DrmManagerClient works on local files, but not on files in a server

Question

I am trying to implement DRM in my application.
But I am facing a problem. canHandle() always returns false.
And DrmManagerClient.getOriginalMimeType(Uri); always returns null for http links.
But for files in the storage, everything is working fine.

DrmManagerClient mDrmManager;
mDrmManager = new DrmManagerClient(this);
String testUri = myUrl;
String mimeType = getOriginalMimeType( testUri );

Below is the method to get mimetype but unfortunately canHandle() always return false.

    // get MimeType
public String getOriginalMimeType(String uri){
    String mime = null;

    try {
        if( mDrmManager.canHandle(Uri.parse(uri), null) ){
            mime = mDrmManager.getOriginalMimeType(Uri.parse(uri));
        }
    } catch (Exception e) {
        Log.w(TAG, e.toString());
    }

    return mime;
}

Am I missing something?
The obvious would have been that probably the url I am using is not good, but I have tried different urls which work in another application but the outcome is the same.
I have set INTERNET permission in the manifest file too. I am running out of ideas what is the problem.
After digging into DrmManagerClient source code, I noticed that canHandle() is defined as follows:

/**
 * Checks whether the given MIME type or URI can be handled.
 *
 * @param uri URI for the content to be handled.
 * @param mimeType MIME type of the object to be handled
 *
 * @return True if the given MIME type or URI can be handled; false if they cannot be handled.
 */
public boolean canHandle(Uri uri, String mimeType) {
    if ((null == uri || Uri.EMPTY == uri) && (null == mimeType || mimeType.equals(""))) {
        throw new IllegalArgumentException("Uri or the mimetype should be non null");
    }
    return canHandle(convertUriToPath(uri), mimeType);
}

What canHandle(Uri uri , String mimeType) is basically the same as canHandle( String path, mimeType ) because it is converting Uri to Path.
Does this mean that Http Urls wont work?

Answer 1

I have found that the problem lies in the urls.
I tested with these two links and everything is fine now.

Stream 1: http://commondatastorage.googleapis.com/wvmedia/sintel_main_720p_4br_tp.wvm

Stream 2: http://commondatastorage.googleapis.com/wvmedia/starz_main_720p_6br_tp.wvm

Hope it helps someone in the future.