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ensuring to receive 4 bytes. #991

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merged 3 commits into from
May 23, 2024
Merged

ensuring to receive 4 bytes. #991

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5e508a2
ensuring to receive 4 bytes.
kazu-yamamoto May 15, 2024
eb7b730
recv4 breaks if "" is received.
kazu-yamamoto May 22, 2024
4247e5e
using null
kazu-yamamoto May 22, 2024
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16 changes: 14 additions & 2 deletions warp/Network/Wai/Handler/Warp/Run.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -386,15 +386,27 @@ serveConnection conn ii th origAddr transport settings app = do
if isHTTP2 transport
then return (True, "")
else do
bs0 <- connRecv conn
if S.length bs0 >= 4 && "PRI " `S.isPrefixOf` bs0
bs0 <- recv4
if "PRI " `S.isPrefixOf` bs0
then return (True, bs0)
else return (False, bs0)
if settingsHTTP2Enabled settings && h2
then do
http2 settings ii conn transport app origAddr th bs
else do
http1 settings ii conn transport app origAddr th bs
where
recv4 = do
bs0 <- connRecv conn
if S.length bs0 >= 4
then return bs0
else loop bs0
loop bs0 = do
bs1 <- connRecv conn
let bs = bs0 `S.append` bs1
if S.length bs >= 4
then return bs
else loop bs

-- | Set flag FileCloseOnExec flag on a socket (on Unix)
--
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