[Haskell-cafe] Application Level server state in Haskell Web server
pieter at laeremans.org
Sat Feb 17 21:09:06 EST 2007
I'm trying to write a simple module for the haskell web server (hws-
And I would like to write a simple module that maintains some kind of
state for a session.
But I'm I write I cannot do this in pure Haskell ? Without adopting
the sources of the Haskell web server ?
I'll examplify to make it more concrete :
The requestHandler function a module has to implement has this
requestHandler :: ServerState -> ServerRequest -> IO (Maybe Response)
Let 's assume I have this implementation
requestHandler st _ = return $ Just $ mkRequest
where mkRequest =
okResponse (serverConfig st) mkBody hs True
mkBody = HereItIs " This is a test"
hs = mkHeaders [contentTypeHeader "text/html"]
And I would like the response to include, for example, a number
indicating the number of calls that has been handled by the module.
I would concider using an Mvar but I can't "remember" the mvar
Am I right to assume that the interface of the requestHandler method
has to be adapted ? Or that serverstate has to be adopted so that it
can act as a datastore ?
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