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

///

그럼에도 불구하고 **애플리케이션 서버**는 자신이 신뢰할 수 있는 **프록시** 뒤에 있다는 것을 모르므로, 기본적으로는 그 헤더들을 신뢰하지 않습니다.

/// note | Detalhes Técnicos

Os cabeçalhos do proxy são:

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

///

/// note | Технічні деталі

Заголовки проксі:

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

///

/// note | Détails techniques

Les en-têtes du proxy sont :

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

///

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

///

不过，由于**应用服务器**并不知道自己位于受信任的**代理**之后，默认情况下，它不会信任这些请求头。

但你可以配置**应用服务器**去信任由**代理**发送的这些“转发”请求头。如果你在使用 FastAPI CLI，可以使用命令行选项 `--forwarded-allow-ips` 指定它应该信任哪些 IP 发来的这些“转发”请求头。

例如，如果**应用服务器**只接收来自受信任**代理**的通信，你可以设置 `--forwarded-allow-ips="*"`，让它信任所有传入的 IP，因为它只会接收来自**代理**所使用 IP 的请求。

/// note | Detalles técnicos

Los headers del proxy son:

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

///

          // notices and transitions to the FAILED state. We do it by calling notifyFailed directly
          // because the service does not monitor the state of the future so if the exception is not
          // caught and forwarded to the service the task would stop executing but the service would
          // have no idea.
          // TODO(lukes): consider building everything in terms of ListenableScheduledFuture then

	err = r.forwardTo(o.Prefix)
	if err != nil {
		return entries, err
	}
	if o.Marker != "" {
		err = r.forwardTo(o.Marker)
		if err != nil {
			return entries, err
		}
	}
	o.debugln("forwarded to ", o.Prefix, "marker:", o.Marker, "sep:", o.Separator)

	// Filter
	if !o.Recursive {
		entries.o = make(metaCacheEntries, 0, o.Limit)
		pastPrefix := false
		err := r.readFn(func(entry metaCacheEntry) bool {

// accepted and all subsequent writes, and [Writer.Flush], will return the error.
// After all data has been written, the client should call the
// [Writer.Flush] method to guarantee all data has been forwarded to
// the underlying [io.Writer].
type Writer struct {
	err error
	buf []byte
	n   int
	wr  io.Writer
}

// NewWriterSize returns a new [Writer] whose buffer has at least the specified

type httpStreamResponse struct {
	done  chan error
	block chan []byte
	err   error
}

// Write part of the streaming response.
// Note that upstream errors are currently not forwarded, but may be in the future.
func (h *httpStreamResponse) Write(b []byte) (int, error) {
	if len(b) == 0 || h.err != nil {
		// Ignore 0 length blocks
		return 0, h.err
	}
	tmp := make([]byte, len(b))