Refactor authentication handling to use WebSocket URLs instead of Service URLs for improved connection management. Introduce WebSocketURL method in the Server struct to dynamically generate WebSocket URLs based on request headers. Clean up whitespace in handle-auth.go for better code readability.

app/server.go

@@ -111,6 +111,29 @@ func (s *Server) ServiceURL(req *http.Request) (url string) {
 	return proto + "://" + host
 }
 
+func (s *Server) WebSocketURL(req *http.Request) (url string) {
+	proto := req.Header.Get("X-Forwarded-Proto")
+	if proto == "" {
+		if req.TLS != nil {
+			proto = "wss"
+		} else {
+			proto = "ws"
+		}
+	} else {
+		// Convert HTTP scheme to WebSocket scheme
+		if proto == "https" {
+			proto = "wss"
+		} else if proto == "http" {
+			proto = "ws"
+		}
+	}
+	host := req.Header.Get("X-Forwarded-Host")
+	if host == "" {
+		host = req.Host
+	}
+	return proto + "://" + host
+}
+
 func (s *Server) DashboardURL(req *http.Request) (url string) {
 	return s.ServiceURL(req) + "/"
 }
@@ -277,7 +300,7 @@ func (s *Server) handleAuthLogin(w http.ResponseWriter, r *http.Request) {
 	delete(s.challenges, challengeHex)
 	s.challengeMutex.Unlock()
 
-	relayURL := s.ServiceURL(r)
+	relayURL := s.WebSocketURL(r)
 
 	// Validate the authentication event with the correct challenge
 	// The challenge in the event tag is hex-encoded, so we need to pass the hex string as bytes