* `filename` - Se for definido, é incluído no cabeçalho `Content-Disposition`.

Respostas de Arquivos incluem o tamanho do arquivo, data da última modificação e ETags apropriados, nos cabeçalhos `Content-Length`, `Last-Modified` e `ETag`, respectivamente.

{* ../../docs_src/custom_response/tutorial009.py hl[2,10] *}

Você também pode usar o parâmetro `response_class`:

{* ../../docs_src/custom_response/tutorial009b.py hl[2,8,10] *}

}

// corsHandler handler for CORS (Cross Origin Resource Sharing)
func corsHandler(handler http.Handler) http.Handler {
	commonS3Headers := []string{
		xhttp.Date,
		xhttp.ETag,
		xhttp.ServerInfo,
		xhttp.Connection,
		xhttp.AcceptRanges,
		xhttp.ContentRange,
		xhttp.ContentEncoding,
		xhttp.ContentLength,
		xhttp.ContentType,
		xhttp.ContentDisposition,

est(d)?"&":"?")+k.data,delete k.data),k.cache===!1&&(k.url=hc.test(d)?d.replace(hc,"$1_="+cc++):d+(dc.test(d)?"&":"?")+"_="+cc++)),k.ifModified&&(n.lastModified[d]&&v.setRequestHeader("If-Modified-Since",n.lastModified[d]),n.etag[d]&&v.setRequestHeader("If-None-Match",n.etag[d])),(k.data&&k.hasContent&&k.contentType!==!1||b.contentType)&&v.setRequestHeader("Content-Type",k.contentType),v.setRequestHeader("Accept",k.dataTypes[0]&&k.accepts[k.dataTypes[0]]?k.accepts[k.dataTypes[0]]+("*"!==k.dataTypes[0]?",...

v.data)&&(f+=(At.test(f)?"&":"?")+v.data,delete v.data),!1===v.cache&&(f=f.replace(It,"$1"),o=(At.test(f)?"&":"?")+"_="+jt.guid+++o),v.url=f+o),v.ifModified&&(ce.lastModified[f]&&T.setRequestHeader("If-Modified-Since",ce.lastModified[f]),ce.etag[f]&&T.setRequestHeader("If-None-Match",ce.etag[f])),(v.data&&v.hasContent&&!1!==v.contentType||t.contentType)&&T.setRequestHeader("Content-Type",v.contentType),T.setRequestHeader("Accept",v.dataTypes[0]&&v.accepts[v.dataTypes[0]]?v.accepts[v.dataTypes[0]]+("*"!==v.dataTypes[0]?",...

Go 1.23 changed
[`net/http.ServeContent`](/pkg/net/http#ServeContent),
[`net/http.ServeFile`](/pkg/net/http#ServeFile), and
[`net/http.ServeFS`](/pkg/net/http#ServeFS) to
remove Cache-Control, Content-Encoding, Etag, and Last-Modified headers
when serving an error. This behavior is controlled by
the [`httpservecontentkeepheaders` setting](/pkg/net/http#ServeContent).
Using `httpservecontentkeepheaders=1` restores the pre-Go 1.23 behavior.

	// create xlStorage test setup
	xlStorage, _, err := newXLStorageTestSetup(t)
	if err != nil {

	if cannotHeal && quorumETag != "" {
		// This is an object that is supposed to be removed by the dangling code
		// but we noticed that ETag is the same for all objects, let's give it a shot
		cannotHeal = false
	}

	if !latestMeta.Deleted && !latestMeta.IsRemote() {
		// check if there is a part that lost its quorum

    this was case sensitive. This change should also make it easier to configure
    certificate pinning for internationalized domain names.
 *  Fix: Don’t crash on non-ASCII `ETag` headers. Previously OkHttp would reject
    these headers when validating a cached response.
 *  Fix: Don’t allow remote peer to arbitrarily size the HPACK decoder dynamic
    table.

    setUp(protocol)
    client =
      client
        .newBuilder()
        .cache(cache)
        .build()
    server.enqueue(
      MockResponse(
        headers = headersOf("ETag", "v1"),
        body = "A",
      ),
    )
    server.enqueue(
      MockResponse(code = HttpURLConnection.HTTP_NOT_MODIFIED),
    )
    val call1 = client.newCall(Request(server.url("/")))

Additionally, since the information returned from the discovery APIs may change dynamically, a cache of the results should not be considered authoritative.
ETag support is planned in a future version to facilitate client caching.
([#47977](https://github.com/kubernetes/kubernetes/pull/47977), [#44957](https://github.com/kubernetes/kubernetes/pull/44957))