Im developing the server side for an iOS app with Google App Engine and JDO in Java, and I just realized that GAE dont support Apple Push Notification Service, and I`m very frus
AppEngine now supports Sockets so you should be able to use a slightly modified version of javapns now. I have successfully got PyAPNs working on AppEngine (python) which uses the new Socket functionality in 1.7.7.
If you are interested in seeing my python AppEngine project which does APNS, let me know and I will edit my answer with a link to it. Every time I post a link to it here, a moderator deletes my answer for some reason