dns

package

v1.0.0 Latest Latest Go to latest Published: Sep 23, 2026 License: Apache-2.0 Imports: 9 Imported by: 1

Details

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func ClearCache()

ClearCache removes all entries from the DNS cache.

func ClearHost(host string)

ClearHost removes all cached entries for the given hostname (both ipv4 and ipv6 keys).

func DefaultConfig() (*dns.ClientConfig, error)

DefaultConfig get the local dns server with better Linux distribution compatibility

func DialContext() func(ctx context.Context, network, addr string) (net.Conn, error)

DialContext return a DialContext function for http.Transport, using the local resolver

func DialContextAt(servers []string, host string) func(ctx context.Context, network, addr string) (net.Conn, error)

DialContextAt return a DialContext function for http.Transport, using the given resolvers

func LookupIP(host string, ipv6 ...bool) ([]string, error)

LookupIP looks up host using the local resolver. It returns a slice of that host's IPv4 and IPv6 addresses.

func LookupIPAt(servers []string, host string, ipv6 ...bool) ([]string, error)

LookupIPAt looks up host using the given resolvers. It returns a slice of that host's IPv4 and IPv6 addresses.

func SetCacheForTest(key string, ips []string, expireAt time.Time)

SetCacheForTest injects entries into the DNS cache with a custom expiration (test-only).

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