func ValidHostLabel()

in transport/http/host.go [73:89]

• 16 lines of code
• 11 McCabe index (conditional complexity)

func ValidHostLabel(label string) bool {
	if l := len(label); l == 0 || l > 63 {
		return false
	}
	for _, r := range label {
		switch {
		case r >= '0' && r <= '9':
		case r >= 'A' && r <= 'Z':
		case r >= 'a' && r <= 'z':
		case r == '-':
		default:
			return false
		}
	}

	return true
}