# HTTP Basic Auth { #http-basic-auth }

For the simplest cases, you can use HTTP Basic Auth.

In HTTP Basic Auth, the application expects a header that contains a username and a password.

If it doesn't receive it, it returns an HTTP 401 "Unauthorized" error.

And returns a header `WWW-Authenticate` with a value of `Basic`, and an optional `realm` parameter.

That tells the browser to show the integrated prompt for a username and password.

    try:
        yield state["/async_raise"]
    except AsyncDependencyError:
        errors.append("/async_raise")
        raise
    finally:
        state["/async_raise"] = "asyncgen raise finalized"


def generator_state_try(state: dict[str, str] = Depends(get_state)):
    state["/sync_raise"] = "generator raise started"
    try:
        yield state["/sync_raise"]
    except SyncDependencyError:
        errors.append("/sync_raise")

Во многих случаях Вы уже можете знать ответы на эти вопросы. 🤓

Если Вы много помогаете людям с их вопросами, Вы станете официальным [Экспертом FastAPI](fastapi-people.md#fastapi-experts){.internal-link target=_blank}. 🎉

Только помните, самое важное — постарайтесь быть добрыми. Люди приходят со своими разочарованиями и часто задают вопросы не лучшим образом, но постарайтесь, насколько можете, быть доброжелательными. 🤗

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~~ to you under the Apache License, Version 2.0 (the
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 * "License"); you may not use this file except in compliance
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