Firemonkey RESTRequest.Execute error on Windows but not OSX

[TrevorS 3]

I have created an API in Node.JS serving data and PDFs to my Angular front end - all works perfectly. I've also added the PDF bit onto an existing Delphi App that my company uses. 

 

There are 5 difference classes of PDF document.

 

The Delphi app works 100% of the time, for all PDF types when I compile it for Mac OSX, however, when I run the Windows version, I get problems with 2 document types - 3 work perfectly

(I can also use Postman to get the PDFs without any errors on all types)

I create the PDFs on the fly in the server, and the problem PDFs are created from the same bits of server code as the ones that fail. 

 

Error: No mapping for the Unicode character exists in the target multi-byte code page

 

I've tried changing the headers sent from the server, and also varied the request headers:  I've tried different Content-Types and specified the charset=utf-8. 

The simple Delphi code bellow, works for all PDF types on the Mac, but only works for a subset of the document types on Windows.

 

(It's the RESTRequest.Execute bit that fails)

 

                RESTClient.BaseURL                := 'https://api.mysite.com/pdf/' + url;
                RESTREquest.Method                := rmGet;

                RESTRequest.Params.AddItem;
                RESTRequest.Params[0].Kind        :=  pkHTTPHEADER;
                RESTRequest.Params[0].ContentType :=  ctTEXT_PLAIN;
                RESTRequest.Params[0].Options     := [ poDoNotEncode ];
                RESTRequest.Params[0].name        := 'authorization';
                RESTRequest.Params[0].value       := 'Bearer ' + Token;

                RESTRequest.Execute;

                 if RESTResponse.StatusCode = 200 then begin

                    RespBytes  := RESTResponse.RawBytes;

 

 

 

 

Edited March 30, 2022 by TrevorS
Clarify where the error occurs

[Uwe Raabe 2166]

Which Delphi version?

[TrevorS 3]

Embarcadero® RAD Studio 10.4 Version 27.0.38860.1461 

 

Delphi 10.4 and C++ Builder 10.4 Update 1

[TrevorS 3]

This fixes the problem 

 

RESTRequest.Client.FallbackCharsetEncoding := 'raw';