testHostVerifier

import sun.net.www.protocol.https.HttpsURLConnectionImpl;

import javax.net.ssl.*;
import java.net.HttpURLConnection;
import java.security.Principal;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.security.SecureRandom;
import java.util.Base64;
import java.net.URL;

/**
 * Hello world!
 *
 */
public class App 
{
    private static String https_url = "https://abc.com/...";
    private static String username = "demo";
    private static String password = "tavmDnAc4msb";

    private static void makeSSLCall(final String URL) throws Exception {
        try {
            SSLContext sslContext = SSLContext.getInstance("SSL");

            // set up a TrustManager that trusts everything
            sslContext.init(null, new TrustManager[] { new X509TrustManager() {
                public X509Certificate[] getAcceptedIssuers() {
                    System.out.println("getAcceptedIssuers =============");
                    return null;
                }

                public void checkClientTrusted(X509Certificate[] certs,
                                               String authType) {
                    System.out.println("checkClientTrusted =============");
                }

                public void checkServerTrusted(X509Certificate[] certs,
                                               String authType) {
                    System.out.println("checkServerTrusted =============");
                }
            } }, new SecureRandom());


            HttpsURLConnection.setDefaultSSLSocketFactory(
                    sslContext.getSocketFactory());

            HostnameVerifier hv = new HostnameVerifier() {
                public boolean verify(String s, SSLSession sslSession) {
                    System.out.println("hostnameVerifier =============");
                    return true;
                }
            };

            System.out.println("hv:" + hv);

            HttpsURLConnection.setDefaultHostnameVerifier(hv);

            URL url = new URL(URL);
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setHostnameVerifier(hv);
            System.out.println("hv:" + conn.getHostnameVerifier());
            String encoded = Base64.getEncoder().encodeToString((username+":"+password).getBytes(StandardCharsets.UTF_8));  //Java 8
            conn.setRequestProperty("Authorization", "Basic "+encoded);
            BufferedReader reader =
                    new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println("responseCode-->"+line+" for mailerURL : "+URL);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main( String[] args ) {
        try {
            makeSSLCall(https_url);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}