replyAsBinary(header: String;
message: Binary): String;
The replyAsBinary method of the JadeHTMLClass class returns the Binary message contained in the message parameter to the Web browser without modification. Use this method to send a binary reply without UTF-8 encoding to a Web message.
The message uses the String value in the header parameter as the HTTP headers. The headers are encoded with UTF-8, as is expected for HTTP headers.
As this method is designed for use in the generateHTMLString method that returns an HTML string result, the replyAsBinary method returns a string. However, as the reply has already been sent when the result is returned, the replyAsBinary method returns a null string ("").
The following example shows a reimplemented generateHTMLString method using the replyAsBinary method to download a PDF file to a browser.
vars
file : File;
message : Binary;
header : String;
begin
create file transient;
file.fileName := "C:\documentation\JadLoad.pdf";
file.kind := File.Kind_Binary;
message := file.readBinary(file.fileLength);
header := 'HTTP/1.1 200 OK' & CrLf &
'Content-Type: application/pdf' & CrLf &
'Content-Disposition: attachment;filename=myfile.pdf' & CrLf &
'Content-Length: ' & message.length.String & CrLf & CrLf;
return replyAsBinary(header, message);
epilog
delete file;
end;