Easy websocket library for mql5

An easy to use websocket library for MQL5. It supports:

• ws:// and wss:// (secure websocket)
• text and binary data
• automatic ping-pong handling on protocol level
  (keep-alive protocol hand shake)
• automatic fragmented message handling on protocol level
  (large data transfer enabled)
  

==================================================
ATTENTION: 
PLEASE ConTACT SELLER BEFORE PURCHASE.
Due to the nature of this kind of library, 

FULL FEATURE DEMO VERSION CAN BE PROVIDED ON REQUEST
==================================================

This library requires:

Win64 OpenSSL v1.1.1d

• - https://slproweb.com/products/Win32OpenSSL.html

and MSVC 14 runtime 

• - https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

which can be downloaded for free.

Sample code is as simple as following:

#include <wsmql.mqh>


void OnStart()
  {
   // ATTENTION: library initialization must be executed first
   wsInit();

   string url = "www.bitmex.com:443/realtime";
   string msg = "{ "op": "subscribe", "args" : ["orderBookL2_25:XBTUSD"] }";

   WSSHANDLE handle = wsConnect(url);

   int len;
   string resp;
   char recv_buffer[];
   ArrayResize(recv_buffer, 65536);

   if(handle!=0)
     {
      Sleep(1000);
      char buffer[];
      StringToCharArray(msg, buffer);

      wsSendBinary(handle, buffer, ArraySize(buffer)-1);

      int counter = 1;
      StringReserve(resp, 65536);

      while(!IsStopped())
        {
         len = 65535;
         counter = wsReceiveBinary(handle, recv_buffer, len);
         if(counter >= 0)
           {
            string r = CharArrayToString(recv_buffer,0, len);
            PrintFormat("+++ %d: %d [%s]", counter, len, r);
           }
         Sleep(100);
        }
      PrintFormat("*** disconnect");
      Sleep(1000);
      wsDisconnect(handle);
     }
   PrintFormat("*** DONE");
  }

API provided:

• Connection:
• WSSHANDLE wsConnect(string wssURL)
• void wsDisconnect(WSSHANDLE handle)
  
• Text send and receive:
• int wsReceive(WSSHANDLE handle, string& buffer, int limit)
• int wsSend(WSSHANDLE handle, string buffer)
  
• Binary send and receive:
• int wsReceiveBinary(WSSHANDLE handle, char& buffer[], int& limit)
• int wsSendBinary(WSSHANDLE handle, char& buffer[], int limit)
  
• Status:
• int wsReceived(WSSHANDLE handle)
• int wsIsConnected(WSSHANDLE handle)

Feel free to contact me for support and other options available.

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