Cannot resolve method 'setDefaultSocketFactory' in 'PoolingHttpClientConnectionManager'

I have to migrate this httpclient 4 code to httpclient 5:

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;


  @Bean(name = "sslRestTemplateBean")
  public RestTemplate sslRestTemplate() throws Exception {
    char[] unlockPhrase = "test".toCharArray();
    SSLContext sslContext = SSLContextBuilder.create()
        .loadKeyMaterial(pkcsKeyStore("/key.p12", unlockPhrase), unlockPhrase)
        .build();
    HttpClient client = HttpClients.custom()
        .setSSLContext(sslContext)
        .build();
    return new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));
  }

  private KeyStore pkcsKeyStore(String file, char... password) throws Exception {
    KeyStore keyStore = KeyStore.getInstance("PKCS12");
    try (InputStream in = this.getClass().getClassLoader().getResourceAsStream(file)) {
      keyStore.load(in, password);
    }
    return keyStore;
  }

  static RestTemplate createSslRestTemplate(SslCertificate sslCertificate) throws Exception {
    char[] password = generateRandomString().toCharArray();
    SSLContext sslContext = SSLContextBuilder.create()
        .loadKeyMaterial(keyStore(sslCertificate, password), password)
        .build();
    HttpClient client = HttpClients.custom()
        .disableAutomaticRetries()
        .setSSLContext(sslContext)
        .build();
    return new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));
  }

I migrated in to this:

import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory;
import org.apache.hc.core5.ssl.SSLContextBuilder;


@Bean(name = "sslRestTemplateBean")
  public RestTemplate sslRestTemplate() throws Exception {
    char[] unlockPhrase = "test".toCharArray();
    SSLContext sslContext = SSLContextBuilder.create()
        .loadKeyMaterial(pkcsKeyStore("/key.p12", unlockPhrase), unlockPhrase)
        .build();

      // Create SSL socket factory
      SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext);

      // Create connection manager with SSL socket factory
      PoolingHttpClientConnectionManager connectionManager =
              new PoolingHttpClientConnectionManager();
      connectionManager.setDefaultSocketFactory(sslSocketFactory);

      // Build HTTP client
      CloseableHttpClient client = HttpClients.custom()
              .setConnectionManager(connectionManager)
              .build();

      return new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));
  }

  private KeyStore pkcsKeyStore(String file, char... password) throws Exception {
    KeyStore keyStore = KeyStore.getInstance("PKCS12");
    try (InputStream in = this.getClass().getClassLoader().getResourceAsStream(file)) {
      keyStore.load(in, password);
    }
    return keyStore;
  }

  static RestTemplate createSslRestTemplate(SslCertificate sslCertificate) throws Exception {
    char[] password = generateRandomString().toCharArray();
    SSLContext sslContext = SSLContextBuilder.create()
        .loadKeyMaterial(keyStore(sslCertificate, password), password)
        .build();

      // Create SSL socket factory
      SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext);

      // Create connection manager with SSL socket factory
      PoolingHttpClientConnectionManager connectionManager =
              new PoolingHttpClientConnectionManager();
      connectionManager.setDefaultSocketFactory(sslSocketFactory);

      // Build HTTP client
      CloseableHttpClient client = HttpClients.custom()
              .disableAutomaticRetries()
              .setConnectionManager(connectionManager)
              .build();

    return new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));
  }

But I get error: Cannot resolve method 'setDefaultSocketFactory' in 'PoolingHttpClientConnectionManager'

Do you know how I can fix this issue and migrate the code properly?

In the latest version, SSLConnectionSocketFactory has been deprecated in favour of DefaultClientTlsStrategy. After creating the SSLContext, use this instead to create the connection manager:

@Bean(name = "sslRestTemplateBean")
public RestTemplate sslRestTemplate() throws Exception {
    char[] unlockPhrase = "test".toCharArray();
    SSLContext sslContext = SSLContextBuilder.create()
            .loadKeyMaterial(pkcsKeyStore("/key.p12", unlockPhrase), unlockPhrase)
            .build();

    // Create connection manager with SSL context
    PoolingHttpClientConnectionManager connectionManager = PoolingHttpClientConnectionManagerBuilder.create()
            .setTlsSocketStrategy(new DefaultClientTlsStrategy(sslContext))
            .build();

    // Build HTTP client
    CloseableHttpClient client = HttpClients.custom()
            .setConnectionManager(connectionManager)
            .build();

    return new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));
}