diff --git a/gunicorn/http/tee.py b/gunicorn/http/tee.py
index 12287932..fdf6cb90 100644
--- a/gunicorn/http/tee.py
+++ b/gunicorn/http/tee.py
@@ -132,8 +132,6 @@ class TeeInput(object):
     def _tee(self, length):
         """ fetch partial body"""
         while True:
-            self.buf = read_partial(self.socket, length, self.buf)
-            
             chunk, self.buf = self.parser.filter_body(self.buf)
             if chunk:
                 self.tmp.write(chunk)
@@ -144,6 +142,7 @@ class TeeInput(object):
             if self.parser.body_eof():
                 break
             
+            self.buf = read_partial(self.socket, length, self.buf)
         self._finalize()
         return ""
         
diff --git a/gunicorn/util.py b/gunicorn/util.py
index 3973e597..85b57d38 100644
--- a/gunicorn/util.py
+++ b/gunicorn/util.py
@@ -94,11 +94,13 @@ def close(sock):
         pass
   
 def read_partial(sock, length, buf=None):
+    tmp_buf = array.array("c", '\0' * length)
+    l = sock.recv_into(tmp_buf, length)
+    
     if not buf:
-        buf = array.array("c", '\0' * length)
-        l = sock.recv_into(buf, length)
-        return buf[:l]
-    return buf
+        return tmp_buf[:l]
+    
+    return buf + tmp_buf[:l]
 
 def write_chunk(sock, data):
     chunk = "".join(("%X\r\n" % len(data), data, "\r\n"))