package com.demo.hub.demo;

import javax.net.ssl.SSLServerSocketFactory;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class Main {

    public static void main(String[] args) throws MalformedURLException {
        String requestJSONBodyStr = &#34;{\n&#34; +
                &#34;    \&#34;merchantIdentifier\&#34;: \&#34;replace your code\&#34;,\n&#34; +
                &#34;    \&#34;displayName\&#34;: \&#34;replace your code\&#34;,\n&#34; +
                &#34;    \&#34;initiative\&#34;: \&#34;web\&#34;,\n&#34; +
                &#34;    \&#34;initiativeContext\&#34;: \&#34;replace your code\&#34;\n&#34; +
                &#34;}&#34;;

        String urlStr = &#34;https://apple-pay-gateway.apple.com/paymentservices/startSession&#34;;
        System.out.println(&#34;Request url: &#34; + urlStr);
        System.out.println(&#34;Request body: &#34; + requestJSONBodyStr);

        System.setProperty(&#34;https.protocols&#34;, &#34;TLSv1.2&#34;);
        String httpsProtocols = System.getProperty(&#34;https.protocols&#34;);
        System.out.println(&#34;httpsProtocols &#34; + httpsProtocols);

        printCiphers();

        URL url = new URL(urlStr);
        try {
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod(&#34;POST&#34;);
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setUseCaches(false);
            connection.setConnectTimeout(1000);
            connection.setReadTimeout(3000);
            connection.setRequestProperty(&#34;Content-Type&#34;, &#34;application/json;charset=utf-8&#34;);
            connection.connect();

            final BufferedWriter requestOut = new BufferedWriter(new OutputStreamWriter(connection.getOutputStream(), StandardCharsets.UTF_8));
            requestOut.write(requestJSONBodyStr);
            requestOut.flush();

            final BufferedReader responseReader = new BufferedReader(new InputStreamReader(connection.getInputStream(), StandardCharsets.UTF_8));
            StringBuilder responseBody = new StringBuilder();
            String line = &#34;&#34;;
            while ((line = responseReader.readLine()) != null) {
                responseBody.append(line);
            }

            int httpStatusCode = connection.getResponseCode();
            if (httpStatusCode == 200) {
                System.out.println(&#34;Response body: &#34; + responseBody);
            } else {
                System.err.println(&#34;Response error: &#34; + httpStatusCode + &#34;, body: &#34; + responseBody);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    private static void printCiphers() {
        SSLServerSocketFactory ssf = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
        String supportedCipherSuites = String.join(&#34;,&#34;, ssf.getSupportedCipherSuites());
        String defaultCipherSuites = String.join(&#34;,&#34;, ssf.getDefaultCipherSuites());

        System.out.println(&#34;defaultCipherSuites: &#34; + defaultCipherSuites);
        System.out.println(&#34;supportedCipherSuites: &#34; + supportedCipherSuites);
    }

}