Function canonicalOriginFromHost

internal/api/httpapi/middleware.go:155–185

(host string, scheme string, fallbackPort string)

}

func canonicalOriginFromHost(host string, scheme string, fallbackPort string) (canonicalOrigin, bool) {
	trimmedHost := strings.TrimSpace(host)
	scheme = strings.ToLower(strings.TrimSpace(scheme))
	if trimmedHost == "" || scheme == "" {
		return canonicalOrigin{}, false
	}

	hostname := canonicalHost(trimmedHost)
	port := ""
	if parsedHost, parsedPort, err := net.SplitHostPort(trimmedHost); err == nil {
		hostname = canonicalHost(parsedHost)
		port = parsedPort
	}
	if hostname == "" {
		return canonicalOrigin{}, false
	}

	port = normalizePort(scheme, firstNonEmptyString(port, fallbackPort))
	if port == "" {
		return canonicalOrigin{}, false
	}

	return canonicalOrigin{
		scheme:    scheme,
		hostname:  hostname,
		port:      port,
		canonical: scheme + "://" + net.JoinHostPort(hostname, port),
		loopback:  isLoopbackHost(hostname),
		wildcard:  isWildcardHost(hostname),
	}, true
}

func normalizePort(scheme string, port string) string {
	trimmed := strings.TrimSpace(port)