io.netty.example.http2.tiles.Http2OrHttpHandler Maven / Gradle / Ivy
/*
* Copyright 2015 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.http2.tiles;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http2.DefaultHttp2Connection;
import io.netty.handler.codec.http2.HttpToHttp2ConnectionHandlerBuilder;
import io.netty.handler.codec.http2.InboundHttp2ToHttpAdapter;
import io.netty.handler.codec.http2.InboundHttp2ToHttpAdapterBuilder;
import io.netty.handler.ssl.ApplicationProtocolNames;
import io.netty.handler.ssl.ApplicationProtocolNegotiationHandler;
/**
* Used during protocol negotiation, the main function of this handler is to
* return the HTTP/1.1 or HTTP/2 handler once the protocol has been negotiated.
*/
public class Http2OrHttpHandler extends ApplicationProtocolNegotiationHandler {
private static final int MAX_CONTENT_LENGTH = 1024 * 100;
protected Http2OrHttpHandler() {
super(ApplicationProtocolNames.HTTP_1_1);
}
@Override
protected void configurePipeline(ChannelHandlerContext ctx, String protocol) throws Exception {
if (ApplicationProtocolNames.HTTP_2.equals(protocol)) {
configureHttp2(ctx);
return;
}
if (ApplicationProtocolNames.HTTP_1_1.equals(protocol)) {
configureHttp1(ctx);
return;
}
throw new IllegalStateException("unknown protocol: " + protocol);
}
private static void configureHttp2(ChannelHandlerContext ctx) {
DefaultHttp2Connection connection = new DefaultHttp2Connection(true);
InboundHttp2ToHttpAdapter listener = new InboundHttp2ToHttpAdapterBuilder(connection)
.propagateSettings(true).validateHttpHeaders(false)
.maxContentLength(MAX_CONTENT_LENGTH).build();
ctx.pipeline().addLast(new HttpToHttp2ConnectionHandlerBuilder()
.frameListener(listener)
// .frameLogger(TilesHttp2ToHttpHandler.logger)
.connection(connection).build());
ctx.pipeline().addLast(new Http2RequestHandler());
}
private static void configureHttp1(ChannelHandlerContext ctx) throws Exception {
ctx.pipeline().addLast(new HttpServerCodec(),
new HttpObjectAggregator(MAX_CONTENT_LENGTH),
new FallbackRequestHandler());
}
}