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HttpSession

Sending requests and receiving responses is not enough when we have to emulate browsing through a website. For example, we might need to login, capture and carry-on the cookies to preserve the session, follow the redirects, make requests to get dynamic content... in the same way as a real web browser.
HttpSession is a tool just for that. It sends requests for you, handles 301 and 302 redirections automatically, reads and preserves cookies across the requests, and so on.
Usage is simple:
HttpSession session = new HttpSession();
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HttpRequest request = HttpRequest.get("www.facebook.com");
session.sendRequest(request);
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// request is sent, and response is received
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// process the HTML page
String page = session.getPage();
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// create a new request
HttpRequest newRequest = HttpRequest.post(formAction);
​
session.sendRequest(newRequest);
HttpSession instance handles all the cookies, allowing the session to be tracked while browsing using HTTP and supports keep-alive persistent connections.