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Removed io.netty.example.http.websocket because

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io.netty.codec.http.websocket has been removed.
This commit is contained in:
vibul 2011-12-11 21:13:26 +11:00
parent 7438a9ac87
commit dc1655890e
4 changed files with 0 additions and 329 deletions
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46
src/main/java/io/netty/example/http/websocket/WebSocketServer.java
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/*
* Copyright 2011 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.http.websocket;
import java.net.InetSocketAddress;
import java.util.concurrent.Executors;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.socket.nio.NioServerSocketChannelFactory;
/**
* An HTTP server which serves Web Socket requests at:
*
* http://localhost:8080/websocket
*
* Open your browser at http://localhost:8080/, then the demo page will be
* loaded and a Web Socket connection will be made automatically.
*/
public class WebSocketServer {
public static void main(String[] args) {
// Configure the server.
ServerBootstrap bootstrap = new ServerBootstrap(
new NioServerSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
// Set up the event pipeline factory.
bootstrap.setPipelineFactory(new WebSocketServerPipelineFactory());
// Bind and start to accept incoming connections.
bootstrap.bind(new InetSocketAddress(8080));
}
}

182
src/main/java/io/netty/example/http/websocket/WebSocketServerHandler.java
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/*
* Copyright 2011 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.http.websocket;
import static io.netty.handler.codec.http.HttpHeaders.*;
import static io.netty.handler.codec.http.HttpHeaders.Names.*;
import static io.netty.handler.codec.http.HttpHeaders.Values.*;
import static io.netty.handler.codec.http.HttpMethod.*;
import static io.netty.handler.codec.http.HttpResponseStatus.*;
import static io.netty.handler.codec.http.HttpVersion.*;
import java.security.MessageDigest;
import io.netty.buffer.ChannelBuffer;
import io.netty.buffer.ChannelBuffers;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ExceptionEvent;
import io.netty.channel.MessageEvent;
import io.netty.channel.SimpleChannelUpstreamHandler;
import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpHeaders.Names;
import io.netty.handler.codec.http.HttpHeaders.Values;
import io.netty.handler.codec.http.websocket.DefaultWebSocketFrame;
import io.netty.handler.codec.http.websocket.WebSocketFrame;
import io.netty.handler.codec.http.websocket.WebSocketFrameDecoder;
import io.netty.handler.codec.http.websocket.WebSocketFrameEncoder;
import io.netty.util.CharsetUtil;
/**
*/
public class WebSocketServerHandler extends SimpleChannelUpstreamHandler {
private static final String WEBSOCKET_PATH = "/websocket";
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Object msg = e.getMessage();
if (msg instanceof HttpRequest) {
handleHttpRequest(ctx, (HttpRequest) msg);
} else if (msg instanceof WebSocketFrame) {
handleWebSocketFrame(ctx, (WebSocketFrame) msg);
}
}
private void handleHttpRequest(ChannelHandlerContext ctx, HttpRequest req) throws Exception {
// Allow only GET methods.
if (req.getMethod() != GET) {
sendHttpResponse(
ctx, req, new DefaultHttpResponse(HTTP_1_1, FORBIDDEN));
return;
}
// Send the demo page.
if (req.getUri().equals("/")) {
HttpResponse res = new DefaultHttpResponse(HTTP_1_1, OK);
ChannelBuffer content =
WebSocketServerIndexPage.getContent(getWebSocketLocation(req));
res.setHeader(CONTENT_TYPE, "text/html; charset=UTF-8");
setContentLength(res, content.readableBytes());
res.setContent(content);
sendHttpResponse(ctx, req, res);
return;
}
// Serve the WebSocket handshake request.
if (req.getUri().equals(WEBSOCKET_PATH) &&
Values.UPGRADE.equalsIgnoreCase(req.getHeader(CONNECTION)) &&
WEBSOCKET.equalsIgnoreCase(req.getHeader(Names.UPGRADE))) {
// Create the WebSocket handshake response.
HttpResponse res = new DefaultHttpResponse(
HTTP_1_1,
new HttpResponseStatus(101, "Web Socket Protocol Handshake"));
res.addHeader(Names.UPGRADE, WEBSOCKET);
res.addHeader(CONNECTION, Values.UPGRADE);
// Fill in the headers and contents depending on handshake method.
if (req.containsHeader(SEC_WEBSOCKET_KEY1) &&
req.containsHeader(SEC_WEBSOCKET_KEY2)) {
// New handshake method with a challenge:
res.addHeader(SEC_WEBSOCKET_ORIGIN, req.getHeader(ORIGIN));
res.addHeader(SEC_WEBSOCKET_LOCATION, getWebSocketLocation(req));
String protocol = req.getHeader(SEC_WEBSOCKET_PROTOCOL);
if (protocol != null) {
res.addHeader(SEC_WEBSOCKET_PROTOCOL, protocol);
}
// Calculate the answer of the challenge.
String key1 = req.getHeader(SEC_WEBSOCKET_KEY1);
String key2 = req.getHeader(SEC_WEBSOCKET_KEY2);
int a = (int) (Long.parseLong(key1.replaceAll("[^0-9]", "")) / key1.replaceAll("[^ ]", "").length());
int b = (int) (Long.parseLong(key2.replaceAll("[^0-9]", "")) / key2.replaceAll("[^ ]", "").length());
long c = req.getContent().readLong();
ChannelBuffer input = ChannelBuffers.buffer(16);
input.writeInt(a);
input.writeInt(b);
input.writeLong(c);
ChannelBuffer output = ChannelBuffers.wrappedBuffer(
MessageDigest.getInstance("MD5").digest(input.array()));
res.setContent(output);
} else {
// Old handshake method with no challenge:
res.addHeader(WEBSOCKET_ORIGIN, req.getHeader(ORIGIN));
res.addHeader(WEBSOCKET_LOCATION, getWebSocketLocation(req));
String protocol = req.getHeader(WEBSOCKET_PROTOCOL);
if (protocol != null) {
res.addHeader(WEBSOCKET_PROTOCOL, protocol);
}
}
// Upgrade the connection and send the handshake response.
ChannelPipeline p = ctx.getChannel().getPipeline();
p.remove("aggregator");
p.replace("decoder", "wsdecoder", new WebSocketFrameDecoder());
ctx.getChannel().write(res);
p.replace("encoder", "wsencoder", new WebSocketFrameEncoder());
return;
}
// Send an error page otherwise.
sendHttpResponse(
ctx, req, new DefaultHttpResponse(HTTP_1_1, FORBIDDEN));
}
private void handleWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame) {
// Send the uppercased string back.
ctx.getChannel().write(
new DefaultWebSocketFrame(frame.getTextData().toUpperCase()));
}
private void sendHttpResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
// Generate an error page if response status code is not OK (200).
if (res.getStatus().getCode() != 200) {
res.setContent(
ChannelBuffers.copiedBuffer(
res.getStatus().toString(), CharsetUtil.UTF_8));
setContentLength(res, res.getContent().readableBytes());
}
// Send the response and close the connection if necessary.
ChannelFuture f = ctx.getChannel().write(res);
if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {
f.addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e)
throws Exception {
e.getCause().printStackTrace();
e.getChannel().close();
}
private String getWebSocketLocation(HttpRequest req) {
return "ws://" + req.getHeader(HttpHeaders.Names.HOST) + WEBSOCKET_PATH;
}
}

