dnsutils

Documentation

Index

• func GetMinimalTTL(m *dnsmsg.Msg) (_ uint32, ok bool)
• func ReadMsgFromTCP(c io.Reader) (*dnsmsg.Msg, int, error)
• func ReadMsgFromUDP(c io.Reader, bufSize int) (*dnsmsg.Msg, int, error)
• func SubtractTTL(m *dnsmsg.Msg, delta uint32)

Functions

func GetMinimalTTL

func GetMinimalTTL(m *dnsmsg.Msg) (_ uint32, ok bool)

GetMinimalTTL returns the minimal ttl of this msg.

func ReadMsgFromTCP

func ReadMsgFromTCP(c io.Reader) (*dnsmsg.Msg, int, error)

Note: ReadMsgFromTCP read c twice (header length and then body). Buffered reader is recommended.

func ReadMsgFromUDP

func ReadMsgFromUDP(c io.Reader, bufSize int) (*dnsmsg.Msg, int, error)

func SubtractTTL

func SubtractTTL(m *dnsmsg.Msg, delta uint32)

SubtractTTL subtract delta from every m's RR. If RR's TTL is smaller than delta, the ttl will be set to 1.