XML File Signature

weneed

I need to send an XML file created with XML Port object to an external web service. Webservice verify file signature to check real file format.
It expects to receive an xml file with the first 5 bytes set like this:

0x3C, 0x3F, 0x78, 0x6D, 0x6C, 0x20

but file created from BC contain file text signature: ef bb bf or ff fe 3c 20 3f 20

This is wikipedia link
So why BC does it create xml files without the correct signature?

ftornero

Hello @weneed,

In the UTF-8 BOM case you would need to remove this three chars (ef bb bf).

Regards.

ftornero

Hello @weneed,

ef bb bf

is that the file is UTF-8 BOM https://en.wikipedia.org/wiki/Byte_order_mark

And

ff fe

is that the file is UTF-16.

How do you create the XML file ??

Regards.

vaprog

That external web service does not adhere to the xml specification. See here: https://w3.org/TR/REC-xml/#sec-guessing

Neither does Microsoft, as it is recommended to not use a BOM for XML.

When I last checked, I was unable to write an xml file without BOM using an Unicode encoding and tools available in Dynamics NAV / BC.

You will have to post-process your file (or stream) in order to remove the BOM.

weneed

I' using XMLport with Format property set to XML

ftornero

Hello @weneed,

In the UTF-8 BOM case you would need to remove this three chars (ef bb bf).

Regards.

weneed

Thanks I hadn't noticed that