org.apache.http.impl.conn

Class BasicHttpClientConnectionManager

java.lang.Object

org.apache.http.impl.conn.BasicHttpClientConnectionManager

All Implemented Interfaces:

Closeable, AutoCloseable, HttpClientConnectionManager

@Contract(threading=SAFE_CONDITIONAL)
public class BasicHttpClientConnectionManager
extends Object
implements HttpClientConnectionManager, Closeable

A connection manager for a single connection. This connection manager maintains only one active connection. Even though this class is fully thread-safe it ought to be used by one execution thread only, as only one thread a time can lease the connection at a time.

This connection manager will make an effort to reuse the connection for subsequent requests with the same route. It will, however, close the existing connection and open it for the given route, if the route of the persistent connection does not match that of the connection request. If the connection has been already been allocated IllegalStateException is thrown.

This connection manager implementation should be used inside an EJB container instead of PoolingHttpClientConnectionManager.

Since:

4.3

Constructor Summary

Constructors

Constructor and Description
BasicHttpClientConnectionManager()
BasicHttpClientConnectionManager(HttpClientConnectionOperator httpClientConnectionOperator, HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory)
BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry)
BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry, HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory)
BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry, HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory, SchemePortResolver schemePortResolver, DnsResolver dnsResolver)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	closeExpiredConnections() Closes all expired connections in the pool.
void	closeIdleConnections(long idletime, TimeUnit timeUnit) Closes idle connections in the pool.
void	connect(org.apache.http.HttpClientConnection conn, HttpRoute route, int connectTimeout, org.apache.http.protocol.HttpContext context) Connects the underlying connection socket to the connection target in case of a direct route or to the first proxy hop in case of a route via a proxy (or multiple proxies).
protected void	finalize()
org.apache.http.config.ConnectionConfig	getConnectionConfig()
org.apache.http.config.SocketConfig	getSocketConfig()
void	releaseConnection(org.apache.http.HttpClientConnection conn, Object state, long keepalive, TimeUnit timeUnit) Releases the connection back to the manager making it potentially re-usable by other consumers.
ConnectionRequest	requestConnection(HttpRoute route, Object state) Returns a new ConnectionRequest, from which a HttpClientConnection can be obtained or the request can be aborted.
void	routeComplete(org.apache.http.HttpClientConnection conn, HttpRoute route, org.apache.http.protocol.HttpContext context) Marks the connection as fully established with all its intermediate hops completed.
void	setConnectionConfig(org.apache.http.config.ConnectionConfig connConfig)
void	setSocketConfig(org.apache.http.config.SocketConfig socketConfig)
void	shutdown() Shuts down this connection manager and releases allocated resources.
void	upgrade(org.apache.http.HttpClientConnection conn, HttpRoute route, org.apache.http.protocol.HttpContext context) Upgrades the underlying connection socket to TLS/SSL (or another layering protocol) after having executed CONNECT method to all intermediate proxy hops

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BasicHttpClientConnectionManager

public BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry,
                                HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory,
                                SchemePortResolver schemePortResolver,
                                DnsResolver dnsResolver)

BasicHttpClientConnectionManager

public BasicHttpClientConnectionManager(HttpClientConnectionOperator httpClientConnectionOperator,
                                HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory)

Since:

4.4

BasicHttpClientConnectionManager

public BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry,
                                HttpConnectionFactory<HttpRoute,ManagedHttpClientConnection> connFactory)

BasicHttpClientConnectionManager

public BasicHttpClientConnectionManager(org.apache.http.config.Lookup<ConnectionSocketFactory> socketFactoryRegistry)

BasicHttpClientConnectionManager

public BasicHttpClientConnectionManager()

Method Detail

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

getSocketConfig

public org.apache.http.config.SocketConfig getSocketConfig()

setSocketConfig

public void setSocketConfig(org.apache.http.config.SocketConfig socketConfig)

getConnectionConfig

public org.apache.http.config.ConnectionConfig getConnectionConfig()

setConnectionConfig

public void setConnectionConfig(org.apache.http.config.ConnectionConfig connConfig)

requestConnection

public final ConnectionRequest requestConnection(HttpRoute route,
                                  Object state)

Description copied from interface: HttpClientConnectionManager

Returns a new ConnectionRequest, from which a HttpClientConnection can be obtained or the request can be aborted.

