wantErr: nil,
		},
	}

	for i, tt := range tests {
		tr := &transferReader{
			Header:     tt.hdr,
			ProtoMajor: 1,
			ProtoMinor: 1,
		}
		gotErr := tr.parseTransferEncoding()
		if !reflect.DeepEqual(gotErr, tt.wantErr) {
			t.Errorf("%d.\ngot error:\n%v\nwant error:\n%v\n\n", i, gotErr, tt.wantErr)
		}
	}
}

// issue 39017 - disallow Content-Length values such as "+3"

func isUnsupportedTEError(err error) bool {
	_, ok := err.(*unsupportedTEError)
	return ok
}

// parseTransferEncoding sets t.Chunked based on the Transfer-Encoding header.
func (t *transferReader) parseTransferEncoding() error {
	raw, present := t.Header["Transfer-Encoding"]
	if !present {
		return nil
	}
	delete(t.Header, "Transfer-Encoding")