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    1   /*
    2    * Copyright 2012 The Netty Project
    3    *
    4    * The Netty Project licenses this file to you under the Apache License,
    5    * version 2.0 (the "License"); you may not use this file except in compliance
    6    * with the License. You may obtain a copy of the License at:
    7    *
    8    *   http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    13   * License for the specific language governing permissions and limitations
    14   * under the License.
    15   */
    16  package org.jboss.netty.handler.codec.http;
    17
    18  import org.jboss.netty.channel.ChannelDownstreamHandler;
    19  import org.jboss.netty.channel.ChannelEvent;
    20  import org.jboss.netty.channel.ChannelHandlerContext;
    21  import org.jboss.netty.channel.ChannelUpstreamHandler;
    22
    23  /**
    24   * A combination of {@link HttpRequestDecoder} and {@link HttpResponseEncoder}
    25   * which enables easier server side HTTP implementation.
    26   * @see HttpClientCodec
    27   *
    28   * @apiviz.has org.jboss.netty.handler.codec.http.HttpRequestDecoder
    29   * @apiviz.has org.jboss.netty.handler.codec.http.HttpResponseEncoder
    30   */
    31  public class HttpServerCodec implements ChannelUpstreamHandler,
    32          ChannelDownstreamHandler {
    33
    34      private final HttpRequestDecoder decoder;
    35      private final HttpResponseEncoder encoder = new HttpResponseEncoder();
    36
    37      /**
    38       * Creates a new instance with the default decoder options
    39       * ({@code maxInitialLineLength (4096}}, {@code maxHeaderSize (8192)}, and
    40       * {@code maxChunkSize (8192)}).
    41       */
    42      public HttpServerCodec() {
    43          this(4096, 8192, 8192);
    44      }
    45
    46      /**
    47       * Creates a new instance with the specified decoder options.
    48       */
    49      public HttpServerCodec(
    50              int maxInitialLineLength, int maxHeaderSize, int maxChunkSize) {
    51          decoder = new HttpRequestDecoder(maxInitialLineLength, maxHeaderSize, maxChunkSize);
    52      }
    53
    54      public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e)
    55              throws Exception {
    56          decoder.handleUpstream(ctx, e);
    57      }
    58
    59      public void handleDownstream(ChannelHandlerContext ctx, ChannelEvent e)
    60              throws Exception {
    61          encoder.handleDownstream(ctx, e);
    62      }
    63  }