Does wininet HTTP POST still work in latets MT4?

[chanar]

Hi, I have googled through everything and I'm unable to get POST working. The GET works just fine. I don't want to use WebRequest because I need asynchronous calls (not waiting for response)

Here's the most cleanest code I found. With all the found scripts the result is always 0

//+------------------------------------------------------------------+
//|                                                      Wininet.mqh |
//|                                                     Version: 1.0 |
//|                            Copyright 2015, Wemerson C. Guimaraes |
//|                  https://www.mql5.com/pt/users/wemersonrv/seller |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, Wemerson C. Guimaraes"
#property link      "https://www.mql5.com/pt/users/wemersonrv/seller"

#import  "Wininet.dll"
   int InternetOpenA(string, int, string, string, int);
   int InternetConnectA(int, string, int, string, string, int, int, int); 
   int InternetOpenUrl(int, string, string, int, int, int);
   int InternetReadFile(int, string, int, int& OneInt[]);
   int InternetCloseHandle(int); 
   int HttpOpenRequestA(int, string, string, string, string, string& AcceptTypes[], int, int);
   bool HttpSendRequestA(int, string, int, string, int);
#import





//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---

   string headers = "Content-Type: application/x-www-form-urlencoded";
   string data = "";
   string acceptTypes[1] = {"*/*"};

   int HttpOpen = InternetOpenA("HTTP_Client_Sample", 1, NULL, NULL, 0); 
   int HttpConnect = InternetConnectA(HttpOpen, "localhost/tradex", 8000, NULL, NULL, 3, 0, 1);
   int HttpRequest = HttpOpenRequestA(HttpConnect, "POST", "/index.php", "HTTP/1.1", NULL, acceptTypes, 0, 1);
   string result = HttpSendRequestA(HttpRequest, headers, StringLen(headers), data, StringLen(data));

   int read[1];
   Print("This is the POST result: " + result);

   return(0);
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   
  }
//+------------------------------------------------------------------+