[Q] Random SSLHandshakeException

private SSLContext trustCert() throws Exception {
        SSLContext context = null;

        context = SSLContext.getInstance("TLS");

        // Load CAs from an InputStream
        // (could be from a resource or ByteArrayInputStream or ...)
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        InputStream caInput = this.context.getResources().openRawResource(R.raw.cert);
        Certificate ca = cf.generateCertificate(caInput);
        caInput.close();

        // Create a KeyStore containing our trusted CAs
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(null, null);
        keyStore.setCertificateEntry("ca", ca);

        // Create a TrustManager that trusts the CAs in our KeyStore
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(keyStore);

        // Create an SSLContext that uses our TrustManager
        context.init(null, tmf.getTrustManagers(), null);
        return context;
    }

SSLContext sslContext = this.trustCert();
        HttpsURLConnection conn = (HttpsURLConnection) address.openConnection();
        conn.setSSLSocketFactory(sslContext.getSocketFactory());
......
 conn.connect(); //here i get the error