Telegram Bot Example free

by pennyfx in category Other at 17/03/2016
Description

Simple example that shows how to send a message to a Telegram channel.   Requires a Telegram API Key and a ChannelId.

 

To get a API key, follow these directions.

https://core.telegram.org/bots#botfather

 

The code in OnStart tries to find a ChannelId based on recent interactions with the robot.   Once you know a particular ChannelId, set it as a parameter.   It i's a little strange, but I could not figure out any other way to get a channelid.

Warning! Executing the following cBot may result in loss of funds. Use it at your own risk.
Notification Publishing copyrighted material is strictly prohibited. If you believe there is copyrighted material in this section you may use the Copyright Infringement Notification form to submit a claim.
Formula / Source Code
Language: C#
Trading Platform: cAlgo
using System;
using System.Linq;
using System.Net;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using cAlgo.API;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;
using cAlgo.Indicators;

namespace cAlgo
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.FullAccess)]
    public class TelegramBotExample : Robot
    {
        [Parameter("Telegram Bot Key", DefaultValue = "__bot_key__")]
        public string BOT_API_KEY { get; set; }

        // if you know which channel you want to broadcast to, add it here
        // otherwise the bot looks at the people and channels its' interacted with and
        // sends messages to everyone
        [Parameter("ChannelId", DefaultValue = "")]
        public string ChannelId { get; set; }


        List<string> _telegramChannels = new List<string>();

        protected override void OnStart()
        {
            // If you didn't set a channel, then find channels by looking at the updates
            if (string.IsNullOrEmpty(ChannelId))
            {
                _telegramChannels = ParseChannels(GetBotUpdates());
            }
            else
            {
                _telegramChannels.Add(ChannelId);
            }
            SendMessageToAllChannels("Hellow world.. ");

        }

        protected override void OnTick()
        {
            // Put your core logic here

        }

        protected override void OnBar()
        {
            // Put your core logic here
            int idx = this.MarketSeries.Close.Count - 2;
            if (this.MarketSeries.Close[idx] > this.MarketSeries.Open[idx])
            {
                SendMessageToAllChannels("Up Candle " + this.MarketSeries.Close[idx] + " " + this.MarketSeries.Open[idx]);
            }
            else
            {
                SendMessageToAllChannels("Down Candle " + this.MarketSeries.Close[idx] + " " + this.MarketSeries.Open[idx]);
            }
        }

        protected override void OnStop()
        {
            // Put your deinitialization logic here
        }


        //  Parses messages for bot and determines which channesl are listening
        private List<string> ParseChannels(string jsonData)
        {
            var matches = new Regex("\"id\"\\:(\\d+)").Matches(jsonData);
            List<string> channels = new List<string>();
            if (matches.Count > 0)
            {
                foreach (Match m in matches)
                {
                    if (!channels.Contains(m.Groups[1].Value))
                    {
                        channels.Add(m.Groups[1].Value);
                    }
                }
            }
            foreach (var v in channels)
            {
                Print("DEBUG: Found Channel {0} ", v);
            }
            return channels;
        }

        protected int updateOffset = -1;
        private string GetBotUpdates()
        {
            Dictionary<string, string> values = new Dictionary<string, string>();
            if (updateOffset > -1)
            {
                values.Add("offset", (updateOffset++).ToString());
            }

            var jsonData = MakeTelegramRequest(BOT_API_KEY, "getUpdates", values);

            var matches = new Regex("\"message_id\"\\:(\\d+)").Matches(jsonData);
            if (matches.Count > 0)
            {
                foreach (Match m in matches)
                {
                    int msg_id = -1;
                    int.TryParse(m.Groups[1].Value, out msg_id);
                    if (msg_id > updateOffset)
                    {
                        updateOffset = msg_id;
                    }
                }
            }
            return jsonData;
        }

        private void SendMessageToAllChannels(string message)
        {
            foreach (var c in _telegramChannels)
            {
                SendMessageToChannel(c, message);
            }
        }

        private string SendMessageToChannel(string chat_id, string message)
        {
            var values = new Dictionary<string, string> 
            {
                {
                    "chat_id",
                    chat_id
                },
                {
                    "text",
                    message
                }
            };

            return MakeTelegramRequest(BOT_API_KEY, "sendMessage", values);
        }

        private string MakeTelegramRequest(string api_key, string method, Dictionary<string, string> values)
        {
            string TELEGRAM_CALL_URI = string.Format("https://api.telegram.org/bot{0}/{1}", api_key, method);

            var request = WebRequest.Create(TELEGRAM_CALL_URI);
            request.ContentType = "application/x-www-form-urlencoded";
            request.Method = "POST";

