| Package | Description | 
|---|---|
| org.apache.http.client | Client HTTP communication APIs. | 
| org.apache.http.client.methods | Standard HTTP method implementations. | 
| org.apache.http.conn | Client connection management APIs. | 
| org.apache.http.conn.scheme | Deprecated. | 
| org.apache.http.conn.ssl | Client TLS/SSL support. | 
| org.apache.http.impl.client | Default HTTP client implementation. | 
| org.apache.http.impl.client.cache | 
This package contains a cache module that can be used for HTTP/1.1
client-side caching. | 
| org.apache.http.impl.conn | Default implementations of client connection management
 functions. | 
| org.apache.http.impl.conn.tsccm | Deprecated. | 
| org.apache.http.impl.execchain | HTTP request execution chain APIs. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| Class and Description | 
|---|
| ClientConnectionRequest Deprecated. 
 (4.3) replaced by  ConnectionRequest. | 
| ConnectionReleaseTrigger Interface for releasing a connection. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ClientConnectionRequest Deprecated. 
 (4.3) replaced by  ConnectionRequest. | 
| ConnectionPoolTimeoutException A timeout while waiting for an available connection
 from a connection manager. | 
| ConnectionReleaseTrigger Interface for releasing a connection. | 
| ConnectionRequest Represents a request for a  HttpClientConnectionwhose life cycle
 is managed by a connection manager. | 
| ConnectTimeoutException A timeout while connecting to an HTTP server or waiting for an
 available connection from an HttpConnectionManager. | 
| EofSensorWatcher A watcher for  EofSensorInputStream. | 
| HttpRoutedConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedHttpClientConnection Represents a managed connection whose state and life cycle is managed by
 a connection manager. | 
| MultihomePlainSocketFactory Deprecated. 
 (4.1)  Do not use. For multihome support socket factories must implement
  SchemeSocketFactoryinterface. | 
| OperatedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| UnsupportedSchemeException Signals failure to establish connection using an unknown protocol scheme. | 
| Class and Description | 
|---|
| ConnectTimeoutException A timeout while connecting to an HTTP server or waiting for an
 available connection from an HttpConnectionManager. | 
| Class and Description | 
|---|
| ConnectTimeoutException A timeout while connecting to an HTTP server or waiting for an
 available connection from an HttpConnectionManager. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ConnectionKeepAliveStrategy Interface for deciding how long a connection can remain
 idle before being reused. | 
| DnsResolver Users may implement this interface to override the normal DNS lookup offered
 by the OS. | 
| HttpClientConnectionManager Represents a manager of persistent client connections. | 
| HttpConnectionFactory Generic  HttpConnectionfactory. | 
| ManagedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedHttpClientConnection Represents a managed connection whose state and life cycle is managed by
 a connection manager. | 
| SchemePortResolver Strategy for default port resolution for protocol schemes. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ClientConnectionOperator Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ClientConnectionRequest Deprecated. 
 (4.3) replaced by  ConnectionRequest. | 
| ConnectionPoolTimeoutException A timeout while waiting for an available connection
 from a connection manager. | 
| ConnectionReleaseTrigger Interface for releasing a connection. | 
| ConnectionRequest Represents a request for a  HttpClientConnectionwhose life cycle
 is managed by a connection manager. | 
| DnsResolver Users may implement this interface to override the normal DNS lookup offered
 by the OS. | 
| HttpClientConnectionManager Represents a manager of persistent client connections. | 
| HttpClientConnectionOperator Connection operator that performs connection connect and upgrade operations. | 
| HttpConnectionFactory Generic  HttpConnectionfactory. | 
| HttpRoutedConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedHttpClientConnection Represents a managed connection whose state and life cycle is managed by
 a connection manager. | 
| OperatedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| SchemePortResolver Strategy for default port resolution for protocol schemes. | 
| UnsupportedSchemeException Signals failure to establish connection using an unknown protocol scheme. | 
| Class and Description | 
|---|
| ClientConnectionManager Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ClientConnectionOperator Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ClientConnectionRequest Deprecated. 
 (4.3) replaced by  ConnectionRequest. | 
| ConnectionPoolTimeoutException A timeout while waiting for an available connection
 from a connection manager. | 
| ConnectionReleaseTrigger Interface for releasing a connection. | 
| HttpRoutedConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| ManagedHttpClientConnection Represents a managed connection whose state and life cycle is managed by
 a connection manager. | 
| OperatedClientConnection Deprecated. 
 (4.3) replaced by  HttpClientConnectionManager. | 
| Class and Description | 
|---|
| ConnectionKeepAliveStrategy Interface for deciding how long a connection can remain
 idle before being reused. | 
| HttpClientConnectionManager Represents a manager of persistent client connections. | 
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