How to handle unsupported commands?

I am using webhooks with Koa as mentioned in examples. But on unsupported commands, Telegraph is returning back with 404 Not Found which makes telegram keep retrying. I want to rather reply with a message saying that this command is not supported. Is there an existing way to do that?

[sidoshi]

Also Is there a way to send a default response to any kind of interaction other than explicitly allowed. I know I can listen for all events, but is there a better way?

It works well with text messages. What I meant was other kinds of interactions like sending media or locations. I assumed that text would only set the default for text messages. Other messages like media would still receive 400 since no defaults are found and hence Telegram would keep retrying.

I should have just checked first instead of assuming that and asking, sorry for that 😦 Anyways, I have tried it and verified that

bot.on('message', ctx => ctx.reply('Default reply'));

sets default for all kinds of messages.

I will go ahead and close this. Thank you 🙂

[Otto-AA]

I am not sure how/if this works with Koa but in Node.js you can listen all unhandled messages like this:

/* ... all your commands above ... */

// Default response
bot.on('text', ctx => ctx.reply('Default reply'));

If you only want this for commands you can look if the first letter of the message is a /