godfinger.http.FaviconHandler.java Source code

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Here is the source code for godfinger.http.FaviconHandler.java

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/*
 * Copyright 2015 Godfinger Framework
 *
 * Godfinger Framework 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 godfinger.http;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.HttpRequest;

import static io.netty.channel.ChannelFutureListener.CLOSE;
import static io.netty.handler.codec.http.HttpHeaders.Names.CONNECTION;
import static io.netty.handler.codec.http.HttpHeaders.Values.KEEP_ALIVE;
import static io.netty.handler.codec.http.HttpHeaders.isKeepAlive;
import static io.netty.handler.codec.http.HttpResponseStatus.NOT_FOUND;

public class FaviconHandler extends ChannelInboundHandlerAdapter {

    @Override
    public void channelRead(final ChannelHandlerContext ctx, final Object msg) throws Exception {
        if (msg instanceof HttpRequest) {
            HttpRequest request = (HttpRequest) msg;
            if ("/favicon.ico".equals(request.getUri())) {
                DefaultFullHttpResponse response = new DefaultFullHttpResponse(request.getProtocolVersion(),
                        NOT_FOUND);
                if (isKeepAlive(request)) {
                    response.headers().set(CONNECTION, KEEP_ALIVE);
                    ctx.writeAndFlush(response);
                } else {
                    ctx.writeAndFlush(response).addListener(CLOSE);
                }
                return;
            }
        }
        ctx.fireChannelRead(msg);
    }

}