| AuthenticationHandler | |
| CookieStore | Abstract cookie store. |
| CredentialsProvider | Abstract credentials provider. |
| HttpClient | Interface for an HTTP client. |
| HttpRequestRetryHandler | A handler for determining if an HttpRequest should be retried after a recoverable exception during execution. |
| RedirectHandler | A handler for determining if an HTTP request should be redirected to a new location in response to an HTTP response received from the target server. |
| RequestDirector | A client-side request director. |
| ResponseHandler<T> | Handler that encapsulates the process of generating a response object
from a HttpResponse. |
| UserTokenHandler | A handler for determining if the given execution context is user specific or not. |
| CircularRedirectException | Signals a circular redirect |
| ClientProtocolException | Signals an error in the HTTP protocol. |
| HttpResponseException | Signals a non 2xx HTTP response. |
| NonRepeatableRequestException | Signals failure to retry the request due to non-repeatable request entity. |
| RedirectException | Signals violation of HTTP specification caused by an invalid redirect |
