Redirects lose the HTTP method, body and headers from the original request.

[glennporter-examtime]

If a response is a redirect, it gets redirected to the new location, but the HTTP method of the new request defaults to GET if the original one isn't HEAD.

AsyncHttpClient.setDataEmitter...
final String method = request.getMethod().equals(AsyncHttpHead.METHOD) ? AsyncHttpHead.METHOD : AsyncHttpGet.METHOD;

I'm not sure if this is for a reason or just a little mistake.
Also in the same method, only the "User-Agent" and "Range" headers are copied across to the new request.
The original request body is not included at all in the new request.

I've raised a pull request (#326) to address these... there may be a better way of dealing with them, but it works for me :)