dns

Documentation

Overview

Package dns provides reverse lookup functionality for goQuery's results

Index

• func CheckDNS() error
• func TimedReverseLookup(ctx context.Context, ips []string, timeout time.Duration) (ipToDomain map[string]string)
• type LookupResult

Functions

func CheckDNS

func CheckDNS() error

CheckDNS is a no-op to check if a DNS resolver is present (deployment enviornment specific)

func TimedReverseLookup

func TimedReverseLookup(ctx context.Context, ips []string, timeout time.Duration) (ipToDomain map[string]string)

TimedReverseLookup performs a reverse lookup on the given ips. The lookup takes at most timeout time, afterwards it is aborted. Returns a mapping IP => domain. If the lookup is aborted because of a timeout, the current mapping is returned with the pending lookups missing. If there is no RDNS entry for an IP, the corresponding key in the result will not be associated with any value (i.e. domain).

Types

type LookupResult

type LookupResult struct {
	Success bool
	IP      string
	Domain  string
}

LookupResult stores the result of a reverse DNS lookup