Volley's NetworkImageView with images on FTP - ftp

Question

The scenario is: "Have adapters that work for HTTP, been asked to add FTP support" - sounds reasonable.
Is there a way to do it in an equally reasonable timeframe?
Or a similar mechanism/customized Volley library to swap Volley for?
The FTP is password-protected, if this makes any difference.
Tried so far:
HttpClientStack: Scheme 'ftp' not registered
HurlStack" libcore.net.url.FtpURLConnection cannot be cast to java.net.HttpURLConnection
attempted tunneling through a custom URLonnection (multiple difficulties, like libcore package not being public)
custom ImageCache that takes FTP handling off Volley's hands (what's the point, really?)

Answer 1

Only thing I've come up with thus far: override performRequest to do something completely different for ftp links.
Mind, the code here is bad, it just barely serves my purpose:
public class HurlStackFtp extends HurlStack {
#Override
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders)
throws IOException, AuthFailureError {
String urlString = request.getUrl();
if (urlString != null && urlString.startsWith("ftp://")) {
return performFTPRequest(request, additionalHeaders);
} else {
return super.performRequest(request, additionalHeaders);
}
}
public HttpResponse performFTPRequest(Request<?> request, Map<String, String> additionalHeaders)
throws IOException, AuthFailureError {
String url = request.getUrl();
HashMap<String, String> map = new HashMap<String, String>();
map.putAll(request.getHeaders());
map.putAll(additionalHeaders);
// UrlRewriter not supported
InputStream input = getStreamFromFTP(url);
StatusLine responseStatus = new BasicStatusLine(new ProtocolVersion("HTTP", 1, 1),
/*connection.getResponseCode()*/200, /*connection.getResponseMessage()*/"OK");
BasicHttpResponse response = new BasicHttpResponse(responseStatus);
response.setEntity(makeEntity(input));
return response;
}
public static InputStream getStreamFromFTP(String url) throws IOException {
URL parsedUrl = new URL(url);
URLConnection cn = parsedUrl.openConnection();
cn.connect();
return cn.getInputStream();
}
private static HttpEntity makeEntity(InputStream inputStream) throws IOException {
BasicHttpEntity entity = new BasicHttpEntity();
entity.setContent(inputStream);
entity.setContentLength(inputStream.available());
entity.setContentType("binary/octet-stream"); // sigh...
return entity;
}
}