iOS Client not sending number of copies

[ChrisKays]

Hi Everyone,

Am developing a server app that talks to client and act as a printer. There are few elements i noticed when reading data that are sent from the client to my app. For instance, when i print a document with 1 copies i can see the data coming in as Application/PDF format and i get the number of copies as 1(which is right) and also many other element such as the sides, color etc... BUT when i do the same thing with number of copies greater than 1 the data are converted in image/urf and i don't get the number of copies.
Can someone please help me understand why is iOS client converting the data to image/urf, what is image/urf and why is the client not sending the number of copies when i print multiple copies of a single document.