netutils

func DnsLookupIpV4 ¶

func DnsLookupIpV4(ctx context.Context, fqdn string) (ipV4Addresses []string, err error)

func DnsReverseLookup ¶

func DnsReverseLookup(ctx context.Context, ipAddress string) (fqdns []string, err error)

func IsTcpPortAvailableForListening ¶ added in v0.373.0

func IsTcpPortAvailableForListening(ctx context.Context, port int) (bool, error)

func IsTcpPortOpen ¶

func IsTcpPortOpen(ctx context.Context, hostnameOrIp string, port int) (isOpen bool, err error)

Check if a TCP port on the given hostnameOrIp with given portNumber is open. The evaluation is done by opening a TCP socket and close it again.

func MustDnsLookupIpV4 ¶

func MustDnsLookupIpV4(ctx context.Context, fqdn string) (ipV4Addresses []string)

func MustDnsReverseLookup ¶

func MustDnsReverseLookup(ctx context.Context, ipAddress string) (fqdn []string)

func WaitPortAvailableForListening ¶ added in v0.373.0

func WaitPortAvailableForListening(ctx context.Context, port int) error