You can use return context.getUrl().toString().split(facesContext.getExternalContext().getRequest().getRequestURI())[0]

context.getUrl().toString().split(facesContext.getExternalContext().getRequest().getRequestURI())[0]

does not working.

return the result of http://m.corp.com/cc.nsf/vfdefault.xsp?documentId=3A47BD1C3BF869DD48257C4C001EBBB0&action=openDocument

The port number 81 was eaten by xpage code.

Here is my Platform: windows x64 + domino 9.0.0

then I found https was also eaten by xpages code.

is there any body has any idea for this?

Or it's a bug for xpage?

This will return the host including the http or https as well as the port if any is set

var host = context.getUrl().getHost()+":"+context.getUrl().getPort();

it's very wield, have you tried it?

it's returning m.corp.com:-1

I think the problem goes to the reverse proxy port could not be access by xpage code.

but csjs code "location.href" can do that.

and is there any way to pass the csjs code to ssjs code?

all the time.  not with a proxy server though.  that may be your weak link.