On Fri, Feb 5, 2010 at 5:51 PM, Chris Eidhof <ch...@eidhof.nl> wrote: > Approach 2: I installed the 'download-curl' package, and tried again. This > seems to fail on the following example: > >> import Network.Curl.Download >> >> main = do x <- openURI "http://haskell.org"; >> y <- openURI "http://haskell.org/hoogle"; >> return () > > If I put a print statement around the second line of the do-statement it > looks like openURI never returns. >
I think you're supposed to use withCurlDo: http://hackage.haskell.org/packages/archive/curl/latest/doc/html/Network-Curl.html#v%3AwithCurlDo with the curl library. Could be wrong about that, haven't tried it myself. > Approach 3: I used the simpleHTTP function from the HTTP package. This > crashed, after I dug a little deeper into the code, it threw an error on > calling the parseURI function (openFile: no such file exists). I installed > the latest network package and upgraded my HTTP package, and the parseURI > error went away. I felt like I was almost there, and tried the following: > >> simpleHTTP (getRequest "http://haskell.org";) > > This failed with just the text "Bus error". I searched the HTTPBis git > repository, but couldn't find the text "Bus error". I don't have a clue of > how to fix this. "Bus error" is a message generated by the operating system. On OS X, it can mean a null dereference, which is very unusual. I'm not sure how you'd debug it either - the most common cause when you're talking about C applications is programmer error, but Network.HTTP is specifically designed to be pure Haskell, and it's not easy to induce a null dereference from Haskell. > I'm a bit stuck here, I would love to help fix the errors, but don't know > what would be the best place to begin. If anyone can point me in the right > direction, I will try to patch at least one of these packages. I don't think anyone would blame you if you didn't manage it, none of those are particularly friendly errors. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
