Re: [Haskell-cafe] [ANNOUNCE] First Public Release of the Snap Framework

Congratulations on the release. I was interested in seeing how this would work as a WAI handler, and came across some questions: * I noticed that the Method datatype is restricted to a set of specific methods. Seeing as the list of methods can be expanded[1], why was this chosen? * The CIByteString datatype provides no way of accessing directly the lower-case version of the bytestring, or of setting it. Seeing as WAI already lower-cases the headers (following your suggestion btw) it would be more efficient to only do this once. Would you consider exposing the constructor? * For simplicity at the moment, I decided to use the getRequestBody function, but it seems to be returning an empty result. Is there a known gotcha here? Overall, writing the WAI wrapper is pretty straight-forward. The main problem is that the WAI request body does not require an inversion of control approach, while the Snap version does; some usage of lazy I/O here could solve the problem, though that's obviously sub-optimal. Also, it seems a little unclear whether the writeBS et al functions store the body in memory before returning the result, though the documentation implies it. Could you provide some clarifications? Good work, Michael [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html On Sat, May 22, 2010 at 8:25 AM, Gregory Collins wrote:

Hello all,

To coincide with Hac Phi 2010 (http://www.haskell.org/haskellwiki/Hac_%CF%86), the Snap team is happy to announce the first public release of the Snap Framework, a simple and fast Haskell web programming server and library for unix systems. For installation instructions, documentation, and more information, see our website at http://snapframework.com/.

Snap is well-documented and has a test suite with a high level of code coverage, but it is early-stage software with still-evolving interfaces. Snap is therefore most likely to be of interest to early adopters and potential contributors.

Snap is BSD-licensed and currently only runs on Unix platforms; it has been developed and tested on Linux and Mac OSX Snow Leopard.

Snap Features:

* A simple and clean monad for web programming, similar to happstack's but simpler.

* A *fast* HTTP server library with an optional high-concurrency backend (using libev).

* An XML-based templating system for generating xhtml that allows you to bind Haskell functionality to XML tags in your templates.

* Some useful utilities for web handlers, including gzip compression and fileServe.

* Iteratee-based I/O, allowing composable streaming in O(1) space without any of the unpredictable consequences of lazy I/O.

If you have questions or comments, please contact us on our mailing list (http://mailman-mail5.webfaction.com/listinfo/snap) or in the #snapframework channel on the freenode IRC network.

Cheers, G -- Gregory Collins _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe