app.py

import base64
import json
import os
import gradio as gr
import spaces
from spaces.zero.client import _get_token
from gradio.context import LocalContext
import logging

#############################
os.environ.setdefault('GRADIO_ANALYTICS_ENABLED', 'False')
os.environ.setdefault('HF_HUB_DISABLE_TELEMETRY', '1')

logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger(__name__)
#############################

def local_context_greet(name):
    request = LocalContext.request.get()
    print(f"{request.headers=}")
    return "Hello " + name + "!!"

def req_header_greet(name, req: gr.Request):
    return f"{req.headers=}"

@spaces.GPU(duration=4*60) # Not possible with IP-based quotas
def inner():
    return "ok"

def greet(request: gr.Request, n):
    token = _get_token(request)
    print(token)
    assert inner() ==  "ok"
    payload = token.split('.')[1]
    payload = f"{payload}{'=' * ((4 - len(payload) % 4) % 4)}"
    return json.loads(base64.urlsafe_b64decode(payload).decode())

demo = gr.Interface(fn=greet, inputs=gr.Number(), outputs=gr.JSON())
demo.launch(ssr_mode=False)