Function mustHaveFieldNameColon

textproto_reader.go:321–326

mustHaveFieldNameColon ensures that, per RFC 7230, the field-name is on a single line, so the first line must contain a colon.

(line []byte)

// field-name is on a single line, so the first line must
// contain a colon.
func mustHaveFieldNameColon(line []byte) error {
	if bytes.IndexByte(line, ':') < 0 {
		return protocolError(fmt.Sprintf("malformed MIME header: missing colon: %q", line))
	}
	return nil
}

var nl = []byte("\n")