netutils

func DnsLookupIpV4 ¶ added in v0.260.0

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

func DnsReverseLookup ¶ added in v0.261.0

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

func IsTcpPortOpen ¶

func IsTcpPortOpen(hostnameOrIp string, port int, verbose bool) (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 ¶ added in v0.260.0

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

func MustDnsReverseLookup ¶ added in v0.261.0

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

func MustIsTcpPortOpen ¶

func MustIsTcpPortOpen(hostnameOrIp string, port int, verbose bool) (isOpen bool)