NamedPipes for metatrader 4

[Hannan Nussbaum]

Hello,

Can someone share a simple client/server named pipes or other simple solution to exchange data between two metatrader 4 terminals?

I tested several scripts. None seem to work.

[fxsaber]

Hannan Nussbaum:

Can someone share a simple client/server named pipes or other simple solution to exchange data between two metatrader 4 terminals?

Here.

[Hannan Nussbaum]

fxsaber:

I tried to compile it, it says problems in this line: CopyTicks(_Symbol, Ticks4Save, COPY_TICKS_INFO, 0, AMOUNT);

'COPY_TICKS_INFO' - undeclared identifier  

'CopyTicks' - function not defined  

[fxsaber]

This function is from MQL5 for example. Do not use it in MT4.

[Hannan Nussbaum]

Do you have an example in MQL4?

[fxsaber]

Hannan Nussbaum:

Do you have an example in MQL4?

#define AMOUNT 1000

#define TOSTRING(A) #A + " = " + (string)(A) + " "

// Example of forwarding double array
void OnStart()
{    
  CMemMapFile* FileMemory;
  
  if (GetFileMemory<double>(FileMemory, AMOUNT))
  {
    double Array4Save[AMOUNT];    
    ArrayInitialize(Array4Save, 1.23456);
    
    DataSave(FileMemory, Array4Save);
    
    double Array4Load[];    
    
    if (DataLoad(FileMemory, Array4Load) > 0)    
      Print(TOSTRING((_R(Array4Save) == Array4Load)) +
            TOSTRING(ArraySize(Array4Save)) +
            TOSTRING(ArraySize(Array4Load)));
     
    FileMemory.Close();   
  }
  
  delete FileMemory;
}

Result

2017.11.22 00:09:22.368 Test EURUSD,M1: (_R(Array4Save)==Array4Load) = 1 ArraySize(Array4Save) = 1000 ArraySize(Array4Load) = 1000 

[Hannan Nussbaum]

It runs fine now. How do I use it to exchange data between 2 terminals? 

For example suppose that I am looking for arbitrage opportunities, how do I set it to 2 way data transfer where each client is both client and server?

[fxsaber]

Hannan Nussbaum:

It runs fine now. How do I use it to exchange data between 2 terminals? 

For example suppose that I am looking for arbitrage opportunities, how do I set it to 2 way data transfer where each client is both client and server?

DataSave and DataLoad functions.

[Hannan Nussbaum]

I'm trying to do the same example between 2 metatrader terminals without success so far.

How the other terminal know what array to look for? By name of array?

It is not working for me so far.

[Hannan Nussbaum]

if (DataLoad(FileMemory, Array4Load) > 0)    

      Print(TOSTRING((_R(Array4Save) == Array4Load)) +

            TOSTRING(ArraySize(Array4Save)) +

            TOSTRING(ArraySize(Array4Load)));

What is _R in this code and what are you comparing between 2 arrays?

[Hannan Nussbaum]

What I need is a simple array with ask bid for 2 terminals.