Firefox on Android BW detection

GeckoNetworkManager.java

  static private final double  kDefaultBandwidth    = -1.0;
  static private final boolean kDefaultCanBeMetered = false;

  static private final double  kMaxBandwidth = 20.0;

  static private final double  kNetworkSpeedEthernet = 20.0;           // 20 Mb/s
  static private final double  kNetworkSpeedWifi     = 20.0;           // 20 Mb/s
  static private final double  kNetworkSpeedWiMax    = 40.0;           // 40 Mb/s
  static private final double  kNetworkSpeed_2_G     = 15.0 / 1024.0;  // 15 kb/s
  static private final double  kNetworkSpeed_2_5_G   = 60.0 / 1024.0;  // 60 kb/s
  static private final double  kNetworkSpeed_2_75_G  = 200.0 / 1024.0; // 200 kb/s
  static private final double  kNetworkSpeed_3_G     = 300.0 / 1024.0; // 300 kb/s
  static private final double  kNetworkSpeed_3_5_G   = 7.0;            // 7 Mb/s
  static private final double  kNetworkSpeed_3_75_G  = 20.0;           // 20 Mb/s
  static private final double  kNetworkSpeed_3_9_G   = 50.0;           // 50 Mb/s

 private static NetworkType getNetworkType() {
    ConnectivityManager cm =
      (ConnectivityManager)GeckoApp.mAppContext.getSystemService(Context.CONNECTIVITY_SERVICE);

    if (cm == null) {
      Log.w("GeckoNetworkManager", "Could not access Connectivity service");
      return NetworkType.NETWORK_NONE;
    }

    NetworkInfo ni = cm.getActiveNetworkInfo();

    if (ni == null) {
      return NetworkType.NETWORK_NONE;
    }
...
    switch (tm.getNetworkType()) {
      case TelephonyManager.NETWORK_TYPE_IDEN:
      case TelephonyManager.NETWORK_TYPE_CDMA:
        return NetworkType.NETWORK_2_G;
      case TelephonyManager.NETWORK_TYPE_GPRS:
      case TelephonyManager.NETWORK_TYPE_1xRTT:
        return NetworkType.NETWORK_2_5_G;
      case TelephonyManager.NETWORK_TYPE_EDGE:
        return NetworkType.NETWORK_2_75_G;
      case TelephonyManager.NETWORK_TYPE_UMTS:
      case TelephonyManager.NETWORK_TYPE_EVDO_0:
        return NetworkType.NETWORK_3_G;
      case TelephonyManager.NETWORK_TYPE_HSPA:
      case TelephonyManager.NETWORK_TYPE_HSDPA:
      case TelephonyManager.NETWORK_TYPE_HSUPA:
      case TelephonyManager.NETWORK_TYPE_EVDO_A:
      case TelephonyManager.NETWORK_TYPE_EVDO_B:
      case TelephonyManager.NETWORK_TYPE_EHRPD:
        return NetworkType.NETWORK_3_5_G;
      case TelephonyManager.NETWORK_TYPE_HSPAP:
        return NetworkType.NETWORK_3_75_G;
      case TelephonyManager.NETWORK_TYPE_LTE:
        return NetworkType.NETWORK_3_9_G;
      case TelephonyManager.NETWORK_TYPE_UNKNOWN:
      default:
        Log.w("GeckoNetworkManager", "Connected to an unknown mobile network!");
        return NetworkType.NETWORK_UNKNOWN;
   }
}

 private static double getNetworkSpeed(NetworkType aType) {
    switch (aType) {
      case NETWORK_NONE:
        return 0.0;
      case NETWORK_ETHERNET:
        return kNetworkSpeedEthernet;
      case NETWORK_WIFI:
        return kNetworkSpeedWifi;
      case NETWORK_WIMAX:
        return kNetworkSpeedWiMax;
      case NETWORK_2_G:
        return kNetworkSpeed_2_G;
      case NETWORK_2_5_G:
        return kNetworkSpeed_2_5_G;
      case NETWORK_2_75_G:
        return kNetworkSpeed_2_75_G;
      case NETWORK_3_G:
        return kNetworkSpeed_3_G;
      case NETWORK_3_5_G:
        return kNetworkSpeed_3_5_G;
      case NETWORK_3_75_G:
        return kNetworkSpeed_3_75_G;
      case NETWORK_3_9_G:
        return kNetworkSpeed_3_9_G;
      case NETWORK_UNKNOWN:
      default:
        return kDefaultBandwidth;
    }
}