I\'m using multiple modules with Google AppEngine and was wondering if its possible to run development server (java version) so that ports that are assigned to different mod
I don't think Google will provide any easy approach to this problem. You'll have to use the modules service and wrap it to your helper class such as LinkFactory with methods like getLinkToA(String) and getLinkToB(String) and you them everywhere you're creating the links to the modules.
Same (and bigger) problem is if you use the dispatch file. This is actually bigger problem, because parts of your front end app may failed since the routing is not working in the development server.