nitro is right, network friends could help, just be prepared to change your feed handler based on exchange message changes (announced in advance and tested before changes pushed to prod) as well as to handle a back up line if primary is down, there are not too many app teams out there who can do...
Just to understand what you need for feed handler to work, read UTP data feed spec (and similar feed specs)
http://www.nasdaqtrader.com/content/technicalsupport/specifications/utp/utdfspecification.pdf
Generate fake data from those specs in your data producer code multicast it and consume...