Heroku Port issue

After deployment my bot with TelegramBots java sdk on heroku, app work fine, but after 90 second it’s crashed with log: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch Heroku dynamically assigns your app a port, so you can’t set the port to a fixed number. Heroku adds the port to the env, so you can pull it from there. How i can switch listener like this (js telegram sdk): .listen(process.env.PORT || 5000) I can get port from env in java like System.getenv("PORT") but can’t find where to put it in TelegramBots sdk.

[drunckoder]

@consoleassert As long as I understand, you can’t use webhook bots on heroku. A quote from https://core.telegram.org/bots/webhooks :

You’ll need a server that:

Supports IPv4, IPv6 is currently not supported for Webhooks. Accepts incoming POSTs from 149.154.167.197-233 on port 443,80,88 or 8443.

As you’ve said, heroku specifies the port for your app by itself.

So you have to use a longpolling bot.

Longpolling bot is not a WEB app on heroku, as it doesn’t listen to the incoming connections! It manually asks telegram servers wether they have a message for your bot.

So all you have to do is:

1. Change your bot type to longpolling
2. Change your heroku app type to worker (inside the procfile, specify it like “worker: command_to_launch” instead of “web: some_command”)
3. Push changes to heroku
4. Launch your bot: “heroku ps:scale worker=1”

Hope this helps you!

[rubenlagus]

@consoleassert Did @drunckoder solution work for you? If so, can you close the issue?