Does #waitForDataUntil: applies to UDP sockets?  I'm having a hard 
time telling which methods apply to UDP sockets, TCP sockets, or 
both.
 
 
I'm trying to confine myself to the methods in the category 
"datagrams".  But the examples (in the class methods) don't seem to 
bother (using methods in "datagram"). Why?
  
  
---John