Examples of io.netty.handler.ssl.SslHandler

io.netty.handler.ssl.SslHandler
kipedia.org/wiki/Transport_Layer_Security">SSL · TLS and StartTLS support to a {@link Channel}. Please refer to the "SecureChat" example in the distribution or the web site for the detailed usage.
Beginning the handshake

You must make sure not to write a message while the {@linkplain #handshake() handshake} is in progress unless you arerenegotiating. You will be notified by the {@link ChannelFuture} which isreturned by the {@link #handshake()} method when the handshakeprocess succeeds or fails.
Handshake

If {@link #isIssueHandshake()} is {@code false}(default) you will need to take care of calling {@link #handshake()} by your own. In most situations were {@link SslHandler} is used in 'client mode'you want to issue a handshake once the connection was established. if {@link #setIssueHandshake(boolean)} is set to true you don't need to worry about this as the {@link SslHandler} will take care of it.

Renegotiation

If {@link #isEnableRenegotiation() enableRenegotiation} is {@code true}(default) and the initial handshake has been done successfully, you can call {@link #handshake()} to trigger the renegotiation.
If {@link #isEnableRenegotiation() enableRenegotiation} is {@code false}, an attempt to trigger renegotiation will result in the connection closure.
Please note that TLS renegotiation had a security issue before. If your runtime environment did not fix it, please make sure to disable TLS renegotiation by calling {@link #setEnableRenegotiation(boolean)} with{@code false}. For more information, please refer to the following documents:
Closing the session

To close the SSL session, the {@link #close()} method should becalled to send the {@code close_notify} message to the remote peer. Oneexception is when you close the {@link Channel} - {@link SslHandler}intercepts the close request and send the {@code close_notify} messagebefore the channel closure automatically. Once the SSL session is closed, it is not reusable, and consequently you should create a new {@link SslHandler} with a new {@link SSLEngine} as explained in thefollowing section.
Restarting the session

To restart the SSL session, you must remove the existing closed {@link SslHandler} from the {@link ChannelPipeline}, insert a new {@link SslHandler} with a new {@link SSLEngine} into the pipeline,and start the handshake process as described in the first section.
Implementing StartTLS

StartTLS is the communication pattern that secures the wire in the middle of the plaintext connection. Please note that it is different from SSL · TLS, that secures the wire from the beginning of the connection. Typically, StartTLS is composed of three steps:
1. Client sends a StartTLS request to server.
2. Server sends a StartTLS response to client.
3. Client begins SSL handshake.
If you implement a server, you need to:
1. create a new {@link SslHandler} instance with {@code startTls} flag setto {@code true},
2. insert the {@link SslHandler} to the {@link ChannelPipeline}, and
3. write a StartTLS response.
Please note that you must insert {@link SslHandler} before sendingthe StartTLS response. Otherwise the client can send begin SSL handshake before {@link SslHandler} is inserted to the {@link ChannelPipeline}, causing data corruption.
The client-side implementation is much simpler.
1. Write a StartTLS request,
2. wait for the StartTLS response,
3. create a new {@link SslHandler} instance with {@code startTls} flag setto {@code false},
4. insert the {@link SslHandler} to the {@link ChannelPipeline}, and
5. Initiate SSL handshake by calling {@link SslHandler#handshake()}.
@apiviz.landmark @apiviz.uses io.netty.handler.ssl.SslBufferPool

    try {
      if (this.isTls.compareAndSet(false, true)) {
        SSLEngine engine = this.sslContextBuilder.build().createSSLEngine();
        engine.setNeedClientAuth(false);
        engine.setUseClientMode(false);
        this.handler = new SslHandler(engine);
        this.prepareTls.compareAndSet(false, true);
      }
      return true;
    } catch (Exception e) {
      log.error(e.toString());

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        final ChannelPipeline pipeline = channel.pipeline();


        final SSLEngine sslEngine = feedbackConnection.sslContext.createSSLEngine();
        sslEngine.setUseClientMode(true);


        pipeline.addLast("ssl", new SslHandler(sslEngine));
        pipeline.addLast("readTimeoutHandler", new ReadTimeoutHandler(feedbackConnection.configuration.getReadTimeout()));
        pipeline.addLast("decoder", new ExpiredTokenDecoder());
        pipeline.addLast("handler", new FeedbackClientHandler(feedbackConnection));
      }
    });


    this.connectFuture = bootstrap.connect(this.environment.getFeedbackHost(), this.environment.getFeedbackPort());
    this.connectFuture.addListener(new GenericFutureListener<ChannelFuture>() {


      @Override
      public void operationComplete(final ChannelFuture connectFuture) {


        if (connectFuture.isSuccess()) {
          log.debug("{} connected; waiting for TLS handshake.", feedbackConnection.name);


          final SslHandler sslHandler = connectFuture.channel().pipeline().get(SslHandler.class);


          try {
            sslHandler.handshakeFuture().addListener(new GenericFutureListener<Future<Channel>>() {


              @Override
              public void operationComplete(final Future<Channel> handshakeFuture) {
                if (handshakeFuture.isSuccess()) {
                  log.debug("{} successfully completed TLS handshake.", feedbackConnection.name);

