--- a/etwist/request.py	Thu Mar 15 17:54:40 2012 +0100
+++ b/etwist/request.py	Thu Mar 15 18:34:59 2012 +0100
@@ -33,16 +33,13 @@
 class CubicWebTwistedRequestAdapter(CubicWebRequestBase):
     def __init__(self, req, vreg, https):
         self._twreq = req
-        super(CubicWebTwistedRequestAdapter, self).__init__(vreg, https, req.args)
+        super(CubicWebTwistedRequestAdapter, self).__init__(
+            vreg, https, req.args, headers=req.received_headers)
         for key, (name, stream) in req.files.iteritems():
             if name is None:
                 self.form[key] = (name, stream)
             else:
                 self.form[key] = (unicode(name, self.encoding), stream)
-        # XXX can't we keep received_headers?
-        self._headers_in = Headers()
-        for k, v in req.received_headers.iteritems():
-            self._headers_in.addRawHeader(k, v)
 
     def http_method(self):
         """returns 'POST', 'GET', 'HEAD', etc."""
@@ -61,14 +58,6 @@
             path = path.split('?', 1)[0]
         return path
 
-    def get_header(self, header, default=None, raw=True):
-        """return the value associated with the given input header, raise
-        KeyError if the header is not set
-        """
-        if raw:
-            return self._headers_in.getRawHeaders(header, [default])[0]
-        return self._headers_in.getHeader(header, default)
-
     def _validate_cache(self):
         """raise a `DirectResponse` exception if a cached page along the way
         exists and is still usable
@@ -95,21 +84,3 @@
                 raise DirectResponse(response)
         # Expires header seems to be required by IE7
         self.add_header('Expires', 'Sat, 01 Jan 2000 00:00:00 GMT')
-
-    def header_accept_language(self):
-        """returns an ordered list of preferred languages"""
-        acceptedlangs = self.get_header('Accept-Language', raw=False) or {}
-        for lang, _ in sorted(acceptedlangs.iteritems(), key=lambda x: x[1],
-                              reverse=True):
-            lang = lang.split('-')[0]
-            yield lang
-
-    def header_if_modified_since(self):
-        """If the HTTP header If-modified-since is set, return the equivalent
-        date time value (GMT), else return None
-        """
-        mtime = self.get_header('If-modified-since', raw=False)
-        if mtime:
-            # :/ twisted is returned a localized time stamp
-            return datetime.fromtimestamp(mtime) + GMTOFFSET
-        return None