What is the difference between read() and recv()?
From Andrew Gierth (email@example.com):
read() is equivalent to recv() with a flags parameter of 0. Other
values for the flags parameter change the behaviour of recv().
Similarly, write() is equivalent to send() with flags == 0.
It is unlikely that send()/recv() would be dropped; perhaps someone
with a copy of the POSIX drafts for socket calls can check...
Portability note: non-unix systems may not allow read()/write() on
sockets, but recv()/send() are usually ok. This is true on Windows and
OS/2, for example.