for _, t := range reqInfo.tags {
			tags[t.Key] = t.Val
		}
		entry.Tags = tags
		// ignore cases for ttfb when its zero.
		if timeToFirstByte != 0 {
			entry.API.TimeToFirstByte = strconv.FormatInt(timeToFirstByte.Nanoseconds(), 10) + "ns"
			entry.API.TimeToFirstByteInNS = strconv.FormatInt(timeToFirstByte.Nanoseconds(), 10)
		}
	} else {
		auditEntry := GetAuditEntry(ctx)
		if auditEntry != nil {
			entry = *auditEntry
		}

				},
				CallStats: madmin.TraceCallStats{
					Latency:         reqEndTime.Sub(respRecorder.StartTime),
					InputBytes:      inputBytes,
					OutputBytes:     respRecorder.Size(),
					TimeToFirstByte: respRecorder.TimeToFirstByte,
				},
			},
		}

		globalTrace.Publish(t)
	})
}

func httpTrace(f http.HandlerFunc, logBody bool) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {

		// that way following Golang HTTP response behavior.
		lrw.WriteHeader(http.StatusOK)
	}
	n, err := lrw.ResponseWriter.Write(p)
	lrw.bytesWritten += n
	if lrw.TimeToFirstByte == 0 {
		lrw.TimeToFirstByte = time.Now().UTC().Sub(lrw.StartTime)
	}
	gzipped := lrw.Header().Get("Content-Encoding") == "gzip"
	if !gzipped && ((lrw.LogErrBody && lrw.StatusCode >= http.StatusBadRequest) || lrw.LogAllBody) {

				Headers:    nil,
				StatusCode: status,
				Body:       []byte(bytesOrLength(resp)),
			},
			CallStats: madmin.TraceCallStats{
				InputBytes:      len(req),
				OutputBytes:     len(resp),
				TimeToFirstByte: end.Sub(start),
			},
		},
	}
	// If the context contains a TraceParamsKey, add it to the trace path.
	v := ctx.Value(TraceParamsKey{})
	// Should match SingleHandler.Call checks.

minio server /mnt/data
```

Setting this environment variable automatically enables audit logging to the HTTP target. The audit logging is in JSON format as described below.

NOTE:

- `timeToFirstByte` and `timeToResponse` will be expressed in Nanoseconds.
- Additionally in the case of the erasure coded setup `tags.objectErasureMap` provides per object details about
  - Pool number the object operation was performed on.

	}

	if w != nil {
		// Increment the prometheus http request response histogram with API, Bucket
		bucketHTTPRequestsDuration.With(prometheus.Labels{
			"api":    api,
			"bucket": bucket,
		}).Observe(w.TimeToFirstByte.Seconds())
	}

	bh.Lock()
	defer bh.Unlock()

	hstats, ok := bh.httpStats[bucket]
	if !ok {
		hstats = bucketHTTPAPIStats{
			currentS3Requests: &HTTPAPIStats{},

    enableTlsWithTunnel()
    server.protocols = Arrays.asList(Protocol.HTTP_1_1)
    timeToFirstByte()
  }

  @Test
  fun timeToFirstByteHttp2OverHttps() {
    platform.assumeHttp2Support()
    enableTlsWithTunnel()
    server.protocols = Arrays.asList(Protocol.HTTP_2, Protocol.HTTP_1_1)
    timeToFirstByte()
  }

  /**