Register ArcGIS Server token with IdentityManager

deleted-user-RAnWn8DDSd1P

We have a protected ArcGIS Online webmap which references some of our protected ArcGIS Server services on-premise.  I'm trying to bypass both challenges for credentials with IdentityManager.  Server-side I fetch an oauth2 token from ArcGIS Online with client_id and client_secret and a token from our on-premise ArcGIS Server with username and password.  I've been successful using the following to register the oauth2 token:

var agolToken = {

   'server': 'http://www.arcgis.com/sharing/rest',

   'userId': 'user',

   'token': '<fetched ArcGIS Online oauth2 access_token>',

   'ssl': true,

   'expires': <fetched ArcGIS Online oauth2 expires_in>

};

esriIdentityManager.registerToken(agolToken);

esriArcgisUtils.createMap('<protected ArcGIS Online webmap id>',...

How do I register the ArcGIS Server token with IdentityManager such that every subsequent request, tile or otherwise, will append the token?

I was able to interrupt some requests with esri.setRequestPreCallback and add the token to ioArgs.url, but the tile requests do not seem to filter through there. 

JeffPace1

we do this with tokens

var idObject ={};
                                idObject.serverInfos= [serverInfo];
                                var credentials={};
                                credentials.userId = "util";
                                credentials.server = window.location.protocol+'//'+window.location.hostname+'/arcgis03';
                                credentials.token = tokenInfo.token;
                                credentials.expires = expirationTime;
                                credentials.ssl = false;
                                credentials.scope = "server";
                                credentials.validity = 720;
                                credentials.creationTime = creationTime;
                                
                                
                                idObject.credentials = [credentials];
                               //credential object is correct
                                esri.id.initialize(idObject);
                                esri.id.tokenValidity=720;