Telegram Bot - HTTP Client issue

Posted on Fri 28th, June 2019

• #1

Crash

Hi guys,

i try to send a messages from the ESP8266-01 by using the espruino firmware.

>process.env
={
  VERSION: "2v03",
  GIT_COMMIT: "e77d74f6",
  BOARD: "ESP8266_BOARD",
  FLASH: 0, RAM: 81920,
  SERIAL: "807d3a69-78f3",
  CONSOLE: "Telnet",
  MODULES: "Flash,Storage,hea" ... "r,crypto,neopixel",
  EXPTR: 1073643636 }

The wifi connection is established successfully.

 	var request = http.get(encodeURIComponent("http://api.telegram.org/bot{REPLACED_WITH_TOKEN}/sendMessage?chat_id={REPLACE_WITH_MY_ID}&text=HI"), function(res) {
		res.on('data', function(data) {
			console.log("RESPONSE:", data);
		});
      res.on('close', function() { 
        console.log(res);
      });
	});
  console.log(request);
  request.on('error', (err) => {
  console.log(err);
});

Response of the error case:

{ "code": -6,
  "message": "not found"
 }

After that I try to send a message via GET or POST to the telegram bot.
Unfortunately I always get error messages. I am not sure if the requests arrive at telegram at all.
Can someone give me a hint?

I have already found a module in the internet. But that also do not work.
http://wiki.amperka.ru/js:telegram

Edit: If I just open the url in the browser the request will send and the telegram bot has the message.

• #2

Ollie in reply to @Crash

Can you get a 200 response using a tool like Postman or Insomnia with the same endpoint? That's the first thing I'd check. That error suggests host is not found.

Also, but without knowing, I'd also check whether http is supported by Telegram. I would expect an API like that to use https (in which case you have a problem on ESP8266).

• #3

Crash

Hi.

Yes. I already made some requests with postman. http and https work in postman without any issues on the same endpoint.

Why there is a problem with http on esp8266?

Edit:

>var request = http.get(
:encodeURIComponent("http://api.thecatapi.com/v1/images/search?size=full"),
:(response) => {
:console.log(response);
:response.on('data', (data) => {console.log(data);})
:});
:request.on('error', (err) => {console.log(err)});
=undefined
{ "code": -6,
  "message": "not found"
 }

Now I'm sure that is isn't an issue with telegram bot.

Edit2:

var http = require("http");
http.get("http://www.espruino.com", function(res) {
  res.on('data', function(data) {
    console.log(data);
  });
});

This works fine. I got the whole html page...

• #4

Ollie

I think ESP8226 build does not support encodeURIComponent(). See the docs - not available on devices with low flash memory. Try it without.

• #5

Crash

>encodeURIComponent("https://www.google.de")
="https%3A%2F%2Fwww.google.de"

Seems to work fine.
Code compiles without any problems.

Latest result:

>var options = url.parse("http://api.telegram.org/bot{MYTOKEN}/getUpdates")
={
  protocol: "http:",
  method: "GET",
  host: "api.telegram.org",
  path: "/bot{MYTOKEN}" ... "{MYTOKEN}/getUpdates",
  pathname: "/bot{MYTOKEN}" ... "{MYTOKEN}/getUpdates",
  search: null, port: null, query: null }
>var request = require("http").request(options, function(res) {
:  res.on('data', function(data) {
:    console.log("HTTP> "+data);
:  });
:  res.on('close', function(data) {
:    console.log("Connection closed");
:  });
:});
:request.on('error', (err) => {console.log(err);});
=undefined
>request.end()
=undefined
HTTP> <html>
<head>
HTTP> <title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.12.2</center>
</body>
</html>
Connection closed

The "301 Moved Permanently" should be a real result of telegram. Why it didn't work in espruino. No issues on browser or on postman.

• #6

Crash

Request with curl results in the same.

No problem on espruino. Telegram didn't support http. Only https.

Thank you - My fault :)

Why espruino didn't support https on esp8266?
• #7

Ollie

Ok, glad sorted. Re https, there's not enough memory on the device for the certificate management. You can use official Espruino Wifi board, and I think also supported on ESP32.
• #8

Ollie

There's also this proxy which may work for you. http://httptohttps.mrtimcakes.com/ by espruino forum member @MrTimcakes
• #9

Crash

That page does not seem to work anymore.
But it's no problem, I just run a http to https proxy as node application myself.

Works great.
@Ollie Thank you for your support :) Thumbs up :)

Post a reply
- Bold
- Italics
- Link
- Image
- List
- Quote
- code
- Preview
Formatting Help

Don't worry about formatting, just type in the text and we'll take care of making sense of it. We will auto-convert links, and if you put asterisks around words we will make them bold.

Tips:

Create headers by underlining text with ==== or ----

To *italicise* text put one asterisk each side of the word

To **bold** text put two asterisks each side of the word

Embed images by entering:
![](https://www.google.co.uk/images/srpr/logo4w.png)
That's the hard one: exclamation, square brackets and then the URL to the image in brackets.

* Create lists by starting lines with asterisks

1. Create numbered lists by starting lines with a number and a dot

> Quote text by starting lines with >

Mention another user by @username

For syntax highlighting, surround the code block with three backticks:

```
Your code goes here
```
Just like Github, a blank line must precede a code block.

If you upload more than 5 files we will display all attachments as thumbnails.

For a full reference visit the Markdown syntax.

Telegram Bot - HTTP Client issue

About