| Interface | Description | 
|---|---|
| ClientConnectionManager | Deprecated
 (4.3) replaced by  
HttpClientConnectionManager. | 
| ClientConnectionManagerFactory | Deprecated
 (4.3) replaced by  
HttpClientConnectionManager. | 
| ClientConnectionOperator | Deprecated
 (4.3) replaced by  
HttpClientConnectionManager. | 
| ClientConnectionRequest | Deprecated
 (4.3) replaced by  
ConnectionRequest. | 
| ConnectionKeepAliveStrategy | 
 Interface for deciding how long a connection can remain
 idle before being reused. 
 | 
| ConnectionReleaseTrigger | 
 Interface for releasing a connection. 
 | 
| ConnectionRequest | 
 Represents a request for a  
HttpClientConnection whose life cycle
 is managed by a connection manager. | 
| DnsResolver | 
 Users may implement this interface to override the normal DNS lookup offered
 by the OS. 
 | 
| EofSensorWatcher | 
 A watcher for  
EofSensorInputStream. | 
| HttpClientConnectionManager | 
 Represents a manager of persistent client connections. 
 | 
| HttpClientConnectionOperator | 
 Connection operator that performs connection connect and upgrade operations. 
 | 
| HttpConnectionFactory<T,C extends org.apache.http.HttpConnection> | 
 Generic  
HttpConnection factory. | 
| 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. 
 | 
| Class | Description | 
|---|---|
| BasicEofSensorWatcher | Deprecated
 (4.3) do not use. 
 | 
| BasicManagedEntity | Deprecated
 (4.3) do not use. 
 | 
| EofSensorInputStream | 
 A stream wrapper that triggers actions on  
close() and EOF. | 
| HttpInetSocketAddress | Deprecated
 (4.3) 
 | 
| MultihomePlainSocketFactory | Deprecated
 (4.1)  Do not use. 
 | 
| Exception | Description | 
|---|---|
| ConnectionPoolTimeoutException | 
 A timeout while waiting for an available connection
 from a connection manager. 
 | 
| ConnectTimeoutException | 
 A timeout while connecting to an HTTP server or waiting for an
 available connection from an HttpConnectionManager. 
 | 
| HttpHostConnectException | 
 A  
ConnectException that specifies the HttpHost that was
 being connected to. | 
| UnsupportedSchemeException | 
 Signals failure to establish connection using an unknown protocol scheme. 
 | 
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