if you are going to use only UX clients (and not DesktopUI or Mobile UI), there is no need to run the Webclient_http.ctl. You need only start a small http server in a control manager. 

Here is the CTRL code you need:
<code cpp>
#uses "CtrlHTTP"
main() 
{ 
  int port, sport;

  paCfgReadValue(PROJ_PATH + "/config/config", "httpServer", "httpPort", port); paCfgReadValue(PROJ_PATH + 
 /config/config", "httpServer", "httpsPort", sport);

  httpServer(false, port, sport); 
}
</code>
The config file entries need to include this section:

<code>
[httpServer] 
httpPort = 80 
httpsPort = 443 
indexPage = "/data/ulc/start.html" 
uiArguments = "-p vision/login.pnl -centered -iconBar -menuBar -style fusion"
</code>
You may need to move the ports if something else has the default ports blocked or you are running on Linux.

On the remote browser:

https://your.oa.server.ux:443 or https://your.oa.server.ux (if the port is standard)