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package com.sun.nio.sctp;

Notification emitted when an association has either opened or closed.
Since:
1.7/**
 * Notification emitted when an association has either opened or closed.
 *
 * @since 1.7
 */
public abstract class AssociationChangeNotification
    implements Notification
{
    
Defines the type of change event that happened to the association.
Since:
1.7/**
     * Defines the type of change event that happened to the association.
     *
     * @since 1.7
     */
    public enum AssocChangeEvent
    {
        
A new association is now ready and data may be exchanged with this peer.
/**
         * A new association is now ready and data may be exchanged with this peer.
         */
        COMM_UP,

        
The association has failed. A series of SCTP send failed notifications
will follow this notification, one for each outstanding message.
/**
         * The association has failed. A series of SCTP send failed notifications
         * will follow this notification, one for each outstanding message.
         */
       COMM_LOST,

        
SCTP has detected that the peer has restarted.
/**
         * SCTP has detected that the peer has restarted.
         */
       RESTART,

        
The association has gracefully closed.
/**
         * The association has gracefully closed.
         */
       SHUTDOWN,

        
The association failed to setup. If a message was sent on a SctpMultiChannel in non-blocking mode, an SCTP send failed notification will follow this notification for the outstanding message. /**
         * The association failed to setup. If a message was sent on a {@link
         * SctpMultiChannel} in non-blocking mode, an
         * SCTP send failed notification will follow this notification for the
         * outstanding message.
         */
       CANT_START
    }

    
Initializes a new instance of this class.
/**
     * Initializes a new instance of this class.
     */
    protected AssociationChangeNotification() {}

    
Returns the association that this notification is applicable to.
Returns:
 The association whose state has changed, or null if there is no association, that is CANT_START/**
     * Returns the association that this notification is applicable to.
     *
     * @return  The association whose state has changed, or {@code null} if
     *          there is no association, that is {@linkplain
     *          AssocChangeEvent#CANT_START CANT_START}
     */
    public abstract Association association();

    
Returns the type of change event.
Returns:
 The event/**
     * Returns the type of change event.
     *
     * @return  The event
     */
    public abstract AssocChangeEvent event();
}