We built an in house solution for communicating with quickbooks. We implemented the soap service and communicate with it via a message queue. The biggest issue

We built an in house solution for communicating with quickbooks. We implemented the soap service and communicate with it via a message queue. The biggest issue we've run into is that the web connector is polling the soap service, so you can wait as long as 1 minute for a response depending on how often the web connector is set to poll. We implemented a work around that forces the web connector to poll more often, but when it is in this "synchronous" mode, the quickbooks file is held open and cannot be closed. I am curious how your api gets around this? If you have a good solution, I think we'd definitely be interested in using your api.