Re: How do I access the SNI extension in HTTP4?

[Ioannis Mavroukakis]

I finally worked it out. For anyone else who might be interested, this 
is how it needs to be done

 @Override
    public void configureHttpClient(HttpClientBuilder clientBuilder) {
        try {
            SSLContext sslContext = getSSLContext(keyStore, password);
            SSLConnectionSocketFactory sslConnectionSocketFactory = new 
SNISupportSSLConnectionSocketFactory(sslContext, NOOP_HOSTNAME_VERIFIER);
            Registry<ConnectionSocketFactory> 
connectionSocketFactoryRegistry =
                    
RegistryBuilder.<ConnectionSocketFactory>create().register("http", 
PlainConnectionSocketFactory.getSocketFactory())
                                                                     
.register("https", sslConnectionSocketFactory).build();
            HttpClientConnectionManager connectionManager = new 
PoolingHttpClientConnectionManager(connectionSocketFactoryRegistry);
            clientBuilder.setConnectionManager(connectionManager);
            
clientBuilder.setDefaultHeaders(Collections.singleton(SNI_HOST_HEADER));
        } catch (Exception e) {
            throw new RuntimeCamelException(e);
        }
    }
    protected SSLContext getSSLContext(KeyStore keyStore, char[] 
password) throws Exception {
        KeyManagerFactory keyManagerFactory = 
KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
        keyManagerFactory.init(keyStore, password);

        TrustManagerFactory trustManagerFactory = 
TrustManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
        trustManagerFactory.init(keyStore);

        SSLContext sslcontext = SSLContext.getInstance("SSL");
        sslcontext.init(keyManagerFactory.getKeyManagers(), 
trustManagerFactory.getTrustManagers(), new SecureRandom());

        return sslcontext;
    }

    private static final class SNISupportSSLConnectionSocketFactory 
extends SSLConnectionSocketFactory {

        public SNISupportSSLConnectionSocketFactory(SSLContext 
sslContext, HostnameVerifier hostnameVerifier) {
            super(sslContext, hostnameVerifier);
        }

        @Override
        protected void prepareSocket(SSLSocket socket) throws IOException {
            List<SNIServerName> serverNames = 
Collections.singletonList(SNI_HOST_NAME);
            SSLParameters sslParameters = socket.getSSLParameters();
            sslParameters.setServerNames(serverNames);
            socket.setSSLParameters(sslParameters);
            super.prepareSocket(socket);
        }
    }