| HttpListener | Callback used to listen URL connection response. |
| HttpProgressListener | HTTP Progress listener on download/upload. |
| HttpCookie | An HttpCookie object represents an HTTP cookie, which carries state information between server and user agent. |
| HttpRequest | HttpRequest object represents an HTTP/HTTPS request. |
| HttpResponse | HttpResponse object represents an http/https connection response. |
| CookiePolicy | Cookie acceptance policies. |
| ProtocolException | Thrown to indicate that there is an error in the underlying protocol, such as a TCP error. |