H, I posted this question already to comp.python.twisted just to discover a little later, that comp.python.twisted.web might be more appropriate. So here is my post again I'd like to implement a small https twisted server, which can wrap a wsgi module and which can verify client certificates I am able to do this with apache, but would like to do the same with twisted. (For some projects it would allow me to get rid of apache or to perform certain tests on a Windows hosts) What I have running is following shell script calling twistd #!/bin/sh certfile=mycert.crt keyfile=mycert.key wsgi_module=tw_wrapper.application twistd -n web --https 4433 \ --certificate $certfile --privkey $keyfile \ --wsgi $wsgi_module Basically I just use my wsgi script and didn't write any twisted code. My first step would be how to write the same twisted code without calling twistd The next step how to enforce enable client certificates I wondered where I could find any good example code implementing a web server with client certificate authentication ( and ideally with a subsequent wsgi module) TIA