+{-# LANGUAGE
+ CPP
+ , UnicodeSyntax
+ #-}
-- |The entry point of Lucu httpd.
module Network.HTTP.Lucu.Httpd
- ( FallbackHandler
- , runHttpd
+ ( runHttpd
)
where
-
-import Control.Concurrent
-import Control.Exception
-import Control.Monad
-import Network.BSD
-import Network.Socket
-import Network.HTTP.Lucu.Config
-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 Control.Concurrent
+import Control.Exception
+import Control.Monad
+import Control.Monad.Unicode
+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.ResponseWriter
+import Network.HTTP.Lucu.SocketLike as SL
+import Prelude.Unicode
-- |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 @'System.Posix.Signals.installHandler'
--- 'System.Posix.Signals.sigPIPE' 'System.Posix.Signals.Ignore'
--- 'Prelude.Nothing'@. This can hardly cause a problem but it may do.
+-- 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.
--
-- Example:
--
--- > module Main where
--- > import Network.HTTP.Lucu
--- >
--- > main :: IO ()
--- > main = let config = defaultConfig
--- > resources = mkResTree [ ([], helloWorld) ]
--- > in
--- > runHttpd config resourcees []
--- >
--- > helloWorld :: ResourceDef
--- > helloWorld = ResourceDef {
--- > resUsesNativeThread = False
--- > , resIsGreedy = False
--- > , resGet
--- > = Just $ do setContentType $ read "text/plain"
--- > output "Hello, world!"
--- > , resHead = Nothing
--- > , resPost = Nothing
--- > , resPut = Nothing
--- > , resDelete = Nothing
--- > }
-runHttpd :: Config -> ResTree -> [FallbackHandler] -> IO ()
-runHttpd cnf tree fbs
- = withSocketsDo $
- do _ <- installHandler sigPIPE Ignore Nothing
-
- -- FIXME: TERRIBLE CODE. NEED MAJOR REWRITE.
- case cnfSSLConfig cnf of
- Nothing
- -> return ()
- Just scnf
- -> do case cnfServerV4Addr cnf of
- Nothing
- -> return ()
- Just v4addr
- -> do so <- listenOn AF_INET v4addr (sslServerPort scnf)
- p <- socketPort so
- -- FIXME: Don't throw away the thread
- -- ID as we can't kill it later
- -- then. [1]
- _ <- forkIO $ httpLoop p (sslContext scnf, so)
- return ()
-
- case cnfServerV6Addr cnf of
- Nothing
- -> return ()
- Just v6addr
- -> do so <- listenOn AF_INET6 v6addr (sslServerPort scnf)
- p <- socketPort so
- -- FIXME: [1]
- _ <- forkIO $ httpLoop p (sslContext scnf, so)
- return ()
-
- case cnfServerV4Addr cnf of
- Nothing
- -> return ()
- Just v4addr
- -> do so <- listenOn AF_INET v4addr (cnfServerPort cnf)
- p <- socketPort so
- -- FIXME: [1]
- _ <- forkIO $ httpLoop p so
- return ()
-
- case cnfServerV6Addr cnf of
- Nothing
- -> return ()
- Just v6addr
- -> do so <- listenOn AF_INET6 v6addr (cnfServerPort cnf)
- p <- socketPort so
- -- FIXME: [1]
- _ <- forkIO $ httpLoop p so
- return ()
-
+-- @
+-- {-\# 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 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)
+ )
+ , do scnf ← cnfSSLConfig cnf
+ addr ← cnfServerV6Addr cnf
+ return ( do so ← listenOn AF_INET6 addr (sslServerPort scnf)
+ launchListener (sslContext scnf, so)
+ )
+#endif
+ ]
+ sequence_ launchers
waitForever
where
- listenOn :: Family -> HostName -> ServiceName -> IO Socket
+ launchListener ∷ SocketLike s ⇒ s → IO ()
+ launchListener so
+ = do p ← SL.socketPort so
+ -- FIXME: Don't throw away the thread ID as we can't
+ -- kill it later then.
+ void ∘ forkIO $ httpLoop p so
+
+ listenOn ∷ Family → HostName → ServiceName → IO Socket
listenOn fam host srv
- = do proto <- getProtocolNumber "tcp"
+ = do proto ← getProtocolNumber "tcp"
let hints = defaultHints {
addrFlags = [AI_PASSIVE]
, addrFamily = fam
, addrSocketType = Stream
, addrProtocol = proto
}
- addrs <- getAddrInfo (Just hints) (Just host) (Just srv)
+ addrs ← getAddrInfo (Just hints) (Just host) (Just srv)
let addr = head addrs
bracketOnError
- (socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr))
- (sClose)
- (\ sock ->
+ (socket (addrFamily addr)
+ (addrSocketType addr)
+ (addrProtocol addr))
+ sClose
+ (\ sock →
do setSocketOption sock ReuseAddr 1
bindSocket sock (addrAddress addr)
listen sock maxListenQueue
return sock
)
- httpLoop :: SocketLike s => PortNumber -> s -> IO ()
+ 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
- _writerTID <- forkIO $ responseWriter cnf h tQueue readerTID
+ = do (h, addr) ← SL.accept so
+ 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 ∷ IO ()
+ waitForever = forever $ threadDelay 1000000
projects / Lucu.git / blobdiff