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Pulls down netty.io, relocates nd then makes a fat new jar with them all in it.
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/*
* Copyright 2012 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.http.websocketx.server;
import ch.cern.hbase.thirdparty.io.netty.buffer.ByteBuf;
import ch.cern.hbase.thirdparty.io.netty.buffer.Unpooled;
import ch.cern.hbase.thirdparty.io.netty.channel.ChannelFuture;
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.ChannelPipeline;
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.FullHttpRequest;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.FullHttpResponse;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpHeaderNames;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpRequest;
import ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpUtil;
import ch.cern.hbase.thirdparty.io.netty.handler.ssl.SslHandler;
import ch.cern.hbase.thirdparty.io.netty.util.CharsetUtil;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpMethod.GET;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus.BAD_REQUEST;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus.FORBIDDEN;
import static ch.cern.hbase.thirdparty.io.netty.handler.codec.http.HttpResponseStatus.NOT_FOUND;
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;
/**
* Outputs index page content.
*/
public class WebSocketIndexPageHandler extends SimpleChannelInboundHandler {
private final String websocketPath;
public WebSocketIndexPageHandler(String websocketPath) {
this.websocketPath = websocketPath;
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest req) throws Exception {
// Handle a bad request.
if (!req.decoderResult().isSuccess()) {
sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, BAD_REQUEST));
return;
}
// Allow only GET methods.
if (!GET.equals(req.method())) {
sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, FORBIDDEN));
return;
}
// Send the index page
if ("/".equals(req.uri()) || "/index.html".equals(req.uri())) {
String webSocketLocation = getWebSocketLocation(ctx.pipeline(), req, websocketPath);
ByteBuf content = WebSocketServerIndexPage.getContent(webSocketLocation);
FullHttpResponse res = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
res.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html; charset=UTF-8");
HttpUtil.setContentLength(res, content.readableBytes());
sendHttpResponse(ctx, req, res);
} else {
sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, NOT_FOUND));
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
private static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest req, FullHttpResponse res) {
// Generate an error page if response getStatus code is not OK (200).
if (res.status().code() != 200) {
ByteBuf buf = Unpooled.copiedBuffer(res.status().toString(), CharsetUtil.UTF_8);
res.content().writeBytes(buf);
buf.release();
HttpUtil.setContentLength(res, res.content().readableBytes());
}
// Send the response and close the connection if necessary.
ChannelFuture f = ctx.channel().writeAndFlush(res);
if (!HttpUtil.isKeepAlive(req) || res.status().code() != 200) {
f.addListener(ChannelFutureListener.CLOSE);
}
}
private static String getWebSocketLocation(ChannelPipeline cp, HttpRequest req, String path) {
String protocol = "ws";
if (cp.get(SslHandler.class) != null) {
// SSL in use so use Secure WebSockets
protocol = "wss";
}
return protocol + "://" + req.headers().get(HttpHeaderNames.HOST) + path;
}
}