如何使用heroku为电报机器人创建webhook？

Question

我正在尝试使用 webhook 部署一个简单的 echo2 机器人。轮询工作正常。但是，我想通过 webhook 使用机器人。对于这个问题，我在互联网上没有找到任何容易理解的答案。 我需要在以下代码中进行哪些更改才能使机器人使用 webhook.. 工作？

import logging

from telegram.ext import Updater, CommandHandler, MessageHandler, Filters

# Enable logging
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    level=logging.INFO)

logger = logging.getLogger(__name__)


# Define a few command handlers. These usually take the two arguments update and
# context. Error handlers also receive the raised TelegramError object in error.
def start(update, context):
    """Send a message when the command /start is issued."""
    update.message.reply_text('Hi!')


def help(update, context):
    """Send a message when the command /help is issued."""
    update.message.reply_text('Help!')


def echo(update, context):
    """Echo the user message."""
    update.message.reply_text(update.message.text)


def error(update, context):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, context.error)


def main():
    """Start the bot."""
    # Create the Updater and pass it your bot's token.
    # Make sure to set use_context=True to use the new context based callbacks
    # Post version 12 this will no longer be necessary
    updater = Updater("TOKEN", use_context=True)

    # Get the dispatcher to register handlers
    dp = updater.dispatcher

    # on different commands - answer in Telegram
    dp.add_handler(CommandHandler("start", start))
    dp.add_handler(CommandHandler("help", help))

    # on noncommand i.e message - echo the message on Telegram
    dp.add_handler(MessageHandler(Filters.text, echo))

    # log all errors
    dp.add_error_handler(error)

    # Start the Bot
    updater.start_polling()

    # Run the bot until you press Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT. This should be used most of the time, since
    # start_polling() is non-blocking and will stop the bot gracefully.
    updater.idle()


if __name__ == '__main__':
    main()

Answer 1

使用网络钩子：

# Use env variable PORT
PORT = int(os.environ.get("PORT", 3978)) 
updater.start_webhook(listen="0.0.0.0", port=PORT, url_path='TELEGRAM_TOKEN')

updater.bot.setWebhook('https://mywebhook/TELEGRAM_TOKEN')

注意事项：

• 设置 BotFather 收到的 TELEGRAM_TOKEN
• 设置相关端口（可能取决于运行 webhook 的应用程序）：上面的示例显示了如何在 Heroku 上绑定端口
• webhook 必须侦听 HTTPS

Answer 2

您可以删除 updater.start_polling() 调用并改用它。

Webhook for Heroku python-telegram-bot

确保您已经在 heroku 上创建了应用程序。