taprw

Documentation

Overview

Package taprw takes a query and intercepts the response. It will log both after the response is written.

Index

• type ResponseWriter
  • func (w *ResponseWriter) DnstapError() error
  • func (w *ResponseWriter) WriteMsg(resp *dns.Msg) (writeErr error)
• type SendOption
• type Tapper

Types

type ResponseWriter

type ResponseWriter struct {
	QueryEpoch time.Time
	Query      *dns.Msg
	dns.ResponseWriter
	Tapper
	Send *SendOption
	// contains filtered or unexported fields
}

ResponseWriter captures the client response and logs the query to dnstap. Single request use. SendOption configures Dnstap to selectively send Dnstap messages. Default is send all.

func (*ResponseWriter) DnstapError

func (w *ResponseWriter) DnstapError() error

DnstapError check if a dnstap error occurred during Write and returns it.

func (*ResponseWriter) WriteMsg

func (w *ResponseWriter) WriteMsg(resp *dns.Msg) (writeErr error)

WriteMsg writes back the response to the client and THEN works on logging the request and response to dnstap.

type SendOption

type SendOption struct {
	Cq bool
	Cr bool
}

SendOption stores the flag to indicate whether a certain DNSTap message to be sent out or not.

type Tapper

type Tapper interface {
	TapMessage(*tap.Message)
	Pack() bool
}

Tapper is what ResponseWriter needs to log to dnstap.