Get OAuth Access Token in Server Side Script

[Andrew81]

I have a successfully working Outbound REST Message configured with an OAuth2 Application Registered.  This is a normal Azure AD OAuth Application, and i am using Authorization Code flow..  This has all been done using the UI.  I can click (manually) Get OAuth Token and get an OAuth token.  I can then write a Widget with var r = new sn_ws.RESTMessageV2('OAuthAppName', 'MethodName');

This all works wonderfully well etc, my Widgets all work, i can call the API and pull the data back into ServiceNow.

After an hour, my token expires and my Widgets stop working.  This is expected, however, I had assumed that calling  sn_ws.RESTMessageV2() in my Widget server side code would automatically handle all of the authentication again, instead of an administrator manually clicking on "Get OAuth Token" again.

I feel like i have read every possible blog/forum article addressing this issue, but unfortunately, I haven't been able to work out how to re-authenticate whenever someone uses my widget.

Do i really have to write my own oauthclient() code to request authorization and exchange that for a token, when that functionality is already written and hidden behind that "Get OAuth Token" button.

How do i automate this please?

[Vasantharajan N · Accepted solution]

Please refer to the link below where your issue is already addressed

https://community.servicenow.com/community?id=community_question&sys_id=5b544769dbd8dbc01dcaf3231f961937

[Andrew81]

For completeness, what i had to do to resolve this issue was add the openid and offline_access scopes to my oath profile.  Without theses scopes, i didn't have a refresh token, and so of course, there was nothing to "refresh" with.

Once the offline_access scope was added, the app registration+RestMessage services handle the refreshing automatically, and i don't have to do anything in code/script.

[Alex153]

Hi @Andrew81 
Can you please share where and how you added openid and offline_access scopes?
Thanks.

[Manikantahere]

can you guide use how you did that?