assertEquals("others", fileTypeHelper.get("non/existent"));
    }

    @Test
    public void test_get_withNullMimetype() {
        assertEquals("others", fileTypeHelper.get(null));
    }

    @Test
    public void test_get_withEmptyMimetype() {
        assertEquals("others", fileTypeHelper.get(""));
        assertEquals("others", fileTypeHelper.get(" "));
    }

    @Test

## FastAPI Experts

These are the users that have been [helping others the most with questions in GitHub](help-fastapi.md#help-others-with-questions-in-github). 🙇

They have proven to be **FastAPI Experts** by helping many others. ✨

/// tip

* [Vote for **FastAPI** in AlternativeTo](https://alternativeto.net/software/fastapi/about/).
* [Say you use **FastAPI** on StackShare](https://stackshare.io/pypi-fastapi).

## Help others with questions in GitHub { #help-others-with-questions-in-github }

You can try and help others with their questions in:

* [GitHub Discussions](https://github.com/fastapi/fastapi/discussions/categories/questions?discussions_q=category%3AQuestions+is%3Aunanswered)

# Including WSGI - Flask, Django, others { #including-wsgi-flask-django-others }

You can mount WSGI applications as you saw with [Sub Applications - Mounts](sub-applications.md), [Behind a Proxy](behind-a-proxy.md).

For that, you can use the `WSGIMiddleware` and use it to wrap your WSGI application, for example, Flask, Django, etc.

## Using `WSGIMiddleware` { #using-wsgimiddleware }

/// info

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,
    HTMLResponse,
    JSONResponse,

{* ../../docs_src/path_params_numeric_validations/tutorial003_an_py310.py hl[10] *}

## Number validations: greater than or equal { #number-validations-greater-than-or-equal }

With `Query` and `Path` (and others you'll see later) you can declare number constraints.

Here, with `ge=1`, `item_id` will need to be an integer number "`g`reater than or `e`qual" to `1`.

You can send (and receive) many messages:

<img src="/img/tutorial/websockets/image04.png">

And all of them will use the same WebSocket connection.

## Using `Depends` and others { #using-depends-and-others }

In WebSocket endpoints you can import from `fastapi` and use:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

   * strict than the others.
   */
  fun escapeForUri(vararg codePoints: Int) =
    apply {
      uriEscapedCodePoints.append(String(*codePoints))
    }

  /**
   * Configure code points to be stripped in conversion to `java.net.URI`. That class is more
   * strict than the others.
   */
  fun stripForUri(vararg codePoints: Int) =
    apply {

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

      with:
        repo-token: ${{ secrets.GITHUB_TOKEN }}