Handling timeout

[winterland1989]

I'd like to have a discussion on how to handle connection timeout scenarios, currently we do nothing about it, so user have to use timeout themselves. One may argue that it's the right thing to do in a library: to leave possible recovery strategies to user. But i'm not sure about this(actually i'm not sure on how to handle this in haskell code in general).

Anyway, here's what i proposed: Add timeout to ConnectInfo(default to 30s), and once timeout happend, we throw a NetworkException and close the connection instead of letting user decide what to do.

Is there any objection on this? Keep in mind that timeout on windows is broken so it may introduce more trouble than it seems.