Web Socket - a starting point for a simple web socket communication object, sending JSON with a to value to target all or one specified user

comms.js

var piComms = function (userName, setGlobal, pingInterval) {
    'use strict';

    var user = userName;
    var pingTimerId;
    var pingTimerInterval = (pingInterval != undefined) ? pingInterval : 5000;
    setGlobal = (setGlobal != undefined && setGlobal == false);
    
    var pub = { 
        setUserName: function (userName) {
            user = userName;
        },
        send : function (msg, to, data) {
            if (to == undefined) to = "all";
            if (data == undefined) data = {};
            var m = {
                from: user,
                to: to,
                message: msg,
                data: data
            };
            pub.socketSend(JSON.stringify(m));
        },

        socketSend : function (msg) {
            socket.send(msg);
        },

        onrecieve: function (msg) {
        },

        onopen : function (msg) {
        },

        onclose : function (msg) {
        },

        onerror : function (msg) {
        }
    };
        
    var protocol = location.protocol === "https:" ? "wss:" : "ws:";
    var wsUri = protocol + "//" + window.location.host;
    var socket = null;

    var openSocket = function () {
        if (socket === null || socket.readyState === undefined || socket.readyState > 1) {
            if (setGlobal) {
                socket = window.socket = new WebSocket(wsUri);
            } else {
                socket = new WebSocket(wsUri);
            }
            
            socket.onopen = function (e) {
                console.log("socket opened", e);
                pingTimerId = setInterval(function () {
                    openSocket();
                }, pingInterval);
                try {
                    pub.onopen(e);
                }
                catch (ex) { }
            };

            socket.onclose = function (e) {
                console.log("socket closed", e);
                try {
                    pub.onerror(e);
                }
                catch (ex) { }
            };

            socket.onmessage = function (e) {
                console.log(e);
                //make a message object
                var msg = JSON.parse(e.data);
                try {
                    if (msg.to.toLowerCase() == "all" || msg.to == user) pub.onrecieve(msg);
                }
                catch (ex) { }
            };

            socket.onerror = function (e) {
                console.error(e.data);
                try {
                    pub.onerror(e);
                }
                catch (ex) { }
            };
        }
    }

    openSocket();
            
    return pub;
};