diff --git a/lib/hs/src/Thrift/Transport/HttpClient.hs b/lib/hs/src/Thrift/Transport/HttpClient.hs
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+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements. See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership. The ASF licenses this file
+-- to you under the Apache License, Version 2.0 (the
+-- "License"); you may not use this file except in compliance
+-- with the License. You may obtain a copy of the License at
+--
+--   http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing,
+-- software distributed under the License is distributed on an
+-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+-- KIND, either express or implied. See the License for the
+-- specific language governing permissions and limitations
+-- under the License.
+--
+
+module Thrift.Transport.HttpClient
+    ( module Thrift.Transport
+    , HttpClient (..)
+    , openHttpClient
+    ) where
+
+import Thrift.Transport
+import Network.URI
+import Network.HTTP hiding (port, host)
+import Network.TCP
+
+import Control.Monad (liftM)
+import Data.Maybe (fromJust)
+import Data.Monoid (mappend, mempty)
+import Control.Exception (throw)
+import Control.Concurrent.MVar
+import qualified Data.Binary.Builder as B
+import qualified Data.ByteString.Lazy.Char8 as LBS
+
+
+-- | 'HttpClient', or THttpClient implements the Thrift Transport
+-- | Layer over http or https.
+data HttpClient =
+    HttpClient {
+      hstream :: HandleStream LBS.ByteString,
+      uri :: URI,
+      writeBuffer :: WriteBuffer,
+      readBuffer :: ReadBuffer
+    }
+
+uriAuth = fromJust . uriAuthority
+host = uriRegName . uriAuth
+
+port :: URI -> Int
+port uri =
+    if portStr == mempty then
+        httpPort
+    else
+        read portStr
+    where
+      portStr = dropWhile (== ':') $ uriPort $ uriAuth uri
+      httpPort = 80
+
+-- | Use 'openHttpClient' to create an HttpClient connected to @uri@
+openHttpClient :: URI -> IO HttpClient
+openHttpClient uri = do
+  stream <- openTCPConnection (host uri) (port uri)
+  wbuf <- newWriteBuffer
+  rbuf <- newReadBuffer
+  return $ HttpClient stream uri wbuf rbuf
+
+instance Transport HttpClient where
+
+    tClose  = close . hstream
+
+    tRead hclient n = readBuf (readBuffer hclient) n
+
+    tWrite hclient = writeBuf (writeBuffer hclient)
+
+    tFlush hclient = do
+      body <- flushBuf $ writeBuffer hclient
+      let request = Request {
+                      rqURI = uri hclient,
+                      rqHeaders = [
+                       mkHeader HdrContentType "application/x-thrift",
+                       mkHeader HdrContentLength $  show $ LBS.length body],
+                      rqMethod = POST,
+                      rqBody = body
+                    }
+
+      res <- sendHTTP (hstream hclient) request
+      case res of
+        Right res -> do
+            fillBuf (readBuffer hclient) (rspBody res)
+        Left _ -> do
+            throw $ TransportExn "THttpConnection: HTTP failure from server" TE_UNKNOWN
+      return ()
+
+    tIsOpen _ = return True
+-- Mini IO buffers
+
+type WriteBuffer = MVar (B.Builder)
+
+newWriteBuffer :: IO WriteBuffer
+newWriteBuffer = newMVar mempty
+
+writeBuf :: WriteBuffer -> LBS.ByteString -> IO ()
+writeBuf w s = modifyMVar_ w $ return . (\builder ->
+                 builder `mappend` (B.fromLazyByteString s))
+
+flushBuf :: WriteBuffer -> IO (LBS.ByteString)
+flushBuf w = B.toLazyByteString `liftM` swapMVar w mempty
+
+
+type ReadBuffer = MVar (LBS.ByteString)
+
+newReadBuffer :: IO ReadBuffer
+newReadBuffer = newMVar mempty
+
+fillBuf :: ReadBuffer -> LBS.ByteString -> IO ()
+fillBuf r s = swapMVar r s >> return ()
+
+readBuf :: ReadBuffer -> Int -> IO (LBS.ByteString)
+readBuf r n = modifyMVar r $ return . flipPair . LBS.splitAt (fromIntegral n)
+    where flipPair (a, b) = (b, a)