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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE OverloadedStrings #-}
module Test.Common.TestHandler (testHandler) where
import Blaze.ByteString.Builder
import Control.Concurrent (threadDelay)
import Control.Monad
import Control.Monad.Trans
import qualified Data.ByteString.Char8 as S
import qualified Data.ByteString.Lazy.Char8 as L
import Data.List
import qualified Data.Map as Map
import Data.Maybe
import Data.Monoid
import Snap.Core
import Snap.Internal.Debug
import Snap.Iteratee hiding (Enumerator)
import qualified Snap.Iteratee as I
import Snap.Util.FileServe
import Snap.Util.FileUploads
import Snap.Util.GZip
import System.Directory
import Test.Common.Rot13 (rot13)
------------------------------------------------------------------------------
-- timeout handling
------------------------------------------------------------------------------
timeoutTickleHandler :: Snap ()
timeoutTickleHandler = do
noCompression -- FIXME: remove this when zlib-bindings and
-- zlib-enumerator support gzip stream flushing
modifyResponse $ setResponseBody (trickleOutput 10)
. setContentType "text/plain"
. setBufferingMode False
setTimeout 2
badTimeoutTickleHandler :: Snap ()
badTimeoutTickleHandler = do
noCompression -- FIXME: remove this when zlib-bindings and
-- zlib-enumerator support gzip stream flushing
modifyResponse $ setResponseBody (trickleOutput 10)
. setContentType "text/plain"
setTimeout 2
trickleOutput :: Int -> Enumerator Builder IO a
trickleOutput n = concatEnums $ dots `interleave` delays
where
enumOne i = do
debug "enumOne: .\\n"
enumList 1 [fromByteString ".\n"] i
delay st = do
debug "delay 1s"
liftIO $ threadDelay 1000000
returnI st
interleave x0 y0 = (go id x0 y0) []
where
go !dl [] ys = dl . (++ys)
go !dl xs [] = dl . (++xs)
go !dl (x:xs) (y:ys) = go (dl . (x:) . (y:)) xs ys
dots = replicate n enumOne
delays = replicate n delay
------------------------------------------------------------------------------
pongHandler :: Snap ()
pongHandler = modifyResponse $
setResponseBody (enumBuilder $ fromByteString "PONG") .
setContentType "text/plain" .
setContentLength 4
echoUriHandler :: Snap ()
echoUriHandler = do
req <- getRequest
writeBS $ rqURI req
echoHandler :: Snap ()
echoHandler = transformRequestBody returnI
rot13Handler :: Snap ()
rot13Handler = transformRequestBody f
where
f origStep = do
mbX <- I.head
maybe (enumEOF origStep)
(feedStep origStep)
mbX
feedStep origStep b = do
let x = toByteString b
let e = enumBuilder $ fromByteString $ rot13 x
step <- lift $ runIteratee $ e origStep
f step
bigResponseHandler :: Snap ()
bigResponseHandler = do
let sz = 4000000
let s = L.take sz $ L.cycle $ L.fromChunks [S.replicate 400000 '.']
modifyResponse $ setContentLength sz
writeLBS s
responseHandler :: Snap ()
responseHandler = do
!code <- liftM (read . S.unpack . fromMaybe "503") $ getParam "code"
modifyResponse $ setResponseCode code
writeBS $ S.pack $ show code
uploadForm :: Snap ()
uploadForm = do
modifyResponse $ setContentType "text/html"
writeBS form
where
form = S.concat [ "<html><head><title>Upload a file</title></head><body>\n"
, "<p>Upload some <code>text/plain</code> files:</p>\n"
, "<form method='post' "
, "enctype='multipart/form-data' "
, "action='/upload/handle'>\n"
, "<input type='file' "
, "accept='text/plain' "
, "multiple='true' "
, "name='file'></input>\n"
, "<input type='submit' name='Submit'></input>\n"
, "</form></body></html>" ]
uploadHandler :: Snap ()
uploadHandler = do
liftIO $ createDirectoryIfMissing True tmpdir
handleFileUploads tmpdir defaultUploadPolicy partPolicy hndl
where
isRight (Left _) = False
isRight (Right _) = True
f (_, Left _) = error "impossible"
f (p, Right x) = (fromMaybe "-" $ partFileName p, x)
hndl xs' = do
let xs = [ f x | x <- xs', isRight (snd x) ]
files <- mapM (\(x,fp) -> do
c <- liftIO $ S.readFile fp
return (x,c)) xs
let m = sort files
params <- liftM (Prelude.map (\(a,b) -> (a,S.concat b)) .
Map.toAscList .
rqParams) getRequest
modifyResponse $ setContentType "text/plain"
writeBuilder $ buildRqParams params `mappend` buildFiles m
builder _ [] = mempty
builder ty ((k,v):xs) =
mconcat [ fromByteString ty
, fromByteString ":\n"
, fromByteString k
, fromByteString "\nValue:\n"
, fromByteString v
, fromByteString "\n\n"
, builder ty xs ]
buildRqParams = builder "Param"
buildFiles = builder "File"
tmpdir = "dist/filetmp"
partPolicy partInfo = if partContentType partInfo == "text/plain"
then allowWithMaximumSize 200000
else disallow
serverHeaderHandler :: Snap ()
serverHeaderHandler = modifyResponse $ setHeader "Server" "foo"
chunkedResponse :: Snap ()
chunkedResponse = writeBS "chunked"
testHandler :: Snap ()
testHandler = withCompression $
route [ ("pong" , pongHandler )
, ("echo" , echoHandler )
, ("rot13" , rot13Handler )
, ("echoUri" , echoUriHandler )
, ("fileserve" , serveDirectory "testserver/static")
, ("bigresponse" , bigResponseHandler )
, ("respcode/:code" , responseHandler )
, ("upload/form" , uploadForm )
, ("upload/handle" , uploadHandler )
, ("timeout/tickle" , timeoutTickleHandler )
, ("timeout/badtickle" , badTimeoutTickleHandler )
, ("server-header" , serverHeaderHandler )
, ("chunked" , chunkedResponse )
]
|
