blob: 56fa6132b8fe680395f7efa7d0facfe788f08052 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
module Main (main) where
import Control.Concurrent (forkFinally)
import qualified Control.Exception as E
import Control.Monad (unless, forever, void)
import qualified Data.ByteString as S
import qualified Data.Text as T
import Data.Text.Encoding (decodeUtf8, encodeUtf8)
import Network.Socket
import Network.Socket.ByteString (recv, sendAll)
import Web.Utils
import Web.Response
import Web.Router
import Routes
main :: IO ()
main = do
print "Server launched"
runTCPServer Nothing "3000" talk
where
talk s = do
msg <- recv s 1024
-- print msg
print "Got request"
unless (S.null msg) $ do
let (request, _, _) = parseHttp $ decodeUtf8 msg
response <- resolve routesTable $ request
sendAll s $ encodeUtf8 (formResponse response)
-- from the "network-run" package.
runTCPServer :: Maybe HostName -> ServiceName -> (Socket -> IO a) -> IO a
runTCPServer mhost port server = withSocketsDo $ do
addr <- resolve
E.bracket (open addr) close loop
where
resolve = do
let hints = defaultHints {
addrFlags = [AI_PASSIVE]
, addrSocketType = Stream
}
head <$> getAddrInfo (Just hints) mhost (Just port)
open addr = do
sock <- socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr)
setSocketOption sock ReuseAddr 1
withFdSocket sock $ setCloseOnExecIfNeeded
bind sock $ addrAddress addr
listen sock 1024
return sock
loop sock = forever $ do
(conn, _peer) <- accept sock
void $ forkFinally (server conn) (const $ gracefulClose conn 5000)
|
