socket-library-mt4-mt5.mqh – an unknown

[Stefano Cerbioni]

Hello, I have a problem with this library, socket-library-mt4-mt5.mqh. Basically, I built an EA

//+------------------------------------------------------------------+
//|                                              TERMINAL_IN_OUT.mq5 |
//|                                  Copyright 2025, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"

#define SOCKET_LIBRARY_USE_EVENTS
#include "socket-library-mt4-mt5.mqh"

// --------------------------------------------------------------------
// EA user inputs
// --------------------------------------------------------------------
input string   Hostname = "127.0.0.1";    // Server hostname or IP address
input ushort   ServerPort = 5002;         // Server port

// --------------------------------------------------------------------
// Global variables
// --------------------------------------------------------------------
ClientSocket *glbClientSocket = NULL;

// --------------------------------------------------------------------
// Initialization
// --------------------------------------------------------------------
int OnInit()
{
   // Crea e connette il client socket
   glbClientSocket = new ClientSocket(Hostname, ServerPort);

   if (glbClientSocket.IsSocketConnected())
      Print("Client connection succeeded");
   else
      Print("Client connection failed");

   return(INIT_SUCCEEDED);
}

// --------------------------------------------------------------------
// Deinitialization
// --------------------------------------------------------------------
void OnDeinit(const int reason)
{
   if (glbClientSocket)
   {
      delete glbClientSocket;
      glbClientSocket = NULL;
   }
}

// --------------------------------------------------------------------
// Event-driven communication (no OnTick / no OnTimer)
// --------------------------------------------------------------------
void OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam)
{
    // Controlla se l'evento proviene dal socket
    if (glbClientSocket && lparam == glbClientSocket.GetSocketHandle())
    {
        if (glbClientSocket.IsSocketConnected())
        {
            // Invia posizioni aperte appena richieste dal server
            int totalPositions = PositionsTotal();
            string msg = "";
            for (int i = 0; i < totalPositions; i++)
            {
                ulong ticket = PositionGetTicket(i);
                if (PositionSelectByTicket(ticket))
                {
                    string symbol = PositionGetString(POSITION_SYMBOL);
                    double profit = PositionGetDouble(POSITION_PROFIT);
                    msg += symbol + "," + IntegerToString(ticket) + "," + DoubleToString(profit,2) + "\n";
                }
            }

            glbClientSocket.Send(msg);
        }
        else
        {
            // Se il socket è disconnesso, lo ricreiamo
            delete glbClientSocket;
            glbClientSocket = new ClientSocket(Hostname, ServerPort);
        }
    }
    else
    {
        // Evento reale da tastiera (non dal socket)
        // Puoi ignorarlo o gestirlo separatamente
    }
}

that is supposed to send me the open and closed trades in real-time. Not wanting to rely on OnTick or OnTimer for performance reasons, I chose to use this library, socket-library-mt4-mt5.mqh, (https://www.mql5.com/en/blogs/post/706665) which should, let's say, bypass the limitations of OnTick and OnTimer.

If I open a server with Netcat and run my EA, I can see the 3 trades I already have open, but if I open additional trades afterward, it doesn’t send anything.

If anyone has experience with this library and could help me, I would be infinitely grateful.

[Laszlo Tormasi]

Stefano Cerbioni:
Hello, I have a problem with this library, socket-library-mt4-mt5.mqh. Basically, I built an EA that is supposed to send me the open and closed trades in real-time. Not wanting to rely on OnTick or OnTimer for performance reasons, I chose to use this library, socket-library-mt4-mt5.mqh, (https://www.mql5.com/en/blogs/post/706665) which should, let's say, bypass the limitations of OnTick and OnTimer.

If I open a server with Netcat and run my EA, I can see the 3 trades I already have open, but if I open additional trades afterward, it doesn’t send anything.

If anyone has experience with this library and could help me, I would be infinitely grateful.

The code you posted sends the positions on demand. When the server sends a message the EA replies with the open positions. 

You would need to put the sending code into OnTrade or OnTradeTransaction. 

[Stefano Cerbioni]

Laszlo Tormasi #:

The code you posted sends the positions on demand. When the server sends a message the EA replies with the open positions. 

You would need to put the sending code into OnTrade or OnTradeTransaction. 

thanks 4 rply