gistfile1.txt

import okhttp3.OkHttpClient;

import javax.net.ssl.*;
import java.util.function.Supplier;

public class HttpClientSupplier implements Supplier<OkHttpClient> {

    public OkHttpClient get() {
        try {
            TrustManager[] managers = {new SimpleTrustManager()};
            SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, managers, new java.security.SecureRandom());
            SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
            OkHttpClient.Builder builder = new OkHttpClient.Builder();
            builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) managers[0]);
            builder.hostnameVerifier(new SimpleHostnameVerifier());
            return builder.build();
        } catch (Exception e) {
            throw new IllegalStateException(e);
        }
    }

    private static final class SimpleHostnameVerifier implements HostnameVerifier {
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    }

    private static final class SimpleTrustManager implements X509TrustManager {

        @Override
        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
        }

        @Override
        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {
        }

        @Override
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return new java.security.cert.X509Certificate[]{};
        }

    }
}

Code snippet that creates an OkHttpClient that trusts all SSL certificates. Exceedingly useful for testing scenarios and lower environments that have "fake" SSL certificates issued internally.