I am getting the same issue too, every other time I get this "unexpected end of stream" IOE exception. As you say no logs are recorded in appengine. I have a class with several endpoints but this only happens to one of them.
I had same issue. Problem is, that communication with endpoints must NOT be running on ui/main thread. Easiest way is to create simple ASyncTask for example like thislike this.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.