'application/json';

  //  Lookup an IPv4 address: 149.250.207.170  (this was a randomly chosen address)
  jsonStr := http.QuickGetStr('https://ipinfo.io/149.250.207.170');
  if (http.LastMethodSuccess = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  json := TJsonObject.Create;
  json.EmitCompact := False;
  success := json.Load(jsonStr);

  WriteLn(json.Emit());

  //  Sample output:
  //  Use this online tool to generate parsing code from sample JSON: 
  //  Generate Parsing Code from JSON

  //  Note: This is the output for the free trial account.
  //  
  //  {
  //    "ip": "149.250.207.170",
  //    "city": "",
  //    "region": "",
  //    "country": "DE",
  //    "loc": "51.2993,9.4910",
  //    "org": "AS15854 EntServ Deutschland GmbH"
  //  }

  //  A full response would look like this:

  //  {
  //    "ip": "66.87.125.72",
  //    "hostname": "66-87-125-72.pools.spcsdns.net",
  //    "city": "Southbridge",
  //    "region": "Massachusetts",
  //    "country": "US",
  //    "loc": "42.0707,-72.0440",
  //    "postal": "01550",
  //    "asn": {
  //      "asn": "AS10507",
  //      "name": "Sprint Personal Communications Systems",
  //      "domain": "spcsdns.net",
  //      "route": "66.87.125.0/24",
  //      "type": "isp"
  //    },
  //    "company": {
  //      "name": "Sprint Springfield POP",
  //      "domain": "sprint.com",
  //      "type": "isp"
  //    },  
  //    "carrier": {
  //      "name": "Sprint",
  //      "mcc": "310",
  //      "mnc": "120"
  //    }
  //  }
  //  

  ip := json.StringOf('ip');
  hostname := json.StringOf('hostname');
  city := json.StringOf('city');
  region := json.StringOf('region');
  country := json.StringOf('country');
  loc := json.StringOf('loc');
  postal := json.StringOf('postal');
  asnAsn := json.StringOf('asn.asn');
  asnName := json.StringOf('asn.name');
  asnDomain := json.StringOf('asn.domain');
  asnRoute := json.StringOf('asn.route');
  asnType := json.StringOf('asn.type');
  companyName := json.StringOf('company.name');
  companyDomain := json.StringOf('company.domain');
  companyType := json.StringOf('company.type');
  carrierName := json.StringOf('carrier.name');
  carrierMcc := json.StringOf('carrier.mcc');
  carrierMnc := json.StringOf('carrier.mnc');


  http.Free;
  json.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.