fieldDelimiter:  ",",
			sendErr:         nil,
			header:          true,
			wantColumns:     []string{"header1", "header2", "header3"},
			wantFields:      "ok1,ok2,ok3\n" + `a word,"b"""` + "\n",
			wantErr:         io.EOF,
		},
		{
			// This works since LazyQuotes is true:
			file:            "invalid-badstartline.csv",
			recordDelimiter: "\n",
			fieldDelimiter:  ",",
			sendErr:         nil,

async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": "Bearer"},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username = payload.get("sub")
        if username is None:

        // check to ensure that headers feature does not already exist
        if (setupNodeParent != null) {
            ArrayNode setupNode = (ArrayNode) setupNodeParent.get("setup");
            if (hasFeature(setupNode)) {
                return setupNodeParent;
            }
        }
        // transform or insert the headers feature into setup/skip/features
        ArrayNode setupNode;

		# Write object back to S3 Object Lambda
		# response sends the transformed data
		# back to MinIO and then to the user
		resp = make_response(transformed_object, 200)
		resp.headers['x-amz-request-route'] = request_route
		resp.headers['x-amz-request-token'] = request_token
		return resp

	else:
		abort(400)

if __name__ == '__main__':
	app.run()
```

  public void run() throws Exception {
    Request request = new Request.Builder()
        .url("https://api.github.com/repos/square/okhttp/issues")
        .header("User-Agent", "OkHttp Headers.java")
        .addHeader("Accept", "application/json; q=0.5")
        .addHeader("Accept", "application/vnd.github.v3+json")
        .build();

    try (Response response = client.newCall(request).execute()) {

    *,
    settings: Settings,
    query: str,
    after: str | None = None,
) -> dict[str, Any]:
    headers = {"Authorization": f"token {settings.github_token.get_secret_value()}"}
    variables = {"after": after}
    response = httpx.post(
        github_graphql_url,
        headers=headers,
        timeout=settings.httpx_timeout,
        json={"query": query, "variables": variables, "operationName": "Q"},
    )

* Métodos.
* Payloads de request en el body, parámetros de query, etc.
* Payloads de response.

También tendrás **errores en línea** para todo.

Y cada vez que actualices el código del backend, y **regeneres** el frontend, tendrás las nuevas *path operations* disponibles como métodos, las antiguas eliminadas, y cualquier otro cambio se reflejará en el código generado. 🤓

        file("/build/${testIntermediateDir}/transformed/rest-api-spec/test/" + test).exists()
        file("/build/${testIntermediateDir}/transformed/rest-api-spec/test/" + test).text.contains("headers") //transformation adds this
        file("/build/resources/yamlRestCompatTest/rest-api-spec/test/" + additionalTest).exists()

## 代理轉發標頭 { #proxy-forwarded-headers }

當你使用代理處理 HTTPS 時，你的**應用伺服器**（例如透過 FastAPI CLI 啟動的 Uvicorn）其實不知道任何 HTTPS 的處理流程，它是用純 HTTP 與 **TLS 終止代理**通訊。

這個**代理**通常會在把請求轉發給**應用伺服器**之前，臨時加入一些 HTTP 標頭，讓應用伺服器知道該請求是由代理**轉發**過來的。

/// note | 技術細節

這些代理標頭包括：

* [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For)

{* ../../docs_src/middleware/tutorial001_py310.py hl[8:9,11,14] *}

/// tip

Keep in mind that custom proprietary headers can be added [using the `X-` prefix](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).