Heroku deployment

After deployment to Heroku the bot receives all messages, but doesn’t answer. In case the bot sends two messages consequently in a short period of time, only the second one gets delivered. When polling is used, all the messages sent by the bot get delivered. I also tried using webhooks without express, but nothing changed. I found several related issues, but in all of them the author ended up using node-telegram-bot library which solved the problem.

The code used for setting webhook:

const express = require("express");
const expressApp = express();

const bot = new Telegraf(process.env.BOT_TOKEN);
bot.telegram.setWebhook(`${process.env.BOT_URL}/bot${process.env.BOT_TOKEN}`);
expressApp.use(bot.webhookCallback(`/bot${process.env.BOT_TOKEN}`));

bot.use(Telegraf.log());
bot.use(session({
    ttl: 100
}));

expressApp.get("/", (req, res) => {
    res.send("Hello World!");
});
expressApp.listen(process.env.PORT, () => {
    console.log(`Example app listening on port ${process.env.PORT}!`);
});

[coxato]

Results in `Error listen EADDRINUSE.

Port is used by another application.

index.express.js

const Telegraf = require('telegraf')
const express = require('express')
const expressApp = express()

const port = process.env.PORT || 5000 // Correct port will be returned here
const bot = new Telegraf(process.env.BOT_TOKEN)

expressApp.use(bot.webhookCallback('/secret-path'))
bot.telegram.setWebhook('https://MY-APP.heroku.com/secret-path')

expressApp.get('/', (req, res) => {
  res.send('Hello World!')
})

expressApp.listen(port, () => {
  console.log(`Example app listening on port ${port}!`)
})

NOTE (Server): .launch will create a new server. NOTE (Security): Do not use token in secret path.

Hi, I have a question, what is /secret-path ?, What am I supposed to put there?

[TorlanDelta]

@TiagoDanin This is not what I asked, although I do appreciate your effort.

What I do struggle with is how to implement bot.launch in the code you provided yourself.

I have exactly the same setup with expessApp and stuff, so I was having trouble modifying my code to fit the bot.launch in.

Also I updated the telegraf obviously and I am still experiencing random malfunctioning API calls.

What is skipped almost always is the calls of ctx.telegram.deleteMessage() and ctx.answerCbQuery().

ctx.telegram.editMessageMedia() seems to ALWAYS work though.

I can post the whole code base of mine, but since its multiple files I do feel like it’s too much to go through for you guys. The fact is that it’s all working fine with locally hosted long polling app.