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    final FeedbackServiceConnection feedbackConnection = this;


    return new Runnable() {
      @Override
      public void run() {
        final SslHandler sslHandler = feedbackConnection.connectFuture.channel().pipeline().get(SslHandler.class);


        if (feedbackConnection.connectFuture.isCancellable()) {
          feedbackConnection.connectFuture.cancel(true);
        } else if (sslHandler != null && sslHandler.handshakeFuture().isCancellable()) {
          sslHandler.handshakeFuture().cancel(true);
        } else {
          feedbackConnection.connectFuture.channel().close();
        }
      }
    };

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    bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {


      @Override
      protected void initChannel(final SocketChannel channel) throws Exception {
        channel.pipeline().addLast("ssl", new SslHandler(SSLTestUtil.createSSLEngineForMockServer()));
        channel.pipeline().addLast("encoder", new ApnsErrorEncoder());
        channel.pipeline().addLast("decoder", new ApnsPushNotificationDecoder());
        channel.pipeline().addLast("handler", new MockApnsServerHandler(server));
      }
    });

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        final ChannelPipeline pipeline = channel.pipeline();


        final SSLEngine sslEngine = apnsConnection.sslContext.createSSLEngine();
        sslEngine.setUseClientMode(true);


        pipeline.addLast("ssl", new SslHandler(sslEngine));
        pipeline.addLast("decoder", new RejectedNotificationDecoder());
        pipeline.addLast("encoder", new ApnsPushNotificationEncoder());
        pipeline.addLast(ApnsConnection.PIPELINE_MAIN_HANDLER, new ApnsConnectionHandler(apnsConnection));
      }
    });


    log.debug("{} beginning connection process.", apnsConnection.name);
    this.connectFuture = bootstrap.connect(this.environment.getApnsGatewayHost(), this.environment.getApnsGatewayPort());
    this.connectFuture.addListener(new GenericFutureListener<ChannelFuture>() {


      @Override
      public void operationComplete(final ChannelFuture connectFuture) {
        if (connectFuture.isSuccess()) {
          log.debug("{} connected; waiting for TLS handshake.", apnsConnection.name);


          final SslHandler sslHandler = connectFuture.channel().pipeline().get(SslHandler.class);


          try {
            sslHandler.handshakeFuture().addListener(new GenericFutureListener<Future<Channel>>() {


              @Override
              public void operationComplete(final Future<Channel> handshakeFuture) {
                if (handshakeFuture.isSuccess()) {
                  log.debug("{} successfully completed TLS handshake.", apnsConnection.name);

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    final ApnsConnection<T> apnsConnection = this;


    return new Runnable() {
      @Override
      public void run() {
        final SslHandler sslHandler = apnsConnection.connectFuture.channel().pipeline().get(SslHandler.class);


        if (apnsConnection.connectFuture.isCancellable()) {
          apnsConnection.connectFuture.cancel(true);
        } else if (sslHandler != null && sslHandler.handshakeFuture().isCancellable()) {
          sslHandler.handshakeFuture().cancel(true);
        } else {
          apnsConnection.connectFuture.channel().close();
        }
      }
    };

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    final MockFeedbackServer server = this;
    bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {


      @Override
      protected void initChannel(final SocketChannel channel) throws Exception {
        channel.pipeline().addLast("ssl", new SslHandler(SSLTestUtil.createSSLEngineForMockServer()));
        channel.pipeline().addLast("encoder", new ExpiredTokenEncoder());
        channel.pipeline().addLast("handler", new MockFeedbackServerHandler(server));
      }
    });

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    @Override
    protected void initChannel(Channel ch) throws Exception {
        // create a new pipeline
        ChannelPipeline pipeline = ch.pipeline();
        
        SslHandler sslHandler = configureServerSSLOnDemand();
        if (sslHandler != null) {
            //TODO must close on SSL exception
            // sslHandler.setCloseOnSSLException(true);
            LOG.debug("Server SSL handler configured and added as an interceptor against the ChannelPipeline: {}", sslHandler);
            pipeline.addLast("ssl", sslHandler);

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            engine.setNeedClientAuth(consumer.getConfiguration().isNeedClientAuth());
            if (consumer.getConfiguration().getSslContextParameters() == null) {
                // just set the enabledProtocols if the SslContextParameter doesn't set
                engine.setEnabledProtocols(consumer.getConfiguration().getEnabledProtocols().split(","));
            }
            return new SslHandler(engine);
        }


        return null;
    }

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    @Override
    protected void initChannel(Channel ch) throws Exception {
        // create a new pipeline
        ChannelPipeline pipeline = ch.pipeline();


        SslHandler sslHandler = configureServerSSLOnDemand();
        if (sslHandler != null) {
            LOG.debug("Server SSL handler configured and added as an interceptor against the ChannelPipeline: {}", sslHandler);
            pipeline.addLast("ssl", sslHandler);
        }

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Related Classes of io.netty.handler.ssl.SslHandler

com.corundumstudio.socketio.SocketIOChannelInitializer

com.relayrides.pushy.apns.ApnsConnection

com.relayrides.pushy.apns.FeedbackServiceConnection

io.netty.buffer.ByteBuf

io.netty.buffer.ByteBufAllocator

io.netty.buffer.ChannelBuffer

io.netty.channel.Channel

io.netty.channel.ChannelFuture

io.netty.channel.ChannelFutureListener

io.netty.channel.ChannelHandlerContext

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Examples of io.netty.handler.ssl.SslHandler

Beginning the handshake

Handshake

Renegotiation

Closing the session

Restarting the session

Implementing StartTLS

Related Classes of io.netty.handler.ssl.SslHandler