[FreeNX-kNX] Suggestion to test ports for conflicts

[Jeffrey J. Kosowsky]

Forwarding this (along with several other postings) to the list per
Fabian's suggestion... Note: I have also previously posted a copy to
the freenx-devel list.

Jeffrey J. Kosowsky wrote at about 00:59:41 -0500 on Monday, December 10, 2007:
 > When I originally started playing with multimedia on nx, I was stymied
 > because the nx client kept failing to connect until I realize that
 > there was a port conflict between port 8000 (DISPLAY_BASE+7000) which
 > nx was trying to use for sound and some existing nasd process on my
 > server. As a newbie, it took me quite a while to diagnose and fix the
 > problem.
 > 
 > This led me to wonder whether it would make sense for the nxserver
 > side to look for conflicts before selecting the base.
 > For example, it would use a program like 'netstat' to identify ports
 > that are already in use. The logic would be something like this:
 > 	 for (base=DISPLAY_BASE; ; base++) {
 > 		 if base or base+5000 or base+7000 or base+9000 are already
 > 		 bound to a port, then break;
 > 	 }
 > 
 > Given the need for at least 4 very specific ports, it would seem that
 > the chance of collision is not insignificant and that logic like the
 > above would be very useful.

Also, I now realize that you need to use port base+3000