Re: [Haskell] New version of the HTTP module

Graham Klyne Tue, 16 Mar 2004 09:27:03 -0800

I'm trying to check this out with some software that uses a previous version (HXml toolbox), and I get the following error from Hugs: [[ Reading file "..\http\Browser.hs": Type checking ERROR "..\http\Browser.hs":865 - Type error in application *** Expression : ioAction $ openTCP hst *** Term : ioAction *** Type : IO a -> BrowserAction a *** Does not match : (Int -> IO Connection) -> BrowserAction a ]]

It appears that the signature for "openTCP" has changed...

Previous version (HTTP.hs):
[[
openTCP :: String -> IO Connection
openTCP uri =
]]
-- http://homepages.paradise.net.nz/warrickg/haskell/http/HTTP.hs

Latest version (HTTP.hs):
[[
openTCP :: String -> Int -> IO Connection
openTCP uri port =
]]
-- http://www.dtek.chalmers.se/~d00bring/haskell-xml-rpc/HTTP.hs

But this is referenced by the copy of Browser indicated from your web page:
[[
                             ; c <- ioAction $ openTCP hst
]]
http://homepages.paradise.net.nz/warrickg/haskell/http/Browser.hs

I'm guessing that you also have a modified version of Browser.hs?

#g
--

At 00:16 16/03/04 +0100, Bjorn Bringert wrote:

The Haskell HTTP client implementation available from [1] seems to be without a maintainer (if anyone knows how to reach Warrick Gray, who wrote it, let me know).

I include a modified version of this module in the XML-RPC library [2]. Changes from the original module include:
    * made it Hugs compatible
    * disabled 100-continue transfers as they caused POST requests to
      HTTP/1.0 servers to stall
    * called it Network.HTTP instead of HTTP
    * added support for URIs with a port number
    * added a simple toggle for HTTP traffic logging
The modified HTTP module is available from:

http://www.dtek.chalmers.se/~d00bring/haskell-xml-rpc/http.html

In line with Graham Klyne's suggestion [3] that a consistent version of this module be brought into some "community space", it will probably move to the haskell-libs project at SourceForge in the not too distant future.

Yours truly,

Bjorn Bringert

[1] http://homepages.paradise.net.nz/warrickg/haskell/http/

[2] http://www.dtek.chalmers.se/~d00bring/haskell-xml-rpc/

[3] http://www.haskell.org/pipermail/libraries/2004-February/001693.html
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------------
Graham Klyne
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http://www.ninebynine.org/#Contact

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Re: [Haskell] New version of the HTTP module

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