import flask
from flask import request
import random
app = flask.Flask(__name__)
users = {}
@app.get("/")
def GET_index():
return '''
Tracking page
Welcome to this page!'''
@app.get("/styles.css")
def GET_styles():
body = "body { font-size: 300%; }"
etag = request.headers.get('If-None-Match')
if etag: etag = etag.split(', ')[0].strip('"')
if etag and etag in users:
users[etag] += 1
print("User",etag,"visit number",users[etag])
status = 304
else:
etag = str(random.randrange(0xFFFFFFFF))
users[etag] = 1
print("User",etag,"visit number",users[etag])
status = 200
return flask.Response(body, status=status, headers={'ETag':etag}, content_type='text/css')