Service Oriented Architecture
All of the QlikView services talk to each other using HTTP web service calls. This means that the services can be easily deployed on different servers—even in different domains and behind firewalls—as long as the services can make calls on the ports they use.
QlikView Server
The QVS is slightly different from the other servers, in that "direct" clients—QlikView Desktop, QlikView Plugin, and any OCX clients—will communicate with it via a proprietary, encrypted, binary messaging format, QVP, over port 4747. If a client can't connect directly with the server on port 4747, they have the option of "tunneling" via HTTP or HTTPS through the QVWS or IIS; the web server then talks to QVS over port 4774. The Ajax and mobile clients ...
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