Not receiving client headers in google cloud function

Question

I am using Google cloud functions, and has deployed and had been using 2nd gen functions with flask applications. I am using Hasura actions to trigger these functions. Recently after I updated and deployed my code, it started showing headers that I passed from Hasura actions as None. All cloud functions other than that which I updated was getting the headers. Has anyone got this issue of not receiving the headers that was sent?

To confirm, I updated one more cloud function and that too started acting the same way. I have logged all the headers that I am receiving in the cloud functions and confirmed that it was not any spelling mistakes or that kind of errors.

I am using python version 3.11 and cloud function 2nd gen.

import json

@functions_framework.http
def main(request):
    try:
        action_secret = request.headers.get("action_secret")

        if action_secret != os.environ.get("action_secret"):
            logging.error("Unauthorized access")
            return json.dumps(
                {"err_msg": "You are not authorized to perform this action"}
            )
    except Exception as e:
        print(e) # I get the error log as action_secret is not in request.headers

Update:

• I had been testing this is in multiple ways and found out that it is the issue of Hasura not sending the headers.

Answer 1

Found out that the error was caused due to an underscore in the hasura action client headers. The variable I used was 'action_secret' and when I modified that into 'actionsecret', the cloud functions started working normally.