Webhook Telebot Flask

# -*- coding: utf-8 -*-

from flask import Flask
import telebot

app = Flask(__name__)

# settings for webhook
API_TOKEN = '<здесь мой токен от бота>'

WEBHOOK_HOST = 'blablabla.ru'  # здесь мой сайт с SSL сертификатом и оценкой А от ssllabs.com/ssltest/
WEBHOOK_PORT = 8443  # 443, 80, 88 or 8443 (port need to be 'open')
WEBHOOK_LISTEN = '0.0.0.0'  # In some VPS you may need to put here the IP addr

# When asked for "Common Name (e.g. server FQDN or YOUR name)" you should reply
# with the same value in you put in WEBHOOK_HOST

WEBHOOK_URL_BASE = "https://%s:%s" % (WEBHOOK_HOST, WEBHOOK_PORT)
WEBHOOK_URL_PATH = "/%s/" % (API_TOKEN)


bot = telebot.TeleBot(API_TOKEN)


@bot.message_handler(func=lambda message: True, content_types=['text'])
def echo_message(message):
    bot.reply_to(message, message.text)


# Empty webserver index, return nothing, just http 200
@app.route('/', methods=['GET', 'HEAD'])
def index():
    return 'Hello, it is Flask'


# Process webhook calls
@app.route(WEBHOOK_URL_PATH, methods=['POST'])
def webhook():
    if flask.request.headers.get('content-type') == 'application/json':
        json_string = flask.request.get_data().decode('utf-8')
        update = telebot.types.Update.de_json(json_string)
        bot.process_new_updates([update])
        return ''
    else:
        flask.abort(403)


# Handle '/start' and '/help'
@bot.message_handler(commands=['help', 'start'])
def send_welcome(message):
    bot.reply_to(message,
                 ("Hi there, I am EchoBot.\n"
                  "I am here to echo your kind words back to you."))


# Handle all other messages
@bot.message_handler(func=lambda message: True, content_types=['text'])
def echo_message(message):
    bot.reply_to(message, message.text)


# Remove webhook, it fails sometimes the set if there is a previous webhook
bot.remove_webhook()

@app.route('/set_webhook', methods=['GET', 'POST'])
def set_webhook():
    s = bot.set_webhook(url=WEBHOOK_URL_BASE+WEBHOOK_URL_PATH)
    if s:
        print(s)
        return "webhook setup ok"
    else:
        return "webhook setup failed"


# Set webhook
bot.set_webhook(url=WEBHOOK_URL_BASE+WEBHOOK_URL_PATH)
                # certificate=open(WEBHOOK_SSL_CERT, 'r'))


if __name__ == '__main__':
    # Start flask server
    app.run(port=WEBHOOK_PORT,
            host=WEBHOOK_LISTEN,
            debug=True)