Please note that newly allocated connections can be returned in the closed state. The consumer of that connection is responsible for fully establishing the route the to the connection target by calling connect in order to connect directly to the target or to the first proxy hop, optionally calling upgrade method to upgrade the connection after having executed CONNECT method to all intermediate proxy hops and and finally calling routeComplete to mark the route as fully completed.

Specified by:

requestConnection in interface HttpClientConnectionManager

Parameters:

route - HTTP route of the requested connection.

state - expected state of the connection or null if the connection is not expected to carry any state.

releaseConnection

public void releaseConnection(org.apache.http.HttpClientConnection conn,
                     Object state,
                     long keepalive,
                     TimeUnit timeUnit)

Description copied from interface: HttpClientConnectionManager

Releases the connection back to the manager making it potentially re-usable by other consumers. Optionally, the maximum period of how long the manager should keep the connection alive can be defined using validDuration and timeUnit parameters.

Specified by:

releaseConnection in interface HttpClientConnectionManager

Parameters:

conn - the managed connection to release.

keepalive - the duration of time this connection is valid for reuse.

timeUnit - the time unit.

See Also:

HttpClientConnectionManager.closeExpiredConnections()

connect

public void connect(org.apache.http.HttpClientConnection conn,
           HttpRoute route,
           int connectTimeout,
           org.apache.http.protocol.HttpContext context)
             throws IOException

Description copied from interface: HttpClientConnectionManager

Connects the underlying connection socket to the connection target in case of a direct route or to the first proxy hop in case of a route via a proxy (or multiple proxies).

Specified by:

connect in interface HttpClientConnectionManager

Parameters:

conn - the managed connection.

route - the route of the connection.

connectTimeout - connect timeout in milliseconds.

context - the actual HTTP context.

Throws:

IOException

upgrade

public void upgrade(org.apache.http.HttpClientConnection conn,
           HttpRoute route,
           org.apache.http.protocol.HttpContext context)
             throws IOException

Description copied from interface: HttpClientConnectionManager

Upgrades the underlying connection socket to TLS/SSL (or another layering protocol) after having executed CONNECT method to all intermediate proxy hops

Specified by:

upgrade in interface HttpClientConnectionManager

Parameters:

conn - the managed connection.

route - the route of the connection.

context - the actual HTTP context.

Throws:

IOException

routeComplete

public void routeComplete(org.apache.http.HttpClientConnection conn,
                 HttpRoute route,
                 org.apache.http.protocol.HttpContext context)
                   throws IOException

Description copied from interface: HttpClientConnectionManager

Marks the connection as fully established with all its intermediate hops completed.

Specified by:

routeComplete in interface HttpClientConnectionManager

Parameters:

conn - the managed connection.

route - the route of the connection.

context - the actual HTTP context.

Throws:

IOException

closeExpiredConnections

public void closeExpiredConnections()

Description copied from interface: HttpClientConnectionManager

Closes all expired connections in the pool.

Open connections in the pool that have not been used for the timespan defined when the connection was released will be closed. Currently allocated connections are not subject to this method. Times will be checked with milliseconds precision.

Specified by:

closeExpiredConnections in interface HttpClientConnectionManager

closeIdleConnections

public void closeIdleConnections(long idletime,
                        TimeUnit timeUnit)

Description copied from interface: HttpClientConnectionManager

Closes idle connections in the pool.

Open connections in the pool that have not been used for the timespan given by the argument will be closed. Currently allocated connections are not subject to this method. Times will be checked with milliseconds precision

All expired connections will also be closed.

Specified by:

closeIdleConnections in interface HttpClientConnectionManager

Parameters:

idletime - the idle time of connections to be closed

timeUnit - the unit for the idletime

See Also:

HttpClientConnectionManager.closeExpiredConnections()

shutdown

public void shutdown()

Description copied from interface: HttpClientConnectionManager

Shuts down this connection manager and releases allocated resources. This includes closing all connections, whether they are currently used or not.

Specified by:

shutdown in interface HttpClientConnectionManager