Implemented fallback handler.

[Lucu.git] / Network / HTTP / Lucu / Httpd.hs

diff --git a/Network/HTTP/Lucu/Httpd.hs b/Network/HTTP/Lucu/Httpd.hs
index b8e1845dd32e41edfb966dbc6f460ba936948b90..2036412dd10d839831130ca44bb858d9e2c1757e 100644 (file)
--- a/Network/HTTP/Lucu/Httpd.hs
+++ b/Network/HTTP/Lucu/Httpd.hs
@@ -1,6 +1,7 @@
--- | The entry point of Lucu httpd.
+-- |The entry point of Lucu httpd.
 module Network.HTTP.Lucu.Httpd
-    ( runHttpd
+    ( FallbackHandler
+    , runHttpd
     )
     where
 
@@ -15,14 +16,15 @@ import           Network.HTTP.Lucu.ResponseWriter
 import           System.IO
 import           System.Posix.Signals
 
--- | This is the entry point of Lucu httpd. It listens to a socket and
+-- |This is the entry point of Lucu httpd. It listens to a socket and
 -- waits for clients. Computation of 'runHttpd' never stops by itself
 -- so the only way to stop it is to raise an exception in the thread
 -- computing it.
 --
 -- Note that 'runHttpd' automatically makes SIGPIPE be ignored by
--- computing @installHandler sigPIPE Ignore Nothing@. This can hardly
--- cause a problem but it may do.
+-- computing @'System.Posix.Signals.installHandler'
+-- 'System.Posix.Signals.sigPIPE' 'System.Posix.Signals.Ignore'
+-- 'Prelude.Nothing'@. This can hardly cause a problem but it may do.
 --
 -- Example:
 --
@@ -33,7 +35,7 @@ import           System.Posix.Signals
 -- > main = let config    = defaultConfig
 -- >            resources = mkResTree [ ([], helloWorld) ]
 -- >        in
--- >          runHttpd config resourcees
+-- >          runHttpd config resourcees []
 -- >
 -- > helloWorld :: ResourceDef
 -- > helloWorld = ResourceDef {
@@ -47,8 +49,8 @@ import           System.Posix.Signals
 -- >              , resPut    = Nothing
 -- >              , resDelete = Nothing
 -- >              }
-runHttpd :: Config -> ResTree -> IO ()
-runHttpd cnf tree
+runHttpd :: Config -> ResTree -> [FallbackHandler] -> IO ()
+runHttpd cnf tree fbs
     = withSocketsDo $
       do installHandler sigPIPE Ignore Nothing
          so <- listenOn (cnfServerPort cnf)
@@ -60,7 +62,7 @@ runHttpd cnf tree
           -- リモートのIPを逆引きするので、使へない。
           = do (h, addr) <- accept' so
                tQueue    <- newInteractionQueue
-               readerTID <- forkIO $ requestReader cnf tree h addr tQueue
+               readerTID <- forkIO $ requestReader cnf tree fbs h addr tQueue
                writerTID <- forkIO $ responseWriter cnf h tQueue readerTID
                loop so