* Sprinkle const.
* Use EXIT_FAILURE instead of 1.
* Use err(), errx().
* Use calloc() instead of malloc()+memset().
* timedc:
* Non-terminated hostnames or unknown tsp_type could
cause a crash due to out-of-bounds reads in msite().
* Check the received packet size.
* Merged duplicated code into functions.
* Moved variables into the relevant scopes.
* Use connect() so that only the receiver can reply,
send()/recv() can be used and rejected packets
are immediately noticed by recv() instead of causing
timeouts.
* Updated manpage.
