ch.cern.hbase.thirdparty.io.netty.example.http2.tiles.FallbackRequestHandler Maven / Gradle / Ivy
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Pulls down netty.io, relocates nd then makes a fat new jar with them all in it.
The newest version!
/*
* 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 ch.cern.hbase.thirdparty.io.netty.example.http2.tiles;
import static ch.cern.hbase.thirdparty.io.netty.buffer.Unpooled.copiedBuffer;
import static ch.cern.hbase.thirdparty.io.netty.buffer.Unpooled.unreleasableBuffer;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpHeaderNames.CONTENT_TYPE;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus.CONTINUE;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus.OK;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
import static ch.cern.hbase.thirdparty.io.netty.util.CharsetUtil.UTF_8;
import ch.cern.hbase.thirdparty.io.netty.buffer.ByteBuf;
import ch.cern.hbase.thirdparty.io.netty.channel.ChannelFutureListener;
import ch.cern.hbase.thirdparty.io.netty.channel.ChannelHandlerContext;
import ch.cern.hbase.thirdparty.io.netty.channel.SimpleChannelInboundHandler;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.DefaultFullHttpResponse;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.FullHttpResponse;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpUtil;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpRequest;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http2.Http2CodecUtil;
/**
* Handles the exceptional case where HTTP 1.x was negotiated under TLS.
*/
public final class FallbackRequestHandler extends SimpleChannelInboundHandler {
private static final ByteBuf response = unreleasableBuffer(copiedBuffer(""
+ "To view the example you need a browser that supports HTTP/2 ("
+ Http2CodecUtil.TLS_UPGRADE_PROTOCOL_NAME
+ ")
", UTF_8)).asReadOnly();
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest req) throws Exception {
if (HttpUtil.is100ContinueExpected(req)) {
ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
}
ByteBuf content = ctx.alloc().buffer();
content.writeBytes(response.duplicate());
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());
ctx.write(response).addListener(ChannelFutureListener.CLOSE);
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
}