if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
			delete(metadata, k)
		}
	}

	if contentEncoding, ok := metadata[strings.ToLower(xhttp.ContentEncoding)]; ok {
		contentEncoding = trimAwsChunkedContentEncoding(contentEncoding)
		if contentEncoding != "" {
			// Make sure to trim and save the content-encoding
			// parameter for a streaming signature which is set

      logger.log(headers.name(i) + ": " + value)
    }

    private fun bodyHasUnknownEncoding(headers: Headers): Boolean {
      val contentEncoding = headers["Content-Encoding"] ?: return false
      return !contentEncoding.equals("identity", ignoreCase = true) &&
        !contentEncoding.equals("gzip", ignoreCase = true)
    }

    private fun bodyIsStreaming(response: Response): Boolean {

		TransitionedObject:         o.TransitionedObject,
		RestoreExpires:             o.RestoreExpires,
		RestoreOngoing:             o.RestoreOngoing,
		ContentType:                o.ContentType,
		ContentEncoding:            o.ContentEncoding,
		Expires:                    o.Expires,
		StorageClass:               o.StorageClass,
		ReplicationStatus:          o.ReplicationStatus,
		UserTags:                   o.UserTags,

        val identityBody =
          body
            ?: throw IllegalStateException("cannot gzip a request that has no body")

        val contentEncoding = headers["Content-Encoding"]
        check(contentEncoding == null) {
          "Content-Encoding already set: $contentEncoding"
        }

        headers.add("Content-Encoding", "gzip")
        body = GzipRequestBody(identityBody)
      }

		},
		{
			name:    "unknown key Content-Encoding is error as it does not appear in policy",
			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.ContentEncoding), "encoding-val"),
			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "Content-Encoding" not specified in the policy.`,
		},
		{
			name:    "many bucket values",

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,
		xhttp.LastModified,
		xhttp.ContentLanguage,
		xhttp.CacheControl,
		xhttp.RetryAfter,
		xhttp.AmzBucketRegion,

		IsLatest:         fi.IsLatest,
		DeleteMarker:     fi.Deleted,
		Size:             fi.Size,
		ModTime:          fi.ModTime,
		Legacy:           fi.XLV1,
		ContentType:      fi.Metadata["content-type"],
		ContentEncoding:  fi.Metadata["content-encoding"],
		NumVersions:      fi.NumVersions,
		SuccessorModTime: fi.SuccessorModTime,
		CacheControl:     fi.Metadata["cache-control"],
	}

	if exp, ok := fi.Metadata["expires"]; ok {