Android Question WebView, Android 4.4.2 and Https

lagore

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I am using a WebView to access a secure site "https://portal.aerlingus.com" which redirects to a NetScaler login site to log into a company site, on Android 6.0 this works perfectly but on 4.4.2 and below it just comes up with "Web page not available" there is no redirection no errors etc?
Edward
 
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lagore

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Unfortunately I am away from my system until Wednesday but I have had issues using OkHttpUtils2 on older phones as posted on another thread "https://www.b4x.com/android/forum/t...ttputils2-android-versions.79992/#post-506545" I do think it is an SSL issue when I use the browser on a 4.4.2 android phone it has the same problem in not showing the site and reporting "unable to establish a secure connection" . I did run ssllab on the website and it indicated that android 4.4.2 should be ok?
Edward
 
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lagore

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Longtime User
Having some more reading and testing the protocol required by the server site is TLS v1.2 but this protocol is supported but not default on android 16+ <= API <= 21 so when the sslSocket is created it needs to force TLS v1.2 with something like :
B4X: 
private Socket patch(Socket s) {
        if (s instanceof SSLSocket) {
            ((SSLSocket) s).setEnabledProtocols("TLSv1.2");
        }
        return s;
    }
There is a thread which has come up with a java solution, will I have to create my own version of OkHttp using their methods or is there a simpler way of modifying the stock OKHttp to do this?
Edward
 
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