# Custom Response Classes - File, HTML, Redirect, Streaming, etc.

There are several custom response classes you can use to create an instance and return them directly from your *path operations*.

Read more about it in the [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/).

You can import them directly from `fastapi.responses`:

```python
from fastapi.responses import (
    FileResponse,

	"See Other":                       http.StatusSeeOther,
	"Not Modified":                    http.StatusNotModified,
	"Use Proxy":                       http.StatusUseProxy,
	"Temporary Redirect":              http.StatusTemporaryRedirect,
	"Permanent Redirect":              http.StatusPermanentRedirect,
	"Bad Request":                     http.StatusBadRequest,
	"Unauthorized":                    http.StatusUnauthorized,

        if (user.hasRoles(fessConfig.getAuthenticationAdminRolesAsArray())) {
            return redirect(AdminDashboardAction.class);
        }
        final Class<? extends FessAdminAction> actionClass = AdminAction.getAdminActionClass(user);
        if (actionClass != null) {
            return redirect(actionClass);
        }
        return redirectToRoot();
    }

* nat
-N ISTIO_INBOUND
-N ISTIO_REDIRECT
-N ISTIO_IN_REDIRECT
-N ISTIO_OUTPUT
-A ISTIO_INBOUND -p tcp --dport 15008 -j RETURN
-A ISTIO_REDIRECT -p tcp -j REDIRECT --to-ports 15001
-A ISTIO_IN_REDIRECT -p tcp -j REDIRECT --to-ports 15006
-A PREROUTING -p tcp -j ISTIO_INBOUND
-A ISTIO_INBOUND -p tcp --dport 15020 -j RETURN
-A ISTIO_INBOUND -p tcp --dport 15021 -j RETURN
-A ISTIO_INBOUND -p tcp --dport 15090 -j RETURN

* nat
-N ISTIO_INBOUND
-N ISTIO_REDIRECT
-N ISTIO_IN_REDIRECT
-N ISTIO_OUTPUT
-A ISTIO_INBOUND -p tcp --dport 15008 -j RETURN
-A ISTIO_REDIRECT -p tcp -j REDIRECT --to-ports 15001
-A ISTIO_IN_REDIRECT -p tcp -j REDIRECT --to-ports 15006
-A PREROUTING -p tcp -j ISTIO_INBOUND
-A ISTIO_INBOUND -p tcp --dport 22 -j RETURN
-A ISTIO_INBOUND -p tcp --dport 15020 -j RETURN
-A ISTIO_INBOUND -p tcp --dport 15021 -j RETURN

            }
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL), this::asEditHtml);
        });
        return redirect(getClass());
    }

    @Execute
    @Secured({ ROLE })
    public HtmlResponse update(final EditForm form) {
        verifyCrudMode(form.crudMode, CrudMode.EDIT);

func redirectRunningPod(pod *corev1.Pod, netns string) error {
	pi := plugin.ExtractPodInfo(pod)
	redirect, err := plugin.NewRedirect(pi)
	if err != nil {
		return fmt.Errorf("setup redirect: %v", err)
	}
	rulesMgr := plugin.IptablesInterceptRuleMgr()
	if err := rulesMgr.Program(pod.Name, netns, redirect); err != nil {
		return fmt.Errorf("program redirection: %v", err)
	}
	return nil
}

const (

    assert "/static/swagger-ui-bundle.js" in response.text
    assert "/static/swagger-ui.css" in response.text


def test_swagger_ui_oauth2_redirect_html(client: TestClient):
    response = client.get("/docs/oauth2-redirect")
    assert response.status_code == 200, response.text
    assert "window.opener.swaggerUIRedirectOauth2" in response.text


def test_redoc_html(client: TestClient):
    response = client.get("/redoc")

        defaultSettings.put("onelogin.saml2.idp.single_sign_on_service.binding", "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect");
        defaultSettings.put("onelogin.saml2.idp.single_logout_service.response.url", "");
        defaultSettings.put("onelogin.saml2.idp.single_logout_service.binding", "urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect");
        defaultSettings.put("onelogin.saml2.security.nameid_encrypted", "false");

    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/typer": {
                "get": {
                    "summary": "Redirect Typer",
                    "operationId": "redirect_typer_typer_get",
                    "responses": {
                        "200": {
                            "description": "Successful Response",