the sound/video without interruption and losing a few bytes of data was much better
than waiting for re-transmission of the missing data.
Nowadays, network transmission speeds are considerably greater than they were
only a few years ago, meaning that UDP is now a feasible transport mechanism for
applications in which it would not once have been considered. In addition to this, it
is much easier for TCP packets to get through fi rewalls than it is for UDP packets to
do so, since Web administrators tend to allow TCP packets from remote port 80s to
pass through unchallenged. For these reasons, the choice of whether to use TCP or
UDP for speed-critical applications is not nearly as clear cut as it used to be.