e4995be33c
Motivation: In many places Netty uses Unpooled.buffer(0) while should use EMPTY_BUFFER. We can't change this due to back compatibility in the constructors but can use Unpooled.EMPTY_BUFFER in some cases to ensure we not allocate at all. In others we can directly use the allocator either from the Channel / ChannelHandlerContext or the request / response. Modification: - Use Unpooled.EMPTY_BUFFER where possible - Use allocator where possible Result: Fixes #9345 for websockets and http package
40 lines
1.6 KiB
Java
40 lines
1.6 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version
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* 2.0 (the "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package io.netty.example.http.cors;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.ChannelFutureListener;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.SimpleChannelInboundHandler;
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import io.netty.handler.codec.http.DefaultFullHttpResponse;
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import io.netty.handler.codec.http.FullHttpResponse;
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import io.netty.handler.codec.http.HttpResponseStatus;
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import io.netty.handler.codec.http.HttpVersion;
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/**
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* A simple handler which will simple return a successful Http
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* response for any request.
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*/
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public class OkResponseHandler extends SimpleChannelInboundHandler<Object> {
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@Override
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public void channelRead0(ChannelHandlerContext ctx, Object msg) {
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final FullHttpResponse response = new DefaultFullHttpResponse(
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HttpVersion.HTTP_1_1, HttpResponseStatus.OK, Unpooled.EMPTY_BUFFER);
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response.headers().set("custom-response-header", "Some value");
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ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
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}
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}
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