(MFC) MaxMind IPv4 Geolocation Lookup

Demonstrates how to lookup Geolocation data for an IPv4 address using the MaxMind GeoIP2 Precision Web Service.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkHttp http;

    http.put_Login("MAXMIND_ACCOUNT_ID");
    http.put_Password("MAXMIND_LICENSE_KEY");
    http.put_Accept("application/json");

    // Lookup an IPv4 address: 149.250.207.170  (this was a randomly chosen address)
    const char *jsonStr = http.quickGetStr("https://geoip.maxmind.com/geoip/v2.1/country/149.250.207.170");
    if (http.get_LastMethodSuccess() == false) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkJsonObject json;
    json.put_EmitCompact(false);
    bool success = json.Load(jsonStr);

    strOut.append(json.emit());
    strOut.append("\r\n");

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

    // {
    //   "continent": {
    //     "code": "EU",
    //     "geoname_id": 6255148,
    //     "names": {
    //       "ja": "?????",
    //       "pt-BR": "Europa",
    //       "ru": "??????",
    //       "zh-CN": "??",
    //       "de": "Europa",
    //       "en": "Europe",
    //       "es": "Europa",
    //       "fr": "Europe"
    //     }
    //   },
    //   "country": {
    //     "is_in_european_union": true,
    //     "iso_code": "DE",
    //     "geoname_id": 2921044,
    //     "names": {
    //       "fr": "Allemagne",
    //       "ja": "????????",
    //       "pt-BR": "Alemanha",
    //       "ru": "????????",
    //       "zh-CN": "??",
    //       "de": "Deutschland",
    //       "en": "Germany",
    //       "es": "Alemania"
    //     }
    //   },
    //   "maxmind": {
    //     "queries_remaining": 49999
    //   },
    //   "registered_country": {
    //     "is_in_european_union": true,
    //     "iso_code": "DE",
    //     "geoname_id": 2921044,
    //     "names": {
    //       "es": "Alemania",
    //       "fr": "Allemagne",
    //       "ja": "????????",
    //       "pt-BR": "Alemanha",
    //       "ru": "????????",
    //       "zh-CN": "??",
    //       "de": "Deutschland",
    //       "en": "Germany"
    //     }
    //   },
    //   "traits": {
    //     "ip_address": "149.250.207.170"
    //   }
    // }
    // 
    // 
    const char *continentCode = 0;
    int continentGeoname_id;
    const char *continentNamesJa = 0;
    const char *continentNamesPt_BR = 0;
    const char *continentNamesRu = 0;
    const char *continentNamesZh_CN = 0;
    const char *continentNamesDe = 0;
    const char *continentNamesEn = 0;
    const char *continentNamesEs = 0;
    const char *continentNamesFr = 0;
    bool countryIs_in_european_union;
    const char *countryIso_code = 0;
    int countryGeoname_id;
    const char *countryNamesFr = 0;
    const char *countryNamesJa = 0;
    const char *countryNamesPt_BR = 0;
    const char *countryNamesRu = 0;
    const char *countryNamesZh_CN = 0;
    const char *countryNamesDe = 0;
    const char *countryNamesEn = 0;
    const char *countryNamesEs = 0;
    int maxmindQueries_remaining;
    bool registered_countryIs_in_european_union;
    const char *registered_countryIso_code = 0;
    int registered_countryGeoname_id;
    const char *registered_countryNamesEs = 0;
    const char *registered_countryNamesFr = 0;
    const char *registered_countryNamesJa = 0;
    const char *registered_countryNamesPt_BR = 0;
    const char *registered_countryNamesRu = 0;
    const char *registered_countryNamesZh_CN = 0;
    const char *registered_countryNamesDe = 0;
    const char *registered_countryNamesEn = 0;
    const char *traitsIp_address = 0;

    continentCode = json.stringOf("continent.code");
    continentGeoname_id = json.IntOf("continent.geoname_id");
    continentNamesJa = json.stringOf("continent.names.ja");
    continentNamesPt_BR = json.stringOf("continent.names.pt-BR");
    continentNamesRu = json.stringOf("continent.names.ru");
    continentNamesZh_CN = json.stringOf("continent.names.zh-CN");
    continentNamesDe = json.stringOf("continent.names.de");
    continentNamesEn = json.stringOf("continent.names.en");
    continentNamesEs = json.stringOf("continent.names.es");
    continentNamesFr = json.stringOf("continent.names.fr");
    countryIs_in_european_union = json.BoolOf("country.is_in_european_union");
    countryIso_code = json.stringOf("country.iso_code");
    countryGeoname_id = json.IntOf("country.geoname_id");
    countryNamesFr = json.stringOf("country.names.fr");
    countryNamesJa = json.stringOf("country.names.ja");
    countryNamesPt_BR = json.stringOf("country.names.pt-BR");
    countryNamesRu = json.stringOf("country.names.ru");
    countryNamesZh_CN = json.stringOf("country.names.zh-CN");
    countryNamesDe = json.stringOf("country.names.de");
    countryNamesEn = json.stringOf("country.names.en");
    countryNamesEs = json.stringOf("country.names.es");
    maxmindQueries_remaining = json.IntOf("maxmind.queries_remaining");
    registered_countryIs_in_european_union = json.BoolOf("registered_country.is_in_european_union");
    registered_countryIso_code = json.stringOf("registered_country.iso_code");
    registered_countryGeoname_id = json.IntOf("registered_country.geoname_id");
    registered_countryNamesEs = json.stringOf("registered_country.names.es");
    registered_countryNamesFr = json.stringOf("registered_country.names.fr");
    registered_countryNamesJa = json.stringOf("registered_country.names.ja");
    registered_countryNamesPt_BR = json.stringOf("registered_country.names.pt-BR");
    registered_countryNamesRu = json.stringOf("registered_country.names.ru");
    registered_countryNamesZh_CN = json.stringOf("registered_country.names.zh-CN");
    registered_countryNamesDe = json.stringOf("registered_country.names.de");
    registered_countryNamesEn = json.stringOf("registered_country.names.en");
    traitsIp_address = json.stringOf("traits.ip_address");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }