/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.nio.sctp;

/**

 * A class that represents an SCTP association.

 *

 * <P> An association exists between two SCTP endpoints. Each endpoint is

 * represented by a list of transport addresses through which that endpoint can

 * be reached and from which it will originate SCTP messages. The association

 * spans over all of the possible source/destination combinations which may be

 * generated from each endpoint's lists of addresses.

 *

 * <P> Associations are identified by their Association ID.

 * Association ID's are guaranteed to be unique for the lifetime of the

 * association. An association ID may be reused after the association has been

 * shutdown. An association ID is not unique across multiple SCTP channels.

 * An Association's local and remote addresses may change if the SCTP

 * implementation supports <I>Dynamic Address Reconfiguration</I> as defined by

 * <A HREF="http://tools.ietf.org/html/rfc5061">RFC5061</A>, see the

 * {@code bindAddress} and {@code unbindAddress} methods of {@link SctpChannel},

 * {@link SctpServerChannel}, and {@link SctpMultiChannel}.

 *

 * <P> An {@code Association} is returned from an {@link

 * SctpChannel#association SctpChannel} or an {@link

 * SctpMultiChannel#associations SctpMultiChannel}, as well

 * as being given as a parameter to {@link NotificationHandler

 * NotificationHandler} methods.

 *

 * @since 1.7

 */

@jdk.Exported

public class Association {

    private final int associationID;

    private final int maxInStreams;

    private final int maxOutStreams;

    /**

     * Initializes a new instance of this class.

     *

     * @param  associationID

     *         The association ID

     * @param  maxInStreams

     *         The maximum number of inbound streams

     * @param  maxOutStreams

     *         The maximum number of outbound streams

     */

    protected Association(int associationID,

                          int maxInStreams,

                          int maxOutStreams) {

        this.associationID = associationID;

        this.maxInStreams = maxInStreams;

        this.maxOutStreams = maxOutStreams;

    }

    /**

     * Returns the associationID.

     *

     * @return  The association ID

     */

    public final int associationID() {

        return associationID;

    };

    /**

     * Returns the maximum number of inbound streams that this association

     * supports.

     *

     * <P> Data received on this association will be on stream number

     * {@code s}, where {@code 0 <= s < maxInboundStreams()}.

     *

     * @return  The maximum number of inbound streams

     */

    public final int maxInboundStreams() {

        return maxInStreams;

    };

    /**

     * Returns the maximum number of outbound streams that this association

     * supports.

     *

     * <P> Data sent on this association must be on stream number

     * {@code s}, where {@code 0 <= s < maxOutboundStreams()}.

     *

     * @return  The maximum number of outbound streams

     */

    public final int maxOutboundStreams() {

        return maxOutStreams;

    };

}