- Web: flush the bufferred response data before performing global operations

home/control_install.go

@@ -351,6 +351,11 @@ func (web *Web) handleInstallConfigure(w http.ResponseWriter, r *http.Request) {
 
 	registerControlHandlers()
 
+	returnOK(w)
+	if f, ok := w.(http.Flusher); ok {
+		f.Flush()
+	}
+
 	// this needs to be done in a goroutine because Shutdown() is a blocking call, and it will block
 	// until all requests are finished, and _we_ are inside a request right now, so it will block indefinitely
 	if restartHTTP {
@@ -358,8 +363,6 @@ func (web *Web) handleInstallConfigure(w http.ResponseWriter, r *http.Request) {
 			_ = Context.web.httpServer.Shutdown(context.TODO())
 		}()
 	}
-
-	returnOK(w)
 }
 
 func (web *Web) registerInstallHandlers() {