I am creating a service using twisted web that allows clients to upload files using HTTP put. By reading through issue 288 I understand that the problems I am seeing are have been seen before and are outstanding issues. I have a solution that seems to work for me (I have little concern for POST thus my issue is mitigated) but I was hoping to get some community comment on it. My objective is 1) to authorize clients *before* they upload a large file to temporary storage, and 2) decrease latency and increase throughput by eliminating the copy to temp files. I have achieved this by subclassing http.HTTPChannel and overloading allHeadersReceived() in the following way: class MyHTTPChannel(http.HTTPChannel): def allHeadersReceived(self): http.HTTPChannel.allHeadersReceived(self) ... parse headers for access tokens if not access_granted: self.transport.write(<http error message>) self.transport.loseConnection() if self._command != "PUT": return req = self.requests[-1] req.content = <create my own file-like object> Then I create a site object: class MySite(server.Site): protocol = MyHTTPChannel Thus far this seems to work nicely for me, but my knowledge of the twisted internals is limited. Does this seem at all reasonable? Thanks, John