 <p>YES this same protocol is responsible for handling the cookies.. i mean the browser that says that it can handle HTTP protocol shud also handle cookies.<br> see the link <a href="http://en.wikipedia.org/wiki/HTTP_cookie#Implementation" rel="nofollow">http://en.wikipedia.org/wiki/HTTP_cookie#Implementation</a> <br> and there are a lot more things in HTTP other than Req/Res and cookies.. in fact the cookie thing is a part of the req/res. visit this link <a href="http://www.w3.org/Protocols/rfc2616/rfc2616.html" rel="nofollow">http://www.w3.org/Protocols/rfc2616/rfc2616.html</a></p>