From: Brian Candler <b.candler@...>
Date: 2009-12-09T22:37:55+09:00
Subject: Re: Newbie question: what exceptions are thrown by FTP class

Simon Morgan wrote:
>> But *why* would you be calling nlst on a connection which isn't open? 
>> Isn't that a programmer error, and therefore you shouldn't be catching 
>> the exception at all?
>> 
> 
> If the network connection dies between opening and calling nlst(), for 
> example.

OK, I see.

In that case you would probably get something like an Errno::EPIPE 
(writing to a socket where the read end is closed).

I don't think you really want to enumerate all the possibilities though. 
Just rescue SystemCallError which is the parent of all the exceptions in 
module Errno.
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