W/System: A resource failed to call end. When using HttpsURLConnection - Android

In the logcat I get a warning: W/System: A resource failed to call end.

I am 100% positive that this piece of code makes the warning, since when I take it out it stops. I can't seem to fix it so it doesn't display warning.

The purpose of the code is to check if there is internet connection or not.

It is on separate thread. Declared with:

public class ConnectWifiThread extends Thread {
    public static boolean isInternetAvailable(Context context) {

Here is the code:

try {
    URL url = new URL("https://www.google.com/");
    HttpsURLConnection https = (HttpsURLConnection) url.openConnection();

    https.setRequestProperty("User-Agent", "test");
    https.setRequestProperty("Connection", "close");
    https.setConnectTimeout(2000); // mTimeout is in seconds
    https.connect();

    int tempResponse = https.getResponseCode();

    if (tempResponse == 200) {
        https.disconnect();
        Thread.sleep(50);
        https=null;
        url=null;

        Thread.sleep(50);
        Log.d("Has", "internet");
        return true;
    } else {
        https.disconnect();
        Thread.sleep(50);
        https=null;
        url=null;
        Thread.sleep(50);
        Log.d("NO", "internet");
        return false;
    }
} catch (MalformedURLException e) {
    e.printStackTrace();
    return false;
} catch (IOException e) {
    e.printStackTrace();
    return false;
}
catch (Exception e) {
    Log.d("Error checking internet", e.getMessage());
    return false;
}

Thank you

When you use a URLConnection, by default it makes an input stream for you to read the response. You'd get that by calling getInputStream() on the connection, and then you'd read the stream to completion and close it.

If you don't need the data, you can alternatively call setDoInput(false) to save you the trouble of doing the above.