### Cluster-writeable probe

The reply is '200 OK' if cluster has write quorum if not it returns '503 Service Unavailable'.

```
curl http://minio1:9001/minio/health/cluster
HTTP/1.1 503 Service Unavailable
Accept-Ranges: bytes
Content-Length: 0
Server: MinIO
Vary: Origin
X-Amz-Bucket-Region: us-east-1
X-Minio-Write-Quorum: 3
X-Amz-Request-Id: 16239D6AB80EBECF
X-Xss-Protection: 1; mode=block

			"-s", iptablesconstants.IPVersionSpecific,
			"-p", "tcp",
			"-m", "tcp",
			"-j", "ACCEPT",
		)
	}

	// CLI: -t NAT -A ISTIO_OUTPUT -d 169.254.7.127 -p tcp -m tcp -j ACCEPT
	// CLI: -t NAT -A ISTIO_OUTPUT -d fd16:9254:7127:1337:ffff:ffff:ffff:ffff -p tcp -m tcp -j ACCEPT
	//
	// DESC: Anything coming BACK from the pod healthcheck port with a dest of our SNAT-ed hostside IP

* `allow_headers` - Uma lista de cabeçalhos de solicitação HTTP que devem ter suporte para requisições de origem cruzada. O padrão é `[]`. Você pode usar `['*']` para permitir todos os cabeçalhos. Os cabeçalhos `Accept`, `Accept-Language`, `Content-Language` e `Content-Type` são sempre permitidos para <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests" class="external-link" rel="noopener" target="_blank">requisições CORS simples</a>.

  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  @CanIgnoreReturnValue
  public FakeTicker advance(long time, TimeUnit timeUnit) {
    return advance(timeUnit.toNanos(time));
  }

  /** Advances the ticker value by {@code nanoseconds}. */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  @CanIgnoreReturnValue
  public FakeTicker advance(long nanoseconds) {

		case "ID":
			err = dc.ReadExactBytes((z.ID)[:])
			if err != nil {
				err = msgp.WrapError(err, "ID")
				return
			}
		case "Accepted":
			z.Accepted, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Accepted")
				return
			}
		case "RejectedReason":
			z.RejectedReason, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "RejectedReason")

  @JvmStatic
  fun createFactory(callFactory: Call.Factory): EventSource.Factory {
    return EventSource.Factory { request, listener ->
      val actualRequest =
        if (request.header("Accept") == null) {
          request.newBuilder().addHeader("Accept", "text/event-stream").build()
        } else {
          request
        }

      RealEventSource(actualRequest, listener).apply {
        connect(callFactory)
      }
    }

    }

    // If we add an "Accept-Encoding: gzip" header field we're responsible for also decompressing
    // the transfer stream.
    var transparentGzip = false
    if (userRequest.header("Accept-Encoding") == null && userRequest.header("Range") == null) {
      transparentGzip = true
      requestBuilder.header("Accept-Encoding", "gzip")
    }

import okhttp3.FallbackTestClientSocketFactory.Companion.TLS_FALLBACK_SCSV

/**
 * An SSLSocketFactory that delegates calls. Sockets created by the delegate are wrapped with ones
 * that will not accept the [TLS_FALLBACK_SCSV] cipher, thus bypassing server-side fallback
 * checks on platforms that support it. Unfortunately this wrapping will disable any
 * reflection-based calls to SSLSocket from Platform.
 */

    "X-Amz-Decoded-Content-Length": "228"
  },
  "responseHeader": {
    "Accept-Ranges": "bytes",
    "Content-Length": "0",
    "ETag": "9fe7a344ef4227d3e53751e9d88ce41e",
    "Server": "MinIO",
    "Strict-Transport-Security": "max-age=31536000; includeSubDomains",
    "Vary": "Origin,Accept-Encoding",
    "X-Amz-Id-2": "dd9025bab4ad464b049177c95eb6ebf374d3b3fd1af9251148b658df7ac2e3e8",

	// Add the bucket condition, only accept buckets equal to the one passed.
	bucketConditionStr := fmt.Sprintf(`["eq", "$bucket", "%s"]`, bucketName)
	// Add the key condition, only accept keys equal to the one passed.
	keyConditionStr := fmt.Sprintf(`["eq", "$key", "%s/upload.txt"]`, objectKey)
	// Add content length condition, only accept content sizes of a given length.