Bad Request While Trying To Send Cookie With HttpGet Request

I am developing an Android app for a website. I'm trying to get some information from the website by sending a cookie using a HttpGet request. I don't know where I am going wrong with the request. I am using AsyncTask to send the request to the server. The request also uses a token which I receive when I login to the webpage. All this is clear in the code below. This is part of the process in the doInBackground() function of the Asynctask:

BufferedReader in = null;
JSONObject token = Login.getToken(); // Token received after login, used in the cookie
try {
r = token.get("session_token").toString();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
[code]...