messagepropagater.java

JXTA&#8482 is a set of open, generalized peer-to-peer (P2P) protocols that allow any networked devi

/*
 * Copyright (c) 2001-2007 Sun Microsystems, Inc.  All rights reserved.
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 *     developed by Sun Microsystems, Inc. for JXTA(TM) technology." 
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package net.jxta.endpoint;


/**
 * A MessagePropagater is a MessageTransport that can send propagated
 * (multicast) messages.
 *
 * @see net.jxta.endpoint.MessageTransport
 * @see net.jxta.endpoint.Message
 * @see net.jxta.endpoint.Messenger
 * @see net.jxta.endpoint.EndpointService
 * @see net.jxta.endpoint.MessageSender
 * @see net.jxta.endpoint.MessageReceiver
 */
public interface MessagePropagater extends MessageTransport {

    /**
     * Returns the {@link EndpointAddress} which will be used as the source
     * address for all messages sent by this message sender. This is the
     * "preferred" address to which replies should be sent. This address is not
     * necessarily the best or only address by which the peer may be reached.
     * <p/>
     * The public address may also be for a different message transport.
     *
     * @return an EndpointAddress containing the public address for this
     *         message receiver.
     */
    public EndpointAddress getPublicAddress();

    /**
     * Propagates a Message via this Message Transport.
     *
     * @param msg           The Message to be propagated.
     * @param serviceName   Contains the name of the destination service, if any.
     *                      This will be integrated into the destination address.
     * @param serviceParams Contains the parameters associated with the service,
     *                      if any. This will be integrated into the destination address.
     * @param initialTTL    The requested initial TTL for this message. This value
     *                      may be reduced by the implementation.
     * @return {@code true} if the Message was propagated otherwise
     *         {@code false}.
     */
    public boolean propagate(Message msg, String serviceName, String serviceParams, int initialTTL);
}