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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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.jboss.netty.handler.codec.http;

import org.jboss.netty.channel.ChannelDownstreamHandler;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelUpstreamHandler;

/**
 * A combination of {@link HttpRequestDecoder} and {@link HttpResponseEncoder}
 * which enables easier server side HTTP implementation.
 * @see HttpClientCodec
 *
 * @apiviz.has org.jboss.netty.handler.codec.http.HttpRequestDecoder
 * @apiviz.has org.jboss.netty.handler.codec.http.HttpResponseEncoder
 */
public class HttpServerCodec implements ChannelUpstreamHandler,
        ChannelDownstreamHandler {

    private final HttpRequestDecoder decoder;
    private final HttpResponseEncoder encoder = new HttpResponseEncoder();

    /**
     * Creates a new instance with the default decoder options
     * ({@code maxInitialLineLength (4096}}, {@code maxHeaderSize (8192)}, and
     * {@code maxChunkSize (8192)}).
     */
    public HttpServerCodec() {
        this(4096, 8192, 8192);
    }

    /**
     * Creates a new instance with the specified decoder options.
     */
    public HttpServerCodec(
            int maxInitialLineLength, int maxHeaderSize, int maxChunkSize) {
        decoder = new HttpRequestDecoder(maxInitialLineLength, maxHeaderSize, maxChunkSize);
    }

    public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e)
            throws Exception {
        decoder.handleUpstream(ctx, e);
    }

    public void handleDownstream(ChannelHandlerContext ctx, ChannelEvent e)
            throws Exception {
        encoder.handleDownstream(ctx, e);
    }
}