/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
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   *
   */
  package org.apache.hc.client5.http.examples;
  
  import javax.net.ssl.SSLPeerUnverifiedException;
  import javax.net.ssl.SSLSession;
  
  import org.apache.hc.client5.http.classic.methods.HttpGet;
  import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
  import org.apache.hc.client5.http.impl.classic.HttpClients;
  import org.apache.hc.client5.http.protocol.HttpClientContext;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.io.entity.EntityUtils;
  import org.apache.hc.core5.http.message.StatusLine;
  
  /**
   * This example demonstrates how to use SNI to send requests to a virtual HTTPS
   * endpoint using the classic I/O.
   */
  public class ClientSNI {
  
      public final static void main(final String[] args) throws Exception {
          try (CloseableHttpClient httpclient = HttpClients.createSystem()) {
  
              final HttpHost target = new HttpHost("https", "www.google.com");
              final HttpGet httpget = new HttpGet("https://www.google.ch/");
  
              System.out.println("Executing request " + httpget.getMethod() + " " + httpget.getUri());
  
              final HttpClientContext clientContext = HttpClientContext.create();
              httpclient.execute(target, httpget, clientContext, response -> {
                  System.out.println("----------------------------------------");
                  System.out.println(httpget + "->" + new StatusLine(response));
                  EntityUtils.consume(response.getEntity());
                  final SSLSession sslSession = clientContext.getSSLSession();
                  if (sslSession != null) {
                      try {
                          System.out.println("Peer: " + sslSession.getPeerPrincipal());
                          System.out.println("TLS protocol: " + sslSession.getProtocol());
                          System.out.println("TLS cipher suite: " + sslSession.getCipherSuite());
                      } catch (final SSLPeerUnverifiedException ignore) {
                      }
                  }
                  return null;
              });
          }
      }
  
  }