#20 Dealing with Circular references

I encountered some server crashes while testing my application.

First I had to actually figure out where my error kept coming from.

The server crashed and gave this error.

hasBinary(obj, toJSON) (RangeError: Maximum call stack size exceeded)

I found this when searching for that specific error online:

• https://github.com/socketio/socket.io/issues/1665

• https://stackoverflow.com/questions/14962018/detecting-and-fixing-circular-references-in-javascript

Basically, my object had a property that referenced its own. Socket.io stringifies your objects when you send them, and you cannot stringify Circular references. This would make the entire server crash.

I had to rewrite quite a bit of code:

I fixed it by not referencing the entire object, but just a property (like the name of the room). If I would need to access the 'connectedRoom' of that object I would just use the name property to search for it in my global rooms object. (rooms[lastUserWhoPlayed.connectedRoom])