How to enable Jetty to support cometd/reverse ajax while let it listen to port 80?

Question

I would like to use cometd / reverse ajax capability of Jetty 7. I tried to configure it so it listen to port 80, instead of 8080.

However, according to http://jetty.mortbay.org/jetty5/faq/faq%5Fs%5F200-General%5Ft%5Fapache.html ,

Apache can be configured as a HTTP/1.1 proxy to pass selected request to the Jetty using the HTTP/1.1 protocol. This is simple to configure and use, but current versions of the apache mod_proxy do not support persistent connections.

As far as I know, the reverse ajax in jetty is depending on continuation (I guess it is persistent connection). So how to let jetty support reverse ajax, while coexist with apache server?

Thanks.

Answer 1

Why not use mod_jk?

Answer 2

If you invoke jetty with "java -Djetty.port=80 -jar start.jar" it should attach to port 80 instead.

You will require root priviledges under Unix.

Answer 3

From: http://docs.codehaus.org/display/JETTY/port80

• Start Jetty as the root user, and use Jetty's setuid mechanism to switch to a non-root user after startup

  or

• Configure the server to run as a normal user on port 8080 (or some other non protected port).Then, configure the operating system to redirect port 80 to 8080 using ipchains, iptables, ipfw or a similar mechanism.