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Don't send an Accept header if the list of accepted types is empty

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This commit is contained in:
Timo von Holtz 2015-02-17 11:56:15 +11:00
parent c444ec8374
commit 098b503625
1 changed files with 3 additions and 2 deletions
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5
src/Servant/Common/Req.hs
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@ -13,7 +13,7 @@ import Data.Aeson
import Data.Aeson.Parser
import Data.Aeson.Types
import Data.Attoparsec.ByteString
import Data.ByteString.Lazy hiding (pack, filter, map)
import Data.ByteString.Lazy hiding (pack, filter, map, null)
import qualified Data.ByteString as BS
import qualified Data.ByteString.Char8 as BSC
import Data.String
@ -93,7 +93,8 @@ reqToRequest req (BaseUrl reqScheme reqHost reqPort) =
setheaders r = r { requestHeaders = requestHeaders r
++ Prelude.map toProperHeader (headers req) }
setAccept r = r { requestHeaders = filter ((/= "Accept") . fst) (requestHeaders r)
++ [("Accept", BS.intercalate ", " (map renderAccept $ reqAccept req))] }
++ [("Accept", BS.intercalate ", " (map renderAccept $ reqAccept req))
| not . null . reqAccept $ req] }
renderAccept :: MediaType -> BS.ByteString
renderAccept m = BSC.pack (show m)
toProperHeader (name, val) =