Response code is always returnd as -1

Question

url = new URL(urlString);
HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
httpConnection.setDoInput(true);
httpConnection.connect();
httpConnection.getHeaderFields();
int responsecode = httpConnection.getResponseCode();
if (responsecode == HttpURLConnection.HTTP_NOT_MODIFIED) {
....//fetch from cache
else {
....// save to cache
}In the above snippet the responsecode is always returned as -1. But the data returned in the response is properly read. Also the headers are shown null. But they are getting saved.
On checking with TCP tool, I found that the server is actually returning the response code and headers properly.
Am I missing any configuration or setting?

Answer 1

I don't know that you've actually obtained an HTTP response at that point: maybe you are getting the initial value. I would do some I/O or get an actual header value before trying the response code.