[Haskell-cafe] Help on simpleHttp in Network.HTTP.Conduit problem

[Alfredo Di Napoli]

Hi Stuart,
I was going to suggest the same as Roman, this is a "known problem" on
Windows. But the good news is that withSocketsDo is implemented as "id"
if you are on Unix, so you could still write multi platform programs
without worrying about platforms and preprocessor flags.

Hope this helps!

Alfredo


On 21 January 2014 23:14, Roman Cheplyaka <roma at ro-che.info> wrote:

> It looks like you haven't initialized the networking subsystem. See
> http://hackage.haskell.org/package/network-2.4.2.2/docs/Network.html#g:2
>
> * Stuart Mills <stuartallenmills at gmail.com> [2014-01-21 14:39:36-0800]
> > Here is the source by the way:
> > {-# LANGUAGE OverloadedStrings #-}
> >
> > import Network.HTTP.Conduit (simpleHttp)
> > import qualified Data.Text as T
> > import Text.HTML.DOM (parseLBS)
> > import Text.XML.Cursor (Cursor, attributeIs, content, element,
> > fromDocument, child,
> >                         ($//), (&|), (&//), (>=>))
> >
> > -- The URL we're going to search
> > url = "http://www.bing.com/search?q=school+of+haskell"
> >
> > -- The data we're going to search for
> > findNodes :: Cursor -> [Cursor]
> > findNodes = element "span" >=> attributeIs "id" "count" >=> child
> >
> > -- Extract the data from each node in turn
> > extractData = T.concat . content
> >
> > -- Process the list of data elements
> > processData =  putStrLn . T.unpack . T.concat
> >
> > cursorFor :: String -> IO Cursor
> > cursorFor u = do
> >      page <- simpleHttp u
> >      return $ fromDocument $ parseLBS page
> >
> > -- test
> > main = do
> >      cursor <- cursorFor url
> >      processData $ cursor $// findNodes &| extractData
> >
> >
> > On Tuesday, January 21, 2014 2:10:19 PM UTC-8, Stuart Mills wrote:
> > >
> > > I copied and pasted some html parsing demo source from FP School.
> > >
> > > While the code works on the FP demo site (in the IDE), I get the
> following
> > > error on my Windows 7 64 bit:
> > >
> > > InternalIOException getAddrInfo: does not exist (error 10093).
> > >
> > > Thanks
> > >
> > >
> > >
>
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