/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.mina.core.write;

import java.net.SocketAddress;

import org.apache.mina.core.filterchain.IoFilter;
import org.apache.mina.core.future.WriteFuture;
import org.apache.mina.core.session.IoSession;

/**
 * Represents write request fired by {@link IoSession#write(Object)}.
 *
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 */
public interface WriteRequest {
    /**
     * Returns the {@link WriteRequest} which was requested originally,
     * which is not transformed by any {@link IoFilter}.
     */
    WriteRequest getOriginalRequest();

    /**
     * Returns {@link WriteFuture} that is associated with this write request.
     */
    WriteFuture getFuture();
    
    /**
     * Returns a message object to be written.
     */
    Object getMessage();

    /**
     * Returns the destination of this write request.
     *
     * @return <tt>null</tt> for the default destination
     */
    SocketAddress getDestination();
}