cupsPrintFile() has no streaming equivalent?

[mike]

from what i can tell from both the API documentation as well as the source of cups/util.c and cups/request.c, cups provides no method of streaming a file to the print server.  i hope that i am merely overlooking something and the cups API is not crippled in this way.

if i can pipe to lpr, i should be able to able to stream content to cups for printing.

thanks in advance,

-mike