peer.play()

    // Play it back.
    val connection = connect(peer)
    val stream = connection.newStream(headerEntries("b", "banana"), true)
    val out = stream.getSink().buffer()
    out.writeUtf8("c3po")
    out.close()
    assertThat(stream.takeHeaders()).isEqualTo(headersOf("a", "android"))
    assertStreamData("robot", stream.getSource())
    connection.writePingAndAwaitPong()

## Detalhes muito técnicos

/// warning

Você pode provavelmente pular isso.

Esses são detalhes muito técnicos de como **FastAPI** funciona por baixo do capô.

Se você tem algum conhecimento técnico (corrotinas, threads, blocking etc) e está curioso sobre como o FastAPI controla o `async def` vs normal `def`, vá em frente.

///

### Funções de operação de rota

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