After studying TCP/UDP difference all week, I just can’t decide which to use. I have to send a large amount of constant sensor data, while at the same time sending important data that can’t be lost. This made a perfect split for me to use both, then I read a paper (http://www.isoc.org/INET97/proceedings/F3/F3_1.HTM) that says using both causes packet/performance loss in the other. Is there any issue presented if I allow the user to choose which protocol to use (if I program both server side) instead of choosing myself? Are there any disadvantages to this?
The only other solution I came up with is to use UDP, and if there seems to be too great of loss of packets, switch to TCP (client-side).
The article you link goes into detailed analysis on some corner cases. This probably does not apply in your situation. I would ignore this unless your own performance tests start showing problems. Start with the simplest setup (I’m guessing TCP for bulk data transfer and UDP for non-reliable sensor data), test, measure, find bottlenecks, re-factor.