Not yet, strfry doesn't support auth yet.  It's something I really would like to have though so I put a million sat reward out for it on nostr and the strfry channel.  C++ is tough to find contributors for, there was one failed attempt to add it already.. Other options I'm looking at are writing websocket interception middleware for auth like nostr.wine does or supporting additional relay software that can do nip42 like fiatjaf's khatru.