in_: APIKeyIn = Field(alias="in")
    name: str


class HTTPBase(SecurityBase):
    type_: SecuritySchemeType = Field(default=SecuritySchemeType.http, alias="type")
    scheme: str


class HTTPBearer(HTTPBase):
    scheme: Literal["bearer"] = "bearer"
    bearerFormat: Optional[str] = None


class OAuthFlow(BaseModelWithConfig):
    refreshUrl: Optional[str] = None
    scopes: dict[str, str] = {}

## 0.27.1

* Fix `auto_error=False` handling in `HTTPBearer` security scheme. Do not `raise` when there's an incorrect `Authorization` header if `auto_error=False`. PR [#282](https://github.com/tiangolo/fastapi/pull/282).