Android javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException ТОЛЬКО на Verizon

Question

Я получаю "javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: доверенный якорь для пути сертификации не найден". исключение для моего приложения Android ТОЛЬКО на беспроводных устройствах Verizon по сотовой связи. Все устройства через WiFi, а также соединения 3G/4G через сети AT&T, T-Mobile и Sprint работают нормально. Любые идеи о том, что отличается от VZW или как обойти это? Код следует за исключением. Спасибо!

08-05 00:04:27.904: W/System.err(7752): javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
08-05 00:04:27.914: W/System.err(7752):     at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:409)
08-05 00:04:27.914: W/System.err(7752):     at com.android.okhttp.Connection.upgradeToTls(Connection.java:146)
08-05 00:04:27.924: W/System.err(7752):     at com.android.okhttp.Connection.connect(Connection.java:107)
08-05 00:04:27.924: W/System.err(7752):     at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)
08-05 00:04:27.924: W/System.err(7752):     at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
08-05 00:04:27.934: W/System.err(7752):     at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
08-05 00:04:27.934: W/System.err(7752):     at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
08-05 00:04:27.934: W/System.err(7752):     at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:89)
08-05 00:04:27.944: W/System.err(7752):     at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
08-05 00:04:27.944: W/System.err(7752):     at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:254)
08-05 00:04:27.954: W/System.err(7752):     at com.spt4u.dnstest.MainActivity.DoDNSTest(MainActivity.java:123)
08-05 00:04:27.954: W/System.err(7752):     at com.spt4u.dnstest.MainActivity$1$1.run(MainActivity.java:46)
08-05 00:04:27.954: W/System.err(7752):     at java.lang.Thread.run(Thread.java:841)
08-05 00:04:27.954: W/System.err(7752): Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
08-05 00:04:27.964: W/System.err(7752):     at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:282)
08-05 00:04:27.964: W/System.err(7752):     at com.android.org.conscrypt.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:202)
08-05 00:04:27.964: W/System.err(7752):     at com.android.org.conscrypt.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:611)
08-05 00:04:27.964: W/System.err(7752):     at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
08-05 00:04:27.964: W/System.err(7752):     at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:405)
08-05 00:04:27.964: W/System.err(7752):     ... 12 more
08-05 00:04:27.964: W/System.err(7752): Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
08-05 00:04:27.964: W/System.err(7752):     ... 17 more
08-05 00:04:59.315: W/ActivityThread(8163): Application com.spt4u.dnstest is waiting for the debugger on port 8100...


public void DoDNSTest()
{

    URL u;
    int readCharacters = 0;
    String retVal = "";
    char[] buffer = new char[4096];
    String postData= "_method=POST&data[username]=blah&data[password]=pass&data[device_uuid]=8675309";

    try {
        u = new URL("https://myurl.com/login");
        HttpsURLConnection htc = (HttpsURLConnection) u.openConnection();
        htc.setUseCaches(false);
        htc.setDoInput(true);
        htc.setDoOutput(true);
        htc.setRequestMethod("POST");
        htc.setRequestProperty("User-Agent", "IntelliVan");
        htc.setRequestProperty("Connection","close");
        htc.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");


        OutputStreamWriter wr = new OutputStreamWriter(htc.getOutputStream());
        wr.write(postData);
        wr.flush();

        BufferedReader rd = new BufferedReader(new InputStreamReader(htc.getInputStream()));
        while(readCharacters>-1)
        {
            readCharacters = rd.read(buffer);
            if(readCharacters>0)
            {
                char[] temp = new char[readCharacters];
                System.arraycopy(buffer, 0, temp, 0, readCharacters);
                retVal+= new String(temp);
            }
        }
        rd.close();
    }
    catch (MalformedURLException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }       
}