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Telegram Bot: using offset in getUpdates method

I want to create a telegram bot to subscribe to a channel so that subscribers can receive site updates. But I need the user to start communicating with my bot. I will use deep linking according to this url: https://core.telegram.org/bots#deep-linking (assuming there are 2 users)

  • Show below link # 2 https://telegram.me/MyBot?start= $ unique_code
  • User # 2 clicks on the link and starts a chat with the bot.
  • User # 2 returns to my site and clicks the checkout button.
  • The site creates a getUpdates request and finds the chat_id associated with the unique_id for the user.
  • The offset will be increased by 1.

Now there is a problem. When the bias has increased, as for user # 1, who starts chatting with the bot immediately in front of user # 2. If # 1 presses the check button after increasing the offset by # 2, the bot will not receive message # 1.

ps I don't want to use ssl and webhook

Sorry for the bad english.

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You are almost right about what you are trying to achieve. Two things:

  • Step 3 is unnecessary.
  • You must store this $ unique_id somewhere, along with the username on your website. Then, when that person clicks on your link with your unique ID, you can associate a user with a userId for the user's user.

So the steps:



  • Create a unique code (let's call it $ unique_code). Save this code along with the username currently logged in to your website (call this $ username) into the database.
  • Show user # 2 the link to this unique code ( https://telegram.me/MyBot?start= $ unique_code)
  • The user clicks on the link, after which your bot receives a message with unique_code $ ('/ start $ unique_code').
  • The bot binds $ unique_code to $ username and saves the chat_id of the user who sent the message to the database. (message.chat.id - see https://core.telegram.org/bots/api#message )

Now when you want to send a message to $ username, just find their chat_id in the database and send a message to this chatId ( https://core.telegram.org/bots/api#sendmessage ).

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