"Packet integrity" usually means something different than how you're using it: generally, it refers to whether the data in the packet arrives unchanged. By thi

"Packet integrity" usually means something different than how you're using it: generally, it refers to whether the data in the packet arrives unchanged. By this definition, UDP has identical packet integrity as TCP (they use the same checksum, albeit optionally in the case of UDP), assuming the packet gets there at all. What UDP doesn't guarantee is ordering and arrival of packets. Usually "channel reliability/integrity" or simply "reliability" is used to refer to this.