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package forward
import (
"context"
"time"
"github.com/coredns/coredns/plugin/dnstap"
"github.com/coredns/coredns/plugin/dnstap/msg"
"github.com/coredns/coredns/request"
tap "github.com/dnstap/golang-dnstap"
"github.com/miekg/dns"
)
func toDnstap(ctx context.Context, host string, f *Forward, state request.Request, reply *dns.Msg, start time.Time) error {
tapper := dnstap.TapperFromContext(ctx)
if tapper == nil {
return nil
}
// Query
b := msg.New().Time(start).HostPort(host)
opts := f.opts
t := ""
switch {
case opts.forceTCP: // TCP flag has precedence over UDP flag
t = "tcp"
case opts.preferUDP:
t = "udp"
default:
t = state.Proto()
}
if t == "tcp" {
b.SocketProto = tap.SocketProtocol_TCP
} else {
b.SocketProto = tap.SocketProtocol_UDP
}
if tapper.Pack() {
b.Msg(state.Req)
}
m, err := b.ToOutsideQuery(tap.Message_FORWARDER_QUERY)
if err != nil {
return err
}
tapper.TapMessage(m)
// Response
if reply != nil {
if tapper.Pack() {
b.Msg(reply)
}
m, err := b.Time(time.Now()).ToOutsideResponse(tap.Message_FORWARDER_RESPONSE)
if err != nil {
return err
}
tapper.TapMessage(m)
}
return nil
}
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