Steps to Reproduce

enable websockets
run the attachment ws-useragent-missing.zul
click the button

Current Result

during an execution via websockets the user agent information is missing

Expected Result

useragent information should be available

Workaround

store the user agent information (related information) as a desktop scoped attribute (when the page loads) for later retrieval during websocket requests e.g using a DesktopInit listener

public void init(Desktop desktop, Object request) {
  deskop.setAttribute("my.useragent", desktop.getExecution().getUserAgent());
  deskop.setAttribute("my.mobile", desktop.getExecution().getBrowser("mobile"));
}

And retrieve the same information later:

String useragent = (String)Executions.getCurrent().getDesktop().getAttribute("my.useragent");
String mobile = (String)Executions.getCurrent().getDesktop().getAttribute("my.mobile");