From: Geometric Patterns <geometric.patterns@...>
Date: 2010-08-29T06:24:12+09:00
Subject: Problems using gets() on a socket


Hi,

I have built a telnet "chat server" using TCPserver and a select
statement.

If a client exits "cleanly" (such as by closing the shell in which
telnet is running), I can recognize the socket as being terminated using
sock.eof? and everything's fine.

But if a client does wacky stuff like suspend their telnet process with
ctrl+z, then my server hangs at this line:

s = sock.gets()

(where s is a string and sock is the socket of the client)

I tried using s = sock.read and the server could not get past that line,
even for successfully connected clients.  I tried using s =
sock.recvfrom(500)[0] but when the client hits that line I get the error
"in `recvfrom': recv for buffered IO (IOError)".

Any help you can provide would be gratefully received!

Very best,

 - Andrew
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