* **`4XX`** – статус-коды, сообщающие о клиентской ошибке. Это ещё одна наиболее часто используемая категория.
    * Пример – код `404` для статуса "Not Found".
    * Для общих ошибок со стороны клиента можно просто использовать код `400`.

	if o.ActualSize != nil {
		return *o.ActualSize, nil
	}
	if o.IsCompressed() {
		sizeStr := o.UserDefined[ReservedMetadataPrefix+"actual-size"]
		if sizeStr != "" {
			size, err := strconv.ParseInt(sizeStr, 10, 64)
			if err != nil {
				return -1, errInvalidDecompressedSize
			}
			return size, nil
		}
		var actualSize int64
		for _, part := range o.Parts {
			actualSize += part.ActualSize
		}

			// whether you also have the s3:ListBucket
			// permission.
			// * If you have the s3:ListBucket permission
			//   on the bucket, Amazon S3 will return an
			//   HTTP status code 404 ("no such key")
			//   error.
			// * if you don’t have the s3:ListBucket
			//   permission, Amazon S3 will return an HTTP
			//   status code 403 ("access denied") error.`

        responseData1.setHttpStatusCode(200);
        assertTrue(rule.match(responseData1));

        ResponseData responseData2 = new ResponseData();
        responseData2.setHttpStatusCode(404);
        assertFalse(rule.match(responseData2));

        ResponseData responseData3 = new ResponseData();
        responseData3.setHttpStatusCode(500);
        assertFalse(rule.match(responseData3));
    }

        .Builder()
        .status("HTTP/1.1 404 Not Found")
        .build(),
    )
    newWebSocket()
    clientListener.assertFailure(
      404,
      null,
      ProtocolException::class.java,
      "Expected HTTP 101 response but was '404 Not Found'",
    )
  }

  @Test
  fun clientTimeoutClosesBody() {
    webServer.enqueue(
      MockResponse
        .Builder()
        .code(408)

	}
	volume := r.Form.Get(storageRESTVolume)
	filePath := r.Form.Get(storageRESTFilePath)
	offset, err := strconv.ParseInt(r.Form.Get(storageRESTOffset), 10, 64)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	length, err := strconv.ParseInt(r.Form.Get(storageRESTLength), 10, 64)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}

```

### Real-time 'status' for a batch job
```
mc batch status myminio/ E24HH4nNMcgY5taynaPfxu
●∙∙
Objects:        28766
Versions:       28766
Throughput:     3.0 MiB/s
Transferred:    406 MiB
Elapsed:        2m14.227222868s
CurrObjName:    share/doc/xml-core/examples/foo.xmlcatalogs
```

### 'describe' the batch job yaml.
```
mc batch describe myminio/ E24HH4nNMcgY5taynaPfxu
replicate:

	VLEB	$15, 4095(R9), V15      // e7f09ffff000
	VSTEG	$1, V30, (R1)(R2*1)     // e7e21000180a
	VSTEF	$3, V2, (R9)            // e7209000300b
	VSTEH	$7, V31, (R2)           // e7f020007809
	VSTEB	$15, V29, 4094(R12)     // e7d0cffef808
	VMSLG	V21, V22, V23, V24      // e78563007fb8
	VMSLEG  V21, V22, V23, V24      // e78563807fb8
	VMSLOG  V21, V22, V23, V24      // e78563407fb8
	VMSLEOG V21, V22, V23, V24      // e78563c07fb8

        StatusCodeWebApiManager manager = new StatusCodeWebApiManager(404);

        TestHttpServletRequest request = new TestHttpServletRequest();
        TestHttpServletResponse response = new TestHttpServletResponse();
        TestFilterChain chain = new TestFilterChain();

        manager.process(request, response, chain);
        assertEquals(404, response.getStatus());

        // Test with different status code

	buf, err := os.ReadFile(cgroupV2MemLimitFile)
	if err != nil {
		buf, err = os.ReadFile(cgroupV1MemLimitFile)
	}
	if err != nil {
		return 0
	}
	limit, err = strconv.ParseUint(strings.TrimSpace(string(buf)), 10, 64)
	if err != nil {
		// The kernel can return valid but non integer values
		// but still, no need to interpret more
		return 0
	}
	if limit >= 100*humanize.TiByte {
		// No limit set, or unreasonably high. Ignore