## 2. Protocol Specification Reference

- **MS-SMBD**: SMB2 Remote Direct Memory Access (RDMA) Transport Protocol
- **MS-SMB2 Section 2.2.3.1.1**: SMB2 Negotiate Protocol Request with RDMA
- **MS-SMB2 Section 3.1.5.2**: RDMA Transport Connection
- **RFC 5040**: A Remote Direct Memory Access Protocol Specification
- **RFC 5041**: Direct Data Placement over Reliable Transports

We could also import them like:

```Python
from app.routers import items, users
```

/// info

The first version is a "relative import":

```Python
from .routers import items, users
```

The second version is an "absolute import":

```Python
from app.routers import items, users
```

middlewares en la [Guía del Usuario Avanzado: Middleware Avanzado](../advanced/middleware.md){.internal-link target=_blank}.

Leerás sobre cómo manejar <abbr title="Cross-Origin Resource Sharing">CORS</abbr> con un middleware en la siguiente sección....

/*
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

    * **WebSockets**
    * àwọn ìdánwò tí ó rọrùn púpọ̀ lórí HTTPX àti `pytest`
    * **CORS**
    * **Cookie Sessions**
    * ...àti síwájú síi.

## Ìṣesí

    * **GraphQL**
    * تست‌های خودکار آسان مبتنی بر HTTPX و `pytest`
    * **CORS**
    * **Cookie Sessions**
    * و موارد بیشمار دیگر.

## کارایی

# Benchmarks { #benchmarks }

Independent TechEmpower benchmarks show **FastAPI** applications running under Uvicorn as <a href="https://www.techempower.com/benchmarks/#section=test&runid=7464e520-0dc2-473d-bd34-dbdfd7e85911&hw=ph&test=query&l=zijzen-7" class="external-link" target="_blank">one of the fastest Python frameworks available</a>, only below Starlette and Uvicorn themselves (used internally by FastAPI).

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how environment variables would be useful and applicable right away. But they keep showing up in many different scenarios when you are developing, so it's good to know about them.

For example, you will need this information in the next section, about [Virtual Environments](virtual-environments.md)....

The main tasks that you can do right now are:

* [Help others with questions in GitHub](#help-others-with-questions-in-github){.internal-link target=_blank} (see the section above).
* [Review Pull Requests](#review-pull-requests){.internal-link target=_blank} (see the section above).

Those two tasks are what **consume time the most**. That's the main work of maintaining FastAPI.