Package org.apache.http.impl.client

Default HTTP client implementation.

See: Description

Interface Summary

Interface	Description
Clock	Interface used to enable easier testing of time-related behavior.

Class Summary

Class	Description
AbstractResponseHandler<T>	A generic ResponseHandler that works with the response entity for successful (2xx) responses.
AIMDBackoffManager	The AIMDBackoffManager applies an additive increase, multiplicative decrease (AIMD) to managing a dynamic limit to the number of connections allowed to a given host.
AuthenticationStrategyImpl
BasicAuthCache	Default implementation of AuthCache.
BasicCookieStore	Default implementation of CookieStore
BasicCredentialsProvider	Default implementation of CredentialsProvider.
BasicResponseHandler	A ResponseHandler that returns the response body as a String for successful (2xx) responses.
CloseableHttpClient	Base implementation of HttpClient that also implements Closeable.
CookieSpecRegistries
DefaultBackoffStrategy	This ConnectionBackoffStrategy backs off either for a raw network socket or connection timeout or if the server explicitly sends a 503 (Service Unavailable) response.
DefaultClientConnectionReuseStrategy
DefaultConnectionKeepAliveStrategy	Default implementation of a strategy deciding duration that a connection can remain idle.
DefaultHttpRequestRetryHandler	The default HttpRequestRetryHandler used by request executors.
DefaultRedirectStrategy	Default implementation of RedirectStrategy.
DefaultServiceUnavailableRetryStrategy	Default implementation of the ServiceUnavailableRetryStrategy interface.
DefaultUserTokenHandler	Default implementation of UserTokenHandler.
EntityEnclosingRequestWrapper	Deprecated (4.3) do not use.
FutureRequestExecutionMetrics	Collection of different counters used to gather metrics for FutureRequestExecutionService.
FutureRequestExecutionMetrics.DurationCounter	A counter that can measure duration and number of events.
FutureRequestExecutionService	HttpAsyncClientWithFuture wraps calls to execute with a HttpRequestFutureTask and schedules them using the provided executor service.
HttpClientBuilder	Builder for CloseableHttpClient instances.
HttpClients	Factory methods for CloseableHttpClient instances.
HttpRequestFutureTask<V>	FutureTask implementation that wraps a HttpAsyncClientCallable and exposes various task specific metrics.
HttpRequestTaskCallable<V>
IdleConnectionEvictor	This class maintains a background thread to enforce an eviction policy for expired / idle persistent connections kept alive in the connection pool.
IdleConnectionEvictor.DefaultThreadFactory
InternalHttpClient	Internal class.
LaxRedirectStrategy	Lax RedirectStrategy implementation that automatically redirects all HEAD, GET, POST, and DELETE requests.
MinimalHttpClient	Internal class.
NoopUserTokenHandler	Noop implementation of UserTokenHandler that always returns null.
NullBackoffStrategy	This is a ConnectionBackoffStrategy that never backs off, for compatibility with existing behavior.
ProxyAuthenticationStrategy	Default AuthenticationStrategy implementation for proxy host authentication.
ProxyClient	ProxyClient can be used to establish a tunnel via an HTTP proxy.
RedirectLocations	This class represents a collection of URIs used as redirect locations.
RequestWrapper	Deprecated (4.3) do not use.
StandardHttpRequestRetryHandler	HttpRequestRetryHandler which assumes that all requested HTTP methods which should be idempotent according to RFC-2616 are in fact idempotent and can be retried.
SystemClock	The actual system clock.
SystemDefaultCredentialsProvider	Implementation of CredentialsProvider backed by standard JRE Authenticator.
TargetAuthenticationStrategy	Default AuthenticationStrategy implementation for proxy host authentication.

Package org.apache.http.impl.client Description

Default HTTP client implementation.

The usual execution flow can be demonstrated by the code snippet below:

 CloseableHttpClient httpclient = HttpClients.createDefault();
 try {
      HttpGet httpGet = new HttpGet("http://targethost/homepage");
      CloseableHttpResponse response = httpclient.execute(httpGet);
      try {
          System.out.println(response.getStatusLine());
          HttpEntity entity = response.getEntity();
          // do something useful with the response body
          // and ensure it is fully consumed
          EntityUtils.consume(entity);
      } finally {
          response.close();
      }
 } finally {
      httpclient.close();
 }