import java.net.*;
import java.io.*;
import java.util.*;
import java.security.*;
import javax.net.*;
import javax.net.ssl.*;
import com.sun.net.ssl.*;

public class SecureServer extends HTTPServer {
 String KEYSTORE = "certssir";
 char[] KEYSTOREPW = "serverkspw".toCharArray();
 char[] KEYPW = "serverpw".toCharArray();
 boolean requireClientAuthentication;

 public static void main(String args[]){
  SecureServer server = new SecureServer();
  server.run();
 }
 public SecureServer(String name, String version, int port,
boolean requireClientAuthentication) {
  super(name, version, port);
  this.requireClientAuthentication = requireClientAuthentication;
 }
 public SecureServer() {
  this("SecureServer", "1.0", 443, false);
 }
 ServerSocket getServerSocket() throws Exception {
  // Make sure that JSSE is available
  Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
  // A keystore is where keys and certificates are kept
  // Both the keystore and individual private keys should be password protected
  KeyStore keystore = KeyStore.getInstance("JKS");
  keystore.load(new FileInputStream(KEYSTORE), KEYSTOREPW);
  // A KeyManagerFactory is used to create key managers
  KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
  // Initialize the KeyManagerFactory to work with our keystore
  kmf.init(keystore, KEYPW);
  // An SSLContext is an environment for implementing JSSE
  // It is used to create a ServerSocketFactory
  SSLContext sslc = SSLContext.getInstance("SSLv3");
  // Initialize the SSLContext to work with our key managers
  sslc.init(kmf.getKeyManagers(), null, null);
  // Create a ServerSocketFactory from the SSLContext
  ServerSocketFactory ssf = sslc.getServerSocketFactory();
  // Socket to me
  SSLServerSocket serverSocket =
   (SSLServerSocket) ssf.createServerSocket(serverPort);
  // Authenticate the client?
  serverSocket.setNeedClientAuth(requireClientAuthentication);
  // Return a ServerSocket on the desired port (443)
  return serverSocket;
 }
}