Can't access APIC App REST endpoints - URL Challenge Token empty

[kuschauh]

I’m trying to access the app api, as declared in app.json but the validation seems to be failing.

I’m doing a GET call at https://<apic_address>/appcenter/Cisco/StateChangeChecker/proxy.json

and I get the following response :

{"totalCount":"1","imdata":[{"error":{"attributes":{"code":"403","text":"Token was invalid (Error: WebToken validation passed but URL Challenge Token was empty)"}}}]}

For clarity, this is what I’m doing :

client_url = apic_url + "/appcenter/Cisco/StateChangeChecker/proxy.json"
headers = {    'DevCookie': cookie,
    'APIC-challenge': challenge}
response = session.get(client_url, headers=headers, verify=False)
print(response.text)

I get the cookie and challenge from doing a aaaLogin.

aaaLogin is working fine because I can make a call to "https://<apic_address>/api/class/topSystem.json" and I get the expected response.

Am I missing something here?

[kuschauh · Accepted solution]

Still not sure what's wrong with my code making the requests but for anyone else, the problem was that the DevCookie wasn't being set right.