OkHttp + self signed cert

OkHttpTest.java

package com.aliexpress.international.http.client;

import okhttp3.*;
import org.junit.Test;

import javax.net.ssl.*;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.util.concurrent.TimeUnit;

public class HttpClientTest {
    private static final String HOST = "";
  
    @Test
    public void okHttpTest() throws Exception {
            SSLContext sslContext;
            TrustManager[] trustManagers;
            try {
                KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
                keyStore.load(null, null);
                InputStream certInputStream = getClass().getResourceAsStream("/my-server.crt");
                BufferedInputStream bis = new BufferedInputStream(certInputStream);
                CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
                while (bis.available() > 0) {
                    Certificate cert = certificateFactory.generateCertificate(bis);
                    keyStore.setCertificateEntry(, cert);
                }
                TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
                trustManagerFactory.init(keyStore);
                trustManagers = trustManagerFactory.getTrustManagers();
                sslContext = SSLContext.getInstance("TLS");
                sslContext.init(null, trustManagers, null);
            } catch (Exception e) {
                e.printStackTrace();
                return;
            }

            OkHttpClient client = new OkHttpClient.Builder()
                    .sslSocketFactory(sslContext.getSocketFactory(), (X509TrustManager) trustManagers[0])
                    .hostnameVerifier((s, sslSession) ->
                        HOST.equals(s)
                    )
                    .readTimeout(5, TimeUnit.SECUNDS)
                    .build();




            Request request = new Request.Builder()
                    .url(PROTOCOL+ "://" + HOST + ":" + PATH)
                    .post(RequestBody.create(MediaType.parse("application/json"), "{ \"data\": \"value\"} "))
                    .build();

            Response response = client.newCall(request).execute();

            System.out.println(response.body().string());


    }
}