//+------------------------------------------------------------------+
//|                                                WebRequest_00.mq4 |
//|                                                           amenbo |
//|                                                 泉の森の弁財天池 |
//+------------------------------------------------------------------+
#property copyright "amenbo"
#property link      "泉の森の弁財天池"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
   string cookie=NULL,headers;
   char post[],result[];
   int res;
//--- for working with server you need to add "https://www.google.com/finance" 
//--- to the list of the allowed URLs (Main menu->Tools->Options, "Expert Advisors" tab)
   string google_url="https://www.google.com/finance";
//--- reset last error
   ResetLastError();
//--- load html page from Google Finance
   int timeout=5000; //--- timeout less than 1000 (1 sec.) is not sufficient for slow Internet speed
   res=WebRequest("GET",google_url,cookie,NULL,timeout,post,0,result,headers);
//--- check errors
   if(res==-1)
     {
      Print("Error code =",GetLastError());
      //--- maybe the URL is not added, show message to add it
      MessageBox("Add address '"+google_url+"' in Expert Advisors tab of the Options window","Error",MB_ICONINFORMATION);
     }
   else
     {
      //--- successful
      PrintFormat("Download successful, size =%d bytes.",ArraySize(result));
      //--- save data to file
      int filehandle=FileOpen("GoogleFinance.htm",FILE_WRITE|FILE_BIN);
      //--- check
      if(filehandle!=INVALID_HANDLE)
        {
         //--- write result[] array to file
         FileWriteArray(filehandle,result,0,ArraySize(result));
         //--- close file
         FileClose(filehandle);
        }
      else Print("Error in FileOpen. Error code=",GetLastError());
     }
  }