Using Azure Functions for serverless bots.

Simple echo bot using Azure Functions as webhook.

examples/serverless/azure_functions

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+# Using Azure Functions for serverless bots.
+# (Thanks to twitter.com/masyan for the idea)
+
+# By default the Azure Functions url is https://.../api/HttpTrigger for HttpTrigger type.
+# In this example we will use clear webhook url without /api/ -> https://.../HttpTrigger.
+# Also we set "authLevel": "anonymous".
+
+# For HttpTrigger type set "route" and "authLevel" in functions.json
+# {
+#   "bindings": [
+#   ...
+#   "authLevel": "anonymous"
+#   "route": "HttpTrigger"
+#   ]
+# }
+
+# To avoid using /api/ in url set "routePrefix":"" in host.json
+# {
+#   ...
+#   "extensions": {
+#     "http": {
+#       "routePrefix": ""
+#     }
+#   }
+# }
+
+import logging
+
+import azure.functions as func
+import telebot
+from telebot import apihelper, types
+
+logger = telebot.logger
+telebot.logger.setLevel(logging.DEBUG)
+
+# Set bot token
+TOKEN = ''
+
+# Uncomment this for using proxy for request
+# PROXY = ''
+# apihelper.proxy = {'https': PROXY}
+
+# Set WEBHOOK as your Azure Functions url (https://...azurewebsites.net/HttpTrigger)
+WEBHOOK = ''
+
+bot = telebot.TeleBot(TOKEN)
+
+@bot.message_handler(commands=['start'])
+def start(message):
+    bot.reply_to(message, 'Hello, ' + message.from_user.first_name)
+
+@bot.message_handler(func=lambda message: True, content_types=['text'])
+def echo_message(message):
+    bot.reply_to(message, message.text)
+
+# To avoid "error 429 too many request" set webhook only once. Or use time.sleep(1).
+def main(req: func.HttpRequest) -> func.HttpResponse:
+    bot.set_webhook(url=WEBHOOK)
+    request_body_dict = req.get_json()
+    update = telebot.types.Update.de_json(request_body_dict)
+    bot.process_new_messages([update.message])
+    return func.HttpResponse(body='', status_code=200)
+    
+# Sometimes "requests" version is important. 
+# azure-functions==1.0.4
+# PySocks==1.7.1
+# pyTelegramBotAPI==3.6.6
+# requests==2.10.0
+