Here are the data structures with brief descriptions:

Cobex_ctrans_t	Function definition for custom transports
Cobex_headerdata_t	OBEX object tag information
Cobex_interface_t	Generic OBEX interface information
Cobex_irda_intf_t	IrDA-specific OBEX interface information
Cobex_usb_intf_service_t	USB-specific OBEX service information provided by optional Service Identification Functional Descriptor (CDC WMC specification section 6.5.2.5)
Cobex_usb_intf_t	USB-specific OBEX interface information