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SSLClientExample.java
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/*
* Copyright (c) 2010-2020 Nathan Rajlich
*
* 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.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.nio.file.Paths;
import java.security.KeyStore;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManagerFactory;
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;
class WebSocketChatClient extends WebSocketClient {
public WebSocketChatClient(URI serverUri) {
super(serverUri);
}
@Override
public void onOpen(ServerHandshake handshakedata) {
System.out.println("Connected");
}
@Override
public void onMessage(String message) {
System.out.println("got: " + message);
}
@Override
public void onClose(int code, String reason, boolean remote) {
System.out.println("Disconnected");
}
@Override
public void onError(Exception ex) {
ex.printStackTrace();
}
}
public class SSLClientExample {
/*
* Keystore with certificate created like so (in JKS format):
*
*keytool -genkey -keyalg RSA -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 {
WebSocketChatClient chatclient = new WebSocketChatClient(new URI("wss://localhost:8887"));
// load up the key store
String STORETYPE = "JKS";
String KEYSTORE = Paths.get("src", "test", "java", "org", "java_websocket", "keystore.jks")
.toString();
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);
// sslContext.init( null, null, null ); // will use java's default key and trust store which is sufficient unless you deal with self-signed certificates
SSLSocketFactory factory = sslContext
.getSocketFactory();// (SSLSocketFactory) SSLSocketFactory.getDefault();
chatclient.setSocketFactory(factory);
chatclient.connectBlocking();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
while (true) {
String line = reader.readLine();
if (line.equals("close")) {
chatclient.closeBlocking();
} else if (line.equals("open")) {
chatclient.reconnect();
} else {
chatclient.send(line);
}
}
}
}