Help with EA development PLEASE

[Usman Abu Zaif]

Hello

//+------------------------------------------------------------------+
//|                         TelegramCopier_GOLD Only       |
//|                        Copyright 2024,                |
//|                        Email:                   |
//+------------------------------------------------------------------+
#property copyright "Copyright 2024, "
#property link     Telegram  "@Malikusm"
#property version   "1.02"
#property strict
#include <stdlib.mqh>         // Include library for string conversion functions
input string TelegramBotToken = "7749494425:AAG1lHx2ZbFAGd6nWeq9CpCowxoppC9EiUo"; // Telegram Bot Token
input string TelegramChatID   = "-1002286425360";                                  // Telegram Chat ID
input bool UseFixedLotSize    = false;                                             // Use fixed lot size or risk-based
input double FixedLotSize1    = 0.1;                                               // Fixed lot size for the first trade
input double FixedLotSize2    = 0.05;                                              // Fixed lot size for the second trade
input double PercentRisk1     = 1.0;                                               // Percentage of account to risk on the first trade
input double PercentRisk2     = 0.5;                                               // Percentage of account to risk on the second trade
input int TimerPeriod         = 10;                                                // Timer set to check for updates every 10 seconds
input bool UseFixedSLTP       = false;                                             // Option to use fixed SL and TP
input double FixedSL          = 50;                                                // Fixed Stop Loss in pips
input double FixedTP          = 100;                                               // Fixed Take Profit in pips
char result[4096];                                                                  // Buffer for WebRequest results
string resultHeaders;                                                               // Buffer for WebRequest headers
//+------------------------------------------------------------------+
// OnInit function to initialize the EA
int OnInit()
{
    EventSetTimer(TimerPeriod); // Set timer for periodic execution
    Print("EA Initialized Successfully");
    return INIT_SUCCEEDED;
}
//+------------------------------------------------------------------+
// OnDeinit function to clean up when the EA is removed
void OnDeinit(const int reason)
{
    EventKillTimer();
    Print("EA Deinitialized");
}
//+------------------------------------------------------------------+
// Custom function to get updates from Telegram via WebRequest
string GetTelegramUpdates() 
{
    char data[1];   // Minimal data array since no data is sent in GET
    string fullURL = "http://127.0.0.1:5000/get_signal";
    int res = WebRequest(
        "GET",                   // HTTP method
        fullURL,                 // URL to request
        "",                      // Cookie placeholder (null)
        "",                      // Referer placeholder (null)
        10000,                   // Timeout in milliseconds
        data,                    // Data (empty for GET requests)
        0,                       // dataSize is 0 because we are not sending any data
        result,                  // Buffer for response data
        resultHeaders            // Buffer for response headers
    );
    if (res > 0) {
        string response = CharArrayToString(result, 0, res);
        Print("Received Signal from Server: ", response);
        return response;
    } else {
        int errorCode = GetLastError();
        Print("Failed to get updates from Local Server, Error Code: ", res, ", GetLastError Code: ", errorCode, ", Full URL: ", fullURL, ", Headers: ", resultHeaders);
        return "";
    }
}
//+------------------------------------------------------------------+
// OnTimer function to periodically check and process messages
void OnTimer()
{
    string updates = GetTelegramUpdates();
    if (StringLen(updates) > 0) {
        ProcessTelegramSignals(updates);
    }
}
//+------------------------------------------------------------------+
// Function to process Telegram signals
void ProcessTelegramSignals(string message) {
    // Here, you'd parse the actual message for trade commands
    if(StringFind(message, "GOLD SELL") >= 0) {
        double sellPrice = ExtractPriceFromMessage(message, "GOLD SELL @");
        double sl = ExtractPriceFromMessage(message, "SL @");
        double tp = ExtractPriceFromMessage(message, "TP @");
        if (UseFixedSLTP) {
            sl = sellPrice + FixedSL * Point;
            tp = sellPrice - FixedTP * Point;
        }
        // Place trade
        if(UseFixedLotSize) {
            PlaceSellOrder("GOLD", sellPrice, FixedLotSize1, sl, tp);
        } else {
            double lotSize = CalculateLotSize(sellPrice, sl, PercentRisk1);
            PlaceSellOrder("GOLD", sellPrice, lotSize, sl, tp);
        }
        Print("Sell order placed for GOLD at ", sellPrice);
    }
    // Add similar blocks for BUY orders and other instruments
}
//+------------------------------------------------------------------+
// Helper function to extract price from message based on a given prefix
double ExtractPriceFromMessage(string message, string prefix) {
    int start = StringFind(message, prefix);
    if(start >= 0) {
        start += StringLen(prefix);
        int end = StringFind(message, "\n", start);
        if (end < 0) end = StringLen(message); // Handle case where there is no newline
        string priceStr = StringSubstr(message, start, end-start);
        return StrToDouble(priceStr);
    }
    return 0;
}
//+------------------------------------------------------------------+
// Helper function to calculate lot size based on risk percentage
double CalculateLotSize(double entryPrice, double stopLoss, double riskPercent) {
    double riskAmount = AccountBalance() * riskPercent / 100.0;
    double pipValue = MarketInfo(Symbol(), MODE_TICKVALUE);
    double stopLossPips = MathAbs(entryPrice - stopLoss) / Point;
    double lotSize = riskAmount / (stopLossPips * pipValue);
    return NormalizeDouble(lotSize, 2);
}
//+------------------------------------------------------------------+
// Helper function to place a sell order
void PlaceSellOrder(string symbol, double price, double lotSize, double sl, double tp) {
    double stopLoss = UseFixedSLTP ? price - FixedSL * Point : sl;
    double takeProfit = UseFixedSLTP ? price - FixedTP * Point : tp;
    int ticket = OrderSend(symbol, OP_SELL, lotSize, price, 3, stopLoss, takeProfit, "Telegram Signal Sell", 0, 0, Red);
    if (ticket < 0) {
        Print("Error placing sell order: ", GetLastError());
    } else {
        Print("Sell order placed successfully, Ticket: ", ticket);
    }
}
//+------------------------------------------------------------------+

