[web-devel] [BUG] in WAI definition

[Manlio Perillo]

Johan Tibell ha scritto:
> Hi Manlio,
> 
> Thanks for reporting the bugs and sorry for the late reply.
> 
> On Sun, Feb 8, 2009 at 5:21 PM, Manlio Perillo <manlio_perillo at libero.it> wrote:
>> I'm trying to compile the example WAI application, as defined in
>> http://www.haskell.org/haskellwiki/WebApplicationInterface
>>
>> However there are several bugs.
> 
> I haven't given the WAI specification much attention since I first
> wrote it. 

I have noted that there is a WAI module in your Hyena web application 
server.

http://github.com/tibbe/hyena


I think that, instead, WAI should be defined in a separate package, that 
should contain:

1) WAI specification
2) WAI data types (hyena.Network.Wai.hs)
3) Some utility functions (see Python wsgiref module)
4) Standard implementation for CGI

Since Haskell is not Python, it is necessary that both gateways and 
applpications use the same data types.


Then, in separate packages, it is possible to implement support for 
SCGI, FastCGI and a simple HTTP 1.0 server (a full HTTP 1.1 server is 
not a priority, IMHO).

IMHO, the WAI (or a separate) package should also contain support for 
parsing HTTP headers (to be used my both servers, gateways and 
applications).
If there is a thing I hate, is when every project reinvent the wheel.


One last note.
I have some doubts about the name WAI.
It means "Web application interface", but I think that the word 
"Gateway" should appear in it.

Something like:
HSGI ("Haskell Server Gataway Interface", that can also be read as "HTTP 
Server Gataway Interface"), or simply HGI ("Haskell Gateway Interface").



Manlio