backend developer

I am looking for experienced develop to fix an issue in backend code developed with nodejs, socketio, expressjs. It is socket server of game project, The server code works well but sometimes suddenly it is stucked if client's connect is so long (so it need ctrl+C in this case). And sometimes the detection connect/disconnect continue again and again sometimes even if the client's connection is good. (it effects logic of game) So I need the experienced backend developer to check and fix these. If you have the experience about this, bid asap.