如何使用GlassFish4套接字服务器维护状态？

Question

I am building a game using a socket server via GlassFish 4 .

The problem I'm running into is that,

every time a socket connection is made my @ServerEndpoint class is re-instantiated .

I'm basically just looking for the class that kicks off the GlassFish 4 server similar to writing a Servlet in Tomcat . I just need a place to initialize the state of my game , I thought the server end-point would be that place, but it's re-initializing my game state every time I open a connection to it (which is obviously problematic).

I could write my game state containers as singletons or static classes with static initializers , but I would like to avoid both of those things and instantiate all of my game state containers in, I guess the class that sits listening for the web socket connections ?

I haven't been able to find something like that in the glassfish tutorials I have read through.

Answer 1

I have found the solution to this. I was not declaring my data structures with "static final". Doing just "private HashMap<> x;" resulted in "x" being reinstantiated every time a new connection was opened.

"private static final HashMap<> x;" looks like it stopped it from doing this.