/*
* 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.
*/
//The MIT License
//
//Copyright (c) 2009 Carl Bystršm
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in
//all copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//THE SOFTWARE.
package io.netty.example.http.websocketx.client;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.HashMap;
import java.util.concurrent.Executors;
import io.netty.bootstrap.ClientBootstrap;
import io.netty.buffer.ChannelBuffers;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelPipelineFactory;
import io.netty.channel.Channels;
import io.netty.channel.socket.nio.NioClientSocketChannelFactory;
import io.netty.handler.codec.http.HttpRequestEncoder;
import io.netty.handler.codec.http.HttpResponseDecoder;
import io.netty.handler.codec.http.websocketx.CloseWebSocketFrame;
import io.netty.handler.codec.http.websocketx.PingWebSocketFrame;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker;
import io.netty.handler.codec.http.websocketx.WebSocketClientHandshakerFactory;
import io.netty.handler.codec.http.websocketx.WebSocketVersion;
public class WebSocketClient {
private final URI uri;
public WebSocketClient(URI uri) {
this.uri = uri;
}
public void run() throws Exception {
ClientBootstrap bootstrap =
new ClientBootstrap(
new NioClientSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
Channel ch = null;
try {
String protocol = uri.getScheme();
if (!protocol.equals("ws")) {
throw new IllegalArgumentException("Unsupported protocol: " + protocol);
}
HashMap<String, String> customHeaders = new HashMap<String, String>();
customHeaders.put("MyHeader", "MyValue");
// Connect with V13 (RFC 6455). You can change it to V08 or V00.
// If you change it to V00, ping is not supported and remember to change
// HttpResponseDecoder to WebSocketHttpResponseDecoder in the pipeline.
final WebSocketClientHandshaker handshaker =
new WebSocketClientHandshakerFactory().newHandshaker(
uri, WebSocketVersion.V13, null, false, customHeaders);
bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
public ChannelPipeline getPipeline() throws Exception {
ChannelPipeline pipeline = Channels.pipeline();
// If you wish to support HyBi V00, you need to use
// WebSocketHttpResponseDecoder instead for
// HttpResponseDecoder.
pipeline.addLast("decoder", new HttpResponseDecoder());
pipeline.addLast("encoder", new HttpRequestEncoder());
pipeline.addLast("ws-handler", new WebSocketClientHandler(handshaker));
return pipeline;
}
});
// Connect
System.out.println("WebSocket Client connecting");
ChannelFuture future =
bootstrap.connect(
new InetSocketAddress(uri.getHost(), uri.getPort()));
future.awaitUninterruptibly().rethrowIfFailed();
ch = future.getChannel();
handshaker.handshake(ch).awaitUninterruptibly().rethrowIfFailed();
// Send 10 messages and wait for responses
System.out.println("WebSocket Client sending message");
for (int i = 0; i < 10; i++) {
ch.write(new TextWebSocketFrame("Message #" + i));
}
// Ping
System.out.println("WebSocket Client sending ping");
ch.write(new PingWebSocketFrame(ChannelBuffers.copiedBuffer(new byte[]{1, 2, 3, 4, 5, 6})));
// Close
System.out.println("WebSocket Client sending close");
ch.write(new CloseWebSocketFrame());
// WebSocketClientHandler will close the connection when the server
// responds to the CloseWebSocketFrame.
ch.getCloseFuture().awaitUninterruptibly();
} finally {
if (ch != null) {
ch.close();
}
bootstrap.releaseExternalResources();
}
}
public static void main(String[] args) throws Exception {
URI uri;
if (args.length > 0) {
uri = new URI(args[0]);
} else {
uri = new URI("ws://localhost:8080/websocket");
}
new WebSocketClient(uri).run();
}
}