This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 77%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
I am getting 504 error when the JWT token is expired. When I debug the problem I found that the error is not coming from API, it is just coming from proxy server(Angular service worker).
Is there a way to refresh the Jwt token with angular service worker?
If I don't use Angular service worker, token is refreshed and I am not getting 504 error.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
it depend on how the JWT token is supplied.
if a username & password api call, it can renew if it has both.
if you are using oauth, then your service could store a refresh token, which can be used via an api call to get a new token (though refresh tokens eventually expire). if refresh token expires or not supported, then the service worker can not get a new token as it requires a UI and web flow.