/*
* Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
*
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* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
import java.io.*;
import java.net.*;
import java.nio.channels.*;
import java.security.*;
import javax.net.ssl.*;
/**
* The main server base class.
* <P>
* This class is responsible for setting up most of the server state
* before the actual server subclasses take over.
*
* @author Mark Reinhold
* @author Brad R. Wetmore
*/
public abstract class Server {
ServerSocketChannel ssc;
SSLContext sslContext = null;
static private int PORT = 8000;
static private int BACKLOG = 1024;
static private boolean SECURE = false;
Server(int port, int backlog,
boolean secure) throws Exception {
if (secure) {
createSSLContext();
}
ssc = ServerSocketChannel.open();
ssc.socket().setReuseAddress(true);
ssc.socket().bind(new InetSocketAddress(port), backlog);
}
/*
* If this is a secure server, we now setup the SSLContext we'll
* use for creating the SSLEngines throughout the lifetime of
* this process.
*/
private void createSSLContext() throws Exception {
char[] passphrase = "passphrase".toCharArray();
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("testkeys"), passphrase);
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, passphrase);
TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
tmf.init(ks);
sslContext = SSLContext.getInstance("TLS");
sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
}
abstract void runServer() throws Exception;
static private void usage() {
System.out.println(
"Usage: Server <type> [options]\n"
+ " type:\n"
+ " B1 Blocking/Single-threaded Server\n"
+ " BN Blocking/Multi-threaded Server\n"
+ " BP Blocking/Pooled-Thread Server\n"
+ " N1 Nonblocking/Single-threaded Server\n"
+ " N2 Nonblocking/Dual-threaded Server\n"
+ "\n"
+ " options:\n"
+ " -port port port number\n"
+ " default: " + PORT + "\n"
+ " -backlog backlog backlog\n"
+ " default: " + BACKLOG + "\n"
+ " -secure encrypt with SSL/TLS");
System.exit(1);
}
/*
* Parse the arguments, decide what type of server to run,
* see if there are any defaults to change.
*/
static private Server createServer(String args[]) throws Exception {
if (args.length < 1) {
usage();
}
int port = PORT;
int backlog = BACKLOG;
boolean secure = SECURE;
for (int i = 1; i < args.length; i++) {
if (args[i].equals("-port")) {
checkArgs(i, args.length);
port = Integer.valueOf(args[++i]);
} else if (args[i].equals("-backlog")) {
checkArgs(i, args.length);
backlog = Integer.valueOf(args[++i]);
} else if (args[i].equals("-secure")) {
secure = true;
} else {
usage();
}
}
Server server = null;
if (args[0].equals("B1")) {
server = new B1(port, backlog, secure);
} else if (args[0].equals("BN")) {
server = new BN(port, backlog, secure);
} else if (args[0].equals("BP")) {
server = new BP(port, backlog, secure);
} else if (args[0].equals("N1")) {
server = new N1(port, backlog, secure);
} else if (args[0].equals("N2")) {
server = new N2(port, backlog, secure);
}
return server;
}
static private void checkArgs(int i, int len) {
if ((i + 1) >= len) {
usage();
}
}
static public void main(String args[]) throws Exception {
Server server = createServer(args);
if (server == null) {
usage();
}
System.out.println("Server started.");
server.runServer();
}
}