switch err {
	case errDiskStale:
		w.WriteHeader(http.StatusPreconditionFailed)
	case errFileNotFound, errFileVersionNotFound:
		w.WriteHeader(http.StatusNotFound)
	case errInvalidAccessKeyID, errAccessKeyDisabled, errNoAuthToken, errMalformedAuth, errAuthentication, errSkewedAuthTime:
		w.WriteHeader(http.StatusUnauthorized)
	case context.Canceled, context.DeadlineExceeded:
		w.WriteHeader(499)
	default:

			if time.Since(connectTime) < (globalNetPerfMinDuration - time.Second) {
				adminLogIf(ctx, err)
			}
		}
		if err != nil {
			if errors.Is(err, io.EOF) {
				w.WriteHeader(http.StatusNoContent)
			} else {
				w.WriteHeader(http.StatusBadRequest)
			}
			break
		}
	}
}

// SiteReplicationNetPerf - everything goes to io.Discard
// [POST] /minio/admin/v3/site-replication/netperf

			case <-ticker.C:
				if !started {
					// Start writing response to client
					started = true
					setCommonHeaders(w)
					setEventStreamHeaders(w)
					// Set 200 OK status
					w.WriteHeader(200)
				}
				// Send whitespace and keep connection open
				if _, err := w.Write([]byte(" ")); err != nil {
					return
				}
				xhttp.Flush(w)
			case hr := <-respCh:
				switch hr.apiErr {

		bugLogIf(context.Background(), fmt.Errorf("invalid WriteHeader code %v", statusCode))
		statusCode = http.StatusInternalServerError
	}
	setCommonHeaders(w)
	if mType != mimeNone {
		w.Header().Set(xhttp.ContentType, string(mType))
	}
	w.Header().Set(xhttp.ContentLength, strconv.Itoa(len(response)))
	w.WriteHeader(statusCode)
	if response != nil {
		w.Write(response)
	}
}

pkg net/http/httptrace, type ClientTrace struct, PutIdleConn func(error)
pkg net/http/httptrace, type ClientTrace struct, Wait100Continue func()
pkg net/http/httptrace, type ClientTrace struct, WroteHeaders func()
pkg net/http/httptrace, type ClientTrace struct, WroteRequest func(WroteRequestInfo)
pkg net/http/httptrace, type DNSDoneInfo struct
pkg net/http/httptrace, type DNSDoneInfo struct, Addrs []net.IPAddr

	for _, path := range []string{
		"../foo",
		"/foo",
		"a/b/../../../c",
	} {
		var buf bytes.Buffer
		tw := NewWriter(&buf)
		tw.WriteHeader(&Header{
			Name: path,
		})
		const securePath = "secure"
		tw.WriteHeader(&Header{
			Name: securePath,
		})
		tw.Close()

		tr := NewReader(&buf)
		h, err := tr.Next()
		if err != ErrInsecurePath {

	}

	// s3zip does not allow ranges.
	w.Header().Del(xhttp.AcceptRanges)

	// Set any additional requested response headers.
	setHeadGetRespHeaders(w, r.Form)

	// Successful response.
	w.WriteHeader(http.StatusOK)
}

// Update the passed zip object metadata with the zip contents info, file name, modtime, size, etc.
// The returned zip index will de decrypted.

	}

	// Set any additional requested response headers.
	setHeadGetRespHeaders(w, r.Form)

	// Successful response.
	if rs != nil || opts.PartNumber > 0 {
		w.WriteHeader(http.StatusPartialContent)
	} else {
		w.WriteHeader(http.StatusOK)
	}

	// Notify object accessed via a HEAD request.
	sendEvent(eventArgs{
		EventName:    event.ObjectAccessedHead,
		BucketName:   bucket,

		case <-ctx.Done():
			return grid.NewRemoteErr(ctx.Err())
		}
	}
}

func (s *peerRESTServer) writeErrorResponse(w http.ResponseWriter, err error) {
	w.WriteHeader(http.StatusForbidden)
	w.Write([]byte(err.Error()))
}

// IsValid - To authenticate and verify the time difference.
func (s *peerRESTServer) IsValid(w http.ResponseWriter, r *http.Request) bool {

pkg net/http, type Response struct, TransferEncoding []string
pkg net/http, type ResponseWriter interface { Header, Write, WriteHeader }
pkg net/http, type ResponseWriter interface, Header() Header
pkg net/http, type ResponseWriter interface, Write([]uint8) (int, error)
pkg net/http, type ResponseWriter interface, WriteHeader(int)
pkg net/http, type RoundTripper interface { RoundTrip }