I need working codes for WebRequest

[Masahiro Makoto]

I am testing the code below, I got it in this forum https://www.mql5.com/en/code/12296 but the WebRequest is giving error of "Error, authorization data not found in the server response (check login/password)"

I change Login details and I tried everything, I read mql5 documentation, It is also the same.

[Masahiro Makoto]

//+------------------------------------------------------------------+
//|                                                   WebRequest.mq5 |
//|                        Copyright 2015, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, MetaQuotes Software Corp."
#property link      "http://www.mql5.com"
#property version   "1.00"
#property strict
#property script_show_inputs
#property description "Sample script posting a user message "
#property description "on the wall on mql5.com"

input string InpLogin   ="";             //Your MQL5.com account
input string InpPassword="";             //Your account password
input string InpFileName="EURUSDM5.png"; //An image in folder MQL5/Files/
input string InpFileType="image/png";    //Correct mime type of the image
//+------------------------------------------------------------------+
//| Posting a message with an image on the wall at mql5.com          |
//+------------------------------------------------------------------+
bool PostToNewsFeed(string login,string password,string text,string filename,string filetype)
  {
   int    res;     // To receive the operation execution result
   char   data[];  // Data array to send POST requests
   char   file[];  // Read the image here
   string str="Login="+login+"&Password="+password;
   string auth,sep="-------Jyecslin9mp8RdKV"; // multipart data separator
//--- A file is available, try to read it
   if(filename!=NULL && filename!="")
     {
      res=FileOpen(filename,FILE_READ|FILE_BIN);
      if(res<0)
        {
         Print("Error opening the file \""+filename+"\"");
         return(false);
        }
      //--- Reading file data
      if(FileReadArray(res,file)!=FileSize(res))
        {
         FileClose(res);
         Print("Error reading the file \""+filename+"\"");
         return(false);
        }
      //---
      FileClose(res);
     }
//--- Creating the body of the POST request for authorization
   ArrayResize(data,StringToCharArray(str,data,0,WHOLE_ARRAY,CP_UTF8)-1);
//--- Resetting error code
   ResetLastError();
//--- Authorization request
   res=WebRequest("POST","https://www.mql5.com/en/auth_login",NULL,0,data,data,str);
//--- If authorization failed
   if(res!=200)
     {
      Print("Authorization error #"+(string)res+", LastError="+(string)GetLastError());
      return(false);
     }
//--- Reading the authorization cookie from the server response header
   res=StringFind(str,"Set-Cookie: auth=");
//--- If cookie not found, return an error
   if(res<0)
     {
      Print("Error, authorization data not found in the server response (check login/password)");
      return(false);
     }
//--- Remember the authorization data and form the header for further requests
   auth=StringSubstr(str,res+12);
   auth="Cookie: "+StringSubstr(auth,0,StringFind(auth,";")+1)+"\r\n";
//--- If there is a data file, send it to the server
   if(ArraySize(file)!=0)
     {
      //--- Forming the request body
      str="--"+sep+"\r\n";
      str+="Content-Disposition: form-data; name=\"attachedFile_imagesLoader\"; filename=\""+filename+"\"\r\n";
      str+="Content-Type: "+filetype+"\r\n\r\n";
      res =StringToCharArray(str,data);
      res+=ArrayCopy(data,file,res-1,0);
      res+=StringToCharArray("\r\n--"+sep+"--\r\n",data,res-1);
      ArrayResize(data,ArraySize(data)-1);
      //--- Forming the request header
      str=auth+"Content-Type: multipart/form-data; boundary="+sep+"\r\n";
      //--- Resetting error code
      ResetLastError();
      //--- Request to send an image file to the server
      res=WebRequest("POST","https://www.mql5.com/upload_file",str,0,data,data,str);
      //--- Checking the request result
      if(res!=200)
        {
         Print("Error sending a file to the server #"+(string)res+", LastError="+(string)GetLastError());
         return(false);
        }
      //--- Receiving a link to the image uploaded to the server
      str=CharArrayToString(data);
      if(StringFind(str,"{\"Url\":\"")==0)
        {
         res     =StringFind(str,"\"",8);
         filename=StringSubstr(str,8,res-8);
         //--- If file uploading fails, an empty link will be returned
         if(filename=="")
           {
            Print("File sending to server failed");
            return(false);
           }
        }
     }
//--- Create the body of a request to post an image on the server
   str ="--"+sep+"\r\n";
   str+="Content-Disposition: form-data; name=\"content\"\r\n\r\n";
   str+=text+"\r\n";
//--- The languages in which the post will be available on mql5.com  
   str+="--"+sep+"\r\n";
   str+="Content-Disposition: form-data; name=\"AllLanguages\"\r\n\r\n";
   str+="on\r\n";
//--- If the picture has been uploaded on the server, pass its link
   if(ArraySize(file)!=0)
     {
      str+="--"+sep+"\r\n";
      str+="Content-Disposition: form-data; name=\"attachedImage_0\"\r\n\r\n";
      str+=filename+"\r\n";
     }
//--- The final string of the multipart request
   str+="--"+sep+"--\r\n";
//--- Out the body of the POST request together in one string 
   StringToCharArray(str,data,0,WHOLE_ARRAY,CP_UTF8);
   ArrayResize(data,ArraySize(data)-1);
//--- Prepare the request header   
   str=auth+"Content-Type: multipart/form-data; boundary="+sep+"\r\n";
//--- Request to post a message on the user wall at mql5.com
   res=WebRequest("POST","https://www.mql5.com/ru/users/"+InpLogin+"/wall",str,0,data,data,str);
//--- Return true for successful execution
   return(res==200);
  }
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//--- Post a message on mql5.com, including an image, the path to which is taken from the InpFileName parameter
   Print("Before.");
   PostToNewsFeed(InpLogin,InpPassword,"Checking the new version of the WebRequest function\r\n"
                  "(This message has been posted by the WebRequest.mq5 script)",InpFileName,InpFileType);
   Print("After.");
  }
//+------------------------------------------------------------------+

[Masahiro Makoto]

I need help, I need a working Webrequest codes

[Sergey Golubev]

I can not help much (because I am not a coder sorry) ... but I found one thread (hope it is related to your question) - 
https://www.mql5.com/en/forum/286032