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import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.net.Socket;

import java.nio.channels.ByteChannel;

import java.nio.channels.SocketChannel;

import java.security.KeyStore;

import java.util.List;

import javax.net.ssl.KeyManagerFactory;

import javax.net.ssl.SSLContext;

import javax.net.ssl.SSLEngine;

import javax.net.ssl.TrustManagerFactory;

import org.java_websocket.SSLSocketChannel;

import org.java_websocket.WebSocket;

import org.java_websocket.WebSocketAdapter;

import org.java_websocket.WebSocketImpl;

import org.java_websocket.drafts.Draft;

import org.java_websocket.server.WebSocketServer;

public class SSLExample {

/*

* Keystore with certificate created like so (in JKS format):

*

*keytool -genkey -validity 3650 -keystore "keystore.jks" -storepass "storepassword" -keypass "keypassword" -alias "default" -dname "CN=127.0.0.1, OU=MyOrgUnit, O=MyOrg, L=MyCity, S=MyRegion, C=MyCountry"

*/

public static void main( String[] args ) throws Exception {

WebSocket.DEBUG = true;

ChatServer chatserver = new ChatServer( 8887 );

// load up the key store

String STORETYPE = "JKS";

String KEYSTORE = "keystore.jks";

String STOREPASSWORD = "storepassword";

String KEYPASSWORD = "keypassword";

KeyStore ks = KeyStore.getInstance( STORETYPE );

File kf = new File( KEYSTORE );

ks.load( new FileInputStream( kf ), STOREPASSWORD.toCharArray() );

KeyManagerFactory kmf = KeyManagerFactory.getInstance( "SunX509" );

kmf.init( ks, KEYPASSWORD.toCharArray() );

TrustManagerFactory tmf = TrustManagerFactory.getInstance( "SunX509" );

tmf.init( ks );

SSLContext sslContext = null;

sslContext = SSLContext.getInstance( "TLS" );

sslContext.init( kmf.getKeyManagers(), tmf.getTrustManagers(), null );

chatserver.setWebSocketFactory( new SSLWebSocketServerFactory( sslContext ) );

chatserver.start();

}

}

class SSLWebSocketServerFactory implements WebSocketServer.WebSocketServerFactory {

private SSLContext sslcontext;

SSLWebSocketServerFactory( SSLContext sslContext ) {

this.sslcontext = sslContext;

}

@Override

public ByteChannel wrapChannel( SocketChannel c ) throws IOException {

SSLEngine e = sslcontext.createSSLEngine();

e.setUseClientMode( false );

return new SSLSocketChannel( c, e );

}

@Override

public WebSocketImpl createWebSocket( WebSocketAdapter a, Draft d, Socket c ) {

return new WebSocketImpl( a, d, c );

}

@Override

public WebSocketImpl createWebSocket( WebSocketAdapter a, List<Draft> d, Socket s ) {

return new WebSocketImpl( a, d, s );

}

}