public Response fileUpload(URL url, String fieldName, String fileName, InputStream content, List<BasicNameValuePair> params, List<Header> headers) throws IOException {
    HttpClient client = getHttpClient();

    HttpPost post = new HttpPost(url.toString());
    if (null != headers) {
        for (Header h : headers) {
            post.addHeader(h);
        }
    }

    MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
    entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
    if (null != params) {
        for (NameValuePair pair : params) {
            entityBuilder.addPart(pair.getName(), new StringBody(pair.getValue(), ContentType.TEXT_PLAIN));
        }
    }
    entityBuilder.addBinaryBody(fieldName, content, ContentType.DEFAULT_BINARY, fileName);

    post.setEntity(entityBuilder.build());

    if (null != context) {
        return new Response(client.execute(post, context));
    }

    return new Response(client.execute(post));
}