kubernetes/vendor/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconv/util.go

// splitHostPort splits a network address hostport of the form "host",
// "host%zone", "[host]", "[host%zone], "host:port", "host%zone:port",
// "[host]:port", "[host%zone]:port", or ":port" into host or host%zone and
// port.
//
// An empty host is returned if it is not provided or unparsable. A negative
// port is returned if it is not provided or unparsable.
func splitHostPort(hostport string) (host string, port int) { … }

func requiredHTTPPort(https bool, port int) int { … }

func serverClientIP(xForwardedFor string) string { … }

func netProtocol(proto string) (name string, version string) { … }

var methodLookup …