400 “bad request” after tomcat installation on kubuntu

Question

I've installed Tomcat 6.0.18 on my kubuntu machine following this guide but I got a 400 response when I try to reach http://127.0.0.1:8080

I also try to install it on a different PC with Ubuntu and everything was ok...

Any clue???

Answer 1

Do you have a proxy configured for your Kubuntu machine? If so, does the traffic accidentally go through the proxy even when surfing http://127.0.0.1:8080/? Have you tried to telnet localhost 8080 and then enter GET / HTTP/1.0 or so?

Answer 2

The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications.