I have a web server for HTML and Flash and a COMET server. Only the Flash stuff will ever talk to the COMET server.
I'm considering running both server on the same machine. If I would do so, I would have to use different ports for each server: 80 for the web server, something else for the COMET server (I think using the web server as reverse proxy would not play very well with COMET).
What would be the consequences of running the COMET server on a port != 80?
I'm particularly concerned about people behind firewalls. Do you know of people or organizations that block outgoing connections other than 80? Is this common? Besides that, will the use of an alternate port for HTTP cause other complications that I am not aware of?