How to process Twilio 'Programmable video' JWT access token correctly? (Android)

Question

I trying to embed Twilio's Programmable video into my Android app.

I've created an endpoint on my java server, which uses "com.twilio.sdk" % "twilio-java-sdk" % "6.3.0" library for obtaining access tokens with following code:

private static final String ACCOUNT_SID = "ACxxxxx";
private static final String API_KEY_SID = "SKxxxxx";
private static final String API_KEY_SECRET = "aa8xxxxx";
private static final String TWILIO_CONFIGURATION_SID = "VSxxxxx";

public Result token(String identity) {
    return ok(Json.toJson(new ResponseMessage(createToken(identity))));
}

public static String createToken(String identity) {
    ConversationsGrant grant = new ConversationsGrant();
    grant.configurationProfileSid = TWILIO_CONFIGURATION_SID;

    AccessToken token = new AccessToken.Builder(
            ACCOUNT_SID,
            API_KEY_SID,
            API_KEY_SECRET
    ).identity(identity).grant(grant).ttl(86400).build();

    return token.toJWT();
}

Then I receiving a token in my Android app from this endpoint, and instantiating AccessManager with this token

new AccessManager(MyActivity.this,
            videoToken,
            new AccessManager.Listener() {
        @Override
        public void onTokenExpired(AccessManager twilioAccessManager) {
            //Expired :(
        }

        @Override
        public void onTokenUpdated(AccessManager twilioAccessManager) {
            //Updated!
        });

, and trying to create TwilioConversationsClient with following code in the accessManagerListener:

TwilioConversationsClient.create(twilioAccessManager, new TwilioConversationsClient.Listener() {
        @Override
        public void onStartListeningForInvites(TwilioConversationsClient conversationsClient) {
            Log.d(TAG, "TwilioConversationsClient.Listener: onStartListeningForInvites");
        }

        @Override
        public void onStopListeningForInvites(TwilioConversationsClient conversationsClient) {
            Log.d(TAG, "TwilioConversationsClient.Listener: onStopListeningForInvites");
        }

        @Override
        public void onFailedToStartListening(TwilioConversationsClient conversationsClientd,
                                             TwilioConversationsException e) {
            Log.d(TAG, "TwilioConversationsClient.Listener: onFailedToStartListening");
        });

Evetytime I getting into 'onFailedToStartListening' callback with error message:

com.twilio.conversations.TwilioConversationsException: code:103, message: 31201 Authentication failed

The strangest thing, is if I copy new token from '//Updated!' block (see above), and paste it into code manually in

new AccessManager(MyActivity.this,
            videoToken

instead videoToken, that I receiving from server just a seconds before, everything works smooth, and I getting into onStartListeningForInvites callback. Maybe something wrong with server encoding or encoding when I trying to read an answer? I spend a few days, but still can't resolve this problem.

And even more, I tried to replace my java server code with PHP, and got the same result! If I generating a token in the console (terminal), and then pasting it into Android app code, everything works good. But if I trying to get a token from remote server, I getting the same error with 'code:103, message: 31201 Authentication failed'.

I also using integrations with Twilio Voice, and Ip-Messaging, and I've never had problems with tokens.

If we will decode JWT tokens (one from server, and another generated locally), we will see than only difference is time of creation and expiration time:

Any suggestions appreciated!

Arkady Arkady · Accepted Answer · 2016-10-20T14:28:19

Finally guys from Twilio gave us a workaround. Ttl 86400 with some reason couldn't be correctly processed by Twilio servers. Ttl with half of this lifetime works fine.

How to process Twilio 'Programmable video' JWT access token correctly? (Android)

1 Answers