// cycle through available xml and binary files and encode them for submission
String url = "http://server/submission";
HttpPost post = new HttpPost(url);
MultipartEntity entity = new MultipartEntity();
for (int i = 0; i < files.length; i++) {
    File f = files[j];
    if (f.getName().endsWith(".xml")) {
        entity.addPart("xml_submission_file", new FileBody(f, "text/xml"););      
    } else if (f.getName().endsWith(".jpg")) {
        entity.addPart(f.getName(), new FileBody(f, "image/jpeg"));
    } else if (f.getName().endsWith(".3gpp")) {
	entity.addPart(f.getName(), new FileBody(f, "audio/3gpp"););
    } else if (f.getName().endsWith(".3gp")) {
	entity.addPart(f.getName(), new FileBody(f, "video/3gpp"););
    }
}
post.setEntity(entity);

// check custom header and response to ensure code is from aggregate, not proxy.
HttpResponse response = client.execute(post);
String location = response.getHeaders("Location")[0].getValue();
int code = response.getStatusLine().getStatusCode();
if (url.contains(location) && code == 201) {
	System.out.println("post successful");
}