import java.net.*;
import java.security.cert.Certificate;
import java.io.*;
import java.util.List;
import java.util.Map;
import java.util.HashMap;

public class HttpFetcher {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        HttpFetcher http = new HttpFetcher();
        String postData = "user=user1234&password=pass1234";
        String html = "";

        //Build request headers
        RequestHeaders request = new RequestHeaders();
        request.set("Content-Type", "application/x-www-form-urlencoded");
        request.set("Content-Length", "" + Integer.toString(postData.getBytes().length));
        request.set("Content-Language", "en-US");
        Map<String,List<String>> responseHeaders = new HashMap<String,List<String>>();
        try{
            html = http.executePost("http://foobar.com",postData,request);
            System.out.println(responseHeaders.size());
            if( responseHeaders.containsKey("Set-Cookie")){
                System.out.println("Contains cookie");
            }else{
                System.out.println("Doesn't contain cookie");
            }


        }catch(IOException e){
            System.out.println("IOException");
        }
        //System.out.println(html);
    }



    public static String executePost(String targetURL, String urlParameters,RequestHeaders request) throws IOException {
        URL url;
        HttpURLConnection connection = null;
        try {
            //Create connection
            url = new URL(targetURL);
            connection = (HttpURLConnection)url.openConnection();
            connection.setRequestMethod("POST");
            //Apply request headers
            request.apply(connection);
            connection.setUseCaches (false);
            connection.setDoInput(true);
            connection.setDoOutput(true);

            //Send request
            DataOutputStream wr = new DataOutputStream (
                    connection.getOutputStream ());
            wr.writeBytes (urlParameters);
            wr.flush ();
            wr.close ();

            //Get Response
            InputStream is = connection.getInputStream();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            String line;
            StringBuffer response = new StringBuffer();
            while((line = rd.readLine()) != null) {
                response.append(line);
                response.append('\r');
            }
            rd.close();
            //Response headers
            responseHeaders = connection.getHeaderFields();
            //System.out.println( responseHeaders.toString() );
            return response.toString();

        } catch (Exception e) {

          e.printStackTrace();
          return null;

        } finally {

          if(connection != null) {
            connection.disconnect();
          }
        }
    }



    private static String get_content(HttpURLConnection con){
        String content = "";
        if(con!=null){
            try {
                BufferedReader br =
                        new BufferedReader(
                                new InputStreamReader(con.getInputStream()));
                String input;
                while ((input = br.readLine()) != null){
                    content += input;
                }
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return content;
    }

}