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## org.jivesoftware.openfire
Class IQRouter

    java.lang.Object
      org.jivesoftware.openfire.container.BasicModule
          org.jivesoftware.openfire.IQRouter

All Implemented Interfaces:
  Module

    public class IQRouter

extends BasicModule

Routes iq packets throughout the server. Routing is based on the recipient and sender addresses. The typical packet will often be routed twice, once from the sender to some internal server component for handling or processing, and then back to the router to be delivered to it's final destination.

Author:
  Iain Shigeoka

Constructor Summary
`IQRouter()` Creates a packet router.

Method Summary
`void` | `addHandler(IQHandler handler)` Adds a new IQHandler to the list of registered handler.
`void` | `addIQResultListener(String id, IQResultListener listener)` Adds an `IQResultListener` that will be invoked when an IQ result is sent to the server itself and is of type result or error.
`void` | `addIQResultListener(String id, IQResultListener listener, long timeoutmillis)` Adds an `IQResultListener` that will be invoked when an IQ result is sent to the server itself and is of type result or error.
`void` | `initialize(XMPPServer server)` Initializes the basic module.
`void` | `removeHandler(IQHandler handler)` Removes an IQHandler from the list of registered handler.
`void` | `route(IQ packet)` Performs the actual packet routing.
`void` | `routingFailed(JID receipient, Packet packet)` Notification message indicating that a packet has failed to be routed to the receipient.

Methods inherited from class org.jivesoftware.openfire.container.BasicModule
`destroy, getName, start, stop`

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

Constructor Detail

### IQRouter

    public IQRouter()

  Creates a packet router.

Method Detail

### route

    public void route(IQ packet)

  Performs the actual packet routing.

  You routing is considered 'quick' and implementations may not take excessive amounts of time to complete the routing. If routing will take a long amount of time, the actual routing should be done in another thread so this method returns quickly.

  ## Warning

  Be careful to enforce concurrency DbC of concurrent by synchronizing any accesses to class resources.

  Parameters:
    `packet` - The packet to route
  Throws:
    `NullPointerException` - If the packet is null

### addHandler

    public void addHandler(IQHandler handler)

  Adds a new IQHandler to the list of registered handler. The new IQHandler will be responsible for handling IQ packet whose namespace matches the namespace of the IQHandler.

  An IllegalArgumentException may be thrown if the IQHandler to register was already provided by the server. The server provides a certain list of IQHandlers when the server is started up.

  Parameters:
    `handler` - the IQHandler to add to the list of registered handler.

### removeHandler

    public void removeHandler(IQHandler handler)

  Removes an IQHandler from the list of registered handler. The IQHandler to remove was responsible for handling IQ packet whose namespace matches the namespace of the IQHandler.

  An IllegalArgumentException may be thrown if the IQHandler to remove was already provided by the server. The server provides a certain list of IQHandlers when the server is started up.

  Parameters:
    `handler` - the IQHandler to remove from the list of registered handler.

### addIQResultListener

    public void addIQResultListener(String id,
                                    IQResultListener listener)

  Adds an `IQResultListener` that will be invoked when an IQ result is sent to the server itself and is of type result or error. This is a nice way for the server to send IQ packets to other XMPP entities and be waked up when a response is received back.

  Once an IQ result was received, the listener will be invoked and removed from the list of listeners.

  If no result was received within one minute, the timeout method of the listener will be invoked and the listener will be removed from the list of listeners.

  Parameters:
    `id` - the id of the IQ packet being sent from the server to an XMPP entity.
    `listener` - the IQResultListener that will be invoked when an answer is received

### addIQResultListener

    public void addIQResultListener(String id,
                                    IQResultListener listener,
                                    long timeoutmillis)

  Adds an `IQResultListener` that will be invoked when an IQ result is sent to the server itself and is of type result or error. This is a nice way for the server to send IQ packets to other XMPP entities and be waked up when a response is received back.

  Once an IQ result was received, the listener will be invoked and removed from the list of listeners.

  If no result was received within the specified amount of milliseconds, the timeout method of the listener will be invoked and the listener will be removed from the list of listeners.

  Note that the listener will remain active for at least the specified timeout value. The listener will not be removed at the exact moment it times out. Instead, purging of timed out listeners is a periodic scheduled job.

  Parameters:
    `id` - the id of the IQ packet being sent from the server to an XMPP entity.
    `listener` - the IQResultListener that will be invoked when an answer is received.
    `timeoutmillis` - The amount of milliseconds after which waiting for a response should be stopped.

### initialize

    public void initialize(XMPPServer server)

  Description copied from class: `BasicModule`

  Initializes the basic module.

  Inheriting classes that choose to override this method MUST call this initialize() method before accessing BasicModule resources.

  Specified by:
    `initialize` in interface `Module`
  Overrides:
    `initialize` in class `BasicModule`
  Parameters:
    `server` - the server hosting this module.

### routingFailed

    public void routingFailed(JID receipient,
                              Packet packet)

  Notification message indicating that a packet has failed to be routed to the receipient.

  Parameters:
    `receipient` - address of the entity that failed to receive the packet.
    `packet` - IQ packet that failed to be sent to the receipient.

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