I am trying to compile an EA that can execute 2 trades at same time as per the format;

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px 'Helvetica Neue'; color: #000000} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px 'Helvetica Neue'; color: #000000; min-height: 15.0px}

GOLD SELL @ 2755

💵SECOND SELL LIMIT @ 2761

SL @ 2766

TP @ 2745

🛡FOLLOW MONEY MANAGEMENT

I have used ;

1. http://127.0.0.1:5000/get_signal OR. http://localhost:5000/get_signal (Webrequest Using a local Host server)
2. https://smee.io/OFSJrd4xSajjiy1t

The functionality was tested, and telegram to the server have been working fine, but not able to execute on MT4. Appreciate if someone can help

I have tried mutiple approaches but I have failed. 

Getting this error on MT4 logs;

2024.11.01 19:23:13.272 TelegramCopierEA_Custom_XAU 1.6 XAUUSD,H1: Failed to get updates from Local Server, Error Code: -1, GetLastError Code: 4051, Full URL: http://127.0.0.1:5000/get_signal, Headers: 

[Oleksandr Medviediev]

NOTE1: you need to use designated field (Code Alt+S) to insert your code.

NOTE2: Traders and coders are coding for free:

• if it is interesting for them personally, or
• if it is interesting for many members of this forum.

Freelance section of the forum should be used in most of the cases.

[Fernando Carreiro]

Your topic has been moved to the section: MQL4 and MetaTrader 4
Please consider which section is most appropriate — https://www.mql5.com/en/forum/172166/page6#comment_49114893

[Michael Charles Schefe]

maybe your error reporting could be better. see example of function "postRequest" at this article here
https://www.mql5.com/en/articles/15750