How can I allow an EA on one currency to communicate with the EA on another? - page 3

I thought order 0 was the most recent, no I wan't the other EAs to cease using a specific trading method if one of the symbols is in a bad situation, this is just a form of money management.

I have changed it from 0 to OrdersHistoryTotal()-1

don't do this for OrderClose() or for OrderDelete()

Yes it's just to stop opening orders.

Hi MetaNt:

I am the developer of MetaComm library for MT4.

 - This library allows to interchange messages (strings) over TCP/IP:

   - between EAs/scripts/indicators in the same MT4 terminal. 

   - between EAs/scripts/indicators in different MT4 terminals in the same machine.

   - bettween EAs/scripts/indicators running in different machines across the internet.

- This library allows to implement: 

   - Arbitrage strategies between different brokers or accounts 

   - Hedging between different brokers or accounts

   - Communicate EAs with software written in other languages (c/c++, python, visual basic, etc).

 

This is an example of client implemented as Expert Advisor:

//-------------------------------------------

// include MetaComm library and helper functions

#include <MetaComm.mqh>

// global variable to store the client ID 

int client1

//-------------------------------------------

// Expert initialization function

//-------------------------------------------

int OnInit() {

   int result;

   Print("-- MetaComm client --");

   // create client, and connect to server localhost:5555

   // if this is the first client or server created, the library is 

   // atomatically init

   client1 = MC_client_create("localhost", 5555);

   // verify result

   if client1 == -1) {

      // init error

      Print("Init Error!!! " + MC_errdesc());

      return -1;

   }

   // client created OK

   Print("Client STARTED");

   return(INIT_SUCCEEDED);

  }

//-------------------------------------------

// Expert deinitialization function

//-------------------------------------------

void OnDeinit(const int reason)

{

   // destroy client (and deinit library if there is no more clients or 

   // servers running)

   int result = MC_client_destroy(client1);

   Print("Client TERMINATED");

}

//-------------------------------------------

// Expert tick function

//-------------------------------------------

void OnTick()

{

   // string to receive response

   string response;

   int result;

   // timeout for response

   int timeout = 1500;

   

   // create request string

   string request = Symbol() + ": " + "BID=" + DoubleToString(Bid, Digits) + 

                                      " ASK=" + DoubleToString(Ask, Digits);

   Print("Client sending: " + request);

   // send request to server, and receive response

   result = MC_client_request(client1, request, response, timeout );

   // verify if there is a response from server

   if (result == -1)

      Print("Error!!! " + MC_errdesc());

   else

      Print("Response received from server: " + response);

}

//-------------------------------------------

this EA, on init create a MetaComm Client, and in each tick will send to server a message with the current quote of symbol, like the following:

"EURUSD: BID=1.9834 ASK=1.9831"

And....., this is the code for server written as MQL4 Script:

//-------------------------------------------

// include MetaComm library and helper functions

#include <MetaComm.mqh>

// global variable to store the server ID 

int server1

//-------------------------------------------

// Script program start function

//-------------------------------------------

void OnStart()

{

   // string to receive request from clients

   string request;

   int result;

   Print("--- MetaComm server ---");

   // create server listening in server_port

   server1 = MC_server_create(server_port);

   // verify

   if (server1 == -1) 

   {

      // error creating server

      Print("Server create Error!!! " + MC_errdesc());

      return;

   }

   // server created OK. 

   Print("Server STARTED");

   // Wait messages (requests) from clients

   while(!IsStopped()) 

   {

      // verify if there is a request available

      if (MC_server_request_available(server1) == 1) 

      {

         // retrieve client request and store in request string

         result = MC_server_get_request(server1, request, 1500);   

         // verify

if (result == -1)

{

   // error 

   Print("Server get request error");

}

else

{

            Print("Request: " + request);

            // resend the same message to client as response

   MC_server_send_response(server1, request);

}

      }

   }

   // destroy server. If there is no more clients or servers running, 

   // the library is also deinit automatically

   MC_server_destroy(server1);

   Print("MetaComm server TERMINATED");

}

//-------------------------------------------

The server receives the request from clients, and send back the same message as response.

In the examples is demonstrated the ease of use of the library. 

 

I think this library can help you to implement Hegding.

I am not trying to make spam, I am just offering a solution in which I have worked and I see many traders and programmers need. 

I did attach a demo compiled you can test 

Regards