            StringBuilder data = new StringBuilder();
            foreach (var d in values)
            {
                data.Append(string.Format("{0}={1}&", d.Key, d.Value));
            }
            byte[] byteArray = Encoding.UTF8.GetBytes(data.ToString());
            request.ContentLength = byteArray.Length;

            Stream dataStream = request.GetRequestStream();

            dataStream.Write(byteArray, 0, byteArray.Length);

            dataStream.Close();

            WebResponse response = request.GetResponse();

            Print("DEBUG {0}", ((HttpWebResponse)response).StatusDescription);

            dataStream = response.GetResponseStream();

            StreamReader reader = new StreamReader(dataStream);

            string outStr = reader.ReadToEnd();

            Print("DEBUG {0}", outStr);

            reader.Close();

            return outStr;


        }
    }
}
Comments

Shawn_Mapilot - March 18, 2016 @ 06:46

I entered my api key and channel ID and started the robot but it instantly stopped after. Any idea why?

Thanks

Shawn_Mapilot - March 18, 2016 @ 07:30

I figured out the issue with the robot instantly stopping. I am now having an issue with receiving messages. Its not getting sent to my channel. 

Shawn_Mapilot - March 18, 2016 @ 07:32

got it to work, thanks :)

Shawn_Mapilot - March 18, 2016 @ 08:03

I have a question regarding channel ID? So I add a serperate channel I want the Bot to send messages to. But it doesn't seem to work. Do I need to add the Bot to the group chat?

hedgebitcoin - May 05, 2016 @ 05:59

maybe this will help you out. Best luck - http://fx4btc.com/2016/05/telegram-bot-tradingview-charts/

Danis - August 12, 2019 @ 02:43

This work not any more with cTrader 3.5 (for me). Do you have another code for telegram in cBot to use?

flores.ernestoiii - February 07, 2020 @ 01:36

Hi. Hope you can help out with the issue since the latest update this Feb-2020. The code is having an error "The request was aborted: Could not create SSL/TLS secure channel." I have been using this code since last year for sending alerts to my telegram bot, but now the ctrader bot is crashing. Do you have a workaround? Appreciate your help. Cheers!

ctraderbeta - February 11, 2020 @ 05:53

I have having the same issue.

Crashed in OnStart with WebException: The request was aborted: Could not create SSL/TLS secure channel.

When I run this is Visual studio with dubug it does not trap any error 

ctraderbeta - February 11, 2020 @ 06:32

Fix detail here 

https://ctrader.com/forum/third-party-products/22853

My OnStart() now as follows 

 

protected override void OnStart()
        {
            ServicePointManager.Expect100Continue = true;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            // If you didn't set a channel, then find channels by looking at the updates
            if (string.IsNullOrEmpty(ChannelId))
            {
                _telegramChannels = ParseChannels(GetBotUpdates());
            }
            else
            {
                _telegramChannels.Add(ChannelId);
            }
            SendMessageToAllChannels("Hellow world.. ");

        }

ergun - April 28, 2020 @ 20:43

Thanks a lot

Gwave - May 04, 2020 @ 04:33

Hi guys, how did you solve the bot instantly stopping, after starting it? Any help will be much appreciated. Thanks.

EGYMIR - June 07, 2020 @ 00:14

@Gwave

Relplace OnStart Function with this one below

protected override void OnStart()
        {
            ServicePointManager.Expect100Continue = true;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            // If you didn't set a channel, then find channels by looking at the updates
            if (string.IsNullOrEmpty(ChannelId))
            {
                _telegramChannels = ParseChannels(GetBotUpdates());
            }
            else
            {
                _telegramChannels.Add(ChannelId);
            }
            SendMessageToAllChannels("Hellow world.. ");

        }

if u r using visual studio , you get error line under Tls12, just ignore it as it works when u build in CTrader.

It will fix the code for you

hankfreid - June 16, 2022 @ 10:17

If you need to practice for the Linux Foundation dumps and does not know where to obtain began then you definitely should get the Linux Foundation CKAD practice exam questions offered by the Examsleader. Updated CKAD Exam Dumps PDF is an exact replica of your real Certified Kubernetes Application Developer exam. A complete go through of this Linux Foundation CKAD pdf questions makes it straightforward for you to know the real Certified Kubernetes Application Developer. Therefore you may verify the worth of Certified Kubernetes Application Developer preparation material of Examsleader.

0