netty5/example/src/main/java/io/netty/example/http/cors/OkResponseHandler.java

/*
 * Copyright 2013 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 io.netty.example.http.cors;

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;

/**
 * A simple handler which will simple return a successful Http
 * response for any request.
 */
public class OkResponseHandler extends SimpleChannelInboundHandler<Object> {
    @Override
    public void channelRead0(ChannelHandlerContext ctx, Object msg) {
        final FullHttpResponse response = new DefaultFullHttpResponse(
                HttpVersion.HTTP_1_1, HttpResponseStatus.OK, Unpooled.EMPTY_BUFFER);
        response.headers().set("custom-response-header", "Some value");
        ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
    }
}