Example of async bot using webhook and aiohttp

An async echo bot using aiohttp and webhoook

examples/asynchronous_telebot/webhooks/async_webhook_aiohttp_echo_bot.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# This is an async echo bot using decorators and webhook with aiohttp
+# It echoes any incoming text messages and does not use the polling method.
+
+import logging
+import ssl
+import asyncio
+from aiohttp import web
+import telebot
+from telebot.async_telebot import AsyncTeleBot
+
+API_TOKEN = '<api_token>'
+WEBHOOK_HOST = '<ip/host where the bot is running>'
+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
+WEBHOOK_SSL_CERT = './webhook_cert.pem'  # Path to the ssl certificate
+WEBHOOK_SSL_PRIV = './webhook_pkey.pem'  # Path to the ssl private key
+WEBHOOK_URL_BASE = "https://{}:{}".format(WEBHOOK_HOST, WEBHOOK_PORT)
+WEBHOOK_URL_PATH = "/{}/".format(API_TOKEN)
+
+# Quick'n'dirty SSL certificate generation:
+#
+# openssl genrsa -out webhook_pkey.pem 2048
+# openssl req -new -x509 -days 3650 -key webhook_pkey.pem -out webhook_cert.pem
+#
+# 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
+
+logger = telebot.logger
+telebot.logger.setLevel(logging.INFO)
+bot = AsyncTeleBot(API_TOKEN)
+
+
+# Process webhook calls
+async def handle(request):
+    if request.match_info.get('token') == bot.token:
+        request_body_dict = await request.json()
+        update = telebot.types.Update.de_json(request_body_dict)
+        asyncio.ensure_future(bot.process_new_updates([update]))
+        return web.Response()
+    else:
+        return web.Response(status=403)
+
+
+# Handle '/start' and '/help'
+@bot.message_handler(commands=['help', 'start'])
+async def send_welcome(message):
+    await 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'])
+async def echo_message(message):
+    await bot.reply_to(message, message.text)
+
+
+# Remove webhook and closing session before exiting
+async def shutdown(app):
+    logger.info('Shutting down: removing webhook')
+    await bot.remove_webhook()
+    logger.info('Shutting down: closing session')
+    await bot.close_session()
+
+
+async def setup():
+    # Remove webhook, it fails sometimes the set if there is a previous webhook
+    logger.info('Starting up: removing old webhook')
+    await bot.remove_webhook()
+    # Set webhook
+    logger.info('Starting up: setting webhook')
+    await bot.set_webhook(url=WEBHOOK_URL_BASE + WEBHOOK_URL_PATH,
+                certificate=open(WEBHOOK_SSL_CERT, 'r'))
+    app = web.Application()
+    app.router.add_post('/{token}/', handle)
+    app.on_cleanup.append(shutdown)
+    return app
+
+
+if __name__ == '__main__':
+    # Build ssl context
+    context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
+    context.load_cert_chain(WEBHOOK_SSL_CERT, WEBHOOK_SSL_PRIV)
+    # Start aiohttp server
+    web.run_app(
+        setup(),
+        host=WEBHOOK_LISTEN,
+        port=WEBHOOK_PORT,
+        ssl_context=context,
+    )