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A standalone RTMP client library ported from the Red5 project
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package org.red5.server.messaging;

/*
 * RED5 Open Source Flash Server - http://code.google.com/p/red5/
 * 
 * Copyright (c) 2006-2010 by respective authors (see below). All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License as published by the Free Software 
 * Foundation; either version 2.1 of the License, or (at your option) any later 
 * version. 
 * 
 * This library 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along 
 * with this library; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */

import java.io.IOException;
import java.util.List;
import java.util.Map;

/**
 * Input Endpoint for a consumer to connect.
 * 
 * @author The Red5 Project ([email protected])
 * @author Steven Gong ([email protected])
 */
public interface IMessageInput {
	/**
	 * Pull message from this input endpoint. Return
	 * w/o waiting.
	 * @return The pulled message or null if message is
	 * not available.
	 * @throws IOException on error
	 */
	IMessage pullMessage() throws IOException;

	/**
	 * Pull message from this input endpoint. Wait
	 * wait milliseconds if message is not available.
	 * @param wait milliseconds to wait when message is not
	 * available.
	 * @return The pulled message or null if message is
	 * not available.
	 */
	IMessage pullMessage(long wait);

	/**
	 * Connect to a consumer.
	 * 
	 * @param consumer         Consumer
	 * @param paramMap         Parameters map
	 * @return true when successfully subscribed,
	 * false otherwise.
	 */
	boolean subscribe(IConsumer consumer, Map paramMap);

	/**
	 * Disconnect from a consumer.
	 * 
	 * @param consumer    Consumer to disconnect
	 * @return true when successfully unsubscribed,
	 * false otherwise.
	 */
	boolean unsubscribe(IConsumer consumer);

	/**
     * Getter for consumers list.
     *
     * @return Consumers.
     */
    List getConsumers();

	/**
	 * Send OOB Control Message to all providers on the other side of pipe.
	 * 
	 * @param consumer
	 *            The consumer that sends the message
	 * @param oobCtrlMsg
     *            Out-of-band control message
	 */
	void sendOOBControlMessage(IConsumer consumer, OOBControlMessage oobCtrlMsg);
}