org.apache.http.impl.nio.reactor
Class DefaultConnectingIOReactor

java.lang.Object
  extended by org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor
      extended by org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor
All Implemented Interfaces:
ConnectingIOReactor, IOReactor

@ThreadSafe
public class DefaultConnectingIOReactor
extends AbstractMultiworkerIOReactor
implements ConnectingIOReactor

Default implementation of ConnectingIOReactor. This class extends AbstractMultiworkerIOReactor with capability to connect to remote hosts.

Since:
4.0

Field Summary
 
Fields inherited from class org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor
auditLog, config, exceptionHandler, interestOpsQueueing, params, selector, selectTimeout, status
 
Constructor Summary
DefaultConnectingIOReactor()
          Creates an instance of DefaultConnectingIOReactor with default configuration.
DefaultConnectingIOReactor(int workerCount, HttpParams params)
          Deprecated. (4.2) use DefaultConnectingIOReactor(IOReactorConfig)
DefaultConnectingIOReactor(int workerCount, ThreadFactory threadFactory, HttpParams params)
          Deprecated. (4.2) use DefaultConnectingIOReactor(IOReactorConfig, ThreadFactory)
DefaultConnectingIOReactor(IOReactorConfig config)
          Creates an instance of DefaultConnectingIOReactor with the given configuration.
DefaultConnectingIOReactor(IOReactorConfig config, ThreadFactory threadFactory)
          Creates an instance of DefaultConnectingIOReactor with the given configuration.
 
Method Summary
protected  void cancelRequests()
          Triggered to cancel pending session requests.
 SessionRequest connect(SocketAddress remoteAddress, SocketAddress localAddress, Object attachment, SessionRequestCallback callback)
          Requests a connection to a remote host.
protected  void processEvents(int readyCount)
          Triggered to process I/O events registered by the main Selector.
 
Methods inherited from class org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor
addChannel, addExceptionEvent, addExceptionEvent, awaitShutdown, doShutdown, execute, getAuditLog, getStatus, prepareSocket, registerChannel, setExceptionHandler, shutdown, shutdown
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.http.nio.reactor.IOReactor
execute, getStatus, shutdown, shutdown
 

Constructor Detail

DefaultConnectingIOReactor

public DefaultConnectingIOReactor(IOReactorConfig config,
                                  ThreadFactory threadFactory)
                           throws IOReactorException
Creates an instance of DefaultConnectingIOReactor with the given configuration.

Parameters:
config - I/O reactor configuration.
threadFactory - the factory to create threads. Can be null.
Throws:
IOReactorException - in case if a non-recoverable I/O error.
Since:
4.2

DefaultConnectingIOReactor

public DefaultConnectingIOReactor(IOReactorConfig config)
                           throws IOReactorException
Creates an instance of DefaultConnectingIOReactor with the given configuration.

Parameters:
config - I/O reactor configuration. Can be null.
Throws:
IOReactorException - in case if a non-recoverable I/O error.
Since:
4.2

DefaultConnectingIOReactor

public DefaultConnectingIOReactor()
                           throws IOReactorException
Creates an instance of DefaultConnectingIOReactor with default configuration.

Throws:
IOReactorException - in case if a non-recoverable I/O error.
Since:
4.2

DefaultConnectingIOReactor

@Deprecated
public DefaultConnectingIOReactor(int workerCount,
                                             ThreadFactory threadFactory,
                                             HttpParams params)
                           throws IOReactorException
Deprecated. (4.2) use DefaultConnectingIOReactor(IOReactorConfig, ThreadFactory)

Throws:
IOReactorException

DefaultConnectingIOReactor

@Deprecated
public DefaultConnectingIOReactor(int workerCount,
                                             HttpParams params)
                           throws IOReactorException
Deprecated. (4.2) use DefaultConnectingIOReactor(IOReactorConfig)

Throws:
IOReactorException
Method Detail

cancelRequests

protected void cancelRequests()
                       throws IOReactorException
Description copied from class: AbstractMultiworkerIOReactor
Triggered to cancel pending session requests.

Super-classes can implement this method to react to the event.

Specified by:
cancelRequests in class AbstractMultiworkerIOReactor
Throws:
IOReactorException - in case if a non-recoverable I/O error.

processEvents

protected void processEvents(int readyCount)
                      throws IOReactorException
Description copied from class: AbstractMultiworkerIOReactor
Triggered to process I/O events registered by the main Selector.

Super-classes can implement this method to react to the event.

Specified by:
processEvents in class AbstractMultiworkerIOReactor
Parameters:
readyCount - event count.
Throws:
IOReactorException - in case if a non-recoverable I/O error.

connect

public SessionRequest connect(SocketAddress remoteAddress,
                              SocketAddress localAddress,
                              Object attachment,
                              SessionRequestCallback callback)
Description copied from interface: ConnectingIOReactor
Requests a connection to a remote host.

Opening a connection to a remote host usually tends to be a time consuming process and may take a while to complete. One can monitor and control the process of session initialization by means of the SessionRequest interface.

There are several parameters one can use to exert a greater control over the process of session initialization:

A non-null local socket address parameter can be used to bind the socket to a specific local address.

An attachment object can added to the new session's context upon initialization. This object can be used to pass an initial processing state to the protocol handler.

It is often desirable to be able to react to the completion of a session request asynchronously without having to wait for it, blocking the current thread of execution. One can optionally provide an implementation SessionRequestCallback instance to get notified of events related to session requests, such as request completion, cancellation, failure or timeout.

Specified by:
connect in interface ConnectingIOReactor
Parameters:
remoteAddress - the socket address of the remote host.
localAddress - the local socket address. Can be null, in which can the default local address and a random port will be used.
attachment - the attachment object. Can be null.
callback - interface. Can be null.
Returns:
session request object.


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