/*
* 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.securechat;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.util.concurrent.Executors;
import io.netty.bootstrap.ClientBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.socket.nio.NioClientSocketChannelFactory;
import io.netty.example.telnet.TelnetClient;
/**
* Simple SSL chat client modified from {@link TelnetClient}.
*/
public class SecureChatClient {
private final String host;
private final int port;
public SecureChatClient(String host, int port) {
this.host = host;
this.port = port;
}
public void run() throws IOException {
// Configure the client.
ClientBootstrap bootstrap = new ClientBootstrap(
new NioClientSocketChannelFactory(
Executors.newCachedThreadPool(),
Executors.newCachedThreadPool()));
// Configure the pipeline factory.
bootstrap.setPipelineFactory(new SecureChatClientPipelineFactory());
// Start the connection attempt.
ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
// Wait until the connection attempt succeeds or fails.
Channel channel = future.awaitUninterruptibly().getChannel();
if (!future.isSuccess()) {
future.getCause().printStackTrace();
bootstrap.releaseExternalResources();
return;
}
// Read commands from the stdin.
ChannelFuture lastWriteFuture = null;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
for (;;) {
String line = in.readLine();
if (line == null) {
break;
}
// Sends the received line to the server.
lastWriteFuture = channel.write(line + "\r\n");
// If user typed the 'bye' command, wait until the server closes
// the connection.
if (line.toLowerCase().equals("bye")) {
channel.getCloseFuture().awaitUninterruptibly();
break;
}
}
// Wait until all messages are flushed before closing the channel.
if (lastWriteFuture != null) {
lastWriteFuture.awaitUninterruptibly();
}
// Close the connection. Make sure the close operation ends because
// all I/O operations are asynchronous in Netty.
channel.close().awaitUninterruptibly();
// Shut down all thread pools to exit.
bootstrap.releaseExternalResources();
}
public static void main(String[] args) throws Exception {
// Print usage if no argument is specified.
if (args.length != 2) {
System.err.println(
"Usage: " + SecureChatClient.class.getSimpleName() +
" <host> <port>");
return;
}
// Parse options.
String host = args[0];
int port = Integer.parseInt(args[1]);
new SecureChatClient(host, port).run();
}
}