ba28679775
Motivation:
The examples have not been updated since long time ago, showing various
issues fixed in this commit.
Modifications:
- Overall simplification to reduce LoC
- Use system properties to get options instead of parsing args.
- Minimize option validation
- Just use System.out/err instead of Logger
- Do not pass config as parameters - just access it directly
- Move the main logic to main(String[]) instead of creating a new
instance meaninglessly
- Update netty-build-21 to make checkstyle not complain
- Remove 'throws Exception' clause if possible
- Line wrap at 120 (previously at 80)
- Add an option to enable SSL for most examples
- Use ChannelFuture.sync() instead of await()
- Use System.out for the actual result. Use System.err otherwise.
- Delete examples that are not very useful:
- websocket/html5
- websocketx/sslserver
- localecho/multithreaded
- Add run-example.sh which simplifies launching an example from command
line
Result:
Shorter and simpler examples. A user can focus more on what it actually
does than miscellaneous stuff. A user can launch an example very
easily.
105 lines
4.6 KiB
Java
105 lines
4.6 KiB
Java
/*
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* Copyright 2012 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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//The MIT License
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//
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//Copyright (c) 2009 Carl Bystršm
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//
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//Permission is hereby granted, free of charge, to any person obtaining a copy
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//of this software and associated documentation files (the "Software"), to deal
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//in the Software without restriction, including without limitation the rights
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//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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//copies of the Software, and to permit persons to whom the Software is
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//furnished to do so, subject to the following conditions:
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//
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//The above copyright notice and this permission notice shall be included in
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//all copies or substantial portions of the Software.
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//
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//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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//THE SOFTWARE.
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package org.jboss.netty.example.http.websocketx.client;
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import org.jboss.netty.channel.Channel;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.ChannelStateEvent;
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import org.jboss.netty.channel.ExceptionEvent;
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import org.jboss.netty.channel.MessageEvent;
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import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
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import org.jboss.netty.handler.codec.http.HttpResponse;
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import org.jboss.netty.handler.codec.http.websocketx.CloseWebSocketFrame;
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import org.jboss.netty.handler.codec.http.websocketx.PingWebSocketFrame;
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import org.jboss.netty.handler.codec.http.websocketx.PongWebSocketFrame;
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import org.jboss.netty.handler.codec.http.websocketx.TextWebSocketFrame;
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import org.jboss.netty.handler.codec.http.websocketx.WebSocketClientHandshaker;
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import org.jboss.netty.handler.codec.http.websocketx.WebSocketFrame;
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import org.jboss.netty.util.CharsetUtil;
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public class WebSocketClientHandler extends SimpleChannelUpstreamHandler {
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private final WebSocketClientHandshaker handshaker;
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public WebSocketClientHandler(WebSocketClientHandshaker handshaker) {
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this.handshaker = handshaker;
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}
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@Override
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public void channelClosed(ChannelHandlerContext ctx, ChannelStateEvent e) {
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System.err.println("WebSocket Client disconnected!");
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}
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@Override
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public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
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Channel ch = ctx.getChannel();
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if (!handshaker.isHandshakeComplete()) {
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handshaker.finishHandshake(ch, (HttpResponse) e.getMessage());
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System.err.println("WebSocket Client connected!");
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return;
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}
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if (e.getMessage() instanceof HttpResponse) {
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HttpResponse response = (HttpResponse) e.getMessage();
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throw new IllegalStateException(
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"unexpected response (status=" + response.getStatus() +
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", content=" + response.getContent().toString(CharsetUtil.UTF_8) + ')');
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}
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WebSocketFrame frame = (WebSocketFrame) e.getMessage();
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if (frame instanceof TextWebSocketFrame) {
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TextWebSocketFrame textFrame = (TextWebSocketFrame) frame;
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System.err.println("WebSocket Client received message: " + textFrame.getText());
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} else if (frame instanceof PongWebSocketFrame) {
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System.err.println("WebSocket Client received pong");
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} else if (frame instanceof CloseWebSocketFrame) {
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System.err.println("WebSocket Client received closing");
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ch.close();
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} else if (frame instanceof PingWebSocketFrame) {
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System.err.println("WebSocket Client received ping, response with pong");
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ch.write(new PongWebSocketFrame(frame.getBinaryData()));
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}
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
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e.getCause().printStackTrace();
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e.getChannel().close();
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}
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}
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