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src/main/java/io/netty/example/http/websocket/WebSocketServerIndexPage.java
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/*
* Copyright 2011 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.http.websocket;
import io.netty.buffer.ChannelBuffer;
import io.netty.buffer.ChannelBuffers;
import io.netty.util.CharsetUtil;
/**
* Generates the demo HTML page which is served at http://localhost:8080/
*/
public class WebSocketServerIndexPage {
private static final String NEWLINE = "\r\n";
public static ChannelBuffer getContent(String webSocketLocation) {
return ChannelBuffers.copiedBuffer(
"<html><head><title>Web Socket Test</title></head>" + NEWLINE +
"<body>" + NEWLINE +
"<script type=\"text/javascript\">" + NEWLINE +
"var socket;" + NEWLINE +
"if (window.WebSocket) {" + NEWLINE +
" socket = new WebSocket(\"" + webSocketLocation + "\");" + NEWLINE +
" socket.onmessage = function(event) { alert(event.data); };" + NEWLINE +
" socket.onopen = function(event) { alert(\"Web Socket opened!\"); };" + NEWLINE +
" socket.onclose = function(event) { alert(\"Web Socket closed.\"); };" + NEWLINE +
"} else {" + NEWLINE +
" alert(\"Your browser does not support Web Socket.\");" + NEWLINE +
"}" + NEWLINE +
NEWLINE +
"function send(message) {" + NEWLINE +
" if (!window.WebSocket) { return; }" + NEWLINE +
" if (socket.readyState == WebSocket.OPEN) {" + NEWLINE +
" socket.send(message);" + NEWLINE +
" } else {" + NEWLINE +
" alert(\"The socket is not open.\");" + NEWLINE +
" }" + NEWLINE +
"}" + NEWLINE +
"</script>" + NEWLINE +
"<form onsubmit=\"return false;\">" + NEWLINE +
"<input type=\"text\" name=\"message\" value=\"Hello, World!\"/>" +
"<input type=\"button\" value=\"Send Web Socket Data\" onclick=\"send(this.form.message.value)\" />" + NEWLINE +
"</form>" + NEWLINE +
"</body>" + NEWLINE +
"</html>" + NEWLINE,
CharsetUtil.US_ASCII);
}
}

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src/main/java/io/netty/example/http/websocket/WebSocketServerPipelineFactory.java
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/*
* Copyright 2011 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.http.websocket;
import static io.netty.channel.Channels.*;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelPipelineFactory;
import io.netty.handler.codec.http.HttpChunkAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
/**
*/
public class WebSocketServerPipelineFactory implements ChannelPipelineFactory {
@Override
public ChannelPipeline getPipeline() throws Exception {
// Create a default pipeline implementation.
ChannelPipeline pipeline = pipeline();
pipeline.addLast("decoder", new HttpRequestDecoder());
pipeline.addLast("aggregator", new HttpChunkAggregator(65536));
pipeline.addLast("encoder", new HttpResponseEncoder());
pipeline.addLast("handler", new WebSocketServerHandler());
return pipeline;
}
}