781a85520c
Motivation: Adding an example that showcases Netty’s HTTP/2 codec and that is slightly more complex than the existing hello-world example. It is based on the Gopher tiles example available here: https://http2.golang.org/gophertiles?latency=0 Modifications: Moved current http2 example to http2/helloworld. Added http2 tiles example under http2/tiles. Result: A Netty tiles example is available.
63 lines
2.5 KiB
Java
63 lines
2.5 KiB
Java
/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the 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
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* under the License.
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*/
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package io.netty.example.http2.tiles;
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import static io.netty.handler.codec.http.HttpHeaderNames.CONNECTION;
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import static io.netty.handler.codec.http.HttpHeaderUtil.isKeepAlive;
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import static io.netty.handler.codec.http.HttpResponseStatus.CONTINUE;
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import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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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.handler.codec.http.DefaultFullHttpResponse;
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import io.netty.handler.codec.http.FullHttpRequest;
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import io.netty.handler.codec.http.FullHttpResponse;
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import io.netty.handler.codec.http.HttpHeaderUtil;
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import io.netty.handler.codec.http.HttpHeaderValues;
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import java.util.concurrent.TimeUnit;
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/**
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* Handles the requests for the tiled image using HTTP 1.x as a protocol.
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*/
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public final class Http1RequestHandler extends Http2RequestHandler {
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@Override
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protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
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if (HttpHeaderUtil.is100ContinueExpected(request)) {
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ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
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}
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super.channelRead0(ctx, request);
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}
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@Override
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protected void sendResponse(final ChannelHandlerContext ctx, String streamId, int latency,
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final FullHttpResponse response, final FullHttpRequest request) {
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HttpHeaderUtil.setContentLength(response, response.content().readableBytes());
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ctx.executor().schedule(new Runnable() {
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@Override
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public void run() {
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if (isKeepAlive(request)) {
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response.headers().set(CONNECTION, HttpHeaderValues.KEEP_ALIVE);
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ctx.writeAndFlush(response);
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} else {
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ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
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}
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}
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}, latency, TimeUnit.MILLISECONDS);
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}
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}
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