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## org.apache.catalina.valves
Class CometConnectionManagerValve

    java.lang.Object
      org.apache.catalina.util.LifecycleBase
          org.apache.catalina.util.LifecycleMBeanBase
              org.apache.catalina.valves.ValveBase
                  org.apache.catalina.valves.CometConnectionManagerValve

All Implemented Interfaces:
  EventListener, MBeanRegistration, HttpSessionListener, Contained, Lifecycle, LifecycleListener, Valve

    public class CometConnectionManagerValve

extends ValveBase
implements HttpSessionListener, LifecycleListener

Implementation of a Valve that tracks Comet connections, and closes them when the associated session expires or the webapp is reloaded.

This Valve should be attached to a Context.

Version:
  $Id: CometConnectionManagerValve.java 1301272 2012-03-15 23:41:08Z markt $
Author:
  Remy Maucherat

Field Summary
`protected List<Request>` | `cometRequests` List of current Comet connections.
`protected String` | `cometRequestsAttribute` Name of session attribute used to store list of comet connections.
`protected static String` | `info` The descriptive information related to this implementation.

Fields inherited from class org.apache.catalina.valves.ValveBase
`asyncSupported, container, containerLog, next, sm`

Fields inherited from class org.apache.catalina.util.LifecycleMBeanBase
`mserver`

Fields inherited from interface org.apache.catalina.Lifecycle
`AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT`

Constructor Summary
`CometConnectionManagerValve()`

Method Summary
`void` | `event(Request request, Response response, CometEvent event)` Use events to update the connection state.
`String` | `getInfo()` Return descriptive information about this Valve implementation.
`void` | `invoke(Request request, Response response)` Register requests for tracking, whenever needed.
`void` | `lifecycleEvent(LifecycleEvent event)` Acknowledge the occurrence of the specified event.
`void` | `sessionCreated(HttpSessionEvent se)` Notification that a session was created.
`void` | `sessionDestroyed(HttpSessionEvent se)` Notification that a session is about to be invalidated.
`protected void` | `startInternal()` Start this component and implement the requirements of `LifecycleBase.startInternal()`.
`protected void` | `stopInternal()` Stop this component and implement the requirements of `LifecycleBase.stopInternal()`.

Methods inherited from class org.apache.catalina.valves.ValveBase
`backgroundProcess, getContainer, getDomainInternal, getNext, getObjectNameKeyProperties, initInternal, isAsyncSupported, setAsyncSupported, setContainer, setNext, toString`

Methods inherited from class org.apache.catalina.util.LifecycleMBeanBase
`destroyInternal, getDomain, getObjectName, postDeregister, postRegister, preDeregister, preRegister, register, setDomain, unregister`

Methods inherited from class org.apache.catalina.util.LifecycleBase
`addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, init, removeLifecycleListener, setState, setState, start, stop`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### info

    protected static final String info

  The descriptive information related to this implementation.

  See Also:
    Constant Field Values

### cometRequests

    protected final List<Request> cometRequests

  List of current Comet connections.

### cometRequestsAttribute

    protected final String cometRequestsAttribute

  Name of session attribute used to store list of comet connections.

  See Also:
    Constant Field Values

Constructor Detail

### CometConnectionManagerValve

    public CometConnectionManagerValve()

Method Detail

### startInternal

    protected void startInternal()
                          throws LifecycleException

  Start this component and implement the requirements of `LifecycleBase.startInternal()`.

  Overrides:
    `startInternal` in class `ValveBase`
  Throws:
    `LifecycleException` - if this component detects a fatal error that prevents this component from being used

### stopInternal

    protected void stopInternal()
                         throws LifecycleException

  Stop this component and implement the requirements of `LifecycleBase.stopInternal()`.

  Overrides:
    `stopInternal` in class `ValveBase`
  Throws:
    `LifecycleException` - if this component detects a fatal error that prevents this component from being used

### lifecycleEvent

    public void lifecycleEvent(LifecycleEvent event)

  Description copied from interface: `LifecycleListener`
  Acknowledge the occurrence of the specified event.

  Specified by:
    `lifecycleEvent` in interface `LifecycleListener`
  Parameters:
    `event` - LifecycleEvent that has occurred

### getInfo

    public String getInfo()

  Return descriptive information about this Valve implementation.

  Specified by:
    `getInfo` in interface `Valve`
  Overrides:
    `getInfo` in class `ValveBase`

### invoke

    public void invoke(Request request,
                       Response response)
                throws IOException,
                       ServletException

  Register requests for tracking, whenever needed.

  Specified by:
    `invoke` in interface `Valve`
  Specified by:
    `invoke` in class `ValveBase`
  Parameters:
    `request` - The servlet request to be processed
    `response` - The servlet response to be created
  Throws:
    `IOException` - if an input/output error occurs
    `ServletException` - if a servlet error occurs

### event

    public void event(Request request,
                      Response response,
                      CometEvent event)
               throws IOException,
                      ServletException

  Use events to update the connection state.

  Specified by:
    `event` in interface `Valve`
  Overrides:
    `event` in class `ValveBase`
  Parameters:
    `request` - The servlet request to be processed
    `response` - The servlet response to be created
  Throws:
    `IOException` - if an input/output error occurs
    `ServletException` - if a servlet error occurs

### sessionCreated

    public void sessionCreated(HttpSessionEvent se)

  Description copied from interface: `javax.servlet.http.HttpSessionListener`
  Notification that a session was created.

  Specified by:
    `sessionCreated` in interface `HttpSessionListener`
  Parameters:
    `se` - the notification event

### sessionDestroyed

    public void sessionDestroyed(HttpSessionEvent se)

  Description copied from interface: `javax.servlet.http.HttpSessionListener`
  Notification that a session is about to be invalidated.

  Specified by:
    `sessionDestroyed` in interface `HttpSessionListener`
  Parameters:
    `se` - the notification event

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