Fix case where pingTimeoutDisabled is true

Author: jondubois

lib/transport.js

@@ -320,15 +320,17 @@ AGTransport.prototype._onError = function (error) {
 };
 
 AGTransport.prototype.isStale = function () {
+  if (this.pingTimeoutDisabled) return false;
   return Date.now() - this.lastPingTimestamp >= this.pingTimeout;
 };
 
 AGTransport.prototype._resetPingTimeout = function () {
+  this.lastPingTimestamp = Date.now();
+
   if (this.pingTimeoutDisabled) {
     return;
   }
 
-  this.lastPingTimestamp = Date.now();
   clearTimeout(this._pingTimeoutTicker);
   this._pingTimeoutTicker = setTimeout(() => {
     this._destroy(4000);