Automatic OAuth 2.0 access token refresh not working

OK I fixed it by my own using a groovy script that executes before the REST request. This is not fixing the original problem that automatic access token refresh is not working, but ok. Learned a little more abour bearer token request and handling 🙂

import wslite.rest.RESTClient
import groovy.json.JsonSlurper

def url = "https://xxx/api/oauth/token"
def c_id = "yyy"
def c_secret = "zzz"

def client = new RESTClient(url)
def response = client.post() {
	type "application/x-www-form-urlencoded"
	urlenc grant_type:"client_credentials", client_id:c_id, client_secret:c_secret
}
log.info response.statusCode + " - " + response.statusMessage

def slurper = new JsonSlurper()
def json = slurper.parseText(response.getContentAsString())
log.info json.access_token

return "Bearer " + json.access_token