Error when using document data for IPP send Document Request

Copper Contributor

After Register Printer with Universal Print Service, I build a IPP Proxy App as a connector to connect Output Device with Infrastructure Printer. 
After implement Fetch Document IPP Operation , UP Services response document data. But if I use this data to Send-Document Operation to Output  Device. This data is not type Buffer. It return type string.
I see Graph API have a api return same data. It shown below 

1 Reply

Hello @hungnq39 the print payload is binary data of the remaining HTTP payload that immediately follows the document attributes.    
Please see section 5.5.2 of the IPP INFRA spec: