On Tue, Feb 7, 2012 at 10:28 PM, Myles C. Maxfield
I have been looking around at possibly making a Browser module for Network.HTTP.Conduit on top of Control.Monad.State. I came across this roadbump:
In order to implement redirection following, client code must call 'http' with a redirection count of 0. If there is a redirect, 'http' will throw an exception. In order to catch this exception and continue on with the redirection chain, the 'catch' function must be called. The problem is that the 'catch' function has a type of (catch :: Exception e => IO a -> (e -> IO a) -> IO a) which means that it can only be used in the IO monad. A call to 'http' inside the first argument of 'catch' must be wrapped in a 'runResourceT'
Does this help? http://hackage.haskell.org/packages/archive/lifted-base/0.1.0.3/doc/html/Con... It should handle part of your problem, at least. Antoine