org.apache.http.conn
Interfaces 
ClientConnectionManager
ClientConnectionManagerFactory
ClientConnectionOperator
ConnectionReleaseTrigger
EofSensorWatcher
HttpRouteDirector
HttpRoutePlanner
LayeredSocketFactory
ManagedClientConnection
OperatedClientConnection
SocketFactory
Classes 
BasicEofSensorWatcher
BasicManagedEntity
BasicRouteDirector
EofSensorInputStream
HttpRoute
PlainSocketFactory
RouteTracker
Scheme
SchemeRegistry
Exceptions 
ConnectionPoolTimeoutException
ConnectTimeoutException
HttpHostConnectException