hlint

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

diff --git a/Network/HTTP/Lucu/Httpd.hs b/Network/HTTP/Lucu/Httpd.hs
index 2dca5120d8c6e0e21f40b88a03959d4017c848d4..a5f974978a4c6e5ccc4baad408d61bd5ce69f661 100644 (file)
--- a/Network/HTTP/Lucu/Httpd.hs
+++ b/Network/HTTP/Lucu/Httpd.hs
@@ -1,10 +1,10 @@
 {-# LANGUAGE
-    UnicodeSyntax
+    CPP
+  , UnicodeSyntax
   #-}
 -- |The entry point of Lucu httpd.
 module Network.HTTP.Lucu.Httpd
-    ( FallbackHandler
-    , runHttpd
+    ( runHttpd
     )
     where
 import Control.Concurrent
@@ -15,46 +15,53 @@ import Data.Maybe
 import Network.BSD
 import Network.Socket
 import Network.HTTP.Lucu.Config
+import Network.HTTP.Lucu.Dispatcher
 import Network.HTTP.Lucu.Interaction
 import Network.HTTP.Lucu.RequestReader
-import Network.HTTP.Lucu.Resource.Tree
 import Network.HTTP.Lucu.ResponseWriter
 import Network.HTTP.Lucu.SocketLike as SL
-import System.Posix.Signals
+import Prelude.Unicode
 
 -- |This is the entry point of Lucu httpd. It listens to a socket and
 -- waits for clients. 'runHttpd' never stops by itself so the only way
 -- to stop it is to raise an exception in the thread running it.
 --
--- Note that 'runHttpd' automatically makes SIGPIPE be ignored by
--- calling @'installHandler' 'sigPIPE' 'Ignore' 'Nothing'@. This can
--- hardly cause a problem though.
---
 -- Example:
 --
--- > {-# LANGUAGE OverloadedStrings #-}
--- > module Main where
--- > import Network.HTTP.Lucu
--- > 
--- > main :: IO ()
--- > main = let config    = defaultConfig
--- >            resources = mkResTree [ ([], helloWorld) ]
--- >        in
--- >          runHttpd config resourcees []
--- >
--- > helloWorld :: ResourceDef
--- > helloWorld = emptyResource {
--- >                resGet
--- >                  = Just $ do setContentType $ mkMIMEType "text" "plain"
--- >                              putChunk "Hello, world!"
--- >              }
-runHttpd ∷ Config → ResTree → [FallbackHandler] → IO ()
-runHttpd cnf tree fbs
-    = withSocketsDo $
-      do void $ installHandler sigPIPE Ignore Nothing
-         let launchers
+-- @
+--   {-\# LANGUAGE OverloadedStrings \#-}
+--   {-\# LANGUAGE QuasiQuotes \#-}
+--   module Main where
+--   import qualified "Data.Collections" as C
+--   import "Network"
+--   import "Network.HTTP.Lucu"
+--
+--   main :: 'IO' ()
+--   main = let config = 'defaultConfig'
+--              tree   :: 'ResourceTree'
+--              tree   = C.fromList [ ([], 'nonGreedy' helloWorld) ]
+--          in
+--            'Network.withSocketsDo' '.' 'runHttpd' config '$' 'resourceMap' tree
+--
+--   helloWorld :: 'Network.HTTP.Lucu.Resource'
+--   helloWorld = C.fromList
+--                [ ( 'Network.HTTP.Lucu.GET'
+--                  , do 'Network.HTTP.Lucu.setContentType' ['Network.HTTP.Lucu.mimeType'| text/plain |]
+--                       'Network.HTTP.Lucu.putChunk' \"Hello, world!\"
+--                }
+-- @
+runHttpd ∷ HostMapper α ⇒ Config → α → IO ()
+runHttpd cnf hm
+    = do let launchers
                  = catMaybes
-                   [ do scnf ← cnfSSLConfig    cnf
+                   [ do addr ← cnfServerV4Addr cnf
+                        return ( launchListener =≪ listenOn AF_INET addr (cnfServerPort cnf)
+                               )
+                   , do addr ← cnfServerV6Addr cnf
+                        return ( launchListener =≪ listenOn AF_INET6 addr (cnfServerPort cnf)
+                               )
+#if defined(HAVE_SSL)
+                   , do scnf ← cnfSSLConfig    cnf
                         addr ← cnfServerV4Addr cnf
                         return ( do so ← listenOn AF_INET addr (sslServerPort scnf)
                                     launchListener (sslContext scnf, so)
@@ -64,12 +71,7 @@ runHttpd cnf tree fbs
                         return ( do so ← listenOn AF_INET6 addr (sslServerPort scnf)
                                     launchListener (sslContext scnf, so)
                                )
-                   , do addr ← cnfServerV4Addr cnf
-                        return ( launchListener =≪ listenOn AF_INET addr (cnfServerPort cnf)
-                               )
-                   , do addr ← cnfServerV6Addr cnf
-                        return ( launchListener =≪ listenOn AF_INET6 addr (cnfServerPort cnf)
-                               )
+#endif
                    ]
          sequence_ launchers
          waitForever
@@ -78,8 +80,8 @@ runHttpd cnf tree fbs
       launchListener so
           = do p ← SL.socketPort so
                -- FIXME: Don't throw away the thread ID as we can't
-               -- kill it later then. [1]
-               void $ forkIO $ httpLoop p so
+               -- kill it later then.
+               void ∘ forkIO $ httpLoop p so
 
       listenOn ∷ Family → HostName → ServiceName → IO Socket
       listenOn fam host srv
@@ -93,7 +95,9 @@ runHttpd cnf tree fbs
                addrs ← getAddrInfo (Just hints) (Just host) (Just srv)
                let addr = head addrs
                bracketOnError
-                   (socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr))
+                   (socket (addrFamily     addr)
+                           (addrSocketType addr)
+                           (addrProtocol   addr))
                    sClose
                    (\ sock →
                         do setSocketOption sock ReuseAddr 1
@@ -105,10 +109,10 @@ runHttpd cnf tree fbs
       httpLoop ∷ SocketLike s ⇒ PortNumber → s → IO ()
       httpLoop port so
           = do (h, addr)  ← SL.accept so
-               tQueue     ← newInteractionQueue
-               readerTID  ← forkIO $ requestReader cnf tree fbs h port addr tQueue
+               tQueue     ← mkInteractionQueue
+               readerTID  ← forkIO $ requestReader cnf hm h port addr tQueue
                _writerTID ← forkIO $ responseWriter cnf h tQueue readerTID
                httpLoop port so
 
       waitForever ∷ IO ()
-      waitForever = forever (threadDelay 1000000)
+      waitForever = forever $ threadDelay 1000000