[erlang-questions] Strange Socket Behaviour Was:Parents always take children with them?

[Matthias Lang]

Ludovic Coquelle writes:

 > ... so the normal behavior is that gen_recv doesn't block, which is probably
 > intended since you request 0 byte with infinity timeout

More precisely, gen_tcp:recv(P, 0) will block until at least one octet
of data is available, with the options Andrew is using.

But yes, Andrew's problem is as you diagnosed:  his "critical" line of
code will crash the process because the second argument to io:format
must be a list.

Matthias